2. Installation
7
Detecting Gas Saving Lives
English
2.2 Mounting
IRmax
can be mounted in three ways:
1. Using the
Crowcon
mounting bracket with direct field cable connection (4-20mA
operation only).
2. Using a spigot gland to connect to an existing Exe or Exd certified junction box.
Crowcon
supplies a suitable spigot gland as an optional extra (see 3 below).
3. Using the optional
Crowcon
auxiliary junction box and spigot gland.
Optional parts are listed in Section 5 on page 16.
IRmax
should be installed at the designated location with the sensor barrel horizontal
+/- 15° (orientation shown on Diagram 2 on page 4). This ensures that dust or water
will not collect on the optical components.
2.3 Cabling directly to IRmax
This option is suitable for 4-20mA operation only. A
Crowcon
mounting bracket is required
to retain the detector to a wall or 2” (50 mm) pipe.
Diagram 4: Field cable connections on the
IRmax
Connect field cables using a certified gland via the chosen cable entry on the
IRmax
body
(M20 or 1/2" NPT), as indicated in Diagram 4.
Crowcon
recommends cable glands are
installed pointing downwards.
Ensure that cable glands with the appropriate
Exd certification are used, and that the thread
length does not exceed the length specified in the
diagram (left).
Signal
0V (ground)
+V (24V
IRmax
)
15mm MAX
Status LED