21
1. Application
The megohmmeter ΩMegaSafe ISO 1Ex is a high-
voltage testing device for safe testings of insulating
resistances up to 2 GΩ, with test voltage of 32 up to
500 V and with digital read out system.
It is suitable for testing antistatic floors, surface
resistivity, leakage resistance, volume resistance and
insulation resistance.
Measurements up to 2 TΩ are possible, see section
4.6. The device is external voltage-proof up to 500 V.
It has an integrated protective series resistor of
500 kΩ for safe application in Ex areas.
Reliable test results are achieved by the current and
voltage measurement procedure.
1.1 Intended use
This device is intended for use in applications as
described in the operating instructions only. Thus,
it is imperative to observe the notes on safety and
the technical data in conjunction with the ambient
conditions.
Any other form of usage is not permitted and can
lead to accidents or destruction of the unit.
Any misuse will result in the expiry of all guarantee
and warrantly claims.
2. Safety
You have decided on an instrument which provides
you with a high level of safety.
The device complies with the regulations of DIN IEC
60079-0 / DIN IEC 60079-11 and general
requirements according to EN IEC 61010-1.
In order to assure correct and safe operation, it is
imperative that you read these operating instruc-
tions entirely before placing your
instrument into service.
When using this device follow thoroughly all
instructions contained therein.
Please observe the following safety
precautions:
The insulation tester may only be used by
experienced, safety-related instructed and
qualified personnel, that is able to recognise
Ex endangerments and to make safety
arrangements.
Observe the safety-related characteristics in
Ex areas (see section 10)
The ISO 1Ex may only be used in electricity
networks with an operating voltage of
maximal 500 V.
In Ex areas both device connections have to
be attached securely to the test line.
For tests of wires and cables or capacities up to
200 nF the test in ex areas has to be started
with 32 V (see section 4.5).
Measurements may only be performed in
zero potential system parts.
