Operation; Measuring Temperature; Calibrating Thermocouple Devices; Direct Mv Calibration And Measurement - Extech Instruments 433201 User Manual

Operation

MEASURING TEMPERATURE

1. Press the red power switch to the ON position.
2. Select the "MEASURE" mode on the side panel slide switch
3. Select the thermocouple type of your measuring probe via the faceplate "TYPE"
button. An LED will light above the T/C type selected in the display. Each time
the "TYPE" button is pressed the indicator will advance one type.
°
4. Select C or
5. Insert the thermocouple probe into the sub-miniature female connector on the
side panel. Be sure to check that it is inserted with the proper polarity and make
sure the proper type is selected in the display.
6. Read the temperature on the LED display.

CALIBRATING THERMOCOUPLE DEVICES

1. Press the red power switch to the "ON" position.
2. Select the "CALIBRATE" mode on the side panel slide switch.
3. Select the thermocouple type of the device to be calibrated via the faceplate
"TYPE" button. An LED will light above the T/C type selected in the display.
Each time the "TYPE" button is pressed the indicator will advance one type.
°
4. Select C or
5. Insert the calibration cable into the sub-miniature female connector on the side
panel. Be sure to check that it is inserted with the proper polarity and make sure
the proper type is selected in the display.
Note: For greater accuracy, especially if there is a difference between the internal
temperature of the calibrator and the device under calibration, we recommend that you use
a thermocouple cable rather than the copper cable that is supplied with the calibrator. The
thermocouple cable must match the thermocouple type of the device under calibration.
6. Connect the other end of the cable to the device to be calibrated.
7. Allow the proper warm up time for the Calibrator and the Device to be calibrated.
At least 30 minutes is typically recommended.
8. Adjust to the desired output temperature using the up/down "COARSE"
adjustment buttons on the faceplate and the "FINE" adjustment knob on the side
panel. The output temperature will be displayed on the LED display. The
"COARSE" adjustment has 16 increments and will display "high" or "low" when
out of range.

DIRECT mV CALIBRATION and MEASUREMENT

For directly calibrating or measuring thermocouple devices in mV rather than in
temperature, press the "TYPE" button until the F or C in the LED display disappears (only
O
the " " remains). The LED display will now indicate in mV rather than temperature units.
°
F via the "C/F" button.
°
F via the "C/F" button.
3 433201 Ver. 1.5 11/03