RADWAG PUE HX5.EX, User Manual

Page: 8 / 52

8
4. SAFETY REQUIREMENTS
Prior the first use, carefully read this User Manual. Use the weighing device
only as intended.
PUE HX5.EX-* indicators can be operated in:
•
zones 1 and 2 where there is a risk of explosion due to mixture of air with
vapour, mist or gas, classified as explosion group IIC, IIB and IIA and as
temperature class T1, T2, T3, T4,
•
zones 21 and 22 where there is a risk of explosion due to mixture of air
with dust, flammable fibres and volatile fuels, classified as explosion group
IIIC, IIIB and IIIA.
All instruments connected to indicator’s digital IN/OUT and
connectors, require ‘ia’ or ‘ib’ protection.
Explosion safety of PUE HX5.EX-* indicator is ensured by:
•
Intrinsically safe design of the PUE HX5.EX-* indicator, adhering
to regulations of EN 60079-0 and EN 60079-11.
•
EU-type examination certificate, UE KDB 17ATEX0066X, and IECEx
OBAC 19.0001X certificate.
•
Use of certified RADWAG-manufactured power supplies (exclusively):
- PM01.EX-1 power supply intended for operation in zone where there
is an explosion risk, zones: 1, 2, 21 and 22.
- PM01.EX-2 power supply intended for operation in safe area, equipped
with intrinsically safe circuits which may be placed in zones 1, 2, 21
and 22.
•
Not exposing the indicator to static electricity. Functional grounding cable
which levels the potentials must always be connected to the marked
terminal. Disconnecting the functional grounding cable is forbidden.
Disconnecting potentials equalizing cable (e.g. when there is a need
to place the device elsewhere) is allowed only if there is no risk
of explosive atmosphere.
•
Adhering to this user manual guidelines
.