Vaisala HMT370EX Guide D'installation page 18

4.2 Installing HMT370EX
• Screws for mounting the transmitter:
• Installation directly through the transmitter body: 2 pcs Ø 5.5 mm screws
• Installation with optional mounting plate: 4 pcs Ø 5.5 mm screws and 2 pcs
M6 Allen screws
• Crosshead screwdriver for transmitter cover captive screws and wiring screw
terminals
• Flathead screwdriver for the grounding terminal
• Cable glands, conduits, and plugs as required in your application, and suitable
tools for attaching and tightening them
• Wire-cutting pliers
Optional:
• Crimping tool and wire ferrules
• Allen key (5 mm) for probe body locking wheel
• Ex-compliant multimeter for testing analog outputs
Steps 1 ... 7 refer to illustrations 1 ... 7 on illustration pages 3 and 4 in the beginning
of the document.
1. Select a surface (for example, a wall) for installing the transmitter. You can mount the
transmitter directly to the installation surface with 2 screws, or use an optional mounting
plate that attaches to the back of the transmitter.
a. Installation without mounting plate: attach the transmitter body directly to the
installation surface with 2 Ø 5.5 mm screws. The left-hand screw hole has extra
vertical space for adjusting the position of the transmitter after you have attached the
right-hand screw.
b. Installation with mounting plate: attach the mounting plate to the installation surface
with 4 Ø 5.5 mm screws, and then attach the transmitter to the mounting plate with 2
M6 Allen screws.
2. Attach cable glands (1 or 2) to the wiring lead-throughs as required in your application.
Note the cable gland requirements listed in
• Both lead-throughs have M20x1.5 threads.
• Plug possible unused lead-throughs with Ex compliant seals.
• The glands and plugs must be water and dust tight.
14
Specific conditions of use (page
M212306EN-A
8).