Calibration | 5-9
c. Click Apply to save the changes.
d. To test the accuracy of the output channels, click Mid-Scale to turn
On this function. Verify the current outputs are 12 mA, ± 0.03 mA.
e. Click Zero Cal to change its status to Off.
2. Measure the Span (full-scale) signal of each output:
a. Click Span Cal to change its status to On. The status of Normal,
Mid-Scale, and Zero Cal should be Off.
b. Connect a current meter to Pins 1 and 2 (at J109 on the Customer
I/O board) and measure the current of Output 1. Under Current
Outputs, enter the value next to Span (mA), under the first column
(Output 1).
Repeat this step for Output 2 (Pins 3 and 4), Output 3 (Pins 5 and 6),
and Output 4 (Pins 7 and 8), recording the value for each output in
the corresponding field.
c. Click Apply to save the changes.
d. To test the accuracy of the output channels, click Mid-Scale to turn
On this function. Verify the current outputs are 12 mA, ± 0.03 mA.
e. Click the Span Cal button to change its status to Off.
3. Click Normal to change its status to On, which activates the outputs.
The outputs will now track the concentration readings.
4. Click OK to return to the Setup tab, then click Save CFG to EEPROM
to permanently save the changes to the analyzer’s EEPROM.
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