OPERATING INSTRUCTION MANUAL MODEL 2200C CONDUCTIVITY ANALYZER REV. 7.0 AquaMetrix Inc. 22-121 Granton Drive Richmond Hill, ON Canada, L4B 3N4 Tel: (800) 742-1413 (905) 763-8432 Fax: (905) 763-9480 www.aquametrix.
TABLE OF CONTENTS SECTION DESCRIPTION PAGE 1 GENERAL INFORMATION 1 2 SPECIFICATIONS 2 3 INSTALLATION 3 4 DESCRIPTION OF FUNCTIONS 6 5 START-UP AND OPERATION 11 6 OPERATING HINTS 16 7 UTILITY MENU 17 8 DIAGNOSTICS 21 9 TROUBLESHOOTING AND SERVICE 22
MODEL 2200C CONDUCTIVITY CONTROLLER INSTRUCTION MANUAL 1.0 GENERAL INFORMATION The AquaMetrix Model 2200C conductivity analyzer is a versatile industrial microprocessor based instrument. Setpoints and outputs are programmed through the menu with push buttons on the face of the instrument. Calibration is achieved from the front panel menu. The instrument may be used in conjunction with any AquaMetrix MS series cell. The instrument provides non-isolated 0-5 Vdc, 0-1 mA and isolated 4-20 mA analog outputs.
2.0 SPECIFICATIONS DISPLAY: 4 digit LED, 1/2" high digits MEASURING RANGES: Eighteen ranges; The range is set at the factory as ordered, but maybe changed in the field to any other range through the Utility Menu. Temperature: 0°C to 100°C (32°F to 212°F) POWER REQUIREMENTS: Standard: 98-132 Vac, 50/60 Hz (less than 5 VA) Optional: 196-264 Vac, 50/60 Hz (less than 5 VA) 23-26Vdc (nominal current 150mA) AMBIENT CONDITIONS: -30 to 50°C (-22 to 122°F) 0 to 90% R.H.
3.0 INSTALLIATION 3.1 Location 3.1.1 Locate the instrument within 3000 feet of where the AquaMetrix MS or MC conductivity cell is installed. 3.1.2 Select an installation site which is: • free of mechanical vibrations • reasonably clean and dry • protected from falling corrosive fluids within the ambient temperature and humidity specifications • remote from high voltage relay and power switches 3.2 Type of Mounting 3.2.
3.4 Electrical Connections CAUTION: The instrument operates from line voltage. This constitutes a possible shock hazard. Ensure that line power is removed before attempting connections. Note: A separate source of line power may have been connected to the floating relay contacts. 3.4.1 To access the terminal strips open the door of the instrument and then unscrew the captive retaining screw near the upper right hand corner of the panel.
CAUTION: Connecting the line voltage to incorrect terminals may cause serious damage. 3.5 Cell Connections 3.5.1 Model 2200C Connect the 4 wires of the cell cable to the TB2 terminal strip on the main circuit board being sure to match the colors as printed on the TB2 terminal strip. White and black are the electrode wires; red and green are the temperature sensor wires. Place switches S41 and S42 in the down “on-line” position. Refer to Fig.
3.5.2 4.0 The test resistor R68, is used for the simulation feature. It has a resistance equal to the equivalent resistance of the cell at mid scale. The resistor that is shipped with the unit corresponds to the mid scale of the range ordered. If the range is changed, from the range configured at the factory. Refer to Sec. 9.1.5 for the correct resistor value.
4.1 Overview 4.1.1 The Model 2200C is a microprocessor based conductivity analyzer designed for industrial applications. It is compatible with AquaMetrix’s MS and MC conductivity cells and offers several measurement ranges. The unit's software makes maintenance and operation easy. 4.1.2 The outputs include voltage-free relay contacts and industry standard analog transmission signals. Two programmable relays are provided for process control and alarm.
4.2 Calibration 4.2.1 All conductivity systems need to be calibrated when first placed in service and thereafter from time to time. The frequency of calibration can only be found by the operator’s experience with each process. Calibration must always be performed when a new sensor is placed in service. 4.2.2 Calibration is accomplished by using buffer solutions, of known conductivity, and adjusting the instrument to show the known value.
4.5 Analog Outputs 4.5.1 The analog output signals consist of a non-isolated 0-1 mA, 0-5 Vdc, and isolated 420 mA signals. 4.5.2 From the factory all of the analog outputs have a linear range corresponding to the full range of the instrument. The analog outputs can be programmed to another linear range by entering two values: • Output High: This is the conductivity value at which you wish to have 100% output. • Output Low: This is the conductivity value at which you wish to have 0% output. 4.5.
The items that appear in the operations menu are: • • • • • • • • • • • • • • Password Test Calibration Temperature Status Cell Constant Range Output High Output Low Cycle On / Off Control Relay Setpoint Control Relay Deadband Alarm Relay High Alarm Relay Low 4.7 DIP Switches Model 2200C 4.7.1 The controls which are frequently used in the normal operation of the instrument are all accessible on the control panel.
6 7 8 Reserved Reserved Reserved Note: Items in “BOLD” are the factory settings that the unit will be shipped with. 4.8 Output Hold 4.8.1 Output hold, is a function which freezes all output signals at the last value to prevent the occurrence of wild distortions during programming and maintenance. 4.8.2 When the Operations Menu is entered by pressing CALL, the relays and the analog outputs are automatically placed on hold and remain on hold until the instrument returns to on line.
5.0 START-UP AND OPERATION 5.1 Password 5.1.1 To enter the menu press CALL and the PASSWORD LED will illuminate. If the password feature has been disabled by the dip switch, TEST will be the first menu item illuminated when the CALL button is pressed. With each press of CALL button you will step through the menu. When the last item, ALARM LOW is reached the menu wraps around to TEST. If you have enabled PASSWORD by placing DIP Switch No.
c) The system is now calibrated. Press RUN to place the instrument on line or use the CALL key to proceed to other menu items. 5.3 Analog Output Range Expand 5.3.1 To increase the resolution of the analog outputs, the range may spread over any section of the scale. As long as it spans at least 10% of full scale. The best way to describe this setup is by example. Suppose you wish the outputs to span from 400uS to 600uS.
b) Press RUN, to place the instrument on line, or press CALL for another menu selection. 5.5 Control Relay Deadband 5.5.1 If you have configured the relay to control decreasing conductivity, the deadband will be higher than the setpoint. i.e. the auxiliary device connected to the relay will increase the conductivity. If you have configured the instrument to control increasing conductivity, the deadband will be lower than the setpoint. i.e.
iv) With this configuration when the process reaches the Control Relay Setpoint the relay will cycle continuously 30 seconds activated, 60 seconds deactivated until the Deadband Relay A setting is passed. NOTE: As shipped from the factory the OFF time is set at 10 seconds and the ON time is set at 5 seconds. 5.7 Alarm High 5.7.1 The instrument is fitted with a relay, which is set to activate on both high and low alarm conditions. The deadband is factory set. To set the ALARM HIGH proceed as follows.
a) To enter the menu press CALL, the TEST LED will be illuminated. Use the arrow keys to change the display. The outputs will react to the changes in the display, as if the unit was online and the process was actually changing. b) Press RUN to place the instrument on line, or press CALL, for another menu selection. 5.10 Temperature 5.10.1 The temperature of the process can be read at any time by entering the menu and scrolling through the menu until TEMPERATURE LED is illuminated.
5.12 Range 5.12.1 This menu item is read only, it displays the maximum range of the instrument as currently configured. You may change the range in the Utility Menu. Refer to Section 7.3. 5.13 Cell Constant 5.13.1 This menu item is read only, it displays the cell constant required for the range, as it is currently configured. 6.0 OPERATING HINTS 6.1 Cell Care 6.1.1 Keep the cell clean using the procedure recommended in the cell manual. The frequency of cleaning depends on the solution being monitored.
6.5.1 It may be useful during some system maintenance procedures to place the relay and analog outputs on hold. To accomplish this simply press CALL. To return to on line operation press RUN. (If the instrument is in TEST the outputs will not be in HOLD if the arrow buttons are touched.
Alarm Low 4-20 mA Output Adjust High 7.3 Range Selection 7.3.1 Model 2200C The table below shows the ranges which are available for the 2200C together with the relevant cell constant for each range. Range uS 0-2uS 0-5 uS 0-10 uS 0-20 uS 0-50 uS 0-100 uS 0-200 uS 0-500 uS 0-1000 uS 0-2000 uS 0-5000 uS Required Cell Constant 0.01 0.01 0.05 0.05 0.05 0.05 0.5 0.5 0.5 1.0 1.
7.3.2 To change the range of your instrument to any range shown above proceed as described below. (Note that changing the range may require a change of conductivity cell.) a) Enter the Utility Menu as described in 7.2.1. b) Press CALL until the RANGE LED illuminates, which is “Range Change” in the Utility Menu. See table in 7.2.2. c) The display will now show the range as currently configured. Use the arrow buttons until the display shows the desired range. Press ENTER.
a) Turn off the power to the instrument. Connect your DVM in parallel with the 0-5 Vdc output terminals on the power supply board. b) Turn on the power. Enter the Utility Menu as described in 7.2.1. c) Press CALL until the CONTROL RELAY SETPOINT LED illuminates, which is "0-1 mA/ 0-5 Vdc output adjust, low" in the Utility Menu (See table in 7.2.2). Use the arrow keys to make your DMM read 1.25V. Press ENTER twice to confirm.
8.0 DIAGNOSTICS 8.1 Description 8.1.1 The 2200C has diagnostic features which alerts the operator to invalid entries and memory loss. Invalid entries are indicated by the flashing of the appropriate menu LED. The flashing will commence after RUN is pressed and will continue until the errors are corrected. Memory loss is indicated by the flashing of TEST and by the alarm relay if enabled by DIP Switch No. 5 of Bank S1. See Section 4.7.3. 8.2 Invalid Calibration 8.2.
8.4.1 Invalid Alarm will be indicated if the Low Alarm is set higher than the High Alarm. To correct, refer to Section 5.6 and 5.7. 8.5 Invalid Setpoint 8.5.1 9.0 The deadband setting must be lower than the Setpoint if you are controlling rising conductivity, and higher than the Setpoint if you are controlling falling conductivity. If you have not made these settings correctly, invalid entry will be indicated by a flashing LED. To correct, refer to Section 5.4 and 5.5. TROUBLESHOOTING AND SERVICE 9.
from the line voltage terminals or perhaps from a separate breaker or DC supply. Use the TEST menu feature to simulate the input values to observe the switching points. Check that your process control elements can function independently of the 2200C. Next check with a test light or an Ohmmeter (power off to the relay contacts, wires to the control elements disconnected) that the contacts of the respective relay are making contact when actuated. If a relay is malfunctioning, it may be necessary to change it.
0-500 uS 0-1000 uS 0-2000 uS 0-5000 uS Range mS 0-10 mS 0-20 mS 0-50 mS 0-500 mS 0-1000 mS 0.5 0.5 1.0 1.0 Required Cell Constant 10 10 10 50 50 2000 1000 1000 400 R68 Value 2000 1000 400 200 100 c) Set the temperature simulation DIP switch No. 1, S43 ON and Switch No. 2 OFF. This is to simulate 25°C. Set the conductivity simulation DIP switch No. 1, S44 ON and switch No. 2 OFF. The display should indicate mid-range ±5%.
with the factory set default values. This means that the range selection and the conductivity calibration must be performed after an "ESCAPE" procedure. After that, all the control, alarm and scaling parameters mentioned above must be set to the user values. 9.2.4 To perform the ""ESCAPE"" proceed as follows. a) Turn off the power. b) Press and hold the RUN button for about 3 seconds, while turning on t he power.
is fastened to the front panel by five screws. Remove the screws to release the circuit board. 9.4 Customer Service 9.4.1 If a problem has not been resolved with the above procedures, a telephone consultation with your AquaMetrix representative, or directly with AquaMetrix will provide the answer. AquaMetrix Inc. 22-121 Granton Drive Richmond Hill, Ontario L4B 3N4 Canada Tel: (800) 742-1413 (905) 763-8432 Fax: (905) 763-9480 Email: support@aquametrix.com 9.6 Parts and Accessories 9.6.
STATEMENTS OF CONFORMITY FROM THE MANUFACTURER U.S.A. WARNING: This equipment generates, uses, and can radiate radio frequency energy and if not installed and used in accordance with the instructions manual, may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference when operated in a commercial environment.
