FISCHER ME01 Series Data Sheet And Operating Manual

d e v e l oping s o l u t i o n s

*09005086* DB_BA_EN_ME01_R Rev.A 12/16

*09005086*

Data Sheet and Operating Manual

ME01

Digital manometer

ME01 ## # 87 # HL R####

Gas explosion protection zone 2

Table of Contents

1 Safety guidelines
2 Application purpose
3 Product and function description
4 Installation and assembly
5 Commissioning
6 Maintenance
7 Transportation
8 Service
9 Accessories
10 Waste disposal
11 Technical Data
12 Dimensional drawings
13 Order Codes
14 Attachments

1 Safety guidelines

1.1 General Information

This operating manual contains instruc­tions fundamental to the installation, op­eration and maintenance of the device

that must be observed unconditionally. It
must be read by the assembler, operator and the
specialized personnel in charge of the instrument
before it is installed and put into operation. This op­erating manual must always be accessible at the
place of installation.

The subsequent sections on general safety instruc­tions 1.2 - 1.7 as well as the following special in­structions ranging from intended use to disposal 2­10 contain important safety instructions the non­observance of which can cause danger to persons,
animal and physical objects.

1.2 Personnel Qualification

The instrument may only be installed and commis­sioned by specialized personnel familiar with the in­stallation, commissioning and operation of this
product.

Specialized personnel are persons who can assess
the work they have been assigned and recognize
potential dangers by virtue of their specialized train-

ing, their skills and experience and their knowledge
of the pertinent standards.

For explosion-proof models the specialized person­nel must have received special training or instruc­tion or be authorized to work with explosion-proof
instruments in explosion hazard areas.

1.3 Risks due to Non-Observance of Safe­ty Instructions

Non-observance of these safety instructions, the in­tended use of the device or the limit values given in
the technical specifications can be hazardous or
cause harm to persons, the environment or the
plant itself. The supplier of the equipment will not be
liable for damage claims if this should happen.

1.4 Safety Instructions for the Operating Company and the Operator

The safety instructions governing correct operation
of the instrument must be observed. The operating
company must make them available to the installa­tion, maintenance, inspection and operating per­sonnel. Dangers arising from electrical components,
energy discharged by the medium, escaping medi­um and incorrect installation of the instrument must
be eliminated. The particulars can be
found in the respective regulations
such as DIN, EN, explosion hazard,

WARNING!

… indicates a potentially dangerous

situation, non-observance of which
could endanger persons, animals, the
environment or objects.

INFORMATION!

… highlights important information ef­ficient and smooth operation.

TIP!

… indicates recommendations that are

not specifically necessary in certain
situations but which could be useful.

accident prevention regulations and also in the in­dustry guidelines issued by the DVWG, GL, etc.
and the VDE as well as the local EVUs.

The instrument must be decommissioned and se­cured against inadvertent re-operation if a situation
arises in which it must be assumed that safe opera­tion is no longer possible. Reasons for this assump­tion 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 on­ly.

A professional single conformity inspection as per
DIN EN 61010, section 1, must be carried out be­fore the instrument can be re-commissioned. This
inspection must be performed at the manufacturer's
location. Correct transport and storage of the in­strument 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 modifica­tions/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 instru­ment 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 mainte­nance and installation work

The safety instructions given in this operating man­ual, any nationally applicable regulations on acci­dent 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 instal­lation work is carried out by qualified specialized
personnel.

1.8 Explanation of symbols

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 com­bustible 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 ma­terials that are used allow use even for aggressive
media. There is a resistance measuring bridge at­tached to the side of the measuring diaphragm that
faces away from the medium. When pressure is ex­erted, 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 uni­form signals 0/4…20 mA and 0…10 V in a 3-wire
system available for remote transmission.

Three-conductor circuit

output
Signal

Operating
voltage

4 Installation and assembly

As standard, the device with the connecting port for
connection to pipes and other connection parts,
such as the welding sleeve, union nut with soldering
and welding nipples, is equipped with soldering and
welding nipples (see data sheet MZ...). It can be
mounted to a wall using the wall bracket (see data
sheet MZ...). Manometer screw connections for 10,
8, 6 mm dia. pipes can be supplied for connection
to pipes.The enclosure protection type IP 65 is only
guaranteed, if a suitable power supply cable is
used.

4.1 Process connection

• By authorized and qualified specialized person-
nel only.

• Only for the designated mechanical process
connection - for the model, see the order code
on the device type plate.

• The pipes need to be depressurized when the
device is being connected.

• Do not mount the device against existing water
columns, and secure suitably against pressure
surges.

• Use only with media suitable for operation.

• Observe the maximum pressure.

• Check that the pressure connections do not

leak before commissioning.

4.2 Electrical connection

• By authorized and qualified specialized person-
nel only.

• Disconnect the system from the mains before
connecting the device.

• Do not take out the connecting plug while ener-
gized

Explosion protection instructions

To guarantee safe operation of the in­strument, the supply circuit must satisfy
the requirements for zone 2, category 3,

and the locally applicable regulations
and guidelines for the installation and operation of
electrical systems in explosion hazard areas (e.g.
EN 60079-0).

4.3 Wiring diagram

Do not take out the connecting plug
while energized

Static electricity

The case must be equipped with an
earth connection to reduce the surface
resistance.

5 Commissioning

• All electrical supply, operating and measuring
lines, and the pressure connections must have
been correctly installed before commissioning.
All supply lines are arranged so that there are
no mechanical forces acting on the device.

• If liquid measuring media are used the pressure
connection line must be vented, as liquid col­umns of different heights in the pipes can cause
measuring errors. The instrument must be pro­tected against frost if water is used as a medi­um.

• The pressure sensing lines must be installed on
an incline so that no condensation pools can
form.

• The pressure sensing lines need to be kept as
short as possible and installed without sharp
bends to avoid interfering delay times.

• Appropriate shutoff valves must be provided to
ensure safety during installation, maintenance
and inspection

The supply voltage may not exceed 30 V DC. The
supply circuit must be protected by a slow 200 mA
fuse. Only a CE-compliant power supply unit may
be used as a power supply.