GEM 127 Series Manuel utilisateur
GEMÜ 127x
Instrument sensor
Operating instructions
EN
further information
webcode: GW-127x
All rights including copyrights or industrial property rights are expressly reserved.
Keep the document for future reference.
© GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG
22.10.2019
www.gemu-group.com2 / 20GEMÜ 127x
Contents
1 General information ................................................... 4
1.1 Information ......................................................... 4
1.2 Symbols used ..................................................... 4
1.3 Warning notes .................................................... 4
2 Safety information .................................................... 5
3 Manufacturer's information ....................................... 5
3.1 Delivery ............................................................... 5
3.2 Transport ............................................................ 5
3.3 Packaging ........................................................... 5
3.4 Storage ............................................................... 5
4 Product description ................................................... 5
4.1 Construction ....................................................... 5
4.2 Function .............................................................. 6
4.2.1 GEMÜ 1270 / 1271 function ................. 6
4.2.2 GEMÜ 1272 / 1273 function ................. 6
4.3 GEMÜ CONEXO ................................................... 6
4.4 Product label ...................................................... 6
5 Correct use ................................................................ 6
6 Product line ............................................................... 7
7 Availability ................................................................ 8
8 Order data GEMÜ 1270, 1272 .................................... 9
9 Order data GEMÜ 1271, 1273 .................................... 10
10 Technical data ........................................................... 11
10.1 Mechanical data ................................................. 11
10.2 Electrical data ..................................................... 11
11 Dimensions ............................................................... 12
12 Assembly ................................................................. 13
13 Electrical connection ................................................. 14
13.1 Inserting the cable .............................................. 14
13.2 GEMÜ 1270 / 1271 electrical connection ......... 14
13.3 GEMÜ 1272 / 1273 electrical connection ......... 14
13.4 Mounting the plug .............................................. 14
14 Commissioning ......................................................... 15
14.1 Adjustment of the instrument sensors ............. 15
14.2 Commissioning the flowmeter .......................... 15
15 Operation .................................................................. 15
16 Maintenance ............................................................. 15
16.1 Inspection ........................................................... 15
16.2 Spare parts ......................................................... 15
17 Troubleshooting ........................................................ 16
18 Disposal .................................................................... 17
19 Returns ..................................................................... 17
20 Declaration of conformity according to 2014/35/EU
(Low Voltage Directive) ............................................. 18
GEMÜ 127xwww.gemu-group.com 3 / 20
www.gemu-group.com4 / 20GEMÜ 127x
1 General information
1 General information
1.1 Information
– The descriptions and instructions apply to the stand-
ard versions. For special versions not described in this
document the basic information contained herein ap-
plies in combination with any additional special docu-
mentation.
– Correct installation, operation, maintenance and repair
work ensure faultless operation of the product.
– Should there be any doubts or misunderstandings, the
German version is the authoritative document.
– Contact us at the address on the last page for staff
training information.
1.2 Symbols used
The following symbols are used in this document:
Symbol Meaning
Tasks to be performed
Response(s) to tasks
– Lists
1.3 Warning notes
Wherever possible, warning notes are organised according to
the following scheme:
SIGNAL WORD
Type and source of the danger
Possible
symbol for the
specific
danger
Possible consequences of non-observance.
Measures for avoiding danger.
Warning notes are always marked with a signal word and
sometimes also with a symbol for the specific danger.
The following signal words and danger levels are used:
DANGER
Imminent danger!
▶Non-observance can cause death or
severe injury.
WARNING
Potentially dangerous situation!
▶Non-observance can cause death or
severe injury.
CAUTION
Potentially dangerous situation!
▶Non-observance can cause moderate
to light injury.
NOTICE
Potentially dangerous situation!
▶Non-observance can cause damage to
property.
The following symbols for the specific dangers can be used
within a warning note:
Symbol Meaning
Risk of electric shock
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2 Safety information
The safety information in this document refers only to an in-
dividual product. Potentially dangerous conditions can arise
in combination with other plant components, which need to
be considered on the basis of a risk analysis. The operator is
responsible for the production of the risk analysis and for
compliance with the resulting precautionary measures and
regional safety regulations.
The document contains fundamental safety information that
must be observed during commissioning, operation and
maintenance. Non-compliance with these instructions may
cause:
– Personal hazard due to electrical, mechanical and
chemical effects.
– Hazard to nearby equipment.
– Failure of important functions.
– Hazard to the environment due to the leakage of dan-
gerous materials.
The safety information does not take into account:
– Unexpected incidents and events, which may occur
during installation, operation and maintenance.
– Local safety regulations which must be adhered to by
the operator and by any additional installation person-
nel.
Prior to commissioning:
1. Transport and store the product correctly.
2. Do not paint the bolts and plastic parts of the product.
3. Carry out installation and commissioning using trained
personnel.
4. Provide adequate training for installation and operating
personnel.
5. Ensure that the contents of the document have been fully
understood by the responsible personnel.
6. Define the areas of responsibility.
7. Observe the safety data sheets.
8. Observe the safety regulations for the media used.
During operation:
9. Keep this document available at the place of use.
10. Observe the safety information.
11. Operate the product in accordance with this document.
12. Operate the product in accordance with the specifica-
tions.
13. Maintain the product correctly.
14. Do not carry out any maintenance work and repairs not
described in this document without consulting the manu-
facturer first.
In cases of uncertainty:
15. Consult the nearest GEMÜ sales office.
3 Manufacturer's information
3.1 Delivery
●Check that all parts are present and check for any dam-
age immediately upon receipt.
The product's performance is tested at the factory. The
scope of delivery is apparent from the dispatch documents
and the design from the order number.
3.2 Transport
1. Only transport the product by suitable means. Do not
drop. Handle carefully.
2. Avoid knocks and vibration.
3. Dispose of transport packing materials according to rel-
evant local or national disposal regulations/environ-
mental protection laws after installation.
3.3 Packaging
The product is packed in a cardboard box which can be re-
cycled as paper.
3.4 Storage
1. Store the product free from dust and moisture in its ori-
ginal packaging.
2. Avoid UV rays and direct sunlight.
3. Do not exceed the maximum storage temperature (see
chapter "Technical data").
4. Do not store solvents, chemicals, acids, fuels or similar
fluids in the same room as GEMÜ products and their
spare parts.
5. Store the product with the connections blocked off.
4 Product description
4.1 Construction
Fig.1: Main components of instrument sensor
Item Name
1 Instrument sensor
2 Plug
3 Locking screw
4 Product description
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5 Correct use
4.2 Function
Fig.2: Instrument sensor operating principle
The float in the flowmeter, which is equipped with a perman-
ent magnet, is pushed past the instrument sensor by the
flow. The instrument sensor is equipped with a reed contact
chain. This enables reading out the float position.
4.2.1 GEMÜ 1270 / 1271 function
The GEMÜ 1270 / 1271 instrument sensors output the meas-
ured values as a voltage signal via a voltage divider (Rg = 10
kΩ).
4.2.2 GEMÜ 1272 / 1273 function
The GEMÜ 1272 / 1273 instrument sensors output the meas-
ured values as a 2-wire current signal 4 - 20 mA. This signal
can be directly processed.
4.3 GEMÜ CONEXO
The interaction of valve components that are equipped with
RFID chips and an associated IT infrastructure actively in-
crease process reliability.
Thanks to serialization, every valve and every relevant valve
component such as the body, actuator or diaphragm, and
even automation components, can be clearly traced and read
using the CONEXO pen RFID reader. The CONEXO app, which
can be installed on mobile devices, not only facilitates and
improves the "installation qualification" process, but also
makes the maintenance process much more transparent and
easier to document. The app actively guides the maintenance
technician through the maintenance schedule and directly
provides him with all the information assigned to the valve,
such as test reports, testing documentation and mainten-
ance histories. The CONEXO portal acts as a central element,
helping to collect, manage and process all data.
For further information on GEMÜ CONEXO please visit:
www.gemu-group.com/conexo
In the corresponding design with CONEXO, this product has
an RFID chip (1) for electronic recognition. The position of
the RFID chip can be seen below.
Installing the RFID chip
RFID chip
4.4 Product label
Device version Design in accordance with order data
Item number Traceability number Serial number
Device-specific data
Year of manufacture
The manufacturing month is coded under the traceability
number and can be requested from GEMÜ. The product was
manufactured in Germany.
5 Correct use
WARNING
Improper use of the product!
▶Risk of severe injury or death.
▶Manufacturer liability and guarantee will be void.
●Only use the product in accordance with the operating
conditions specified in the contract documentation and
this document.
The products must:
– only be used for measuring the flowmeters of the
GEMÜ 800, GEMÜ 840 and GEMÜ 850 series.
– only be operated within the performance limits.
– not be modified from a constructional point of view.
The product is not intended for use in potentially explosive
areas.
6 Product line
GEMÜ 1270 GEMÜ 1271 GEMÜ 1272 GEMÜ 1273
Metering
length [mm]
230 118 / 147 210 118 / 125
Number of switch
points
55 / 100 35 / 43 55 / 100 35 / 43
Distance of reed
contacts [mm]
4.25 / 2.30 3.50 / 2.30 4.25 / 2.30 3.50
2-wire measuring
transducer
No No Yes Yes
Voltage divider Yes Yes No No
GEMÜ 127xwww.gemu-group.com 7 / 20
6 Product line
7 Availability
GEMÜ 1270, 1272
Type DN Order code
Flowmeter series 800
811 20 - 65 25
815 20 - 65 25
816 20 - 65 25
817 20 - 65 25
830 20 - 65 25
831 20 - 65 25
832 20 - 65 25
833 20 - 65 25
835 20 - 65 25
GEMÜ 1271, 1273
Type DN Order code
Flowmeter series 840
841 15 10
846 15 10
Flowmeter series 850
861 10 - 20 10
865 10 - 20 10
867 10 - 20 10
880 10 - 20 10
883 10 - 20 10
885 10 - 20 10
861 25 25
865 25 25
867 25 25
880 25 25
883 25 25
885 25 25
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8 / 20
GEMÜ 127x
7 Availability
8 Order data GEMÜ 1270, 1272
Order codes
1 Type Code
Instrument sensor for variable area flowmeter 1270
Instrument sensor for variable area flowmeter 1272
2 Fieldbus Code
Without 000
3 Accessory Code
Accessory Z
4 Series Code
Series 800,
DN 20 - DN 65
25
5 Resolution Code
55 contacts 01
100 contacts 03
6 CONEXO Code
without
Integrated RFID chip for electronic identification
and traceability
C
Order example
Order option Code Description
1 Type 1270 Instrument sensor for variable area flowmeter
2 Fieldbus 000 Without
3 Accessory Z Accessory
4 Series 25 Series 800,
DN 20 - DN 65
5 Resolution 01 55 contacts
6 CONEXO without
8 Order data GEMÜ 1270, 1272
www.gemu-group.com 9 / 20 GEMÜ 127x
9 Order data GEMÜ 1271, 1273
The order data provide an overview of standard configurations.
Please check the availability before ordering. Other configurations available on request.
Order codes
1 Type Code
Instrument sensor
for variable area flowmeter
1271
Instrument sensor
for variable area flowmeter
1273
2 Fieldbus Code
without 000
3 Accessory Code
Accessory Z
4 Series Code
Series 850,
DN 10 - DN 20
10
4 Series Code
Series 850,
DN 25
25
5 Resolution Code
35 contacts,
GEMÜ 865, 867, 880, 885 DN 10 - DN 20
43 contacts,
GEMÜ 865, 867, 880, 885 DN 25
01
100 contacts 03
6 CONEXO Code
without
Integrated RFID chip for electronic identification
and traceability
C
Order codes
Order option Code Description
1 Type 1271 Instrument sensor
for variable area flowmeter
2 Fieldbus 000 without
3 Accessory Z Accessory
4 Series 10 Series 850,
DN 10 - DN 20
5 Resolution 01 35 contacts,
GEMÜ 865, 867, 880, 885 DN 10 - DN 20
43 contacts,
GEMÜ 865, 867, 880, 885 DN 25
6 CONEXO without
Integrated RFID chip for electronic identification and traceability
9 Order data GEMÜ 1271, 1273
www.gemu-group.com
10 / 20
GEMÜ 127x
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