5
Product description
Bushings
Hexagon screws 3 mm
Status LED
„ALARM“
Status LED „POWER“
Status LED „ERROR“
Sensor module
Mounting holes
PCB electronics
Jumper connector of
the terminating
resistor RS485
Terminal block RS485 B
Terminal block RS485
A
4-20 mA signal terminal
block
GND power supply
terminal block
DIP switch for the
RS485 adress
+24V DC Power
supply terminal block
Assembly and disassembly of the transmitter
Before assembling, read the valid instalation standarts EN 60079-29-2 (Selection, instalation, use and maintenance of
detectors for combustible gases and oxygen) and EN 45544-4 (Guildelines for the selection, installation, use and maintenance
of detectors of toxic substances).
Secure that the sensor is reachable by air. The transmitter must be in a free area with no obstacles in its way (furniture etc.)
Ensure that the input of the sensor cannot be polluted by layers of dust or other contamination.
To maintain IP protection the transmitter must be assambled with the sensor module facing downwards.
1.
Assembly of the transmitter
The transmitter consists of four parts - the body of the transmitter, the removable sensor and bushings.
Transmitter assembly procedure is as follows:
a)
Disassemble the transmitter with the four hexagon socket screws 3 mm
b)
Use a screwdriver to break out holes for the bushings
c)
Mount the transmitter on a flat surface with four 6 mm fasteners in height above the floor with the gas entrance
facing downwards, as specified by the detected substance
d)
Direct the cable trough the bushings
e)
Connect the wiring to the terminal block according to " Installation of wiring for RS485".
f)
Assemble the transmitter with the four hexagon sockets scews 3 mm
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HRW Limited
www.hrw.hk
