Det-Tronics PIRVOLLT Volumetric Infrared Hydrocarbon Gas Process Monitor for Light Hydrocarbons User Manual

Page 8

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6

3 .1

95-8631

WIRINg pROCEDURE

IMPORTANT

Do not apply power until the wiring procedure is
complete and has been verified.

1. Locate the sensor where it will be accessible for

maintenance. Excessive heat or vibration can result

in premature failure of any electronic device and

should be avoided if possible.

2. The PIRTB should be electrically connected to earth

ground.

3. Figure 8 shows typical wiring for stand alone

operation. Figure 9 shows typical wiring for

PIRVOLLT with Det-Tronics’ PIRTB. Figure 10 shows

the wiring terminals located inside the PIRTB. The

PIRVOLLT wiring color code is:

Red lead

= +24 volts dc

Black lead

= – (common)

White lead

= 4 to 20 mA signal output

Yellow lead* = Calibration input

Green lead = Chassis ground

* If the calibration wire (yellow lead) is not being

used, do not connect this wire to ground. Trim

excess length and insulate wire so no shorting

can occur.

Figure 6—Tall Cover PIRTB with Window

Figure 7—Short Cover PIRTB

Figure 9—Typical PIRVOL Wiring, with PIRTB

PIRTB TERMINATION BOX

D1756

PIRVOL

PROCESS MONITOR

GREEN
YELLOW
WHITE
BLACK
RED

SPARE

CAL

4 – 20

RET

+

24

CHASSIS

CAL

4 – 20

RET

+

24

24 Vdc

4-20 mA IN


+

Figure 8—Typical PIRVOL Wiring, Stand Alone Configuration

RED

BLACK

WHITE

YELLOW

GREEN

4 TO 20 mA

PIRVOL

+

B2031

NOTES: CALIBRATION PUSHBUTTON, CURRENT METER

AND POWER SUPPLY ARE NOT SUPPLIED.

CALIBRATE SWITCH SHOWN INSTALLED, HOWEVER,

FIELD CALIBRATION IS NOT REQUIRED UNDER

NORMAL CIRCUMSTANCES.

24 VDC

POWER SUPPLY

+

CALIBRATE

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