CS Instruments VA 550 Ex User manual

EN –English
VA 550 Ex / VA570 Ex English V1.08 Page 1 of 10
Flow / Consumption Sensor
VA 550 Ex / VA 570 Ex
Ex-Documentation

Table of Content
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II. Table of Content
II. Table of Content ........................................................................................................ 2
Pictograms and Symbols ............................................................................................. 3
Area of application........................................................................................................ 4
Safety instructions........................................................................................................ 4
3.1 General saftey instructions................................................................................................... 4
3.2 Specific conditions ................................................................................................................ 4
3.3 Installation / Commissioning................................................................................................ 6
3.4 Name plate.............................................................................................................................. 6
3.5 Cable glands........................................................................................................................... 7
Connection diagram ..................................................................................................... 8
4.1 Potential equalization............................................................................................................ 8
Technical data............................................................................................................... 9
Repairs and calibration ................................................................................................ 9
6.1 Repair and Service................................................................................................................. 9
6.2 Calibrationg ............................................................................................................................ 9

Pictograms / Symbols
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Pictograms and Symbols
General Warning symbol (Danger, Warning, Caution)
General note
Installation- and Instruction manual to consider (on Nameplate)
Installation- and Instruction manual to consider
Hazardous area
Important notes for use in potentially explosive atmospheres

Safety instructions
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Area of application
This Ex-documentation contains special requirements for the use of flow / consumption sensors
VA 550 and VA 570 Ex Ex in gas hazardous areas which complement and modify the the
general requirements in the instruction manual.
Safety instructions
3.1 General saftey instructions
•Existing national regulations regarding installation, electrical installation, commissiong and
maintenance of equipment in hazardous areasmust be observed.
oATEX-Guideline 2014/34/EU (ATEX)
oUse of Work Equipment Directive 89/655/EEC
othe work safety regulations / safety rules
oany other relevant safety regulations (see also Declaration of Conformity the device)
•Installation, electrical installation, commissioning and maintenance of the equipment must be
carried out by qualified personnel, which is trained to work in hazardous areas.
•Connecting and disconnecting the electrical connections of the device only in strainless state
•All the technical data oft he syensor( see nameplate) must be strictly adhered.
•Opening of the sensor is allowed only in strainless state or in area free of explosive atmosphere.
•To ensure the dust-tightness the sensor housing is to be close firmly.
Warning
•When operating outside the performance data and use outside of the temperature range it may
result in malfunction of the product.
This means in the hazardous area Danger to life!
Therefore: The performance specifications and temperature ranges of the operating instructions
must be complied with.
3.2 Specific conditions

Safety instructions
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•The manual and the Ex documentation must be observed, in particular the provisions for
sufficient potential equalization and grounding and surge protection.
•Opening the housing in the hazardous area is possible in strainless state after a waiting period
of at least 5 minutes after switching off. The electrical connection is to be performed only in
strainless state of the sensor. Each aperture that was open is with the tightening torques
conditions laid down in the instruction manual to be closed and locked.
•The repair of the flameproof case of flow-/consumption sensor VA 550 Ex and VA 570 Ex
including the flameproof joints are not allowed.
•The type of ignition protection depends on the proper selection and installation of the cable
glands and the plugs. All openings must be provided with appropriate cable glands or sealing
plugs for unused openings. Only in accordance with the standards EN 60079-0, EN 60079-1 and
EN 6009-31 with a separate EC-type examination certificate certified cable glands and sealing
plugs are allowed to use. These cable glands and sealing plugs must be certified at least for a
temperature range of -20 ° C to + 95 ° C. The uused cable glands and sealing plugs must have a
thread in the size M20x1,5.The screw-in depth has to be min. 8mm
•The appliance must be used exclusively with the appropriate cable glands for harmonized
cables. These must be suitable for an operating temperature range of -20 ° C to + 95 ° C.

Installation / Commissioning
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3.3 Installation / Commissioning
•metal parts (housing and fixing material) are to be included in the potential equalization
•The use of the sensor is only allowed in the permissible temperture range of T4 (135°C) .
•Only certified cable glands (II 2 G Ex db IIC Gb / II 2 G Ex tb IIIC T90°C Db) are allowed to use.
•Turning or opening of the housing is allowed to perform only in strainless state and after a
waiting time of > 5 minutes after switching off the sensor.
•In hazardous areas, the requirements of IEC/EN 60079-14 Section 9 must be observed.
3.4 Name plate
1 Sensortype
2 Ordering No.
3 Serialnumber
4 max. Operatingtemperature oft he sensor, Power supply range, power consumption
5 CE Mark
6 Identification number of notified body
7 Ex mark
8 Year of first certification and report no of notified body report
9 Equipment group and catogory as per directive 2014/34/EU
10 WEEE-mark
11 Notes
12 CS Instruments GmbH & Co.KG Address und Logo
1
2
3
4
5
6 7 8 9 10
11
12
0123

Cable glands
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3.5 Cable glands
Warning
•Ignition protection minimum: II 2 G Ex db IIC T4 Gb
II 2 DEx tb IIIC T90°C Db
•Operating temperature range min: -20°C bis +95°C
•Connection thread: M20 × 1,5mm
•Tightening torque must be applied in accordance with the manufacturer's instructions.
•Tightness of the cable / conduit entries must be ensured, the associated seals shall be
installed directly on the casing.
•Unused cable entries must be closed with certified caps

Wiring
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Connection diagram
Specific conditions are to be observed!
•Before opening the housing for connection / wiring special conditions must be observed!
•General conditions of the pin assignment and wiring have to be observed in the user manual
4.1 Potential equalization
The sensors VA550 or VA570 are by using the outside screw terminal to integrate securely into the
potential equalization.
Pulse
12
I (4-20mA)
12
X1 X2 X3
X5
X4
I (4-20mA)
12
GND
VB+
1 2 3
Mod(A)
1 2 3 4
Pulse
DIR
Main Board
Mod(B)

Technical data
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Technical data
Typenbezeichnung: Flow-/ Consumption sensor VA 550 Ex bzw. 570 Ex
Ignition protection/Marking: II 2 G Ex db IIC T4 Gb
II 2 DEx tb IIIC T90°C Db
Conformity to standards: EN 60079-0:2018
EN 60079-1:2014
EN 60079-31:2014
Operating temperature range: -20°C bis +70°C
Permissible medium temperature range: -20°C bis +120°C
Voltage (nominal value) Un = 36 VDC
Power consumption (nominal value): Pn = 5 W
Repairs and calibration
6.1 Repair and Service
Defective VA550Ex / VA570Ex sensors must be sent to CS Instruments GmbH & Co.KG.
Spare parts cannot be provided for safety reasons..
6.2 Calibrationg
It is recommended to have the VA550Ex / VA570Ex sensors calibrated at regular intervals. The
calibration cycles should be based on your internal specification.

Contact
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Sales Office South/ Geschäftsstelle Süd/
Zindelsteiner Str. 15
D-78052 VS-Tannheim
Tel.: [phone]
Fax: [phone]
Mail: [email protected]
Web: http://www.cs-instruments.com
Sales Office North/ Geschäftsstelle Nord
Gewerbehof 14
D-24955 Harrislee
Tel.: [phone]
Fax: [phone]
Mail: [email protected]
Web: http://www.cs-instruments.com