Teledyne Mixchek - Helium / Oxygen mixture analyzer - Manual (Page 26)

Operation MIXCHEK
Teledyne Analytical Instruments 26
instrument incorporates small gas passages inside the sample block. A
high gas flow rate will pressurize the sensor and will cause the oxygen
sensor to indicate an abnormally high value and the helium sensor to
indicate an incorrect gas concentration.
The analyzer display reading should become stable in less than a
minute. Most of the time required for the analyzer’s reading to stabilize
is caused by gas sampling propagation delays. This is the time required
for the gas sample to purge through the regulators, gas lines and fittings.
Depending on the sample system employed, it may require several
minutes for the gas sample to reach the analyzer and become stable.
Figure 3-1: Typical Setup Flow Diagram
Note: The wall-mounted version requires the tubing and a 1/8”
NPT male barb fitting.