accident prevention regulations and also in the in-
dustry guidelines issued by the DVWG, GL, etc.
and the VDE as well as the local EVUs.
The instrument must be decommissioned and se-
cured against inadvertent re-operation if a situation
arises in which it must be assumed that safe opera-
tion is no longer possible. Reasons for this assump-
tion could be:
•
evident damage to the instrument
•
failure of the electrical circuits
•
long storage in temperatures over 85°C
•
considerable strain due to transport
Repairs may be carried out by the manufacturer on-
ly.
A professional single conformity inspection as per
DIN EN 61010, section 1, must be carried out be-
fore the instrument can be re-commissioned. This
inspection must be performed at the manufacturer's
location. Correct transport and storage of the in-
strument are required.
1.5
Unauthorised Modification
Modifications of or other technical alterations to the
instrument by the customer are not permitted. This
also applies to replacement parts. Any modifica-
tions/alterations required will be carried out by
Fischer Mess- und Regeltechnik GmbH only.
1.6
Impermissible modes of operation
The operational safety of this instrument can only
be guaranteed if it is used as intended. The instru-
ment model must be suitable for the medium used
in the system. The limit values given in the technical
data may not be exceeded.
1.7
Safe working practices for mainte-
nance and installation work
The safety instructions given in this operating man-
ual, any nationally applicable regulations on acci-
dent prevention and any of the operating company's
internal work, operating and safety guidelines must
be observed.
The operating company is responsible for ensuring
that all required maintenance, inspection and instal-
lation work is carried out by qualified specialized
personnel.
1.8
Explanation of symbols
WARNING!
… indicates a potentially dangerous
situation, non-observance of which
could endanger persons, animals, the
environment or objects.
INFORMATION!
… highlights important information ef-
ficient and smooth operation.
TIP!
… indicates recommendations that are
not specifically necessary in certain
situations but which could be useful.
2
Application purpose
Electronic manometer for measuring over-pressure
and under-pressure of fluid and gas-like measuring
substances. The device is to be exclusively used for
the applications agreed between the manufacturer
and the user.
Explosion hazard area classification
The digital manometers ME01 are suitable for use
as 'Electrical equipment for use in areas with com-
bustible gases', zone 2.
Designation as per guideline 2014/34/EU
II 3G Ex nA IIC T4
3
Product and function description
3.1
Design and mode of operation
A ceramic measuring cell acts as the pressure
transducer. The high resistance of the ceramic ma-
terials that are used allow use even for aggressive
media. There is a resistance measuring bridge at-
tached to the side of the measuring diaphragm that
faces away from the medium. When pressure is ex-
erted, the membrane distorts in the elastic range. t
the same time, the resistance values of the bridge
change proportionally to the measuring pressure.
These values are implemented and displayed by
the installed electronics. There are electrical uni-
form signals 0/4…20 mA and 0…10 V in a 3-wire
system available for remote transmission.