34
Perform step 1 stated earlier, then press scroll key until the display shows . Press scroll key
for at least 3 seconds. The display will blink a moment and a new value is obtained. Otherwise , if the
display didn't blink or if the obtained value is equal to -199.9 or 199.9, then the calibration fails.
This setup is performed in a high temperature chamber, hence it is recommended to use a computer
to perform the procedures.
*
Final step
Step 8. Set the LOCK value to your desired function.
*
Input modification and recalibration procedures for a linear voltage or a linear current input:
1. Remove R60(3.3K) and install two 1/4 W resistors RA and RB on the control board with the recommended values
specified in the following table.
The low temperature coefficient resistors should be used for RA and RB.
2. Perform Step 1 and Step 2 to calibrate the linear input zero.
3. Perform Step 3 but send a span signal to the input terminals instead of 60mV. The span signal is 1V for
0~1V input, 5V for 0~5V or 1~5V input, 10V for 0~10V input and 20mA for 0~20mA or 4~20mA input.
Input Function
RA
RB
R60
T/C, RTD, 0~60mV
61.9K
3.92K
3.3K
0 ~ 1 V
0 ~ 5V, 1 ~ 5V
0 ~ 10 V
0~20mA, 4~20mA
324K
649K
39
W
39
W
3.92K
3.92K
3.01
W
3.01
W
X
X
X
X
X
X
