PerkinElmer Photovac MicroFID, User Manual

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MicroFID Software Manual
depend on your application. 500 ppm methane in air is
available from PerkinElmer. (Part No. MX396028)
Some applications may require calibration gas at more than
one concentration. When ordering calibration gas, specify
methane in hydrocarbon free air. Air should have not more
than 0.1 ppm total hydrocarbons (THC).
Method 21 protocol requires that commercial cylinders of
calibration gas be analyzed and certified to be /­ 2%
accuracy and a shelf life must be specified on the cylinder. At
the end of the shelf life, the cylinder must be replaced or re­
analyzed.
If you will be using a portable cylinder, specify a regulator
with a C­10, 5/8" ­ 18 UNF valve inlet and a 1/4” parallel,
compression fitting outlet. A regulator, matching this
specification, is included in the calibration kit.
If you will be using large tanks of gas, specify a single stage,
high purity regulator with a CGA 590 connection at the inlet.
The regulator should also have a 1/4” p arallel, compression
fitting outlet with which to connect the regulator to the gas bag
adapter. The delivery pressure must be adjustable to
approximately 40 psig (275 kPa).
3. Zero air. Occasionally, clean, ambient air is suitable for
calibration. If you are unsure about the quality of ambient air,
you can connect a charcoal filter (Part No. MX396021 or
MX396022) to MicroFID during the first step of calibration.
Alternatively you can use an additional gas sampling bag and a
source of hydrocarbon free air. Air should have not more than
0.1 ppm total hydrocarbons (THC).
If you will be using large tanks of gas, specify a single stage,
high purity regulator with a CGA 590 connection at the inlet.
The regulator should also have a 1/4” p arallel, compression
fitting with which to connect the regulator to the gas bag
adapter. The delivery pressure must be adjustable to
approximately 40 psig (275 kPa). You should obtain an
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