Model IR400
12
To Mount the IR400
The IR400 must rest horizontally to reduce the possibility of dirt and dust building up on the
lens.
•
The open slots of the gas passage must be straight up and down for the gas to rise up
and through the unit.
•
If the detector is installed with the metal section blocking the gas flow, it will slow down
the detector’s response.
Mount the attached junction box or IR4000M(S) enclosure using the two bolt holes.
•
NOTE:
There is also a duct mounting kit available from General Monitors with
separate instructions.
3.2.2 Cabling Safety Notices
CAUTION:
The Model IR400 detector and Model IR4000M(S) monitor system contain
components that can be damaged by static electricity. Special care must be taken when wiring
the system to ensure that only the connection points are touched.
WARNING:
Under
NO
circumstances should equipment be connected or disconnected when
under power. This is contrary to hazardous area regulations and may also lead to serious
damage to the equipment. Equipment damaged in this manner is not covered under warranty.
3.2.2.1 European Union (EU) Approved Cable Armor and Screens
Interconnecting cables must have an overall screen or screen and armor. Cable BS5308 Part
2, Type 2, or equivalent is suitable. Note that the terms ‘screen’ and ‘shield’ are equivalent for
the purpose of this manual. The cable armor must be terminated in a suitable cable gland at the
detector to ensure a positive electrical connection.
3.2.2.2 Cable Termination in Non-Hazardous Areas
•
The
cable
armor
must be connected to
safety earth
in the safe area.
•
The cable screen (drain wire) must be connected to an instrument earth in the safe area.
•
The power supply 0V return must be connected to an instrument earth in the safe area.
•
The interconnecting cables should be segregated from power and other noisy cables.
Avoid proximity to cables associated with radio transmitters, welders, switch mode power
supplies, inverters, battery chargers, ignition systems, generators, switch gear, arc lights
and other high frequency or high power switching process equipment.
•
In general, maintain separation of at least 1 meter between instrument and other cables.
Greater separations are required where long parallel cable runs are unavoidable. Avoid
running instrument cable trenches close to
lightning conductor earthing pits.
•
Complete all cable insulation testing before connecting the cable at either end.
3.2.3 Applying Sealants to Conduit Entries
Please keep the following warnings and cautions in mind when you install the IR400 and
IR4000 units, to make sure that the equipment maintains the appropriate seals for a Class I
hazardous location.
WARNING:
Each conduit run from an IR400 junction box or display unit within a hazardous
location (and from a hazardous to a non-hazardous location) must be sealed so that gases,
Summary of Contents for IR400
Page 2: ......
Page 15: ...Model IR400 11 Figure 5b IR400 Mounting Dimensions with a European Box ...
Page 20: ...Model IR400 16 Figure 7 Wiring Diagram from IR400 to Control Equipment ...
Page 41: ...Model IR400 37 9 6 Engineering Documentation ...
Page 45: ...Model IR400 HART Field Device Specification for Point IR Gas Detector ...
Page 78: ...Model IR400 Infrared Point Detector for Hydrocarbon Gas Applications Modbus programming guide ...
