Ametek Thermox WDG-1200 Insitu, User Manual

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Installation and Start-up
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3-9
Calibration setup
Figures 3-7a and 3-7b show the location of the calibration gas inlet port on both
units. When calibrating the system, connect your calibration gases to this inlet
port.
Figure 3-7a.
Calibration Gas port
WdG-1200 Insitu.
Figure 3-7b.
Calibration Gas port
WdG-1210 Insitu.
Calibration Gas Port
required calibration gases and tubing
• Use calibration gases at 10 psig (0.7 bar).
• Shorter probes: use 3 scfh (1.4 l/min.)
• 6 and 9-foot probes: use 6 scfh (2.8 l/min.)
The span gas oxygen concentration must be higher than the zero gas by a factor
of 10.
• Span gas - analyzer air (20.9%) or from 10% to 25% O
2
, balance N
2
.
• Zero gas - from .1 to 10% O
2
, balance N
2
(1% is recommended).
Always use 1/4” OD Teflon or stainless steel tubing that is free of oil
and dirt.
Calibration inlet
Connect your calibration gases directly to the calibration gas inlet port on the
Insitu probe (see Figure 3-7). Cap this port when not performing calibrations.
NOTE
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