Det-Tronics PIRVOLLT Volumetric Infrared Hydrocarbon Gas Process Monitor for Light Hydrocarbons - Manual (Page 8)

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