Atex M5000 Series Instruction Manual

SAFETY PRECAUTIONS

You must read carefully all the instructions of this manual. You must not start the installation before taking these instructions into account.
This equipment might receive some hazardous voltages. If you do not consider these instructions, you risk facing serious corporal and/or
material injuries.
Before setting up your installation, check the model suit your application. The wiring of this equipment must be executed with the in force
rules by a qualified staff.
1

GENERAL WARNINGS

1.1
PREMISE
Before installation of the instruments follow the recommendations listed in European normative EN 837-2.
In particular is necessary to check if:
- Required security level is compatible with the safety markings indicated on instrument dial.
- Process fluid is compatible with wetted parts indicated on instrument dial.
WARNING :
When instrument is installed on dangerous fluids like oxygen, acetylene, or fluids that are inflammables or toxics or dangerous for the
environment, please check carefully that instrument is suitable for these applications.
Especially for use with oxygen the instrument dial must show the word "OXYGEN" and the international symbol of "Oil-free". Pressure
gauges must not come in contact with oils or greases not compatibles with oxygen.
In the event of installation in potentially explosives atmospheres, the instrument dial must show the markings foreseen from ATEX
94/9/EC directive. Installation is possible only following the rules foreseen.
1.2
NOTES ON APPLICABILITY OF PRESSURE DEVICES DIRECTIVE (PED 97/23/CE)
Georgin pressure gauges M5000 are considered "pressure accessories", according art. 1 clause 1.2.4.
Instruments with static pressure higher than 200 bar are manufactured according A module of the directive and must have CE logo on dial.
Instruments with static pressure lower than 200 bar must not be marked with CE logo but are manufactured according to art. 3 clause 3 "sound
engineering practice" (SEP).
1.3
INSTRUMENT MEASURING RANGE
Verify that measuring range of instrument is suitable with working conditions of the pressure circuit/plant. Normal operating pressure must be:
- Within 75 % of dial range for steady pressures
- Within 60 % of dial range for pulsating pressures
The choice of non-suitable range, or not suitable model, or non-suitable installation, causes not proper functioning and shorter working life of
instrument.
1.4
ADMITTED OVER PRESSURES
Accidental over pressures are admitted for short periods, provided that they remain within the values indicated in the catalogue.
1.5
AMBIENT TEMPERATURE
Instruments are designed to work with an ambient temperature between -40°C/+60°C (-40°F/+140°F). It is recommended to verify that the pressure
gauge installation position is not subject to direct heat sources, both for convention or radiation: if this is not possible, please foresee a protective
screen. Temperature variations of sensing element, compared with reference temperature, cause indications drift (accuracy errors) lower than ±0.4 % of
read value, every 10 °C of ambient temperature variation.
1.6
PROCESS FLUID TEMPERATURE
Instruments are designed to work with a process fluid temperature within -40°C/+200°C (-40°F/+392°F).
If instrument is filled with dampening fluid, maximum temperatures admitted of process fluid, are indicated in table1.
In event of installations on steam, we recommend to follow installation sketches of Figure 1 and suggestions indicated in paragraph 2.3.
1.7
MECHANICAL VIBRATIONS
Verify that chosen position for the installation is not subjected to continuous mechanical vibrations, because this will cause accuracy errors and shorter
working life of instrument. If this is not possible, it is recommended to use instruments filled with dampening liquid.
1.8
PULSATING PRESSURES
In the event that instrument is subjected to pulsating pressures, please foresee a dampening protection, like mechanical dampeners (screw type or
porous disc type) or restriction screw inserted into the socket. These accessories are available upon request.
1.9
Installation IN POTENTIALLY EXPLOSIVE ATMOSPHERES (GAS AND DUST)
The instrument can be installed in potentially explosives atmospheres only if on dial are indicated the markings showed on figure 1. The temperature
classification of the instrument depends only from the working conditions (maximum ambient and process fluid temperature). The differential pressure
gauges series M5000does not contain any potential ignition source
Figure 1 – Dial marking
II 2 GD c
ATEX INSTRUCTIONS MANUAL
Pressure gauges
(complement to the mounting/setting leaflet)
M5000 ... Series
Ambient temperature
-40/+60°C
Régulateurs GEORGIN
14-16 rue Pierre Sémard – BP 107 – 92323 CHATILLON cedex France
Tel. : 33 (0)1 46 12 60 00 – Fax : 33 (0)1 47 35 93 98 – E-mail : regulateurs@georgin.com
Max process temperature
Liquid filled
Dry
Glycerine Silicon oil
60°C 60°C 60°C
85°C 85°C 85°C
110°C 100°C 100°C
175°C 100°C 175°C
200°C 100°C 200°C
200°C 100°C 200°C
Temperature class
Gas Dust
T6 T85°C
T5 T100°C
T4 T135°C
T3 T200°C
T2 T300°C
T1 T450°C
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