Det-Tronics PIRVOLVR Volumetric Infrared Hydrocarbon Gas Process Monitor for Vapor Recovery Systems User Manual

Page 3

INSTRUCTIONS

Volumetric Infrared Hydrocarbon

Gas Process Monitor

for Vapor Recovery Systems

PIRVOLVR

APPLICATION

PIRVOLVR is a point-type infrared hydrocarbon gas

process monitor. It provides a continuous 4-20

milliampere (mA) output signal that is proportional

to propane vapor concentrations from 0 to 90% by

volume.

PIRVOLVR is designed for use in extractive vapor

sampling systems where the vapor concentration is likely

to be above the lower flammability limit (LFL). Typical

applications for the PIRVOLVR include gasoline transfer

vapor recovery systems, where the vapor recovery

processor or vent is monitored for efficient vapor recovery

and control.

PIRVOLVR is furnished with a sealed aluminum or stainless

steel vapor sampling enclosure. Brass compression-

type tubing fittings on the enclosure (for use with 0.25

inch o.d. tubing) allow easy connection to the inlet and

exhaust lines of the vapor sample extraction system.

PIRVOLVR is CSA certified for use in Class I, Division 1,

Groups B, C and D; and Class I, Division 2, Groups A, B,

C and D areas.

FEATURES

• Routine calibration not required.
• Continuous self-test automatically indicates a fault or

fouled optics condition.

• Performs well in the presence of high concentrations

or constant background levels of hydrocarbons and

in oxygen depleted atmospheres.

• There are no known poisons, e.g. silicones or

hydrides, that compromise the integrity of the

measurement.

SPECIFICATIONS

INPUT VOLTAGE—

24 Vdc nominal. Operating range is 18 to 32 Vdc including

ripple.

POWER CONSUMPTION (Watts)—
Input Voltage:

18 Vdc

24 Vdc

32 Vdc

Nominal 3.5 4.6 6.2

Maximum 4.0 5.5 7.0

DETECTION RANGE—

0 to 90% by volume propane.

DETECTABLE GASES—

PIRVOLVR responds to most hydrocarbon gases,

however, the signal processing program is only accurate

for propane.

CURRENT OUTPUT—

4 to 20 mA current source (non-isolated). For output

levels below 4.0 mA and above 20 mA, refer to Table 1.

7 .1

Rev: 1/12 95-8522