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SEE NOTE 2
UD10
DISPLAY UNIT
Sensor Connector
Output Loop
Connector
4-20 mA +
P1-3
P1-2
4-20 mA –
SHIELD
P1-1
P1
J2
COM
J2-3
J2-2
RS485 A
J2-1
RS485 B
MODBUS
Connector
Power Supply Connector
E2403
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.
4.3
J3
J4-1
HIGH ALARM COM
HIGH ALARM NC
J4-2
HIGH ALARM NO
J4-3
AUX ALARM COM
J4-4
J4-5
AUX ALARM NC
J4-6
AUX ALARM NO
J4-7
LOW ALARM COM
J4-8
LOW ALARM NC
J4-9
LOW ALARM NO
FAULT COM
J4-10
FAULT NC
J4-11
FAULT NO
J4-12
J4
P2
UD10 Wired to PiR9400 with STb Termination box
STB TERMINATION BOX
BLACK
NOTE 1
CONNECT THE GREEN SENSOR LEAD TO THE CHASSIS GROUND LUG
ON THE INSIDE BOTTOM OF THE STB ENCLOSURE.
NOTE 2
GROUND THE SHIELD AT THE DISPLAY UNIT END ONLY.
NOTE 3
HOUSINGS MUST BE ELECTRICALLY CONNECTED TO EARTH GROUND.
C-2
PIR9400
POINTWATCH
95-8618
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