Process Calibration Tools Catalog EN

TESTDCPWR ++– – TESTDCPWR ++– – C-2 C-1 S-3 S-2 S-4 S-1 TC transmitter calibration connection ©2015 Fluke Corporation. Specifications subject to change without notice. 07/2015 6005865a-en RTD transmitter calibration connection TESTDCPWR ++– – TESTDCPWR ++– – C-2 C-1 S-3 S-2 S-4 S-1 TC transmitter calibration connection ©2015 Fluke Corporation. Specifications subject to change without notice. 07/2015 6005865a-en RTD transmitter calibration connection 51 • When simulating a thermo- couple signal from a simu- lator, always use the correct thermocouple wire for the test, either the exact same TC wire type or a compati- ble extension wire type. • When simulating tempera- ture using a calibrator with active reference junction compensation, remember the calibrator actively compensates for tempera- ture changes. Changes in ambient temperature should be compensated for automatically. • When testing 3-wire RTD circuits make sure to con- nect all three wires from the sourcing RTD simulator to the device being tested. Shorting out the compensa- tion wire at the transmitter defeats the lead compensa- tion circuit and introduces measurement errors. Additional resources For more in depth information about this application check out these videos and application notes from Fluke. Testing, troubleshooting, calibrating process temperature devices webinar Temperature calibration application note Fluke temperature calibrators deliver high accuracy, speed, and convenience TECH TIPS Connect the calibrator to the device input as shown in figure B. Connect the calibrator output with the right combination to match the device configuration (2, 3 or 4-wire). Use the test procedure at left for thermocouple testing, starting at step 3. Disconnect the process measurement sensor and connect the test connection wires in its place (Figure A). Connect the mini-connector from the test wires to the TC source connection of the cali- brator. Connect a DMM or other mea- surement tool to the tested device’s mA output. Verify the devices range or span. Apply the 0% value with the simulator and verifywith the DMM that the output mA value or voltage is as expected. Repeat the test, applying the 50% and 100% temperature signals. If the measured output of the device is within limits, the test is complete. If not, adjust the device at zero (offset, 0%) and span (gain, 100%). Repeat steps 4 and 5 and verify for a correct response. To use a thermocouple simulator to test a device with a thermocouple input: STEP 1 STEP 1 STEP 2 STEP 3 STEP 2 STEP 3 STEP 4 STEP 5 STEP 6 STEP 7 To perform the test: To use an RTD simulator to test a device with an RTD input: 51 Temperature Applications