BARTEC BENKE HYGROPHIL F 5673, Руководство по эксплуатации, Страница: 30 / 129

Safety precautions
2-2
HYGROPHIL® F 5673 Operating manual, Software version 1.8.x, 387896MDHEN(14.06.2013)
Instructions for the safe usage of the device
● The humidity measurement sensor is installed in the partition wall of the
zone which in accordance to the definitions of device group II requires
category 1 equipment (zone 0).
● For the application as category 1 equipment, the ambient conditions of
the humidity measurement sensor have to comply with the atmospheric
conditions in accordance with EN 50284 (temperature range from –20°C
to +60°C, absolute pressure range from 0,8 bar to 1,1 bar).
The humidity measurement sensor can also be applied as category 2
equipment in zone 1 at an ambient temperature Ta or a medium
temperature TM ranging from –30°C to +60°C.
● If the device is installed in systems with the risk of overvoltage, carry out
measures in accordance with EN 60079-14, para. 12.3 ! (also see DIN
VDE 0185)
● Humidity measurement sensors of the types L166x involve the risk of an
electromagnetic charging of the plastic casing! Only use a moistened
cloth to clean the casing!
● The intrinsically safe circuits of the HYGROPHIL
®
F are galvanically
separated up to Vm = AC 253 V (also see EN 60079-14, para. 12.3).
● If the device is installed in pressure lines or pressure vessels, make sure
the appropriate specifications (pressure vessel regulation DruckbehV,
TRG, GasHL-VO, TRGL, ...) are complied with!
● The humidity measurement sensor has to be included in the respective
tightness and pressure tests.
● Usually an adapter with a screw thread is applied between the double-
ferrule swage fitting of the humidity measurement sensor and the facility.
On the facility side at least 5 threads of this adapter must be operative.
● Mounting the double-ferrule swage fitting:
- First rotate the nut fingertight. If necessary tighten the nut by using a
spanner until the measurement tube will not turn by hand.
- Mark the nut in the 6 o´clock position.
- While holding the fitting body steady with a spanner tighten the nut
with a second spanner one and one-quarter turns to the 9 o´clock po-
sition (see also section 3.3.3).
● Only use BARTEC-fibre-optic cables.
● Make sure the cable of the intrinsically safe PT100 circuit and of the
intrinsically safe pressure transmitter circuits are correctly laid. Do not lay
the cables together with power supply cables in joint cable channels.
Make sure there is a sufficient distance from electromagnetic interference
fields! To prevent any potential equalisation currents, tie the port of the
shielding to GND at only one place.
● In the construction of the humidity measurement sensor, epoxy resins are
used. They are usually resistant to the mediums mentioned in the
resistance list (see table p. 2-3). In case of application as category 1
equipment in other mediums, the resistance has to be checked
separately.