Serinus 44 User Manual 3.0
5.9.2 Dual Pressurised Calibration Option
Set-Up of Dual Calibration Option
Figure 49 – Dual High Pressure Calibration Option
When using the dual pressurised calibration option, a high pressure zero cylinder should be
connected to the Pressure in Port and a high pressure span cylinder connected to the Calibration
Port.
Equipment Required
Calibrated Flow Meter
Gas Cylinder of Zero air
Gas Cylinder of NO
Procedure
1. Ensure the gas cylinder is fitted with an appropriate gas regulator with a shut off valve.
2. Connect a ¼” line of stainless steel tubing between the appropriate gas cylinders and the
instrument’s Pressure in Port and Calibration Port.
3. Open the cylinder main valve and adjust the regulator to 15 psig.
4. Open the regulator’s shutoff valve and test for leaks:
Note: This connection may need to be retightened during this operation.
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