Vaisala HUMICAP HMT370EX Serie Bedienungsanleitung Seite 12

The different probe head variants are designed for a range of applications, and have their own
specifications. Ensure that the transmitter body, probe body, and probe head are each placed
in an environment that matches the specification of the part. For allowed ambient temperature
ranges, see Table 2 (page
Table 2 Allowed ambient temperature ranges
Equipment part
Transmitter body
Probe body
Probe heads HMP374, HMP375, HMP377, and
HMP378
Probe head HMP371
Probe head HMP373
2.1.1 Specific conditions of use
CAUTION!
to be ensured that sparks due to impact or friction do not occur.
Wiring requirements
• The cable glands and cables used for wiring the device must not impair the Ex protection.
• Unused lead-throughs must be sealed using Ex compliant plugs.
• Select a strain relief option that suits the application (either use cable glands that include
strain relief or install separate clamps: see IEC 60079-14).
CAUTION!
input before completing the wiring and closing the transmitter body.
8
8).
With the installation of the equipment in Zone 0 Group II area it has
Connect only de-energized wires. Never switch on the power supply
Allowed ambient temperature range
-40 °C ... +60 °C (-40 ... +140 °F)
-40 °C ... +60 °C (-40 ... +140 °F)
Temperature class T4:
-70 °C ... +120 °C (-94 ... +248 °F)
Temperature class T3:
-70 °C ... +180 °C (-94 ... +356 °F)
Temperature class T4:
-40 °C ... +60 °C (-40 ... +140 °F)
Temperature class T4:
Rubber cable version:
-40 °C ... +80 °C (-40 ... +176 °F)
FEP cable version:
-40 °C ... +120 °C (-40 ... +248 °F)
M212306EN-A