Mounting; Cabling Directly To Irmax - Crowcon IRmax Instructions D'installation, D'utilisation Et De Maintenance

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.
15mm MAX
Detecting Gas Saving Lives
Status LED
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).
7
2. Installation
Signal
0V (ground)
+V (24V IRmax)