Warning
• The Gas Detector is not explosion-proof. It must be installed in a safe location.
• When detecting highly adsorbent gases remove the internal filter and install proper
end of line filter (see page 8)
• The sample distance on the PS-7 is 50 feet for non-absorbent gases and 30 feet for
absorbent gases. FEP TEFLON tubing must be used with absorbent gases.
Caution
• The Gas Detector should be installed in a location free from shock and vibration, and
away from sources of high frequencies or magnetism.
• Do not use the gas collector hood when detecting gas concentrations in narrow spaces
such as ducts.
• Do not install the Gas Detector in locations where the temperature may exceed 40°C or
dew condensation or sudden temperature fluctuations may occur.
• The Gas Detector is not drip-proof.
• The pressure difference between the gas inlet/exhaust ports and the ambient
atmosphere must be within 1 kPa. The pressure difference between the inlet port and
exhaust port must be such that the inlet port is a negative pressure of 1 kPa or less.
• Install the Gas Detector vertically. (Inlet port and exhaust port must be in downward
direction.)
• Locate the detector tip (the tip of the gas sampling pipe) to be appropriate for the
specific gravity of the gas to be detected. It must also be placed in a location where the
target gases are likely to accumulate.
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