ALTEK PROCESS CALIBRATOR TechChek Model 820

1 DATA SHEET 820 ONE VERSATILE TOOL- MULTIPLE FUNCTIONSC alibrator - Milliamps, Voltage, RTD, T/C & FrequencyMultimeter- Measure AC/DC Volts, Ohms & Continuity TYPICAL ACCURACY TO to mA, V or Hz, 1 C, & Ohms DISPLAYS PROCESS SIGNALS C, F, mA, % 4 to 20, V, mV, Ohms, Hz & CPM DIGITAL ACCURACY WITH ANALOG SIMPLICITYS peed sensitive digital pot for fast output adjustment EASY TO LEARN - EASY TO USES imple, menuless operation USER SETTABLE QUIK-CHEK SWITCHSet any Span and Zero MINIMUM & MAXIMUM TRACKINGI nstantly recall the highest & lowest measurements STANDARD ALKALINE BATTERIESLong battery life with quick battery changes DESIGNED FOR SAFETY TO IEC 1010 Shielded banana jacks & test leads, Alligator Clips, Test Probes & Spade Lugs GENERAL INFORMATIONALTEKPROCESS CALIBRATORTechChek Model 820 Lighten your load by taking the TechChek to everysite.

2 It s like bringing a cartload of test equipment fromthe shop to the control room or the field. The TechChek820 sources & reads DC like a milliamp or voltagecalibrator, simulates and measures T/Cs & RTDs like atemperature CALIBRATOR and generates and countsfrequency & Counts-Per-Minute like a frequency calibra-tor. Troubleshooting? It checks continuity and measuresAC line voltage like a multimeter!The TechChek 820 is easy to use. Select a function,choose a range, and turn the knob for the precise outputyou need.

3 Plus, you can store three output values perrange for instant recall with the QUIK-CHEK CALIBRATIONUse at every point in your 4 to 20 mA loop. You canSource & Read to mA, Simulate a Two-WireTransmitter or the use the TechChek 820 to simultane-ously Power & Measure your Two-Wire CALIBRATIONC alibrate all your DC millivolt and voltage instrumen-tation. Source from to mV and to up to mV, V and CALIBRATIONS ource and read directly in C and F for T/C typesJ, K, T & E with 1 resolution. Cold junction compen-sation automatically adjusts for ambient CALIBRATIONB uilt-in Platinum 100 Ohm DIN/IEC 751 tabledisplays in C or F.

4 No more decade box and hard-to-read tables. Also reads and sources in CALIBRATIONG enerate Zero Crossing square waves from 1 to1000 Hz, to kHz and from 1 to 1000 CPM(Counts-Per-Minute). Also measures as a AC VOLTAGEC heck your line voltage or mains from to AC. Great for troubleshooting power CONTINUITYL ocate pairs of wire, open connections and shortswith the built-in beeper.!!145235V MAXINPUT45V MAXINPUT!300 VMAXINPUT45 VMAXINPUT!T/CMilliamp Output SignalControllerTransmitterP/IDCSREDBLAC KTYPICAL HOOKUPS!

5 !145235V MAXINPUT45V MAXINPUT!300 VMAXINPUT45 VMAXINPUT!T/CMilliamp Receiver InputControllerTransmitterComputerLogger I/PDCSREDBLACK+IN-REF +OUT-!!145235V MAXINPUT45V MAXINPUT!300 VMAXINPUT45 VMAXINPUT!T/CREDBLACKT ransmitter InputSensorProcess SignalSimulated InputTypical2-WireTransmitterAC Voltage SignalMainsLine Voltage!!145235V MAXINPUT45V MAXINPUT!300 VMAXINPUT45 VMAXINPUT!T/CBLACKREDSOURCE mA, mVDC, VDC, Hz or CPMThe Model 820 TechChek sources a wide variety ofprocess control signals. You can store any three outputvalues and use the QUIK-CHEK switch to outputs are 4 to 20mA, 0 to 100% of 4 to 20mA, 1 to 5 Volts, 0 to 100 mV plus square waves in Hz orCPM.

6 READ mA, mVDC VDCRead VDC to , Hz or CPM to VpeakEasily measure PROCESS DC signals. Flip the QUIK-CHEK switch to recall the mininum and the Model 820 in series with the loop to measure 4to 20 mA or across receiver inputs to measure the 1 to 5volt signal. Read flow meter signals in Hz or to VACRead VDC to , Hz or CPM to 250 VpeakCheck AC power (mains) to your panels without avoltmeter. Also measure power supplies, loop voltages &high amplitude frequency & MEASURE 2-WIRE TRANSMITTERSUse the Model 820 TechChek to simultaneously supplypower to a 2-Wire transmitter while displaying the 4 to 20mA output of the Model 820 supplies a nominal 25 VDC andsupports loads up to 1200 Ohms.

7 !!145235V MAXINPUT45V MAXINPUT!300 VMAXINPUT45 VMAXINPUT!T/CREDBLACKCHECK CONTINUITYA tone sounds when the resistance between the termi-nals is less than approximately 100 is useful to find open connections, shorts orto identify wire 2-WIRE TRANSMITTERSS imulate a 2-Wire Transmitter output from to or from to of 4 to 20 mA. Operates inloops with power supply voltages from 3 to 45 the Model 820 for any transmitter to check allthe other devices in the loop. Or use to temporarily replace!!145235V MAXINPUT45V MAXINPUT!

8 300 VMAXINPUT45 VMAXINPUT!T/CREDBLACKR eceiver InputOhms or 2-Wire RTDC ontrollerTransmitterComputerSOURCE or READ Ohms and 2-Wire RTDsSimulate resistance to 400 Ohms or 2-Wire Platinum100 Ohm RTDs. Read Pt 100 Ohm RTDs and resistanceto 1000 Ohms.!!145235V MAXINPUT45V MAXINPUT!300 VMAXINPUT45 VMAXINPUT!T/C+IN-REF +OUT-REDBLACKP ower Supply2 to 45 VDCR eceiver(Powers external2-Wire Transmitter)ToSensorTypical2-WireTransmi tter(Disconnected)Dial in any temperature tosimulate the output of a TypeJ, K, T or E three values on theQUIK-CHEK switch to instant-ly output any temperature in C or junction compensationautomaticly adjusts the milli-volt output as the ambienttemperature changes.

9 !!145235V MAXINPUT45V MAXINPUT!300 VMAXINPUT45 VMAXINPUT!T/CREDBLACKBLACK3 TYPICAL HOOKUPS!!145235V MAXINPUT45V MAXINPUT!300 VMAXINPUT45 VMAXINPUT!T/CREDBLACKBLACKI nstrument withRTD InputControllerTemperature TransmitterTemperature IndicatorTemperature Trip or AlarmSIMULATE AN RTD SENSORS imulate a Platinum 100 Ohm (385) RTD sensor direct-ly in C or F. Three test leads and spade lugs are includ-ed with the 820 for easy holding a bulky decade box while readingRTD vs. resistance 3-WIRE RTDsMeasure any Platinum 100 Ohm (385) RTD sensors in C or F.

10 Three wire hookup lets you read typical processcontrol sensors including ones with long cable and maximum temperatures let you tracktemperatures to find control A THERMOCOUPLEC onnect any J, K, T or Ethermocouple and read directlyin C or the QUIK-CHEK switchto display the minimum andmaximum measured tempera-tures. Monitor an independentsensor to tune the deadbandadjustment of A THERMOCOUPLE!!T/C145235V MAXINPUT45V MAXINPUT!300 VMAXINPUT45 VMAXINPUT!+-+-Instrument withThermocouple InputControllerTemperature IndicatorTemperature Trip or AlarmTemperature TransmitterADDITIONAL INFORMATIONTHREE YEAR WARRANTYOur equipment is guaranteed against defective material and workmanship(excluding batteries) for a period of three years from date of under guarantee can be made by returning the equipment prepaidto our factory.