Beck 930.83 EX, 930.80 EX, 930.84 EX, 930.86 EX, 930.87 EX Operating Instruction

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Beck GmbH Druckkontrolltechnik Ferdinand-Steinbeis-Straße 4 71144 Steinenbronn

Operating Instructions

The adjustable

Differential Pressure Switches

Model 930...EX

060925-BA-930-R9-2016_englisch_Druckversion.doc

Ident:

Operating instructions – Pressure Switch - Model-930...EX Rev.9

Page 1 of 18

Page 2

General Instructions

Safety Instructions

Beck GmbH Druckkontrolltechnik Ferdinand-Steinbeis-Straße 4 71144 Steinenbronn

1 General instructions ............................................................................................................... 3

1.1 Safety instructions .............................................................................................................. 3

1.1.1 General safety instructions ........................................................................................................... 3

1.1.2 Safety instructions for potentially explosive areas ........................................................................ 4

1.1.3 Notes on environmental protection ............................................................................................... 4

2 Correct purpose of use .......................................................................................................... 5

2.1 Application area .................................................................................................................. 5

2.2 CE conformity ..................................................................................................................... 5

3 Storage and transportation .................................................................................................... 6

3.1 Packaging .......................................................................................................................... 6

3.2 Storage and transportation conditions ................................................................................ 6

4 Installation ............................................................................................................................... 6

4.1 Installation .......................................................................................................................... 7

4.2 Connection ......................................................................................................................... 7

4.2.1 Pressure connections ................................................................................................................... 7

4.2.2 Electrical connections ................................................................................................................... 7

5 Start-up .................................................................................................................................... 9

5.1 Parameterisation ................................................................................................................ 9

6 Maintenance / service ........................................................................................................... 10

6.1 Time intervals ................................................................................................................... 10

6.2 Troubleshooting ................................................................................................................ 10

7 Repairs .................................................................................................................................. 11

8 Dismantling ........................................................................................................................... 11

8.1 Disposal ........................................................................................................................... 12

9 Appendix ............................................................................................................................... 13

9.1 Technical data and dimensioned drawing ......................................................................... 13

9.2 Dimensioned drawings and accessories ........................................................................... 15

9.3 Declaration of Conformity ................................................................................................. 16

9.4 EC design test certification ............................................................................................... 17

9.5 Proof of compliance with explosion protection regulations ................................................ 18

Telephone Telefax E-Mail Internet

VAT-no.

Operating instructions – Pressure Switch - Model-930...EX Rev.9

+49 7157 52 87-0 +49 7157 52 87-83 [email protected] http://www.beck-sensors.com

DE162391354

Bank Accounts

Kreissparkasse Esslingen-Nürtingen (BLZ 611 500 20) 57 011 970 S.W.I.F.T. ESSLDE66 IBAN: DE33 6115 0020 0057 0119 70 Commerzbank Stuttgart (BLZ 600 400 71) 876 179 300 S.W.I.F.T. COBADEFF600 IBAN: DE70 6004 0071 0876 1793 00 Landesbank Baden-Württemberg (BLZ 600 501 01) 2 214 306 S.W.I.F.T. SOLADEST IBAN: DE36 6005 0101 0002 2143 06 UniCredit Bank - HypoVereinsbank Stuttgart (BLZ 600 202 90) 388 773 332 S.W.I.F.T. HYVEDEMM473 IBAN: DE66 6002 0290 0388 7733 32

Location: Steinenbronn Amtsgericht Böblingen HRB 6050 Managing Directors: Rainer Beck, Hans-Peter Funk, Dr. Ernst Thielicke

Page 2 of 18

Page 3

General Instructions

Safety Instructions

Beck GmbH Druckkontrolltechnik Ferdinand-Steinbeis-Straße 4 71144 Steinenbronn

1 General Instructions

These operating instructions contain all of the information that is required for an efficient start-up and safe operation of Model 930...EX pressure switches.



Please read these operating instructions before carrying out installations, start-ups, maintenance and repairs.

 Please ensure that these operating instructions are available at all times.  Please follow the applicable instructions and safety regulations.  All of the work that is described in these operating instructions must be carried out by quali-

fied and authorised experts.

 In order to avoid problems, the prescribed maintenance must be carried out at regular in-

tervals by appropriately trained personnel.

Symbols used

The meanings of the symbols that are used are as follows:



Useful, important additional information.



Dangers and safety instructions. Important – please read! Failure to comply with these instructions can have a detrimental effect on persons and the operation of the equipment.

 Important instructions for use in potentially explosive areas.

Danger – please read!

1.1 Safety Instructions

1.1.1 General safety instructions



Please follow the applicable

 Instructions and system-specific regulations (e.g. installation

standards etc.)

 Safety regulations and accident prevention regulations



All work must be carried out by authorised and qualified personnel. These qualifications and authorisations include:

 Training, experience and knowledge of the regulations, standards  Only personnel with appropriate product knowledge must carry out start-ups and

maintenance

 All repairs must be carried out by personnel who have been authorised to do so by

the manufacturer

 Only original parts must be used  Ignoring these operating instructions and making modifications to the equipment are not

permitted and can lead to hazardous situations

Operating instructions – Pressure Switch - Model-930...EX Rev.9

Page 3 of 18

Page 4

General Instructions

Safety Instructions

Beck GmbH Druckkontrolltechnik Ferdinand-Steinbeis-Straße 4 71144 Steinenbronn

1.1.2 Safety instructions for potentially explosive areas

 The 930..EX pressure switch is suitable for use in areas where there

is a risk of gas or dust explosion



Please follow the applicable

 Instructions and system-specific regulations

 The labelling of the product must point out that important explosion protection characteris-

tics must be adhered to during use.

 G = Gas; D = Dust  Device category 1, 2, 3 or Equipment Protection Level EPL in the 3 zonal areas



Gas parameters: temperature class (T1…T6), explosion group (A, B, C)

 Dust parameters: Explosion group (IIIA, B: non-conductive; IIIC: conductive);  Surface temperature, glow and ignition temperature

 When work is being performed such as installation, making electrical connections, making

repairs or opening the housing, it must be ensured that

 no potentially explosive atmosphere is present  no electrical voltage is present  unintentional activation is ruled out



Dust deposits must be avoided (installation location, protection, cleaning etc.) in order to prevent dangerous surface temperature increases



For the installation procedure it is necessary to take care that no electrostatic charging will be done (no high volume flow, cleaning only with damp cloth,…)



It must be ensured that all technical and organisational protective measures are complied with and that the operation and effectiveness thereof is checked



No modifications must be made to the equipment, since they may lead to a risk of explosion (ignition)



The specifications of the EC design certificate are binding and must be complied with



If the number of the EC design certificate is followed by an “X”, special conditions or deviations from the standard conditions exist



Installation, start-ups and repeated testing may only be carried out by appropriately qualified personnel



The operator must issue a release for work before any activity (installation etc.) is carried out in potentially explosive areas.

1.1.3 Notes on environmental protection

Please help to protect the environment. Please pay attention to the environmental notes in these operating instructions:



Chapter 3.1 “Storage“: Handling of packaging materials

 Chapter 8.1 “Disposal“: with regard to the product and its components

Operating instructions – Pressure Switch - Model-930...EX Rev.9

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Page 5

Correct Purpose of Use

Application area

Beck GmbH Druckkontrolltechnik Ferdinand-Steinbeis-Straße 4 71144 Steinenbronn

2 Correct Purpose of Use

2.1 Application area



Purpose of use

The adjustable differential pressure switches have the following main purpose



Monitoring air flow in ventilation shafts for adequate



Operational monitoring by monitoring the air flow of



Liquid level monitoring

The media that are being monitored occur in the following different phases

 Gaseous (main application)  Liquid

 Use in zones in potentially explosive areas

Pressure switches are used to monitor the pressure difference in areas of closed systems where there is a risk of gas explosion.

 The device may be used in areas where there is a risk of gas or dust explosion



Two separate zonal areas can be connected via pressure connections P1 and P2 (areas 1 and 2)

 Zone 1,2 or zone 21,22 may apply to the pressure connections (areas 1 and 2)  The surroundings (area 3) can be zone 1,2 or zone 21,22

Area-1

Zone 1,2 Zone 1,2 Zone 1,2

Zone 21,22 Zone 21,22 Zone 21,22

 Dilution of gasses that are hazardous to health or potentially explosive  Air supply (fresh air) and/or exhaust air – extraction of “bad” air

 (Air) filters



Air and fire safety flaps

 Fans, ventilators  Leak tightness of closed systems

 Potentially explosive gasses and dust (natural gas, bio-gas, solvents etc.)  Flammable liquids (petrol, solvent etc.)

Area-2

Surrounding

Area-3

Equipment

category

1 G,D Ga,Da

2 G, D Gb,Db

3 G,D Gc ;Dc

max1

5mm

: T

max2

= T

Equipment Pro-

tection Level

EPL

= 2/3 TCL

– 75oC

5mm

Zone

20 1 21 2 22

yes yes yes

no yes yes no no yes

Operating instructions – Pressure Switch - Model-930...EX Rev.9

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Page 7

Installation

Beck GmbH Druckkontrolltechnik Ferdinand-Steinbeis-Straße 4 71144 Steinenbronn

The following standards and directives are useful:



EN 1127-1: Explosion protection – basic concepts and methodology

Standards for areas with risk of gas or dust explosion (“G”, “D”):



EN 60079-10: Classification of potentially explosive areas



EN 60079-14: Electrical installations in potentially explosive areas



EN 60079-17: Inspection and maintenance

 EN 60079-25: Intrinsically safe systems

4.1 Installation

Choose the installation location from the following aspects;

 Ease of access for installation, connection and operation  Protection from direct effects of the weather, such as rain and sun  The IP protection class of the equipment must suit the ambient conditions  In order to prevent dangerous temperature increases on the surface of the equipment, dust

deposits must be avoided (installation location, protective cover, cleaning measures etc.)

 Switching pressure specifications apply to vertical installation which is also the recommended

position with pressure-pipe connections pointing downwards. If the switches are installed horizontally with AMP connection terminals uppermost, the switching values are approx. 20 Pa higher.

4.2 Connection

4.2.1 Pressure connections

2 plastic pipe connection pieces (6 mm)

 P1 +: for connection to higher pressure  P2 -: for connection to lower pressure

4.2.2 Electrical connections

 When work is being performed such as installation, making electrical

connection, making repairs or opening the housing, it must be ensured that

 No electrical voltage is present  Unintentional activation is not possible



Proceed as follows in potentially explosive areas:



Check whether the equipment category corresponds with the

specified zones

 No potentially explosive atmosphere is present  A release for work must have been issued by the operator  Adherence to the applicable regulations and documentation for the equipment



Special notes for intrinsically safe (“i”) systems:

 Each intrinsically safe operating material must have an associated operating mate-

rial inserted before it, outside of the potentially explosive zone.

 Separate cable routing for intrinsically safe and non-intrinsically safe power circuits.



For operating voltages of less than 42V AC or 60V AC: Intrinsically safe and nonintrinsically safe power circuits can be routed together in this case. This only applies to safety barrier with galvanic separation.



Separation of intrinsically safe/non-intrinsically safe connecting parts: at least 50mm (tight string length)



Distance between different intrinsically safe power circuits: at least 6mm



Distances between non-insulated conductive parts leading to connecting parts: air gap of at least 3mm (housing-terminals-conductor tracks, earth etc.)

Operating instructions – Pressure Switch - Model-930...EX Rev.9

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Page 8

Installation

Connection

 Power supply

 Each intrinsically safe operating material must have an associated

operating material inserted before it, outside of the potentially explosive zone:



Pay attention to maximum characteristics (U, I, P, L, C): Compare the information on the specification plate of the appropriate equipment and the pressure switch 930..EX

 Select connecting cables

The following points must be observed when selecting the cable:

 Select cable material that complies with the local resistance

requirements (mechanical, chemical)

 The outer diameter may be from 5 to 9 mm  Cable cross-section in accordance with electrical power and data sheet

The following points must be observed when selecting cables for intrinsically safe power circuits:

 Diameter of individual conductors: greater than 0.1mm  Insulation strength of the individual wires: greater than 0.2 mm  Test voltage for intrinsically safe cables:

- between wires, shield and earth: 500V AC

 Shield: The shield area must be 60% of the surface coverage or twisting  Labelling of intrinsically safe power circuits: colour preferably light blue  L and C cable characteristics must be available

Beck GmbH Druckkontrolltechnik Ferdinand-Steinbeis-Straße 4 71144 Steinenbronn

(Ci=110nF/km; Li=1 mH/km)

 Cable routing

 If there is a risk of mechanical damage, the cable must be provided with additional

protection (protective tube etc.)

 The cable diameter must be complied with in order to provide a tight connection in

the cable lead-in.

 The screwed cable connection and the screws of the housing cover must be tight-

ened in order to comply with the IP protection class. Over-tightening damages the housing.



Connecting the cable

 Please ensure that the cables that are being connected are not live.

otherwise there is a risk of igniting a potentially explosive atmosphere

 Attach the shield

 Attach shield at one end (in non-potentially explosive area)  Attach braiding of shield to earth potential over a wide area.  No potential equalisation current must be flowing between potentially

explosive areas and non-potentially explosive areas. Separation using a capacitor is permitted in this case for EMC purposes (total max. 10 nF).



Earthing

 The external earthing terminal on the housing must be connected

 No potential equalisation current must be flowing between potentially explosive are-  Minimum cross-section: 2 x 1.5 mm² or 1 x 4 mm²

 Intrinsically safe power circuits: Housings made from metal do not need to be

to the potential equalisation of the potentially explosive area with low resistance

(removal of electrostatic charge between 0.2-1 MOhms is considered to be earthing)

as and non-potentially explosive areas

earthed.

(If this is necessary anyway – functional earthing, earthing in one location only…)

Operating instructions – Pressure Switch - Model-930...EX Rev.9

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from

Start-up

Parameterisation

Beck GmbH Druckkontrolltechnik Ferdinand-Steinbeis-Straße 4 71144 Steinenbronn

 Documentation

 Operating instructions, conformity declaration, EC design test certificate  System and zonal plan  Proof of adherence to explosion protection regulations (see Appendix 9.34)



Equipment selection: category, Equipment Protection Level EPL, temperature

class, explosion group, …

 Proof of adherence to intrinsic safety requirements

5 Start-up

Before voltage is applied to the equipment the following checks must be performed:

 Check that screws are firmly seated in

 Connecting terminals, protective earth conductor terminals and

potential equalisation terminals

 Housing cover

 Check

 The torque of the cable lead-in  The tightness of the seal provided by the cable lead-in

 Check whether the equipment is ready for operation

 The parameterisation for this application must have been performed  All interfaces such as inputs and outputs for control purposes must be connected

and ready for operation

5.1 Parameterisation

Equipment parameterisation

 Define all application-specific parameters.  Adjustment of the pressure ranges

 With this pressure switch the pressure can be adjusted without a pressure gauge using a

scaled adjustment knob

 The switching differential can also be adjusted with a screwdriver by the adjustment screw

with the identification “-∆p+”

Type Adjustment range

for trip pressure

930.80 EX

930.83 EX

930.84 EX

930.85 EX

930.86 EX

20 300 Pa 10 Pa ±15 %

50 500 Pa 20 Pa ±15 %

30 400 Pa 15 Pa ±15 %

200 1000 Pa 100 Pa ±15 %

500 2500 Pa 150 Pa ±15 %

Switching

differential

Tolerance

band of

930.87 EX

Note: Switching pressure specifications apply to vertical installation which is also the recommended position with pressure-pipe connections pointing downwards. If the switches are installed horizontally with AMP connection terminals uppermost, the switching values are approx. 20 Pa higher.

1000 5000 Pa 250 Pa ±15 %

 Once the power supply is applied, the equipment is ready for operation immediately.

Operating instructions – Pressure Switch - Model-930...EX Rev.9

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Page 10

Maintenance / Service

Time intervals

Beck GmbH Druckkontrolltechnik Ferdinand-Steinbeis-Straße 4 71144 Steinenbronn

6 Maintenance / Service

The equipment can only be guaranteed to operate safely and reliably in the long term if regular inspections and servicing are carried out. These include the following:

For cleaning the devices it is necessary to take care that no electrostatic charging will be done (no high volume flow, cleaning only with damp cloth,…)

An inspection includes

 Visual inspection

o Mechanical damage o Non-permitted dust deposits o Other irregularities or error messages from the equipment

 Checking of components (wearing parts) whose functionality or purpose changes and af-

fects the operation of the equipment

 Documentation of what was done by whom, and when

Maintenance includes

 Functionality checking

o Operating statuses such as alarms etc.

 Checking calibration values (= calibration)

o Triggering of alarms by known process parameters (test pressure etc.)

 Correction of calibration values (= calibration) must be carried out in the factory  Documentation of what was done by whom, and when

6.1 Time intervals

Inspection:

The condition of the equipment must be checked at regular intervals. The time interval is extremely dependent on the local situation and the degree of use, and must therefore be adapted to requirements. Extremely short time intervals can be specified such as once per day, every new shift etc.

 Defined by the operator in accordance with local requirements

Maintenance

 The interval from the applicable usage regulations must be taken into consideration  As a manufacturer we recommend a maximum interval of 1 year

6.2 Troubleshooting

A list of possible faults (fault indications) can be found in the table below. The table contains an explanation of how to detect faults. A list of possible causes and remedial measures also follows.

Fault indication

Contact won’t switch

Defective diaphragm Spring defective

Possible cause

Pressure connection blocked Pressure outside working range

Measures

Replace pressure switch

Operating instructions – Pressure Switch - Model-930...EX Rev.9

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Repairs

Troubleshooting

Beck GmbH Druckkontrolltechnik Ferdinand-Steinbeis-Straße 4 71144 Steinenbronn

7 Repairs

The following points must be noted before carrying out any work whatsoever on the equipment:

 When work is being performed such as installation, making electrical

connections or opening the housing, it must be ensured that

 No electrical voltage is present



Unintentional activation is not possible



Repairs must only be carried out by the manufacturer



The following must be observed in potentially explosive areas:

 No potentially explosive atmosphere is present  A release for work must have been issued by the operator  The applicable regulations and all documentation for this

equipment must be adhered to

 Only original spare parts from the manufacturer must be used



The spare parts must comply with the required equipment category

 Interventions that influence explosion protection must only be carried out by experts

A prerequisite is adequate qualification (“capable person”) with regard to explosion protection and the use of the equipment

8 Dismantling

The following points must be noted before carrying out any work whatsoever on the equipment:



Ensure that the equipment may be removed and that appropriate replacement measures have been taken. All of the instructions in chapter 7 “

Operating instructions – Pressure Switch - Model-930...EX Rev.9

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Page 12

Dismantling

Disposal

Repairs



Exposed cable (ends) must be marked, and it must be ensured that

” must be followed

Beck GmbH Druckkontrolltechnik Ferdinand-Steinbeis-Straße 4 71144 Steinenbronn

 No electrical voltage is present  Unintentional activation is not possible

8.1 Disposal

The equipment is made from recyclable materials and is designed to make the housing and the electronics easy to separate. Please ensure that all parts are disposed of in accordance with legal regulations. Please contact us if you cannot dispose of the equipment properly.

Operating instructions – Pressure Switch - Model-930...EX Rev.9

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Page 13

Appendix

Technical data and dimensioned drawing

9 Appendix

9.1 Technical data and dimensioned drawing

Temperature ranges

Ambient temperature:

 from -20 °C to +85 °C

Medium temperature:



up to +85 °C

Storage temperature:

 from -40 °C to +85 °C

Diaphragm material

Silicone; others upon request.

Electrical rating

Values indicated for resistive load

 for Gas 2G : 60 mA/30 VDC oder 100 mA/24 VDC  for Dust 2D: 30V; 60mA ; 0.6W

Beck GmbH Druckkontrolltechnik Ferdinand-Steinbeis-Straße 4 71144 Steinenbronn

Electrical connection

 Cable conduit M20x1.5 or cap nut conduit with cable strain relief  AMP flat plug 6.3 mm x 0.8 mm in accordance with DIN 46244 or push-on screw terminals  Arrangement of contacts

1 Brake contact 2 Operating contact 3 Power supply line

Protection category



IP 54

(with Cover)

Weight



150 g

Certifications

CE conformity in according with EC explosion protection directive 2014/34/EU. EC design test certification by the specified EXAM body (ID 0158) with the following ATEX labelling:

 2G Ex ia IIB T4 Gb  2D Ex ia IIIB T135oC Db

Characteristics:

 2G : 60 mA/30 VDC oder 100 mA/24 VDC  2D : 30V; 60mA ; 0.6W



Li = 0 mH; Ci = 0 nF

Life

Minimum 106 cycles.

Housing materials



Switch body made of PA 6.6 Cover made of PS



Operating instructions – Pressure Switch - Model-930...EX Rev.9

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Page 14

Appendix

Technical data and dimensioned drawing

Types / Pressure ranges

Beck GmbH Druckkontrolltechnik Ferdinand-Steinbeis-Straße 4 71144 Steinenbronn

Type Adjustment range

for trip pressure

930.80 EX

930.83 EX

930.84 EX

930.85 EX

930.86 EX

930.87 EX

20 300 Pa 10 Pa ±15 %

50 500 Pa 20 Pa ±15 %

30 400 Pa 15 Pa ±15 %

200 1000 Pa 100 Pa ±15 %

500 2500 Pa 150 Pa ±15 %

1000 5000 Pa 250 Pa ±15 %

Pressure connections:

 2 plastic pipe connection pieces  external diameter: 6.0 mm

Switching

differential

Tolerance

band of

Maximum operating pressure:

 10 kPa for all pressure ranges

Mounting position

 Switching pressure specifications apply to vertical installation which is also the recom-

mended position with pressure-pipe connections pointing downwards. If the switches are installed horizontally with AMP connection terminals uppermost, the switching values are approx. 20 Pa higher.

Accessories



Various mounting brackets

 Metal mounting bracket S-shaped  Metal mounting bracket L-shaped  Snap-on plastic bracket S-shaped  Snap-on plastic bracket L-shaped



Various connection kits

 Plastic tube for Climaset©  Angled metall pipe for Climaset©  Rubber grommet for Climaset©  Roll with 100 m PVC hose



Various cable conduits

 Cap nut conduit including sealing and counter screw  M20x1.5 cable conduit including sealing and counter screw  NPT1/2” cable conduit without counter parts

(see Chapter 9.2)

Operating instructions – Pressure Switch - Model-930...EX Rev.9

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Page 15

Appendix

Dimensioned drawings and accessories

9.2 Dimensioned drawings and accessories

Beck GmbH Druckkontrolltechnik Ferdinand-Steinbeis-Straße 4 71144 Steinenbronn

Operating instructions – Pressure Switch - Model-930...EX Rev.9

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Page 16

Appendix

Declaration of Conformity

9.3 Declaration of Conformity

Beck GmbH Druckkontrolltechnik Ferdinand-Steinbeis-Straße 4 71144 Steinenbronn

Operating instructions – Pressure Switch - Model-930...EX Rev.9

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Page 17

Appendix

EC design test certification

Beck GmbH Druckkontrolltechnik Ferdinand-Steinbeis-Straße 4 71144 Steinenbronn

9.4 EC design test certification

Note: More documentation for EC design test certification you can download from our website.

Operating instructions – Pressure Switch - Model-930...EX Rev.9

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i,a

Appendix

Proof of compliance with explosion protection regulations

Beck GmbH Druckkontrolltechnik Ferdinand-Steinbeis-Straße 4 71144 Steinenbronn

9.5 Proof of compliance with explosion protection regulations

Project

Name

Date

Requirement Complies with Requirement Complies with

Application area

Explosion group

Requirement

(Gas)

III

(Dust)

A B A,B,C C A,B,C

Permitted Equip.

Protection Level

(Gas)

A,B

A,B,C

Certified for

Temperature

class (Gas)

T1 T2

T3 T4 T5 T6

Temperature

class (Gas)

Temp.

(Dust)

T1 400oC

T1-T2 300oC T1-T3 200oC

T1-T4 135oC T1-T5 100oC T1-T6 85oC

Ignition protection class

EPL (G=Gases)

Zone 2,22

1,21 0,20

CHARACTERICTICS

Designation

Gc,Dc Zone 2/22

Gb,Db Zone 1,2 /21,22 Ex ia IIB / Ex ia IIIB

Ga,Da Zone 0,1,2/ 20,21,22

Intrinsically safe operating materials

Pressure switch Cable

Associated operating materials

Switch amplifier

Model 930 ..EX

Application area 2G 2D Ignition protection class Ex ia … Gb Ex ia…Db Explosion group IIB IIIB Temperature class T4 T135C Certification BVS 06 ATEX E141X

30V

600mW

0 1mH

Kabelkennwerte: 1

/km ; 110 nF/km

60mA

Requirement complied with Application area Ignition protection class Explosion group Temperature class Equipment Protection Level EPL/Zone

Proof of intrinsic safety

Associated operating mate-

rials

(barriers)

I P L C

Operating instructions – Pressure Switch - Model-930...EX Rev.9

Require-

ment

≤ ≤ ≤ ≥ ≥

Intrinsically safe operating

materials

(including cable)

30V

60mA

600mA

1mH

0,1µF

(1km cable) (1km cable)

Compliant

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