ENMET OMNI-4000 - Manual (Page 52)

ENMET Corporation OMNI-4000 S/N 6705 and above
46
3.5.3 Calibration of a Toxic Gas Channel
Equipment Required
‰ The calibration cover
‰ A calibration adapter for the type of gas to be calibrated:
ƒ For reactive gases, 8” Teflon lined tubing, cylinder regulator and reactive gases (ex. H2S, NH3, SO2, HC1 etc…)
ƒ For non-reactive gases, Tubing and cylinder regulator
‰ A cylinder of calibration gas with a known content and corresponding to the type of sensor to be calibrated
Preparing the OMNI-4000
• Attach the OMNI-4000 calibration cover. See Figure 3-8
• Connect the calibration gas cylinder to the calibration cover with a vinyl hose
• If the channel has not been selected refer to the "Selecting the Channel for Calibration" paragraph
Use:
Cylinder Regulator 02506-004 with 17 liter cylinder
Cylinder Regulator 02506-002 with 34 liter cylinder
(ex. H2S, NH3, HCL etc.)
Cylinder Regulator 02506-005 with 103 liter cylinder
(ex. CO2 )
Calibration Arrangement for the Majority of Gasses
Humidifier
Used with BRH Sensor
Fill humidifier bowl 1/3 full with clean, tap water. The tube
should
NOT go under the water line. No bubbles should be
visible when gas is flowing
Cylinder regulator part number 03700-005.
Top View of Humidifier
From Regulator О
Н To Sensor
Note: In this application, the direction of gas flow is the
opposite of the indicator arrow on the humidifier
assembly.
Calibration Arrangement for BRH Gases
Figure 3-8: Calibration Gas Equipment Arrangement
Calibration Cover
Tubing – Teflon lined
Gas Cylinder
Regulator
Preset @ 0.5 lpm
Humidifier
Calibration Cover
Regulator
Gas Cylinder