Mettler Toledo IND131 Installationshandbuch Seite 40

IND131/IND331 Terminals Installation Manual
Sealing the Gland
The IND131 junction box terminal and IND331 harsh environment terminal are
designed to withstand severe washdown environments. However, care must be
taken when installing cables and/or connectors that enter the terminal enclosure.
To ensure a watertight seal:
•
Pass the cables through an appropriately sized cable grip before connecting
the wires. Figure 2-27 shows one cable gland (12mm) installed, and a
second gland (16mm) disassembled.
•
Depending upon the diameter of the cable to be installed in a 16mm gland,
select one of the two different sized rubber grommets (if required) to properly
seal around the cable. There are no grommets for the 12mm glands.
• When making cable terminations inside the enclosure, ensure that the cable
length from the terminal strip/connector to the terminal housing is sufficient so
that no strain is placed on the connector assembly when the housing is in the
fully open position.
• After making the wiring connections as described in the next section, ensure
the nut on the cable gland is tightened properly to seal around the cable.
Ensure that this seal is watertight.
2-16
Figure 2-27: Cable Gland Components
Table 2-2: 16mm Grommet Cable Sizes
Grommet Cable Diameter
None 7–10 mm (0.28–0.39 in.)
Larger size hole 5– 6 mm (0.20–0.24 in.)
Smaller size hole 3–4 mm (0.12–0.16 in.)