ENMET Venturi Gas Sampler - Manual (Page 7)

Venturi Module ENMET Corporation
5
3.0 Calibration
See Figures 4 and 5.
1. Consult monitor or sensor/transmitter manual to determine how to make adjustments to the circuitry during calibration.
2. Connect the appropriate calibration gas cylinder to the flow demand calibration adapter. For all MOS sensors supplying
water to humidify gas is required. See Figure 4.
•
For Combustible Sensors: Connect the output of the flow demand regulator directly to the air input of the sample draw
module.
•
For MOS Sensors: Connect the output of the flow demand regulator to the humidifier. Connect the output of the
humidifier to the air input of the sample draw module.
Figure 4: Connect Gas to Venturi Module
Tubing
Flow Demand
Regulator
Gas Cylinder
Humidifier required
for all MOS Sensors
To air input To Regulator
Side View
Top View