Specifications

GasA.31 Infrared 8/01/201152-1002-8.1
INFRARED
PIRVOL Infrared Hydrocarbon Gas Process Monitor
PIRVOL Infrared Hydrocarbon Gas Process Monitor (Spec Sheet: 90-1137) is a point-type,
hazardous location rated infrared gas process monitor designed for use in extractive vapor
sampling applications. All PIRVOL models provide a continuous 4-20 milliampere signal output
that is proportional to a 0-90% for VR and 0-100% for LT and HV, by volume hydrocarbon
vapor concentration. Each unit is provided with a sealed, aluminum vapor sampling enclosure
fitted with brass compression tubing fittings (0.25 inch o.d. tubing) that are used to attach
vapor sample stream inlet and exhaust lines. The PIRVOL-LT model is optimized for natural
gas well-logging applications where accurate measurement of light hydrocarbon vapors
such as methane and ethane is desired. The PIRVOL-VR model is optimized for gasoline
vapor recovery applications where an accurate measurement of heavy hydrocarbon gases is
required. The PIRVOL-HV model is optimized for natural gas well-logging applications where
accurate measurement of heavy hydrocarbon vapors such as propane is desired.
NOTE: External vapor sampling conditioning and control equipment is generally required for
proper operation of the PIRVOL gas monitors.
ACCESSORIES MONITOR
KEY:
= Required
= Option
= Choice Required
PIRVOL
Monitor
Gas A.31
Power Supplies
Gas D.13
Model PIRTB
Series
Termination Box
Gas A.21