Hart Scientific 1522 Handheld Thermometer Readout User’s Guide Rev.
Fluke Corporation, Hart Scientific Division 799 E. Utah Valley Drive • American Fork, UT 84003-9775 • USA Phone: +1.801.763.1600 • Telefax: +1.801.763.1010 E-mail: support@hartscientific.com www.hartscientific.com Subject to change without notice. • Copyright © 2005 • Printed in USA Rev.
Table of Contents 1 Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 1.2 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2.1 1.2.2 1.3 WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 CAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Authorized Service Centers. . . . . . . . . . . . . . . . . . . . . .
6.5 Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 6.6 INFO-CON Connector . . . . . . . . . . . . . . . . . . . . . . . 29 7 Display Functions. . . . . . . . . . . . . . . . . . . . . . . . . 31 7.1 Blank Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 7.2 7.3 Min/Max Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Demand Logging . . . . . . . . . . . . . . . . . . . . . . . . . . 33 7.3.1 7.3.2 7.3.3 7.4 Demand Log Label and Data Storage .
8.2.1 8.2.2 Primary Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Calibration Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 9 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 9.1 Required Equipment. . . . . . . . . . . . . . . . . . . . . . . . . 53 9.2 Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . . . 53 10 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 11 Troubleshooting. . . . . . . .
Figures and Tables Table 1 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 iv International Electrical Symbols . . . . . . . . . . . . . . . . . . . . . 1 Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Top and Side View . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 INFO-CON Connector . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Infrared Dongle . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Before You Start Symbols Used 1 1.1 Before You Start Symbols Used Table 1 lists the International Electrical Symbols. Some or all of these symbols may be used on the instrument or in this manual.
1522 Handheld Thermometer Readout User’s Guide Symbol Description Canadian Standards Association OVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per IEC1010-1 refers to the level of Impulse Withstand Voltage protection provided. Equipment of OVERVOLTAGE CATEGORY II is energy-consuming equipment to be supplied from the fixed installation. Examples include household, office, and laboratory appliances.
1 Before You Start Safety Information • The AC adapter has circuits with high voltage inside that could present danger of electrical shock or fire if exposed. If the AC adapter is damaged in any way or becomes hot, discontinue its use immediately, disconnect it from any AC supply, and have it replaced. Do not attempt to open, repair, or continue using a damaged or defective AC adapter. • The instrument batteries can present danger if not handled properly.
1522 Handheld Thermometer Readout User’s Guide • Keep the probe wires clean and away from fluids. 1.3 Authorized Service Centers Please contact one of the following authorized Service Centers to coordinate service on your Hart product: Fluke Corporation, Hart Scientific Division 799 E. Utah Valley Drive American Fork, UT 84003-9775 USA Phone: +1.801.763.1600 Telefax: +1.801.763.1010 E-mail: support@hartscientific.com Fluke Nederland B.V.
1 Before You Start Authorized Service Centers Fluke South East Asia Pte Ltd. Fluke ASEAN Regional Office Service Center 60 Alexandra Terrace #03-16 The Comtech (Lobby D) 118502 SINGAPORE Phone: +65 6799-5588 Telefax: +65 6799-5588 E-mail: antng@singa.fluke.
2 Introduction 2 Introduction The Hart 1522 is a low-cost, high-accuracy digital thermometer readout designed to be used with PRTs and thermistors. The unique combination of features makes this instrument suitable for a wide variety of applications in industry. Features and capabilities of the 1522 include the following: • Accepts input from platinum resistance thermometers (PRTs) and thermistors • Works with Hart’s INFO-CON probe connector (which is partially based on U.S.
3 Specifications and Environmental Conditions Specifications 3 3.1 Specifications and Environmental Conditions Specifications Resistance Range 0Ω to 500 kΩ Resistance Accuracy, PRT, one year† 0Ω to 25Ω: 0.002Ω 25Ω to 400Ω: 0.008% (80 ppm) of reading Resistance Accuracy, thermistor, one year† 0Ωto 2 kΩ: 0.4Ω 2 kΩ to 200 kΩ: 0.02% (200 ppm) of reading 200 kΩ to 500 kΩ: 0.
1522 Handheld Thermometer Readout User’s Guide Digital Filter Exponential with adjustable time constant (1 to 60 seconds) Remote Communications RS-232 serial, infrared Display LCD, 6-digit x 7-segment with 16-character alphanumeric Operating Temperature Range 0 to 40°C (32 to 104°F) absolute 15 to 35°C (59 to 95°F) full accuracy Power 12 VDC (AC adapter included) Rechargeable NiMH batteries (included) Safety OVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per IEC1010-1 refers to the l
3 Specifications and Environmental Conditions Warranty This warranty extends only to the original purchaser and shall not apply to any product which, in Hart’s sole opinion, has been subject to misuse, alteration, abuse or abnormal conditions of operation or handling. Software is warranted to operate in accordance with its programmed instructions on appropriate Hart products. It is not warranted to be error free.
4 Quick Start Unpacking 4 Quick Start This section briefly explains the basics of setting up and operating your thermometer readout. 4.1 Unpacking Carefully unpack the 1522 and accessories and inspect them to make sure all components are present and in satisfactory condition.
1522 Handheld Thermometer Readout User’s Guide 4.4 Connect the Probe The PRT or thermistor probe connects to the top of the 1522 using Hart’s unique INFO-CON probe connector. The probe connector is inserted into the top of the instrument with the ridged to the back and fits snugly and locked into place when it is fully inserted. The INFO-CON probe connector includes a memory device that stores the unique characteristics of the probe, allowing the 1522 to measure temperature accurately.
4 Quick Start Measure Temperature want to measure the temperature. DO NOT force the probe or otherwise allow it to be bent, stressed, or overheated. It can be easily damaged if misused. For further suggestions on handling the probe and using the 1522 and probe to measure temperature accurately, see Section 6.5. For information on the various modes of operation of the 1522 see Section 7.
5 Parts and Controls Front View 5 Parts and Controls The functions of the various features of the 1522 are described below. 5.1 Front View The front of the 1522 features the LCD display and control buttons.
1522 Handheld Thermometer Readout User’s Guide Display-The display shows the current temperature (or resistance) measurement on the large numeric upper portion of the display. It can also show a variety of information on the smaller alphanumeric lower portion such as minimum, maximum, delta(x), and other instrument settings. Power and Backlight button-This button turns the instrument on or off. If the power is on, pressing the button for three seconds toggles the backlight on or off (see Section 6.3).
5 Parts and Controls Top and Side View 5.2 Top and Side View Probe Connector Top View Side View Serial Port Infrared Window DC Power Input Stand Figure 2 Top and Side View The top and side of the 1522 feature the probe connector, DC power input, serial port, and infrared window. Probe Connector - At the top of the thermometer readout is the opening where the probe connector is inserted. The probe must be connected using an INFO-CON probe connector to measure temperature (see Section 6.6).
1522 Handheld Thermometer Readout User’s Guide 5.3 Back View See Figure 5 on page 25. Stand - The stand at the back of the 1522 can be flipped down to prop up the instrument for better viewing. Battery Compartment - Behind the stand is the compartment that contains the battery pack. The battery pack can be accessed if necessary by opening the battery cover with a small Philips screwdriver (see Section 6.1).
5 Parts and Controls Accessories 5.5 Accessories The 1522's accessories and their features are described here. AC Adapter - The AC adapter recharges the internal battery pack and may also be used to supply power to operate the 1522 while the battery is being charged (see Section 6.2). Serial Cable - The serial cable is used to connect a computer or a printer to the 1522 through its serial port (see Section 8).
1522 Handheld Thermometer Readout User’s Guide Ordering Information Model Type Range Size Cal Uncertainty and Repeatability† Typical Drift† (1 year) 5613 Pt-100 Ohm, 4-wire –200 to 300°C 3/16” x 6” (4.76 x 152 mm) ±0.025°C ±0.01°C 5612 Pt-100 Ohm, 4-wire –200 to 450°C 3/16” x 9” (4.76 x 229 mm) ±0.025°C ±0.01°C 5627–6 Pt-100 Ohm, 4-wire –200 to 300°C 3/16” x 6” (4.76 x 152 mm) ±0.035°C ±0.13°C 5627–9 Pt-100 Ohm, 4-wire –200 to 450°C 3/16” x 9” (4.76 x 229 mm) ±0.035°C ±0.
5 Parts and Controls Accessories computer and written to a file quickly. These items must be purchased separately. Figure 4 Infrared Dongle LogWare Software - The LogWare software are data acquisition software packages that can be used with your thermometer to collect and graph data. The software also allows the user to download data logged from the instrument's memory to a computer and access to some of the instrument's features.
6 General Operation Battery 6 General Operation This section explains the details of the operation of the 1522 with its components and accessories. 6.1 Battery The 1522 has a built-in nickel-metal-hydride battery pack that can power the instrument for about 18 hours before needing to be recharged. The battery discharges much more quickly if the display backlight is used. The battery charge remaining or the message “External Power” is shown on the display when the instrument is switched on.
1522 Handheld Thermometer Readout User’s Guide tery automatically when it’s fully charged. It normally takes about four hours to fully charge the battery. The instrument can be operated while the battery is being charged. CAUTION: DO NOT leave the AC adapter plugged in for more than 24 consecutive hours or, the battery life could be degraded. The battery pack can be used for a minimum of 500 charge-discharge cycles before needing to be replaced.
6 General Operation Power Button adapter supplied by Hart Scientific. The DC power source plugs into the DC power input on the right side of the 1522. – + Figure 6 12V DC Power Source Polarity WARNING: The AC adapter contains high voltage circuits that could present danger of electric shock or fire if exposed. If the AC adapter is damaged in any way or becomes hot, discontinue its use immediately, disconnect it from any AC supply, and have it replaced.
1522 Handheld Thermometer Readout User’s Guide second. The display unit associated with the measurement is shown in smaller type to the right of the measurement. The possible display units are degrees Celsius (C), resistance in ohms (Ω), degrees Fahrenheit (F), Kelvin (K), and degrees Rankine (R). The display units can be easily changed accessing the Units mode (see Section 7.6). The lower part of the display has various functions depending on the selected mode. It has smaller alphanumeric characters.
6 General Operation INFO-CON Connector Temperature is generally sensed at the tip of the probe. To get an accurate temperature measurement the probe sheath should be well immersed, with adequate depth and fit, into the medium to be measured. CAUTION: Probes are fragile devices that can be easily damaged by mechanical shock, overheating, and absorption of moisture or fluids in the wires or hub. Damage may not be visibly apparent but nevertheless can cause drift, instability, and loss of accuracy.
1522 Handheld Thermometer Readout User’s Guide C1 and P1 terminals and the other single wire to the C2 and P2 terminals (which are shorted together).
7 Display Functions 7 Display Functions The insturment operates in any of several modes which determine what information is visible in the lower alphanumeric portion of the display. The MODE button sequences through the menu functions. This button can be pressed repeatedly until a desired mode is set. The various modes are listed below in the order they appear. Also refer to Figure 8.
1522 Handheld Thermometer Readout User’s Guide Each of these operating modes is described in the sections that follow. Blank Mode MODE button Delta(x) Mode Min/Max Mode MODE button MODE Demand Logging MODE Set Units button MODE Auto Logging MODE button button Set Rate button MODE button Set Resolution MODE button any mode MODE button (3 seconds) Cal Mode Figure 8 Operating Modes Flowchart 7.1 Blank Mode This mode is identified by “Blank” that temporarily appears on the display.
7 Display Functions Min/Max Mode In this mode nothing appears on the alphanumeric portion of the display. Use this mode if you are only interested in the latest measurements and want to simplify the appearance of the display. The message “Prb cal expired”, “Mtr cal expired”, “Recharge Needed”, or “Probe is locked” may be displayed. 7.2 Min/Max Mode This mode is identified by “Min/Max” that temporarily appears on the display.
1522 Handheld Thermometer Readout User’s Guide The labels can be pre-loaded using the Windows® HyperTerminal or other serial communications program and the command LBnn[=nnnnnnnn] as described in Section 8.2.1. The labels can also be pre-loaded using the serial port or the 2374 IR dongle with the 9934 LogWare or 9935 LogWare II software available by calling an Authorized Service Center (see Section 1.3 on page 4). 7.3.
7 Display Functions Auto Logging 7.4.1 Clear Autolog? This function clears the memory of all autologged data. Once the 1522 has logged 10,000 readings, further automatic logging is prevented until the memory has been cleared. Pressing the CLR button cancels the “Clr Autolog?” function and advances to the next function. Pressing the ENT button also advances to the next function. 7.4.2 Log Rate This function configures the rate at which data is stored into the memory of the 1522.
1522 Handheld Thermometer Readout User’s Guide Press the ENT button to stop autologging and to advance to the next function. 7.4.5 Dump Data? This function allows the user to download the autologged data using the serial port or print the downloaded dats to a serial printer. To download using the serial port, see Section 8 of this guide before selecting “Yes” when prompted by Dump Data. The autologged data can also be downloaded using the 2374 IR dongle with the 9934 LogWare or 9935 LogWare II software.
7 Display Functions Rate button stores the selection. If the MODE button or CLR button is pressed without pressing ENT the unit remains unchanged. Once the unit is selected, subsequent measurements will appear in that unit. After the Min/Max and Delta(x) modes are initiated, their values are automatically converted when changing units between °C, K, °F, or R. Changing units from Ω to any temperature unit or visa versa, reinitializes the Min/Max and Delta(x) modes.
1522 Handheld Thermometer Readout User’s Guide When editing any parameter, be sure to press the ENT button through the entire line of alphanumeric characters to ensure that the edits are stored. Pressing any button other than the ENT button advances to the next function without storing the new value.
7 Display Functions CAL MODE b4 [ITS-90 only] - Set the b4 or b5 probe coefficient R(0) [CVD only] - Set the R0 probe coefficient Alpha [CVD only] - Set the alpha probe coefficient Delta [CVD only] - Set the delta probe coefficient Beta [CVD only] - Set the beta probe coefficient b0 [Therm only] - Set the b0 probe coefficient b1 [Therm only] - Set the b1 probe coefficient b2 [Therm only] - Set the b2 probe coefficient b3 [Therm only] - Set the b3 probe coefficient Probe Wires - Set the number of wires of t
1522 Handheld Thermometer Readout User’s Guide pressed, the message “Invalid Passcode” is displayed and the instrument is returned to the display mode that follows the function that was active when the CAL Mode was entered. Each individual instrument has its own unique passcode. The passcode number is given on a notice provided with this instrument. The equipment manager is responsible for keeping the passcode number stored in a proper location and ensuring that it is not lost or forgotten.
7 Display Functions CAL MODE 7.9.8 Prb Type This function specifies the type of probe and its characterization. It allows the instrument to use the appropriate algorithm to calculate temperature from the measured resistance of the probe. The functions that follow the probe conversion function for setting probe characterization coefficients depend on the selected probe type. The table below lists the probe types and the corresponding coefficients.
1522 Handheld Thermometer Readout User’s Guide Coefficients Certificate Value R(.01) Rtpw a a5, a6, a7, a8, a9, a10, or a11 b b5, b6, b7, b8 or b9 c c6 or c7 d d a4 a4 or a5 b4 b4 or b5 Consider the following examples. Example 1: A PRT was calibrated to ITS-90 and its calibration certificate states values for coefficients R(273.16K), a4, b4, a8, and b8. Set the instrument's coefficients to the certificate values as follows. Coefficients Certificate Value R(.01) R(273.
7 Display Functions CAL MODE 7.9.10 Coefficients Certificate Value R(.01) R(273.16K) a a5 b b5 c 0.0 d 0.0 a4 a5 b4 b5 IEC751 The IEC751 probe type is for standard PRTs (RTDs) conforming to the IEC751 or DIN-43760 standards. This type of probe is generally low cost and has a wide operating range (–180°C to 420°C or higher), but has limited accuracy (0.15°C to 4°C). There are no user programmable coefficients associated with this probe type.
1522 Handheld Thermometer Readout User’s Guide 7.9.13 THERM The THERM type is for thermistors that have unique calibration coefficients or do not match the YSI-400 specification. This type of probe generally has moderate cost, a limited operating range (–40°C to 150°C), excellent accuracy (0.005°C to 0.01°C) and excellent resolution (0.002°C).
7 Display Functions CAL MODE measurement error due to the resistance of the wires. With four wires the instrument can completely cancel the error. The internal measurement circuit is configured differently depending on the number of wires. Note: The instrument tries to calculate a measurement even if the wire settings are incorrect. Therefore, the Probe Wires setting must match the actual number of wires or loss of accuracy will result (see Section 6.6).
1522 Handheld Thermometer Readout User’s Guide each date segment and the ENT button to move to the next date segment on the right. Press ENT when the date is correctly entered. Press CLR to move to the next function without changing the date. 7.9.19 MDue This function shows the date the instrument is due for calibration and allows it to be set.
8 Communications Interface RS-232 Connection 8 Communications Interface Remote communications allows an external device, such as a computer, to communicate with the instrument to obtain measurement data and control its operation. Communication is accomplished with various commands issued to the instrument through the RS-232 serial port. 8.1 RS-232 Connection The three-conductor jack for the serial port is located on the top of the instrument near the probe connector.
1522 Handheld Thermometer Readout User’s Guide The protocol for serial communications is 8 data bits, 1 stop bit, and no parity. Use no flow control. The baud rate is fixed at 2400, the linefeed to ON (all carriage returns are followed by a linefeed (ASCII decimal 10)), and the duplex to HALF disabling echo. The serial port can be used to transmit measurements to a computer or printer. It can also be used to change settings of the instrument from a computer or interface with software.
8 Communications Interface Communication Command List Description Command Example Set autolog mode on/off . alog=[ON/OFF] alog=ON Response Format Response Example Range ON or OFF Note: Exit Autolog menu to use this command. After alog =ON is sent, the buttons are disabled until the command alog=OFF is sent. Clear autolog memory aclr aclr Initiate download of autologged daut data. daut Note: Read Section 11.2 on downloading autologged data before attempting to use this command.
1522 Handheld Thermometer Readout User’s Guide Description Command Example Response Format Response Example Range n Numeric data supplied by user 9 Numeric data returned to user x Character data returned to user 8.2.2 Calibration Commands The following group of commands directly or indirectly affect the accuracy of the instrument. These commands should only be used by qualified, authorized personnel.
8 Communications Interface Communication Command List Description Command Example Response Format Response Example Read probe wires w[ires] wi wi: 9 wi: 4 Set probe wires w[ires]=2/3/4 wi=4 Read probe calibration date pc[al] pcal Set probe calibration date pc[al]=yyyy-mm-dd pc=1999-03-28 Read probe due date pd[ue] pdue Set probe due date pd[ue]=yyyy-mm-dd pd=1999-03-28 Read filter fi[lter] fi Set filter fi[lter]=n fi=0 Read low range calibration *c1 *c1 Set low range calib
9 Calibration Required Equipment 9 Calibration The 1522 should be calibrated at regular intervals to ensure that it continues to measure with proper accuracy. Calibration should only be done by qualified, authorized personnel. 9.1 Required Equipment The following items are required to test and calibrate the 1522: • 0Ω four-wire resistor (short) • 25Ω four-wire resistor, accurate within 20 ppm (±0.0005Ω) • 100Ω four-wire resistor, accurate within 20 ppm (±0.
1522 Handheld Thermometer Readout User’s Guide 4. Verify the accuracy at 0Ω, 4kΩ, 10 kΩ, 40 kΩ, 100 kΩ, and 500 kΩ. 5. Set the meter calibration date to the present date (see Section 7.9.18). 6. Set the meter due date to a user defined date (see Section 7.9.19).
10 Maintenance 10 Maintenance • This instrument has been designed with the utmost care. Ease of operation and simplicity of maintenance have been a central theme in the product development. With proper care the instrument should require very little maintenance. Avoid operating the instrument in oily, wet, dirty, or dusty environments. • If the outside of the instrument becomes soiled, it may be wiped clean with a damp cloth and mild detergent.
11 Troubleshooting An Error Message Is Displayed 11 Troubleshooting In case you run into difficulty while operating the 1522, this section provides some suggestions that may help you solve the problem. Below are several situations that may arise followed by possible causes of the problem and suggested actions you might take. 11.1 An Error Message Is Displayed The following table lists possible error messages, their causes, and suggested actions.
1522 Handheld Thermometer Readout User’s Guide 11.2 Problem Solution While attempting to measure resistance the display shows an incorrect value. Poor or incorrect connection of the probe. A common mistake is to connect the wires of the probe to the wrong terminals. Check the wiring carefully (see Figure 7). Open, shorted, or damaged sensor or lead wires. Check the resistance across the sensor using a handheld DMM. Also check the resistance between common pairs of leads.
11 Troubleshooting Placement of Infrared Dongle for IR Data Transfer a) Set up the terminal program to use the correct COM port and operate at 2400 baud, 8 data bits, 1 stop bit, no parity, no flow control. b) If you want to save the downloaded data to a file, configure your terminal program to capture the incoming text and save it to a text file. Refer to your terminal program's documentation for details on how to do this. 3.
1522 Handheld Thermometer Readout User’s Guide sion. For best results, place the IR dongle and the IR window on the 1522 at an angle of 0° and within 0.5 meters. Figure 10 Infrared Dongle Position 11.4 CE Comments 11.4.1 EMC Directive Hart Scientific’s equipment has been tested to meet the European Electromagnetic Compatibility Directive (EMC Directive, 89/336/EEC). The Declaration of Conformity for your instrument lists the specific standards to which the unit was tested.
11 Troubleshooting CE Comments Electric Fast Transit (EFT, Burst, IEC 61000-4-4). If the instrument is subjected to EFT conditions at 2kV, the instrument may require the user to cycle the power to return to normal operation. 11.4.1.2 Emission Testing The instrument fulfills the limit requirements for Class A equipment but does not fulfill the limit requirements for Class B equipment. The instrument was not designed to be used in domestic establishments. 11.4.
