Bacharach PCA 400 - Sensor Calibration; CO LOW Sensor Calibration

0024-9551 Revision 1
53
PCA
®
400 User Manual
IMPORTANT: The CO
LOW
sensor also measures H
2
for the purpose of compensating
the CO reading for the presence of H
2
in the gas sample. This procedure rst spans
the CO
LOW
sensor and, optionally, spans the H
2
part of the sensor to know gas levels.
Fig. 5-7: Gas Sensor Calibration Equipment
Leave Top
porT open
* Part of Calibration Kit (P/N: 0024-7059)
Regulator*
3
⁄16" I.D. Tubing*
Gas Cylinder
Gas Connector*
Materials / Equipment Required
Before manually calibrating the CO
LOW
sensor, obtain the following items:

 Calibration Kit (P/N: 0024-7059)

 Gas Cylinder (500 ppm CO in air, P/N: 0024-0492)

 Gas Cylinder (1,000 ppm CO and 1,000 ppm H
2
in Nitrogen, P/N: 0024-0794)
5.6.2 CO
LOW
Sensor Calibration