Det-Tronics UD10 FlexVu Explosion-Proof Universal Display Unit - Manual (Page 39)

H-2 95-8661 4.2
instAllAtion notes
Important
Hydrocarbon-based grease emits hydrocarbon
vapors that will be measured by PointWatch,
resulting in inaccurate gas level readings.
use
only low vapor pressure Lubriplate grease or
teflon tape on the pointWatch detector and
associated termination box. Do not get grease
on the optics of the detector. A suitable grease is
listed in the “ordering Information” section in this
manual.
Important
In applications where both PointWatch and
catalytic type sensors are used, ensure that the
grease used to lubricate the PointWatch detector
threads does not come into contact with the
catalytic sensors, since poisoning of the catalytic
sensors could result. It is strongly recommended
that maintenance personnel wash their hands
between handling the two types of sensors.
orientAtion
It is highly recommended that the pIR9400 be
installed in the horizontal position.
The detector
is not position-sensitive in terms of its ability to detect
gas. However, the weather baffle assembly provides
superior performance when installed in a horizontal
position. (See illustration below).
UD10 Wired to PiR9400 with PiRTb Termination box
UD10 DISPLAY UNIT
SEE NOTE 1
NOTE 1 CONNECT THE GREEN SENSOR LEAD
TO THE CHASSIS GROUND LUG ON THE
INSIDE BOTTOM OF THE PIRTB.
NOTE 2 HOUSINGS MUST BE ELECTRICALLY
CONNECTED TO EARTH GROUND. A2556
Sensor Connector
Power Supply Connector
Output Loop
Connector
MODBUS
Connector
R
ela
y Connect
or
P1
J2
J3
J4
P2
4-20 mA +
4-20 mA –
SHIELD
COM
RS485 A
RS485 B
HIGH ALARM COM
HIGH ALARM NC
HIGH ALARM NO
AUX ALARM COM
AUX ALARM NC
AUX ALARM NO
LOW ALARM COM
LOW ALARM NC
LOW ALARM NO
FAULT COM
FAULT NC
FAULT NO
24 VDC
–
24 VDC
+
SHIELD 24 VDC
–
24 VDC
+
SHIELD
SHIELD
C
ALIBR
A
TE
24 VDC
–
4-20 mA 24 VDC
+
P1-3
P1-2
P1-1
J2-3
J2-2
J2-1
J4-1
J4-2
J4-3
J4-4
J4-5
J4-6
J4-7
J4-8
J4-9
J4-10
J4-11
J4-12
J3-1 J3-2 J3-3 J3-4 J3-5
P2-6 P2-5 P2-4 P2-3 P2-2 P2-1
PIRTB JUNCTION BOX
PIR9400
DETECTOR
YELLOW
WHITE
BLACK
RED
SPARE
CAL
4 – 20
RET
+24 +24
RET
4 – 20
CAL
GREEN
CHASSIS