Ecotech Acoem Serinus 30 - Single Pressurised Calibration Option; Figure 121 - Single High Pressure Calibration Option

Serinus® 30 User Manual 3.3
Page 134
5.9.1 Single Pressurised Calibration Option
Set-Up of Single Calibration Option
Figure 121 – Single High Pressure Calibration Option
When using the pressurised calibration option, either a high pressure zero or span cylinder (depending
on the option ordered) should be connected to the Calibration Port.
Equipment Required
• Calibrated Flow Meter
• Gas Cylinder and Accessories
Procedure
1. Ensure the gas cylinder is fitted with an appropriate gas regulator with a shut off valve.
2. Connect a 1/4” line of stainless steel tubing between the gas cylinder and the instruments
Calibration Port.
Note: This connection may need to be retightened during this operation.
3. Open the cylinder main valve and adjust the regulator to 15 psig.
4. Open the regulator’s shutoff valve and test for leaks:
a. Pressurise the line.
b. Close the cylinder main valve.
c. If pressure drops by more than 2 PSI over 5 minutes, check the connections and retest.
d. Open cylinder main valve.
5. Temporarily place a flow meter on the Vent Port.