Y S I incorporated 6200 Data Acquisition System User’s Manual
Table of Contents Page Section 1 Introduction 1.1 Description 1.2 General Specifications 1.3 How to Use this Manual Section 2 Getting Started 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.
Section 7 Collecting Data with EcoWatch DCP 7.1 7.2 7.3 7.4 7.5 7.6 Section 8 7-1 7-1 7-3 7-3 7-11 7-14 Reporting and Plotting Data with EcoWatch DCP 8.1 8.2 8.3 8.4 8.5 8.6 8.
Assistance Help with this product can be obtained by contacting a YSI Factory Service Center. United States YSI Massachusetts Repair Center 13 Atlantis Drive Marion, MA 02738 Phone: 508 748-0366 Fax: 508 748-2543 Compliance The 6200 Data Acquisition System meets the EN61326 Electronic Equipment for Measurement and Control specification when connected 6-series sonde cabling is protected from RF induction and industrial noise. The 6-series sondes may malfunction over the frequency range of 4.2 MHz to 8.
Safety Notes The following type of safety notes are used throughout this manual. Familiarize yourself with each of the notes and their meaning before using this product. NOTE The NOTE is used to indicate a statement of company recommendation or policy. A NOTE is not associated directly with a hazard or hazardous situation, and it is not used in place of CAUTION or WARNING. CAUTION! Used to indicate a hazard.
YSI 6200 DAS USER Manual Section 1 Introduction 1.1 Description The 6200 Data Acquisition System (6200 DAS) with EcoWatch DCPä is an integrated hardware and software package specifically designed to be a powerful, yet easy to configure, multiparameter water quality and meteorological data collection platform with a graphical user interface. Information can be collected real-time or periodically from solid state memory.
YSI 6200 DAS USER Manual The water quality sensors include water temperature, conductivity, dissolved oxygen, pH, ORP, depth/level, turbidity, nitrate, ammonia and chloride. The system includes a field station (6200 DCP), which houses a powerful data logger and connects to any of the water quality or meteorological sensors you choose. The data logger uses a 32-bit microprocessor with up to 1 megabyte of data storage memory.
YSI 6200 DAS User-Interface Software Computer Hardware USER Manual YSI EcoWatch DCPä featuring autoconfigurable sensors, real-time data displays, powerful reporting and plotting options Compatibility: Windowsâ 3.1, 95, 98 and NT.
YSI 6200 DAS USER Manual 1.3 How to Use this Manual The 6200 DAS is a complex product that requires your understanding before you can successfully use it; therefore, we strongly suggest that you perform the following steps to get your system set up quickly and correctly in the field.
YSI 6200 DAS USER Manual Section 2 Getting Started 2.1 Unpacking and Inspection Inspect the outside of the shipping carton(s) for damage. If damage is detected, contact the carrier immediately. Remove the instrument from the shipping container. Be careful not to discard any parts or supplies. Confirm that all items on the packing list are present. Inspect all assemblies and components for damage. The basic 6200 DAS is shipped with the following major components.
YSI 6200 DAS USER Manual installation of the system. The next few pages of the manual describe the checkout installation. You need not use the final mounting hardware to perform this test, however, this is a good time to review your installation plan for your field site. 2.2 Installing EcoWatch DCP Choose a computer with these minimum requirements: 386 processor with 4 MB of RAM, at least one COM port and Windowsâ 3.1. A 3.
YSI 6200 DAS USER Manual 2.3 Setting Up System Components for Checkout In this section you will find instructions for checkout installation of your entire system in the laboratory or other temporary location of your choice. Field station and base station components will be in the same room for this initial setup and checkout procedure. Your setup may differ from the one described below since the 6200 DAS was ordered to your specification.
YSI 6200 DAS USER Manual Assuming that all shipping cartons have been opened and the equipment has been initially checked for damage, proceed by doing the following. 1. Place the 6200 Data Collection Platform enclosure on a work surface, leaving space for accessories to be laid out and connected. Position the enclosure so that the bottom (connector ports) faces toward you. Next open the hinged cover, by releasing the two latches on the right side.
YSI 6200 DAS USER Manual 3. Unpack the battery and insert it into the battery slot (see Section 4.3 for details). The battery connectors are different sizes. Connect the leads, red to positive and blue to negative. After the battery is connected, the 6200 DCP should beep for a few seconds as it boots up. The battery was charged at the factory and should function without problem for this test. Later we will check the battery voltage with EcoWatch DCP software. 4.
YSI 6200 DAS USER Manual however, use the direct link to functionally check your sensors, power source, and DCP in this laboratory setup. Your setup as described above should now appear similar to the diagram below. Note that the Radio Base Station is not connected to the system at this point, as it will be checked later.
YSI 6200 DAS USER Manual When you remove the sonde from the shipping container, you will see that a probe guard protects the sensors. Unscrew the guard to determine the sensors installed. After checking and/or installing sensors, place the probe guard back in place to protect the sensors. Sensors shown in this example are temperature, conductivity, dissolved oxygen and pH. It is important to know what sensors are installed for the purpose of correctly assigning sensors during setup. Figure 2.
YSI 6200 DAS USER Manual You should now open the EcoWatch DCP program. If you have not installed it yet refer to Section 2.2, Installing EcoWatch DCP. Click on the Comm top line menu, then Settings… Verify that the settings match the table. Baud Data Parity Protocol Handshaking 9600 8 bits None Kermit XonXoff Once complete with this window click on OK. Now return to top line menu and click on Comm, then choose Sonde from the submenu. Select your COM port and press OK.
YSI 6200 DAS USER Manual The sonde software is menu-driven. Select a function by typing its corresponding number or character. It is not necessary to press Enter after a number/character selection. Use the 0 or Esc key to return to a previous menu. The mouse does not interact with the sonde menus. NOTE If a single keystroke yields no response on the screen, press the key again. You should now see a reaction. This occurs when a key is not pressed for a period of time sending the sonde into a “sleep mode”.
YSI 6200 DAS USER Manual -----------------Main----------------1-Run 4-Report 2-Calibrate 5-Sensor ------------Sensors 3-System 6-Advanced 1-(*)Temperature 2-(*)Conductivity 3-(*)Dissolved Oxy Select Option (0 for previous menu): 4-( )Pressure-Abs enabled------------5-(*)ISE1 pH 6-( )ISE2 NONE 7-( )ISE3 NONE Select Option (0 for previous menu): 3. From Main menu press 4-Report, to enter the menu that allows you to assign the parameters and the units of your choice.
YSI 6200 DAS USER Manual 2.5 Configuring the 6200 DCP using EcoWatch DCP All sensors connect to the 6200 DCP (Data Collection Platform). The DCP electronics physically reside inside the NEMA 4X enclosure. You should now have all of your sensors connected and a “direct link” RS-232 cable running from the 6200 DCP a COM port on your PC (COM1 in our example).
YSI 6200 DAS USER Manual Once you click on OK several status screens will appear indicating that EcoWatch DCP is attempting to detect the 6200 DCP and its sensors. The screens are part of an autoconfiguration routine that searches for SDI-12 sensors (sondes) and MET sensors (meteorological sensors). The screens are titled “6200 DCP ConfigWizard”. An example below shows that a sonde with SDI-12 Address 0 has been detected after scanning addresses 0 to 8.
YSI 6200 DAS USER Manual After completing the scan of SDI-12 sensors, the software switches to a ConfigWizard screen that shows the status of the scan of meteorological sensors. If a MET sensor requires entry of a calibration constant, a screen appears. Only the solar radiation sensor and barometer sensor require a calibration constant, which is provided in the sensor literature or included in the back of the manual. Each time you make a New 6200 file you will need to enter these calibration constants.
YSI 6200 DAS USER Manual The next choice relates to the communication option that you will be using for this particular file. For example, if you ordered a system with a 2-way radio, click on the appropriate circle. Remember that even though you may be “directly” communicating with the 6200 DCP field station during configuration, you must choose the mode of communication you will use for field installation.
YSI 6200 DAS USER Manual The last step EcoWatch DCP will do is to reboot the 6200 DCP, and you should hear a long beep. After you click on Finish, a report form similar to the one shown below appears on the screen. YSI/Massachusetts 508.748.0366, Fax 508.748.
YSI 6200 DAS USER Manual 2.6 Testing the 6200 DCP At this point you have connected the 6200 DCP components, installed EcoWatch DCP and run the ConfigWizard. You are ready to begin collecting data and display it on EcoWatch DCP. In order to perform a test that provides data in a timely manner for testing, click on 6200, then 6200 DCP Setup. The following screen should appear. Click on System… to open the window related to system settings.
YSI 6200 DAS USER Manual EcoWatch DCP interrogation timing. Even when EcoWatch DCP is not running, the DCP continues to log data to its memory once it has been configured. The next selection gives you the choice of interrogating the DCP at the same rate as the sample interval or, alternatively, choosing some number of minutes independent of the DCP sample interval. For the 6200 Test, set the interrogation schedule to “Same as Sample Interval” by clicking on the box just to the left of this choice.
YSI 6200 DAS USER Manual Click on OK to exit the menu and return to the main EcoWatch DCP menu screen. A window appears momentarily, displaying the message Programming 6200...Please Wait. When EcoWatch DCP is done downloading the new configuration it will reboot the 6200 DCP. You should hear a long beep from the 6200 DCP as it starts up again. Once the main menu appears, click on 6200 to pull down the menu and click on Interrogate Now. Any data that has been collected by the DCP will appear.
YSI 6200 DAS USER Manual If you have difficulty viewing the readings on a sheet, you have two options. One...click and hold on a vertical line that separates description headers. While holding the mouse button down you can resize the column width. Two...Click on 6200, Data Table Setup, Font/Color... The default font/size is Arial/11. Change this to suit your needs. For example, changing the size from 11 to 9 will fit more information on one screen without the need to scroll. 2.
YSI 6200 DAS USER Manual succession. During the next sampling period, a rain fall between 0.05 and 0.10 inch should appear after interrogation. A rain rate, calculated based on accumulation per unit time also appears. For example, an accumulation of 0.06 inches in 15 minutes translates to a rate of 0.24 in/hour (4 15-minute intervals per hour, or 4 x 0.06). For solar radiation remove the cap/dust cover and expose the sensor to natural light during the test period.
YSI 6200 DAS USER Manual 2.8 Displaying Data in EcoWatch DCP After you have uploaded several sets of readings into EcoWatch DCP, close the 6200 file by choosing 6200, then Close. Data files in EcoWatch DCP have a “.DAT” extension, unlike the 6200 DCP files which have “.S62” extension. There is one data file generated for each set of sensors (SDI-12 Sonde, MET and Internal). Each data file contains encrypted information related to time and identity of the file.
YSI 6200 DAS USER Manual This completes the Getting Started section of the manual. You should now take time to become thoroughly informed about the 6200 DAS by reading all sections of the manual that pertain to the specific system you have received. Not all sections apply since there are a number of communication, power and sensor options. IMPORTANT! Before continuing, remember that the DCP continues to collect data from the sensors at whatever interval you set (e.g., every 2 minutes).
YSI 6200 DAS USER Manual Section 3 Setting Up a 6-Series Sonde 3.1 Introduction This section is designed to familiarize you with the settings a 6-Series Sonde must have to work with the 6200 DAS. It will also describe how to access the sonde menus through EcoWatch DCP. You should refer to the sonde user manual provided with each sonde to learn more about setup and calibration of your particular sonde model. By the end of Section 3 you will have...
YSI 6200 DAS USER Manual 6-Series Sonde to Lab Computer DB-9 Power Supply 6037: 220 VAC 6038: 110 VAC 6095B Adapter MS-8 You will need... Cable ❑ ❑ ❑ ❑ ❑ 60 0 6-Series Sonde 6-Series Sonde Computer with Com Port Power Supply 6095B MS-8/DB-9 Adapter DB-9 to DB-25 Adapter may be needed at Com Port 6-Series Sonde to 610 Display/Logger 6098 MS-8 Adapter YSI MS-8 You will need...
YSI 6200 DAS USER Manual 3.3 Connecting a Sonde to a Computer with EcoWatch DCP In order to assign sonde sensors, report parameters, sonde address and various “advanced” parameters, you will need to connect the sonde to your PC (or 610) and communicate through EcoWatch DCP. The diagram below helps describe this connection. DB-9 Power Supply 6037: 220 VAC 6038: 110 VAC 6095B Adapter Computer with EcoWatch DCP MS-8 Cable 600 6-Series Sonde In addition to the sonde, you need a cable.
YSI 6200 DAS USER Manual If you are unable to establish interaction with the sonde, make sure that the cable is properly connected, power is applied (e.g., 6038 Power Supply or other 12 VDC source), and that the COM port is set correctly. If you were unsure of your COM port number, reassign another port number and repeat the steps above. 3.4 Preparing the Sonde to Communicate with the 6200 DCP The sonde software is menu-driven. Select a function by typing its corresponding number or character.
YSI 6200 DAS USER Manual To communicate with the 6200 DCP the sonde needs to have these three items setup properly: 1. Communication at 9600 baud with Auto baud 2. A unique SDI-12 address 3. The SDI-12 autosleep function on From Main menu press 3-System, then 1-Comm setup. 1-Comm setup allows you to confirm the baud rate at 9600, which is the default value. You should also confirm that the Auto baud has a (*). This assures that the sonde will work properly with a 610.
YSI 6200 DAS USER Manual From Main menu press 6-Advanced, then 2-Setup. Verify that the screens below matches what you see. It is very important that the Auto sleep options are activated, especially when the sonde is being set up for deployment. For more details see your sonde manual.
YSI 6200 DAS USER Manual Section 4 Powering the Field Station 4.1 Introduction There are three options for powering the field station. All involve using a rechargeable lead acid battery (12 volt, 12 Amp Hour) that is mounted inside the 6200 DCP (field station). One option is to use the battery as the sole source of power. A fully charged battery lasts from a few days to a few weeks, depending on the number and type of sensors and the mode and frequency of communication.
YSI 6200 DAS USER Manual Connections and Routing... All of the standard sensors (water quality and meteorological) have pre-wired waterproof connectors on the bottom of the 6200 DCP. See Figure 4.1 to locate specific connector sites. In addition, there are two holes (0.875 in or 22 mm) in the bottom of the enclosure for use with conduit fittings or feed-through glands. These holes are plugged with NEMA 4X rated seals.
YSI 6200 DAS USER Manual Lightning and Surge Protection... The standard 6200 DCP has full isolation and lightning protection on all external connections and standard internals such as telephone connection, DB-9 serial communications port and the solar charger. You may purchase a factory-installed option that provides full isolation and lightning protection on the expansion terminal block, which is not provided on the standard unit. See Appendix D, Accessories.
YSI 6200 DAS USER Manual 4.3 Installing the Battery This section describes the procedure for powering a 6200 DCP that will operate in the field on battery power only. As described in Section 2, the battery is shipped in a separate carton and therefore must be installed into the 6200 DCP enclosure. No tools are required to install the battery.
YSI 6200 DAS USER Manual 4.4 Installing AC Power to the Field Station WARNING! Wiring should be performed only by a qualified electrician. Do not make connections while AC main power is applied. CAUTION! If you have a unit with a 2-way radio, connect the antenna to the RF connector on the bottom of the enclosure before powering the 6200 DCP. This will avoid possible permanent damage to the radio transceiver. The 6200 DCP has a switchable power supply that can operate on 100 to 240 V~, 50/60 Hz power.
YSI 6200 DAS USER Manual until the AC power installation is complete. If you connect the battery, and it is adequately charged, the 6200 DCP will begin logging data to memory based on it’s last settings. AC Power Receptacle... 3-prong male, recessed 8’ AC Power Cable...
YSI 6200 DAS USER Manual The electrical system must be grounded to avoid possible electrical shock or damage to the equipment. See Section 4.2 which contains information related to grounding, routing wires and lightning and surge protection. WARNING! Turn off all power and assure power “lockout” before servicing to avoid contact with electrically powered circuits. Once you have installed AC power to the 6200 DCP, connect the battery leads as described in Section 4.3.
YSI 6200 DAS USER Manual Battery - Desiccant Pack + Feed-through Gland Analog Inputs Digital I/O Phone Solar Power In To Solar Panel COM Port Solar Power Cable 2-conductor Figure 4.5 Solar Power Supply Connections Once you have installed solar power to the 6200 DCP, connect the battery leads as described in Section 4.3. The field station should beep for about 5 seconds during boot up. Your system is now solar power-connected for continuous charging of the battery when environmental light is present.
YSI 6200 DAS USER Manual Section 5 Connecting Sensors to the Field Station 5.1 Introduction There are five standard sensor packages that may be ordered for use with the 6200 DAS. If you performed the checkout setup described in Section 2, you should be familiar with these sensors. The barometer is factory installed. The other four sensors are connected to the 6200 DCP enclosure using weatherproof MS-style connectors that plug into the bottom of the enclosure and are secured by a threaded nut.
YSI 6200 DAS USER Manual If you followed the procedure recommended in Section 2, you have checked your entire 6200 system in the laboratory and verified that it is functional. In performing this checkout you probably connected all of your sensors to the 6200 DCP. This section describes how to permanently install these sensors at the field station site. There are many ways to mount the various components of the system, but these tend to be site specific. Refer to Appendix E for examples of installations.
YSI 6200 DAS USER Manual The rain gauge should be level. The standard model contains a bubble level inside and 3 adjustment screws for leveling the gauge. Remove the cap/funnel assembly to view the tipping buckets and the bubble level. Be sure that the tipping bucket moves freely. Adjust appropriately and reattach the cap assembly. Tighten the screw-on connector of the rain gauge to the 6200 DCP with your fingers. Do not use tools to tighten this connector. 5.
YSI 6200 DAS MET Suite Wind Speed/Direction Relative Humidity Air Temperature USER Manual 6200 DCP with Standard Sensors Communications Hardware Data Collection Platform Battery Barometer Pyranometer Solar Radiation Rain Gauge 6-Series Sonde Water Temperature Conductivity Dissolved Oxygen pH Rain accumulation Rain rate Figure 5.2 Connecting Sensors to the 6200 DCP 5.
YSI 6200 DAS USER Manual Radio Antenna Field Station Radio Transceiver Battery (charged Solar or AC) 6200 DCP 6-Series Sondes Water Temperature Conductivity Dissolved Oxygen pH ORP Depth/Level and more... Breakout Box MS-8 Patch Cable Computer with EcoWatch DCP Radio Base Station Base Station Sonde #1 Sonde #2 Figure 5.
YSI 6200 DAS USER Manual Radio Antenna Field Station 6-Series Sondes Water Temperature Conductivity Dissolved Oxygen pH ORP Depth/Level and more... Radio Transceiver Battery (charged Solar or AC) 6200 DCP Breakout Box Junction Box MS-8 Patch Cable User-provided SDI-12 cable Computer with EcoWatch DCP Radio Base Station Base Station Sonde #1 Sonde #2 Figure 5.
YSI 6200 DAS USER Manual Radio Antenna Field Station 6-Series Sondes Water Temperature Conductivity Dissolved Oxygen pH ORP Depth/Level and more... Radio Transceiver Battery (charged Solar or AC) 6200 DCP Breakout Box Junction Box Breakout Box MS-8 Patch Cable User-provided SDI-12 cable User-provided SDI-12 cable Sonde #1 Sonde #2 Sonde #3 Sonde #4 Figure 5.
YSI 6200 DAS USER Manual Radio Antenna Field Station 6-Series Sondes Water Temperature Conductivity Dissolved Oxygen pH ORP Depth/Level and more... Radio Transceiver Battery (charged Solar or AC) 6200 DCP Junction Box Computer with EcoWatch DCP Radio Base Station Base Station Sonde #0 Sonde #1 Sonde #2 Figure 5.
YSI 6200 DAS USER Manual 6504 Breakout Box The 6504 Breakout Box is designed to convert one cable with SDI-12 information to two MS-8 Sonde connectors. This box works well with the 6507 Patch Cable. You will need a waterproof gland to fit on this cable. Feed the patch cable through this gland fitting and wire into the TB-1 terminal. Wiring Diagram (1) Red (2) Black (3) Purple or Blue +12 VDC Common SDI-12 (2) MS-8 to Sonde 3/4” conduit to Jct. Box Figure 5.
YSI 6200 DAS USER Manual 6507 Patch Cable The 6507 Patch Cable is used to connect from the MS-8 on the 6200 DCP to a Junction Box or Breakout Box. This cable is 6 ft. (1.8 m) long and has a MS-8 on one end and flying leads on the other. The pin outs are shown below in Figure 5.9. MS-8 Pin A +12 VDC red Pin B Ground black Pin F SDI-12 purple or blue H A G F B C E D “Flying Leads” Patch Cable or Sonde Connector Figure 5.9 6507 Patch Cable Pin Outs and Wire Colors YSI/Massachusetts 508.748.
YSI 6200 DAS USER Manual Section 6 Communicating with the Field Station 6.1 Introduction There are four options for communication between the field station and the base station. The field station is the 6200 DCP which logs data from the installed sensors. The base station is the lab or office with a computer loaded with EcoWatch DCP.
YSI 6200 DAS USER Manual Wind Speed/Direction Relative Humidity Air Temperature Rain accumulation Rain rate Solar Radiation Field Station Barometer Battery (charged Solar or AC) 6200 Data Collection Platform Direct Link (RS232 Cable) 6-Series Sonde Computer with EcoWatch DCP Water Temperature Conductivity Dissolved Oxygen pH ORP Depth/Level and more... Base Station Figure 6.
YSI 6200 DAS USER Manual Wind Speed/Direction Relative Humidity Air Temperature Rain accumulation Rain rate Solar Radiation Field Station Phone MODEM Battery (charged Solar or AC) Barometer 6200 Data Collection Platform Phone Modem 6-Series Sonde Computer with EcoWatch DCP Water Temperature Conductivity Dissolved Oxygen pH ORP Depth/Level and more... Base Station Figure 6.
YSI 6200 DAS USER Manual Although you would typically use one mode of communication between a single field station and a single base station, you are not limited to a single mode of communication. If you plan to use a single base station to interrogate more than one field station, you can also set up a variety of communication modes. See the illustration below (Figure 6.5). For example, if you have a nearby field station, you may be able to use a direct serial interface (cable connection).
YSI 6200 DAS USER Manual While the multiple communications mode shown in Figure 6.5 is one option, you may choose to use a single mode of communication for a multiple field stations. For example, if all of your field stations are within a few miles, and the terrain is flat, you may choose two-way radio communication. Each 6200 DCP is identified by a unique identification number. You can interrogate more than one field station using the same base station radio/modem.
YSI 6200 DAS USER Manual 6.2 Installing RS232 Direct Communication Link The 6200 DAS comes with a 10 ft (3 m) RS232 cable, terminating into DB-9 connectors. Refer to Figure 6.7 for pin out and wire color information. During the lab checkout procedure (see Section 2) you used this cable to connect the COM port on the 6200 DCP to the PC. However, during this checkout you did not need to route the serial cable through conduit or a feed-through gland.
YSI 6200 DAS USER Manual 6.3 Installing RF Radio Communication Link Field Station IMPORTANT! Always connect the antenna before powering the 6200 DCP. This will avoid damaging the radio transceiver. The standard two-way radio telemetry package includes two 2-watt transceivers (467.8 MHz), one field radio and one base radio. You are not required to obtain a license for this system. The field station radio is factory-installed inside the 6200 DCP enclosure.
YSI 6200 DAS USER Manual Base Station Radio The base station radio is AC line powered and connects with the COM cable (provided) to your computer. (see Figure 6.10). Install your base station radio near your PC. Keep in mind that the cable to the antenna will need to be routed outside to the roof. This antenna should be part of the system you ordered.
YSI 6200 DAS USER Manual 6.4 Installing Phone Modem Communication Link The phone modem is factory installed within the 6200 DCP enclosure. It is set at 9600 bps and will only turn on when a phone call is detected. It powers off after 60 seconds of inactivity to conserve power. Connect standard 3-conductor phone wire (0.25 diameter) to the 3-pin connector located near the bottom of the front panel inside the 6200 DCP.
YSI 6200 DAS USER Manual 6.5 Installing Cellular Modem Communication Link The cellular phone modem package includes a full duplex wireless data transmission system installed within the DCP enclosure. The modem is factory-installed, and programmed with the cellular phone number you provided to YSI before it was shipped. Mount the cellular antenna provided with the system to a suitable mounting structure. Connect the antenna to the N-type connector on the bottom of the 6200 DCP enclosure.
YSI 6200 DAS USER Manual 6.6 Setting Up Communication Parameters with EcoWatch DCP After reading through the previous sections you should have a good understanding of how your particular communications method operates. EcoWatch DCP now needs to be setup for your particular method of communication. After it is setup you should test this method to confirm communication and scheduling of data. To change communication methods you must know what COM port you are using for that communications option (i.e.
YSI 6200 DAS USER Manual Cellular Modem Power Considerations A few special considerations must be noted about the Cellular Modem Power. The Cellular Modem Power schedule cannot be changed through Cellular communication. EcoWatch DCP will not allow you to access many menus because the Cellular communications option is chosen. For example, you cannot interrogate the 6200 DCP when the Cell Modem Power is off. The schedule for the Cellular Modem Power can be different from the interrogation schedule.
YSI 6200 DAS USER Manual Section 7 Completing Field/Base Setup and Collecting Data 7.1 Introduction This section describes the tasks required to complete the installation of a 6200 Data Acquisition System.
YSI 6200 DAS USER Manual Constructing the Field Site NOTE When selecting a site for the 6200 DCP avoid other installed equipment. Do not run sonde cables parallel to other industrial or RF equipment. If not already completed you should have performed as much of the permanent installation as possible (less the 6200 DCP). For example, secure the tower, install antennas, mounting brackets for sensors, solar panels or AC junction boxes, phone junction boxes, and similar supporting equipment.
YSI 6200 DAS USER Manual and monitoring power consumption using the battery voltage indicator (internal sensor). Based on your findings, decide on the interrogation frequency. Installing the 6200 at the Field Site Having mimicked your field/base setup, you may now move your 6200 DCP to the field to install it in the supporting structures that should already be in place. Remove the battery during transport.
YSI 6200 DAS USER Manual From the main screen click on the top line menu labeled 6200, then click on New... to bring up the screen titled “Save 6200 DCP Configuration File As”. Type in a filename of your choice (8 character maximum). In the figure below the filename “dock2.s62” has been entered in the upper left hand block labeled File name:. Actually three files (.s62, .zcf, .ini) will be opened and saved in the location shown (c:\ecowwin\sys6200). You have the option to direct the .
YSI 6200 DAS USER Manual Next you may see a message that appears only momentarily. This message indicates that clocks are synchronizing. This is normal. Before you start make sure that your PC clock is set to the desired setting, since the 6200 DCP synchronizes to the PC clock. EcoWatch DCP next attempts to detect SDI-12 sensors, such as YSI 6-series sondes. The addresses of the sondes should be assigned during their setup. Below you see that Sonde 0 has been detected. YSI/Massachusetts 508.748.
YSI 6200 DAS USER Manual Next EcoWatch DCP attempts to detect MET (meteorological) sensors. Although addresses are not assigned to these sensors, you will later see in the data table which MET sensors were detected. If a barometer or pyranometer (solar radiation sensor) was detected, you will need to enter its respective calibration value that was shipped with the 6200 system. YSI/Massachusetts 508.748.0366, Fax 508.748.
YSI 6200 DAS USER Manual Next, EcoWatch DCP offers a list of communication options from which you must select the mode of communication that you will be using between the field installed 6200 DCP and the base station. Remember, even though you are now communicating with an RS-232 direct link connection, the information expected here is for field installation. Later in this section you will enter the appropriate phone number for the phone modem link used in this example setup.
YSI 6200 DAS USER Manual Once setup is complete a window appears to confirm completion. The 6200 DCP will beep for about 5 seconds during boot-up. When you click on Finish, a data table appears showing headers with date/time and specific parameters for either sonde, MET sensor or internal sensor. YSI/Massachusetts 508.748.0366, Fax 508.748.
YSI 6200 DAS USER Manual By clicking on one of the “tabs” at the bottom of the window you can move back and forth among the data tables. Note, you can not display more than one data table at a time and the maximum number of readings is 7 sets (or rows) of data. [dock2.s62: [100]- Direct Connect [COM1] Once you complete the autoconfiguration steps, a window with a data table similar to that seen above should appear.
YSI 6200 DAS USER Manual Messages that appear in the center error/status box provide information that may help you solve a problem. Above, you see that OK is displayed. This is the standard status message seen when a 6200 file is opened or created and it is waiting for the first interrogation. Additional messages are listed below, each followed by a brief description. These messages are not updated continuously, and only describe what has happened last.
YSI 6200 DAS USER Manual Close the 6200 file by choosing 6200, then Close. Unlike the 6200 DCP files which have “.S62” extensions, the EcoWatch DCP data files have a “.DAT” extension. There is one data file for each set of sensors (SDI-12 Sonde, MET and Internal). Each data file contains encrypted information related to time and identity of the file. Using the data file below as an example (10782M20.DAT), note the following...
YSI 6200 DAS USER Manual ✓ YSI/Massachusetts 508.748.0366, Fax 508.748.
YSI 6200 DAS USER Manual Notice that there are two folders: Site/Timing and Communication/Power. Site/Timing should appear first and the Description box may be highlighted. By default, it reads . The record number 100 may be any number between 100 and 999 since this value increments each time a new field station is added. You may type in a description of your choice or you may tab to the next box, therefore accepting the default description.
YSI 6200 DAS USER Manual Now click on the Communication/Power folder and verify that communication is Phone MODEM and the COM port agrees with the serial port to which you are connected (COM2 in our example screen). The appropriate phone number should be typed into the box in the upper right quadrant of this screen. If not, do so now. The power source in our example is Battery, but you should put in whatever power source your have installed.
YSI 6200 DAS USER Manual Section 8 Reporting and Plotting Data with EcoWatch DCP 8.1 Introduction There are many features in EcoWatch DCP related to viewing, plotting, manipulating and reporting data collected from the 6200 DCP. In this section we describe some of the most common functions you will use. As with the 6200 DCP menu described in the previous section, a convenient Windows Help section and tutorial is available to guide you through the examination of your data.
YSI 6200 DAS USER Manual Figure 8.1 Opening a File You may immediately notice some daily variations in parameters such as dissolved oxygen, pH and temperature in this particular study. This is fairly typical in many natural bodies of water. Note also that conductivity is low at the beginning and end of the study. Other similar perturbations at the beginning and end may also be evident.
YSI 6200 DAS USER Manual 8.3 Viewing Data To look at some of the viewing options, click on View. Note that the Toolbar and Status Bar are turned on (check mark). In addition, the 4-Digit Year expression is checked. This option may be especially useful and desirable as we move to the next millenium. Also note that a check mark is just left of the Graph choice (see figure 8.2). This explains why all data are expressed graphically in the opening window.
YSI 6200 DAS USER Manual It may be somewhat awkward to scan the data table in this manner, therefore you have the option to turn off the graphical representation and allow the table to fill the window (see Figure 8.3). Click on View then Graph. Now, when you click on View, the Graph item is no longer checked. Figure 8.3 Viewing the Data in Table Format Viewing features such as Grid, Marker, Zoom In, Zoom Out and Unzoom are all available when you activate the Graph function.
YSI 6200 DAS USER Manual The Statistics and Study functions of EcoWatch DCP are shown in Figure 8.4. Both provide overview information related to the study data. The Statistics function lists minimum, maximum, mean and standard deviation information for each parameter activated. The Study function provides useful information about the design of the study including sample interval, date/time, number of samples, sensor identification and parameters reported.
YSI 6200 DAS USER Manual Using the right mouse button, click at any point on the graph. A dotted vertical line appears along with specific data values in boxes to the left of the displayed graphs (see Figure 8.5). You can hold down the right mouse button and move the mouse to scan the entire graph that is displayed in the window. The values in the boxes change as you move the mouse.
YSI 6200 DAS USER Manual 8.4 Changing Display Formats using Setup Beyond selecting data viewing options such as table format or graphical format, you may also customize your data displays. For example, you may change the order in which parameters are viewed, you may add and delete parameters, you may change plot appearance using different interval times and different units, and you may change the x-axis if you prefer a parameter other than date or time.
YSI 6200 DAS USER Manual If you are displaying the graph, you may change the appearance by changing font, font style, size and text color. You may also change page color, trace color and graph background color. You may assign a custom 2-line title for the graph, and finally, you may display 1 trace or 2 per set of axes. For display of table formatted results you may change font, font style, size and text color. In addition, you may change table color and highlight color.
YSI 6200 DAS USER Manual One very commonly used function is Limit Data Set. If you choose this function by clicking on the highlighted item as shown below, you then use the mouse to move your cursor to the left limit of an area of interest, click once, then move the mouse to the right limit of interest and click again. The result will be a close up look at the specific area of the graph you have defined. Refer to Figure 8.8 below to see the results of this particular feature. Figure 8.
YSI 6200 DAS USER Manual Figure 8.9 Saving, Exporting, Printing and Related Functions 8.7 Example of Customizing a Subset of SAMPLE.DAT Using SAMPLE.DAT we decided that some of the data were not of particular interest, so using top line menu item Setup, then Parameters, then Add/Remove.., we removed ORP and Depth results from the data set (see figure 8.10). Note that we have not deleted this information from the file, but rather we are choosing not to display it.
YSI 6200 DAS USER Manual readings. DO rises again during the day due to photosynthesis, CO2 then falls and pH increases again. Figure 8.10 Customizing a Graph from SAMPLE.DAT As you become more familiar with EcoWatch DCP, the plotting, analysis and reporting functions can be accomplished easily and quickly. Practice with all of the functions and, again, do not forget to use Window’s Help for more detail. YSI/Massachusetts 508.748.0366, Fax 508.748.
YSI 6200 DAS USER Manual Section 9 Maintaining and Troubleshooting the System 9.1 Introduction This section outlines the care and maintenance that your 6200 DAS will require. The troubleshooting section outlines the basic procedures that we recommend you perform before contacting your dealer. The following paragraphs and tables should be helpful in identifying the cause of possible problems that may occur during initial setup and or during normal operation.
YSI 6200 DAS USER Manual Wind Speed/Direction This sensor requires very little maintenance, however, it does incorporate moving parts which will eventually wear out. A more detailed maintenance section is provided in the manufacturers’ instructions manual. Inspect the sensor body for physical damage or loose parts such as the anemometer blade or the sensor mount. Clean unit with mild soap and water as necessary.
YSI 6200 DAS USER Manual Power The system operates from a 12 volt DC battery. In the event the main source of power fails or some how gets disconnected, the, fully charge battery will provide backup power for over 10 days at a 15 minute sample rate. If the sampling rate is increased, more power will be used, thus, the reserve days will decrease.
YSI 6200 DAS USER Manual cover the connector with a connector boot or electrical tape. Always insure that water drops will drip away from the connector and not towards it. Periodically disconnect the cables and check both connectors for signs of corrosion. DCP Enclosure The enclosure is NEMA4X rated which will withstand splashing water. Inspect the door seal for signs of deterioration or cracking, if a cable gland is not used, plug the hole.
YSI 6200 DAS USER Manual 9.3 Troubleshooting In order to solve just about any problem that might arise with the 6200DCP, one must have a basic understanding about computers in general, the Windows platform, YSI’s EcoWatch for Windows program and some basic electronics knowledge.
YSI 6200 DAS USER Manual 6200 DCP The first method to recover a lost 6200 DCP system is to use the AutoConfig function. This will result in the loss of data that has already been collected; however, it will check all sensors, re-program, and reset the system. The 6200 DCP contains the circuit board that collects all of the data and the communication methods. This circuit has an EEPROM that is programmed by EcoWatch DCP to carry out it’s tasks.
YSI 6200 DAS USER Manual Checking Bit Alarms The 6200 DCP records BIT flags as a parameter in the internal sensors file. You can use EcoWatch DCP to view these flags by opening the internal sensors file (with the i in the 6th position) then selecting Setup:Parameters:Add/Remove and selecting BIT Alarm. Alarm processes Many of the alarm processes have both process outputs (a status value of 1 or 0) and digital outputs (high or low).
YSI 6200 DAS USER Manual Sensors Since all sensors are excited separately, it is possible to have some sensors working while others are not, in some cases the data pattern could be indicative of the problem, in other circumstances its hard to tell. A bad sensor output might show up as noisy or continuously stable, never changing. Noisy data, particularly if it occurs in cycles could mean moisture getting into the cable wires or connector pins.
YSI 6200 DAS No wind direction or noisy output indicated. Note: There is no wind direction without wind speed first. Note: The 6200 DCP does not average readings. It will take a reading according to the time stamp on the data. No air temperature Displayed USER Manual Damaged sensor or 6200 DCP input channel. Sensor potentiometer and wiper is within specification.
YSI 6200 DAS USER Manual Barometer The barometer sensor is mounted within the 6200 DCP, it is vented to the outside via a small tube right next to the antenna connector. SYMPTOMS Barometer POSSIBLE CAUSE Hello signal not present ACTION Disconnect the barometer cable from the 6200 DCP interface During setup the board. Use a multimeter or DVM Barometer sensor is to check the barometer connector. not detected by the Pin 5 to 6. Pin 5 should measure EcoWatch 6200 3.
YSI 6200 DAS No solar radiation data displayed USER Manual Use DVM to measure miliVolts output directly on pin A to C. Under a fluorescent light you should read 200 to 300 miliVolts. If sensor has no output under fluorescent or sun light. Return unit to factory 5.4 Rain Gauge The Rain Gauge is connected through its own connection on the bottom of the 6200 DCP. In order for EcoWatch 6200 auto configuration to work, the rain gauge sensor cable connector has to be mated to the 6200 DCP.
YSI 6200 DAS USER Manual Sondes The YSI sondes are detected in a different manner from the other sensors. EcoWatch instructs the 6200 DCP to scan and identify any SDI-12 device connected to the SDI-12 bus/port. As each device is found the 6200 records the sondes’ setup information. This information is then used by the 6200 DCP to create a configuration file. This file is then used to program the 6200 DCP sensor, process and output settings automatically.
YSI 6200 DAS Solar panels not charging battery USER Manual Bad solar panel Bad cable or connector problems Check solar panel with no load voltage, typically 20 VDC in direct sun. Insert the DVM (in current mode) in series with one of the solar panel leads, you can use either lead, positive or negative to measure the solar panel output current. Find break or damaged wire or connector and repair or replace it 4.5 4.5 Solar panels degrade overtime, typically 5 % of full output every 10 years.
YSI 6200 DAS USER Manual Phone modem Communication The phone modem is set to factory default profile. SYMPTOMS Phone modem POSSIBLE CAUSE Depleted battery 6200 DCP will not respond to the base station modem Damaged modem at base station or corrupted modem profile Damaged modem at site or corrupted modem profile Modem connects, no data or 6200 DCP user screen displayed 6200 DCP modem port control pins not detecting the ring, thus, the 6200DCP can not strobe the power to the modem.
YSI 6200 DAS USER Manual Cellular modem Communication Only one change is necessary to the cellular active profile, change the S0 register to =2, this value will force the phone to auto answer on the second ring.
YSI 6200 DAS USER Manual Radio Communication Caution: Any type of RF work requires a certified technician/engineer. Never use more RF power then required. The RF transceiver is used “as is” from the factory. The simplex communication always starts at the base station to the site(s). Because each base transmission packet contains site ID information, only one site at a time will respond.
YSI 6200 DAS USER Manual Appendix A Component Descriptions and Specifications 6076 EcoWatch DCPä ä Description... EcoWatch DCPä is a Window’s-based software program specifically written to control and manage 6200 DCP. Features...
YSI 6200 DAS USER Manual 6200 Data Collection Platform Description... The 6200 DCP is a field station designed to collect environmental data (meteorological and water quality) and to transmit these data via radio, phone modem, cellular modem or direct line to a base station. The field station is powered by a 12 vdc battery, trickled charged by solar panel or AC charger.
YSI 6200 DAS USER Manual DCP Electronics Motorola 68332 32-bit microcontroller, 16 MHz 64 KB Memory, 8KB Logging Memory is standard (200 KB and 944 KB memory options) 10 single-ended analog inputs (5 differential), 18 bit resolution, 1 sample/sec, with 10 ranges, ±0.005 to ±5 VDC, gain and attenuation is software programmable 3 configurable digital input/ouput channels 2 switched excitation outputs of 1.25, 2.5, 5.
YSI 6200 DAS USER Manual 6205 Terminal Block Transient Protection Description... The standard 6200 DCP has full isolation and lightning protection on all external connections and standard internals such as telephone connection, DB-9 RS-232 communications port and solar charger. The 6205 factory-installed option provides full isolation and lightning protection on the expansion terminal block, which is not protected on the standard unit. Features...
YSI 6200 DAS USER Manual 6213/6219 MET Sensor Suite Description... The MET sensor suite provides instantaneous measurement of wind speed, wind direction, relative humidity and air temperature. It is designed as one multi-sensor unit with a single interface cable that has strain relief at the sensor. The cable terminates in a 17 pin MS style connector. Two versions are available, P/N 6213 - 15 ft (4.6 m) and P/N 6219 - 45 ft (13.7 m). Features...
YSI 6200 DAS USER Manual 6214 Pyranometer Description... The pyranometer (solar radiation sensor) features a silicon photovoltaic detector mounted in a fully cosine-corrected miniature head. The sensor comes with a 10 ft (3 m) cable terminating in a 5 pin MS connector. The detector is mounted to an aluminum base along with a bubble level. Mounting arm and bracket, P/N MAZ6253 may be purchased for tower mounting. Features...
YSI 6200 DAS USER Manual 6215 Rain Gauge Description... The rain gauge uses a tipping bucket mechanism. The mechanism is designed so that one tip of the bucket occurs for each 0.1 inch (0.1mm) of rainfall. A bubble level mounted to the base and 3 adjustment screws, along with a 15 ft (4.6 m) cable terminating in a 4-pin MS connector make the sensor easy to install. Features... Stainless steel, aluminum and plastic housing 3 leveling knobs and bubble level Specifications...
YSI 6200 DAS USER Manual 6216 Heated Rain Gauge Description... The rain gauge sensor consists of a gold anodized aluminum connector funnel with a knife edge that diverts the water to a tipping bucket mechanism. The mechanism is designed so that one tip of the bucket occurs for each 0.1 inch (0.1mm) of rainfall. The aluminum housing is covered with a white baked enamel surface to withstand years of exposure to the environment. The rain gauge is supplied with a 15 ft (4.
YSI 6200 DAS USER Manual 6217 Barometer Description... The sensor is a monolithic piezo-resistive barometer pressure sensor with minimal temperature compensation. The barometer, with vent tubing, mounts inside the NEMA enclosure and requires no user installation. The vent tube vents to the bottom of the enclosure for minimum exposure to the weather. An ice boot offers protection from the formation of icicles. Features...
YSI 6200 DAS USER Manual 6221 Radio Description... The two-way radio telemetry package uses a programmable FM transceiver. The frequency shift keying (FSK) radio modem is mounted on the DCP main circuit board. Modulation meets CCITT v.32 specifications at 1200 baud. Signal lines include transmitted audio (TXA), receive audio (RXA) and push-to-talk (PPT, active low open protector). The radio is factory-installed in the 6200 DCP and the FSK modem is installed only on systems ordered with the radio option.
YSI 6200 DAS USER Manual Transmitter Bandspread Frequency stability RF power output RF output impedance Modulation distortion Duty cycle Transmitter attack time Spurious and harmonics FM hum and noise Modulation input impedance Modulation response Modulation response Current drain 15 MHz VHF 5 ppm 5 watt, programmable to 2 watt 50 Ω <4% 50% 14 ms maximum -50 dBc maximum 43 dB 100 KΩ @ both pins 1 and 8 @ Pin 1: 20 - 5000 Hz ±1.
YSI 6200 DAS USER Manual 6222 Telephone Modem Description... The modem is a standard Hayes-compatible modem, which can operate directly from 12 VDC battery power. (The wall socket adapter (if enclosed) is not used within the 6200 DCP enclosure.) The modem saves power by automatically entering sleep mode when it encounters five seconds of no activity. This option is factory-installed and factory-configured. Features...
YSI 6200 DAS USER Manual 6223 Cellular Phone/Modem Description... The wireless phone modem uses the PSTN through the cellular telephone network. The modem communicates at 300, 600, 1200 or 2400 bps. Normally, the modem will be delivered operating at 1200 bps in the 6200 DCP. This option is factory-installed and factory-configured. The end-user provides their cellular number before shipment. Features... Full duplex wireless data transmission over cellular network Bell 103, 212A or CCITT V.21, V.22 and V.
YSI 6200 DAS USER Manual 6240 AC Charger Power Option Description... This option is a constant voltage power supply with a current limiting feature. This option is factory-configured. If the AC charger is not present, the 3-prong AC socket inside the 6200 DCP is not present. Features... Fully automatic single-step front charging circuit Charger circuitry has temperature compensation on the 6200 I/F board Specifications...
YSI 6200 DAS USER Manual 6241 Solar Panel Power Option Description... The solar panel option is intended for use in applications requiring relatively low amounts of power. It is designed for use in nominal 12 VDC systems and rated at 10 watts peak power. The 30 ft (10 m) cable terminates in a 2 pin connector which plugs into the 6200 interface panel inside the NEMA enclosure. All installation brackets for the solar panels are included. Features...
YSI 6200 DAS USER Manual 6244 12 Ah Battery Description.. This is intended as a replacement/spare of the 12 VDC, 12 Ah Lead Acid Battery used in the 6200 DCP. Features... Compact, Economical and Rugged Recovers well from a deep discharge Sealed lead acid battery - maintenance free Polarized FASTON connection tabs Specifications... Physical Size Weight 8.4 x 2.8 x 5.5 inches [21.3 x 7.0 x 14.
YSI 6200 DAS USER Manual 6250 Radio Base Station Description.. The radio base station incorporates both the radio and the modem into a single package. The radio uses 2 watts of power. The frequency shift key (FSK) radio modem is mounted to the main circuit board. Modulation meets CCITT V.32 specifications at 1200 baud. Signal lines provided are transmitted audio (TXA), receive audio (RXA), and push-to-talk (PPT, active low open collector).
YSI 6200 DAS USER Manual 6251 3-Meter Tower Description.. The 6251 is a 3-meter tower is a portable steel tripod. Guy wires are provided for permanent installation on earth or gravel surfaces. Features... Lightweight Rugged Easy to install Specifications... Physical Height Weight 7.5 ft. [2.3 m] 16 lbs. [7.2 kg] Warranty 1 year YSI/Massachusetts 508.748.0366, Fax 508.748.
YSI 6200 DAS USER Manual 6252 10-Meter Tower Description.. The 6252 10-meter tower is a free standing aluminum tower. Universal Aluminum Tower sections are each about 10 ft (3.3 m) in length and use an equilateral triangular welded truss. The base is normally set in concrete and should be bolted to the bottom tower section to ensure correct equilateral spread of the base. The base should be leveled and the concrete should be allowed to set up for 3 to 4 days before erecting the remainder of tower.
YSI 6200 DAS USER Manual Appendix B Required Notice The Federal Communications Commission defines this product as a computing device and requires the following notice. This equipment generates and uses radio frequency energy and if not installed and used properly, may cause interference to radio and television reception.
YSI 6200 DAS USER Manual Appendix C Warranty and Service Information The YSI 6200 Data Acquisition System, including standard sensors and accessories, are warranted for one year from date of purchase by the end user against defects in materials and workmanship. The 6200 Data Collection Platform enclosure, wiring harness, CPU and Sensor Interface circuit boards are warranted for three years from the date of purchase against defects in materials and workmanship.
YSI 6200 DAS USER Manual Appendix D Accessories Basic System The following come standard with the 6200 DAS Field Station (6200 DCP) ♦ 6200 DCP (data collection platform) with 32-bit microcontroller, 16 MHz...
YSI 6200 DAS USER Manual Appendix E Field Installation Examples The following examples represent some typical field installation sites showing use of a variety of mounting supports for the 6200 DCP enclosure as well as various sensors that may be used with the 6200 DAS. These photographs and brief descriptions may provide you with some ideas related to how to set up your field station. NOTE When selecting a site for the 6200 DCP avoid other installed equipment.
YSI 6200 DAS USER Manual Site B…Remote Land-based Weather and Groundwater Monitoring Tripod Mount, Solar Powered, Cellular Communications Link Meteorological Sensors and 6-Series Sonde for Groundwater Monitoring Wind speed/direction RH and Temperature Solar Panel Cellular Antenna 6200 DCP 6-series sonde 3 meter Tripod support Monitoring well Rain gauge In Site B above, you see a field station that combines both meteorolgoical and water quality sensors.
YSI 6200 DAS USER Manual Site C…Remote Bridge-based Meteorological and Water Monitoring Bridge Rail Support, Solar Powered, Cellular Communications Link Meteorological Sensors and 6-Series Sonde for River Monitoring (swift moving water) Wind speed/direction RH, temperature Cell antenna Solar panel 6200 DCP attached to 2” support pipe Bridge 6-series sonde PVC sonde support In Site C above, you see a field station that combines meteorological and water quality sensors with a 6200 DCP mounted to the
YSI 6200 DAS USER Manual Site D…Coastal Field Station for Weather and Water Quality Monitoring Tripod Support, Solar Powered, Cellular Communications Link Meteorological Sensors and 6820 Sonde (shown out of water in photo below) Wind speed/direction RH, Air temperature Solar panel Cellular antenna 6200 DCP Tripod Support 6820 Sonde In Site D above, both meteorological and water quality sensors are used at this field station on a rocky marine coastal environment.
