Pressure switch 901..Ex with factory-set pressure setting for Ex zones 0,1 and 2
  • Pressure switch 901..Ex with factory-set pressure setting for Ex zones 0,1 and 2
  • Pressure switch 901..Ex with factory-set pressure setting for Ex zones 0,1 and 2
  • Pressure switch 901..Ex with factory-set pressure setting for Ex zones 0,1 and 2
  • Pressure switch 901..Ex with factory-set pressure setting for Ex zones 0,1 and 2
  • Pressure switch 901..Ex with factory-set pressure setting for Ex zones 0,1 and 2

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Manufacturer: Beck

901..EX pressure switches with a fixed setting for ex 0, 1 and 2 zones

Zone 0

Factory-set pressure switch monitoring overpressure, vacuum or differential pressure of liquid and gaseous – also aggressive – media.
Pressure setting and switching differential are factory-set by the manufacturer.

 

Specifications:

Medium Air, (non-)combustible and aggressive gases and vapours
Temperature ranges:  
Medium and ambient temperature -20OC +85OC
Storage temperature -40OC +85OC
Trip pressure ranges:  
Overpressure 5 to 200 mbar (min. measuring range
  1 to 12 bar (max. measuring range)
Vacuum -5 to -200 mbar (min. measuring range)
  -200 to -900 mbar (max. measuring range)
Differential pressure 5 ... 50 mbar
Max. working overpressure 0.1 to 25 bar/-1 bar (refer to table
Switching differential 2.5 to 1,500 mbar; depending on pressure range (refer to table)
Trip pressure tolerance ±10% from setpoint
Materials  
Tube connection 5 / 6.5 and 10 mm, PA / PPS
Threaded connections M10x1 / G1/8 to G1/2
  PA/PVDF/stainless steel/brass
Diaphragm depending on medium; NBR, silicone, FKM (Viton ® ), EPDM, for 901.30 silicone (other materials on request).
Weight 24 VDC/100 mA; 30 VDC/45 mA
Electrical rating 24VDC/100mA; 30VDC/45mA
Electrical connection AMP flat plug, 6.3 mm x 0.8 mm, in accordance with DIN 46244, or push-on screw terminals
Cable conduit M16x1.5, with integrated cable strain relief
Protection category IP 54 (with cover 6371)
Mechanical working life over 106 switching operations
Reducing nozzles diameter optionally 0.3/0.5/0.8 mm

 

ATEX

EC type examination BVS 06 ATEX E 141X
Device category I 1/2G or II 2G
Ignition protection type EX ia IIBT4 or EX ia IICT4
CE conformity ATEX Directive 94/9/EC
  RoHS-Directive 2002/95/EC
Other approvals type examination by
TÜV Südwest and DVGW

 

Ex i-circuits

 

This pressure switch can be used in potentially explosive zones 0, 1 and 2. In the safe area, an associated isolating means (separating barrier, switching amplifier) must be connected before. The entire isolating circuit must then be proved to keep inherent safety.
For this purpose, the power specifications (P, I, U) of the barrier must be lower and the characteristics (L, C) higher than those of the pressure switch and of the connection line (blue colour).

Characteristics for IIB, C:
Voltage-U i 24VDC/30VDC
Current -Ii 100mA/45mA
Capacitance -Ci 0μF
Inductance -Li 0mH
 

 

Arrangement of contacts
for 901.1x EX, 901.30 EX, 901.41 EX, 901.51 EX only for 901.2x EX

 

Pressure connections

 

Type Tube connections Threaded connections
5,0 mm 6,5 mm 10,0 mm M10x1 G1/8 G1/4 G1/2

901.1x EX

 PA PA  PPS PA  PPS PA, PVDF, MS, V2A PA, PVDF, MS, V2A PVDF, MS, V2A MS

901.2x EX

 PA PA  PPS PA  PPS PA, PVDF, MS, V2A PA, PVDF, MS, V2A MS, V2A MS

901.30 EX

   PA          

901.41 EX

   PA  PPS PA  PPS PA, PVDF, MS, V2A PA, PVDF, MS, V2A MS, V2A MS

901.51 EX

       MS MS, V2A MS, V2A  


PA = polyamide, PVDF = polyvinyldifluoride, PPS = polyphenylensulfide, MS = brass

Overpressure ranges

 

Type Factory-set
trip pressure
selectable		 Standard switching differential Tolerance
band
in % of
trip pressure		 Maximum
positive
working
pressure		 Maximum
negative
working
pressure
between and lower end of range upper end of range

901.1x EX

 5 200 mbar 2,5 mbar 50 mbar 10% 0,5 / 4 bar -/ -1 bar
200 1000 mbar 50 mbar 150 mbar 10% 1 / 4 bar -/ -1 bar

901.41 EX

 500 3000 mbar 200 mbar 600 mbar 10% 10 bar -1 bar

901.51 EX

 1,0 bar 12 bar 0,2 bar 1,5 bar 10% 25 bar -1 bar

 

Vacuum ranges

 

Type Factory-set
trip pressure
selectable		 Standard switching differential Tolerance
band
in % of
trip pressure		 Maximum
positive
working
pressure		 Maximum
negative
working
pressure
between and lower end of range upper end of range

901.2x EX

 -5 -200 mbar 2,5 mbar 50 mbar 10% 0,5 / 4 bar -1 bar
-200 -900 mbar 50 mbar 150 mbar 10% 1 / 4 bar -1 bar

 

Differential pressure ranges

 

Type Factory-set
trip pressure
selectable		 Standard switching differential Tolerance
band
in % of
trip pressure		 Maximum
positive
working
pressure		 Maximum
negative
working
pressure
between and lower end of range upper end of range

901.30

 5 mbar 50 mbar 2,5 mbar 25 mbar 10% 100 mbar -100 mbar

 

Drawings and dimensions

 

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Zone 0

Factory-set pressure switch monitoring overpressure, vacuum or differential pressure of liquid and gaseous – also aggressive – media.
Pressure setting and switching differential are factory-set by the manufacturer.

 

Specifications:

Medium Air, (non-)combustible and aggressive gases and vapours
Temperature ranges:  
Medium and ambient temperature -20OC +85OC
Storage temperature -40OC +85OC
Trip pressure ranges:  
Overpressure 5 to 200 mbar (min. measuring range
  1 to 12 bar (max. measuring range)
Vacuum -5 to -200 mbar (min. measuring range)
  -200 to -900 mbar (max. measuring range)
Differential pressure 5 ... 50 mbar
Max. working overpressure 0.1 to 25 bar/-1 bar (refer to table
Switching differential 2.5 to 1,500 mbar; depending on pressure range (refer to table)
Trip pressure tolerance ±10% from setpoint
Materials  
Tube connection 5 / 6.5 and 10 mm, PA / PPS
Threaded connections M10x1 / G1/8 to G1/2
  PA/PVDF/stainless steel/brass
Diaphragm depending on medium; NBR, silicone, FKM (Viton ® ), EPDM, for 901.30 silicone (other materials on request).
Weight 24 VDC/100 mA; 30 VDC/45 mA
Electrical rating 24VDC/100mA; 30VDC/45mA
Electrical connection AMP flat plug, 6.3 mm x 0.8 mm, in accordance with DIN 46244, or push-on screw terminals
Cable conduit M16x1.5, with integrated cable strain relief
Protection category IP 54 (with cover 6371)
Mechanical working life over 106 switching operations
Reducing nozzles diameter optionally 0.3/0.5/0.8 mm

 

ATEX

EC type examination BVS 06 ATEX E 141X
Device category I 1/2G or II 2G
Ignition protection type EX ia IIBT4 or EX ia IICT4
CE conformity ATEX Directive 94/9/EC
  RoHS-Directive 2002/95/EC
Other approvals type examination by
TÜV Südwest and DVGW

 

Ex i-circuits

 

This pressure switch can be used in potentially explosive zones 0, 1 and 2. In the safe area, an associated isolating means (separating barrier, switching amplifier) must be connected before. The entire isolating circuit must then be proved to keep inherent safety.
For this purpose, the power specifications (P, I, U) of the barrier must be lower and the characteristics (L, C) higher than those of the pressure switch and of the connection line (blue colour).

Characteristics for IIB, C:
Voltage-U i 24VDC/30VDC
Current -Ii 100mA/45mA
Capacitance -Ci 0μF
Inductance -Li 0mH
 

 

Arrangement of contacts
for 901.1x EX, 901.30 EX, 901.41 EX, 901.51 EX only for 901.2x EX

 

Pressure connections

 

Type Tube connections Threaded connections
5,0 mm 6,5 mm 10,0 mm M10x1 G1/8 G1/4 G1/2

901.1x EX

 PA PA  PPS PA  PPS PA, PVDF, MS, V2A PA, PVDF, MS, V2A PVDF, MS, V2A MS

901.2x EX

 PA PA  PPS PA  PPS PA, PVDF, MS, V2A PA, PVDF, MS, V2A MS, V2A MS

901.30 EX

   PA          

901.41 EX

   PA  PPS PA  PPS PA, PVDF, MS, V2A PA, PVDF, MS, V2A MS, V2A MS

901.51 EX

       MS MS, V2A MS, V2A  


PA = polyamide, PVDF = polyvinyldifluoride, PPS = polyphenylensulfide, MS = brass

Overpressure ranges

 

Type Factory-set
trip pressure
selectable		 Standard switching differential Tolerance
band
in % of
trip pressure		 Maximum
positive
working
pressure		 Maximum
negative
working
pressure
between and lower end of range upper end of range

901.1x EX

 5 200 mbar 2,5 mbar 50 mbar 10% 0,5 / 4 bar -/ -1 bar
200 1000 mbar 50 mbar 150 mbar 10% 1 / 4 bar -/ -1 bar

901.41 EX

 500 3000 mbar 200 mbar 600 mbar 10% 10 bar -1 bar

901.51 EX

 1,0 bar 12 bar 0,2 bar 1,5 bar 10% 25 bar -1 bar

 

Vacuum ranges

 

Type Factory-set
trip pressure
selectable		 Standard switching differential Tolerance
band
in % of
trip pressure		 Maximum
positive
working
pressure		 Maximum
negative
working
pressure
between and lower end of range upper end of range

901.2x EX

 -5 -200 mbar 2,5 mbar 50 mbar 10% 0,5 / 4 bar -1 bar
-200 -900 mbar 50 mbar 150 mbar 10% 1 / 4 bar -1 bar

 

Differential pressure ranges

 

Type Factory-set
trip pressure
selectable		 Standard switching differential Tolerance
band
in % of
trip pressure		 Maximum
positive
working
pressure		 Maximum
negative
working
pressure
between and lower end of range upper end of range

901.30

 5 mbar 50 mbar 2,5 mbar 25 mbar 10% 100 mbar -100 mbar

 

Drawings and dimensions

 

Less
Read more