Simtronics GD1 MK3 Operating Manual page 37

# Step description
Clean the lenses on the TX and RX as described in
1
section 5.2.
Fill the Test Cell with CO
section 4.2, but with CO
2
Recommended CO
000 – 100 000 ppm (1 %vol - 10 %vol).
Position the Test Cell in front of the receiver (RX)
3
as indicated in the figure.
Verify the response in the GD1 spectrum.
The output should change according to the length
4
of the Test Cell multiplied with the gas
concentration. Below is an example with 40000
ppm CO filled into the Test Cell by breath.
2
GD1
as described in the
2
instead of H S.
2 2
test gas concentration is 10
2
Page 37 of 76
Illustration / response
Expected output value (ppm CO
�� ∗ ��. ���� + ��
�������� ������
��������_������������
Where C and C is the CO
cell air
concentration in respectively the
Test Cell and air.
850-816926-EN R06
):
2
∗ ��������_������������
2