Serinus 44 User Manual 3.0
2.3 Instrument Set-up
After installing the instrument the following procedures should be followed to ready the instrument
for monitoring:
Figure 7 – Instrument Back Panel
2.3.1 Pneumatic Connections
The Serinus 44 has six pneumatic ports on the back panel of the instrument: the Sample Port, the
Calibration Port, the Exhaust Port, the Auxiliary In port, the Auxiliary Out Port and the Background Air
Port. All tubing and fittings used should follow the instructions below:
Must be made of Teflon® FEP material, Kynar®, stainless steel, glass or any other suitably inert
material.
Sample line should be no more than two meters in length with ⅛ inch ID and ¼ inch OD.
Sample inlet pressure should not exceed 5 kPa above ambient pressure.
Tubing must be cut squarely and any burrs removed.
Remove the inlet port nut and insert the tubing through the back of the nut with the tube
extending one inch through the front.
Place the tubing into the port until it hits the tube stop inside fitting.
Place the nut back onto the fitting and tighten clockwise until finger tight.
Nuts should be re-tightened when instrument reaches operating temperature.
Sample Port
The sample port must be connected to an ambient source of sample air. When using a sample
manifold the Serinus requires at least 1.5 slpm delivered to the sample manifold (1 slpm for
measurement plus approximately 50% excess).
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