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OPERATING MANUAL HPC & UMC4
11. UMC4 operating conditions
11.1 Installation conditions and cable glands
When mounting the UMC4 transmitter, a vibration-free installation site must be guaranteed.
Warning:
Additional cable glands:
They are not contained in the scope of supply. The operator is responsible
for guaranteeing that cable glands or screws according to the enclosures
certification are used. The type of thread present is stated on the rating
plate.
For the connection between sensor and transmitter a metalized cable gland
must be used for the screen.
(See 12.5.1.2
“Connection of the sensor” page 37)
11.2 NPT cable glands
The transmitter housing SG4 is designed with M20x1.5 threads for cable glands. For cable glands with
NPT thread, a certified matching NPT adapter may be ordered directly from the manufacturer. These
NPT adapters are to be directly mounted onto the
UMC4’s transmitter housing.
Danger
:
It is the customer’s responsibility to ensure the NPT adapters are mounted
securely! Only correctly tightened adapters will guarantee the Ex-d protection
class of the enclosure!
11.3 Environmental conditions
11.3.1 Ambient temperature
− 20 °C to + 60 °C (-4 °F to 140 °F), below 0 °C (32 °F) the readability of the LC display will be limited
11.3.2 Ambient temperature range
− 20 °C to + 60 °C (-4 °F to 140 °F)
11.3.3 Storage temperature
−25 °C to + 60 °C (-13 °F to 140 °F)
11.3.4 Ingress protection
Standard enclosure SG4, IP 68 (NEMA 6P)
Explosion-proof Ex d electronics enclosure
Terminal compartment: with terminals and Ex e
“Increased safety” type of protection, or alternatively
Ex d
Warning:
Ingress protection IP 68 can only be achieved if suitable and sufficiently tight-
ened cable glands or conduits are used. If the cable glands are only tightened
sufficiently, water may leak into the terminal compartment of the enclosure.
Danger:
Particular care must be taken if the enclosure
’s window becomes fogged or
discolored. This could mean that moisture, water or product is seeping through
the wire sheath into t
he transmitter’s housing.