Optional Extras Serinus 51 User manual 1.0
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Figure 33 Single high pressure calibration option
8.3.2 Dual pressurized calibration option
The dual internal pressurized calibration valves are already installed within the
analyzer (Figure 34) as a zero and span calibration source, thus no other connections
need to be made.
Operation of dual calibration option
When using the pressurized 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 analyzer.
1. Ensure gas cylinder is fitted with an appropriate gas regulator with shut off
valve.
2. Connect a line of 1/8” stainless steel tubing between the appropriate gas
cylinder and the analyzer inlet port.
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 shutoff valve and leak test.
5. Temporarily place a flow meter on the “Auxiliary Out” port (used as a vent).
6. Change “Set Cal Port” to External (Main Menu → Calibration Menu) then
select either span or zero under the “Cal Mode” option depending on which
calibration check is being performed. This will initiate the pressurized
calibration.
7. Open the cylinder shutoff valve; adjust the regulator pressure until the flow on
the vent line (Calibration port) is between 0.5 and 1 lpm.
Note: Do not exceed 2 bar of pressure,
if this occurs a leak may exist
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