• Calibration procedures
1. Press both scroll and down keys, then release to access the tool programs. Repeat until appears on
the displays.
2. Press and release the scroll key. The lower display will show a number with the prefix “t”.
3. Use the up and down keys to change the value of the lower display until it matches the ambient temperature in °F
as measured by the standard thermometer.
4. Press the scroll key for at least 3.2 seconds, then release. The upper display will blink for a moment and then show
the ambient temperature in °F.
5. Press and release the scroll key. The lower display will show a number with the prefix “A”, and the upper display will
show 0.00.
6. Press and hold down push-button switch SW1 from the diagram above. While holding down SW1, Press and hold
the scroll key for at least 3.2 seconds, then release. The upper display will now show 20.00. Release SW1.
7. Press and release the scroll key. The lower display will show a number with the prefix “d”. If the number is not 0.0,
use the up and down keys to set it to 0.0, then press the scroll key for at least 3.2 seconds, then release.
• Verify calibration accuracy
1. Repeat step 1 from the calibration procedures as described above.
2. Press and release the scroll key until an “A” code is shown in the display. The display will indicate process value
with respect to the 0–20mA input. Feed a standard signal to the correct mA input terminals and examine the
accuracy of the display.
3. Press and release the scroll key again until a “d” code is shown in the display. Now the display will indicate process
value with respect to the INPT type selected. Feed a standard signal to the appropriate input terminals and examine
the accuracy of the display.
4. Press the scroll and up keys, then release quickly. The display will indicate process value with respect to the
PT100/DIN input. Feed a standard signal to the PT100 input terminals and examine the accuracy of the display.
5. Press the scroll and up keys, then release quickly. The display will indicate process value with respect to the 0–10V
input. Feed a standard signal to the voltage input terminals and examine the accuracy of the display.
• Warm-up drift correction for thermocouple input. After completing the calibration procedures above, connect a
thermocouple to terminals 13 and 14 (observing polarity) and select the correct INPT for the thermocouple. Switch the
power on and leave it on for at least 30 minutes. If the controller does not measure the correct temperature for the
thermocouple, the following procedures may be used to correct the error.
1. Perform steps 1 and 2 from the calibration procedures.
2. Press and release the scroll key.
3. Press and release the scroll key again. Now the “d” code with zero value will show on the display.
4. Use the up and down keys to change the “d” code value until the upper display shows the correct temperature. The
“d” code is always shown in °C, regardless of the setting of the UNIT parameter.
5. Press the scroll key for at least 3.2 seconds, then release. The upper display will blink for a moment, then show an
accurate temperature. If the accuracy of the controller is still unsatisfactory, replace the controller.
23
- +
40mV
-
+
20mA
19
18
COM+
mA-
V-
12
PTA
11
TC-
17
10V
SW1
200 ohm
