Mounting; Cabling Directly To Irmax - Crowcon IRmax Installations-, Bedienungs- Und Wartungsanleitung

2. Installation 2. Installation

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 15.
IRmax should be installed at the designated location with the sensor barrel horizontal
+/- 15° (orientation shown on Diagram 2 on page 3). 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
6 6
Signal
0V (ground)
+V (24V IRmax)
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).