Simtronics GD1 MK3, Operating Manual

Page: 38 / 76

GD1 Page 38 of 76 850-816926-EN R06
The above spectrum is found in GD1 Web interface. Spectrum to the left showing
472 ppm of CO
2
in the air. To the right a spectrum showing 1 191 ppm as a result of
introducing the Test Cell filled with 40 000 ppm CO
2
.The value can be verified by using the
formula in step 4.
Note! Depending on the precision of the gas mix inside the Test Cell, do not expect to see an
exact 1:1 response compared to the test gas concentration.
5
Run loop testing in the Web interface "I/O
verification" screen.
Recommend to use 60 sec test time.
Enter test value. For example 12 mA is 50% of full
scale.
6
After the GD1 goes into "IO Verify" mode, verify
that the analogue output matches the test value.
Functional test with CO
2
finished!