Return to Normal Operation
1. Set Cal. Mode → Measure.
2. Remove the flow meter on the Calibration Port and connect the vent line to the port.
3. Reconnect the instrument fittings and return to the original set-up.
4. The instrument is now in normal operation mode.
Figure 49 – Single high pressure calibration option
5.7.2 Dual Pressurised Calibration Option
Operation of Dual Calibration Option
When using the pressurised calibration option a high pressure zero bottle should be connected to
the Auxiliary In Port and a high pressure span bottle connected to the Calibration Port on the back
of the analyser.
1. Ensure the gas cylinder is fitted with an appropriate gas regulator with shut off valve.
2. Connect a line of stainless steel tubing between the appropriate gas cylinder and the analyser’s
Ports (refer to Figure 50).
Note: This connection may need to be retightened during this operation.
3. Open the Main Valve and adjust the regulator to 15 psig or 1 bar.
4. Open the regulator shut off valve and test for leaks.
5. Temporarily place a flow meter on the Auxiliary Out Port (used as a span/zero gas vent during
this check).
6. Change Set Cal Port to External (Main Menu → Calibration Menu) then select zero under the Cal
Mode option which will initiate the pressurised zero calibration.
To Next Page
Loading...
