Pressure switches Series 901..EX PRESCAL for ex 0, 1 and 2 zones
  • Pressure switches Series 901..EX PRESCAL for ex 0, 1 and 2 zones
  • Pressure switches Series 901..EX PRESCAL for ex 0, 1 and 2 zones
  • Pressure switches Series 901..EX PRESCAL for ex 0, 1 and 2 zones
  • Pressure switches Series 901..EX PRESCAL for ex 0, 1 and 2 zones
  • Pressure switches Series 901..EX PRESCAL for ex 0, 1 and 2 zones

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Manufacturer: Beck

Pressure switches Series 901..EX PRESCAL for ex 0, 1 and 2 zones

Zone 0

Adjustable pressure switch monitoring overpressure, vacuum or differential pressure of liquid and gaseous – also aggressive – media.
The pressure switch uses a scaled adjustment knob to enable the adjustment of trip and reset pressure without the use of a scr-ewdriver.

 

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 20 mbar (min. measuring range)
  7 to 12 bar (max. measuring range)
Vacuum -5 to -20 mbar (min. measuring range)
  -300 to -700 mbar (max. measuring range)
Differential pressure 5 to 20 mbar (min. measuring range)
10 to 50 mbar (max. measuring range)
Max. working overpressure 0.2 to 25 bar/-1 bar (refer to table)
Switching differential 3 to 2,000 mbar; depending on pressure range (refer to table)
Trip pressure tolerance ±10% from setpoint
Materials:  
Tube connections 5 / 6.5 and 10 mm, PA / PPS
Threaded connections M10x1 / G1/8 to G1/2 PA/PVDF/stainless steel/brass
Membrana Zależy od medium; NBR, silikon, FKM (Viton®), EPDM,
Weight 30 to 300 g (depending on housing material)
Obciążalność styków: 24 VDC/100 mA; 30 VDC/45 mA
Electrical rating Płaskie wtyki AMP. 6,3x0,8mm DIN 46244
Electrical connection AMP flat plug, 6.3 mm x 0.8 mm, acc. to DIN 46244, or push-on screw terminals
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
EC Gas Device Directive
90/396/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
Insuctance -Li 0mH
 

 

Arrangement of contacts
dla 901.6x EX, 901.8x EX, 901.9x EX only for 901.7x Ex

 

Pressure connections

 

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

901.61-65 EX

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

901.66-68 EX

       MS, V2A MS, V2A MS, V2A MS

901.71-76 EX

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

901.77-78 EX

       MS, V2A MS, V2A MS, V2A MS

901.81 EX

   PA          

901.91-93 EX

       MS MS, V2A MS, V2A  


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

Overpressure ranges

 

Type Setting range for Reference scale
accuracy		 Switching
differential		 Maximum positive
working pressure
standard/extended		 Maximum negative
working pressure
standard/extended
between and

901.61 EX

 5 20 mbar 10% 3mbar 0,5 / 4 bar -/-1 bar

901.62 EX

 10 50 mbar 10% 5 mbar 0,5 / 4 bar -/-1 bar

901.63 EX

 25 100 mbar 10% 10 mbar 0,5 / 4 bar -/ -1 bar

901.64 EX

 50 250 mbar 10% 20 mbar 1 / 4 bar -/ -1 bar

901.65 EX

 100 500 mbar 10% 50 mbar 1 / 4 bar -/ -1 bar

901.66 EX

 250 1,000 mbar 10% 150 mbar 10 bar -1 bar

901.67 EX

 500 1,500 mbar 10% 250 mbar 10 bar -1 bar

901.68 EX

 1 3,000 mbar 10% 500 mbar 10 bar -1 bar

901.91 EX

 1 6,0 bar 10% 0,5-2,0 bar 25 bar -1 bar

901.92 EX

 4 9,0 bar 10% 0,5-2,0 bar 25 bar -1 bar

901.93 EX

 7 12,0 bar 10% 0,5-2,0 bar 25 bar -1 bar

 

Vacuum ranges

 

Type Setting range for Reference scale
accuracy		 Switching
differential		 Maximum positive
working pressure
standard/extended		 Maximum negative
working pressure
standard/extended
between and

901.71 EX

 -5 -20 mbar 10% 3 mbar 0,5 / 4 bar -1 bar

901.72 EX

 -10 -50 mbar 10% 5 mbar 0,5 / 4 bar -1 bar

901.73 EX

 -25 -100 mbar 10% 10 mbar 0,5 / 4 bar -1 bar

901.74 EX

 -50 -125 mbar 10% 20 mbar 0,5 / 4 bar -1 bar

901.75 EX

 -75 -200 mbar 10% 25 mbar 1 / 4 bar -1 bar

901.76 EX

 -100 -300 mbar 10% 30 mbar 1 / 4 bar -1 bar

901.77 EX

 -200 -500 mbar 10% 75 mbar 1 / 4 bar -1 bar

901.78 EX

 -300 -700 mbar 10% 75 mbar 1 / 4 bar -1 bar

 

Vacuum ranges

 

Type Setting range for Reference scale
accuracy		 Switching
differential		 Maximum positive
working pressure
standard/extended		 Maximum negative
working pressure
standard/extended
between and

901.81 EX

 5 20 mbar 10% 3 mbar 100 mbar -100 mbar

901.82 EX

 10 50 mbar 10% 5 mbar 100 mbar -100 mbar

 

Drawings and dimensions

 

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Zone 0

Adjustable pressure switch monitoring overpressure, vacuum or differential pressure of liquid and gaseous – also aggressive – media.
The pressure switch uses a scaled adjustment knob to enable the adjustment of trip and reset pressure without the use of a scr-ewdriver.

 

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 20 mbar (min. measuring range)
  7 to 12 bar (max. measuring range)
Vacuum -5 to -20 mbar (min. measuring range)
  -300 to -700 mbar (max. measuring range)
Differential pressure 5 to 20 mbar (min. measuring range)
10 to 50 mbar (max. measuring range)
Max. working overpressure 0.2 to 25 bar/-1 bar (refer to table)
Switching differential 3 to 2,000 mbar; depending on pressure range (refer to table)
Trip pressure tolerance ±10% from setpoint
Materials:  
Tube connections 5 / 6.5 and 10 mm, PA / PPS
Threaded connections M10x1 / G1/8 to G1/2 PA/PVDF/stainless steel/brass
Membrana Zależy od medium; NBR, silikon, FKM (Viton®), EPDM,
Weight 30 to 300 g (depending on housing material)
Obciążalność styków: 24 VDC/100 mA; 30 VDC/45 mA
Electrical rating Płaskie wtyki AMP. 6,3x0,8mm DIN 46244
Electrical connection AMP flat plug, 6.3 mm x 0.8 mm, acc. to DIN 46244, or push-on screw terminals
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
EC Gas Device Directive
90/396/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
Insuctance -Li 0mH
 

 

Arrangement of contacts
dla 901.6x EX, 901.8x EX, 901.9x EX only for 901.7x Ex

 

Pressure connections

 

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

901.61-65 EX

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

901.66-68 EX

       MS, V2A MS, V2A MS, V2A MS

901.71-76 EX

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

901.77-78 EX

       MS, V2A MS, V2A MS, V2A MS

901.81 EX

   PA          

901.91-93 EX

       MS MS, V2A MS, V2A  


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

Overpressure ranges

 

Type Setting range for Reference scale
accuracy		 Switching
differential		 Maximum positive
working pressure
standard/extended		 Maximum negative
working pressure
standard/extended
between and

901.61 EX

 5 20 mbar 10% 3mbar 0,5 / 4 bar -/-1 bar

901.62 EX

 10 50 mbar 10% 5 mbar 0,5 / 4 bar -/-1 bar

901.63 EX

 25 100 mbar 10% 10 mbar 0,5 / 4 bar -/ -1 bar

901.64 EX

 50 250 mbar 10% 20 mbar 1 / 4 bar -/ -1 bar

901.65 EX

 100 500 mbar 10% 50 mbar 1 / 4 bar -/ -1 bar

901.66 EX

 250 1,000 mbar 10% 150 mbar 10 bar -1 bar

901.67 EX

 500 1,500 mbar 10% 250 mbar 10 bar -1 bar

901.68 EX

 1 3,000 mbar 10% 500 mbar 10 bar -1 bar

901.91 EX

 1 6,0 bar 10% 0,5-2,0 bar 25 bar -1 bar

901.92 EX

 4 9,0 bar 10% 0,5-2,0 bar 25 bar -1 bar

901.93 EX

 7 12,0 bar 10% 0,5-2,0 bar 25 bar -1 bar

 

Vacuum ranges

 

Type Setting range for Reference scale
accuracy		 Switching
differential		 Maximum positive
working pressure
standard/extended		 Maximum negative
working pressure
standard/extended
between and

901.71 EX

 -5 -20 mbar 10% 3 mbar 0,5 / 4 bar -1 bar

901.72 EX

 -10 -50 mbar 10% 5 mbar 0,5 / 4 bar -1 bar

901.73 EX

 -25 -100 mbar 10% 10 mbar 0,5 / 4 bar -1 bar

901.74 EX

 -50 -125 mbar 10% 20 mbar 0,5 / 4 bar -1 bar

901.75 EX

 -75 -200 mbar 10% 25 mbar 1 / 4 bar -1 bar

901.76 EX

 -100 -300 mbar 10% 30 mbar 1 / 4 bar -1 bar

901.77 EX

 -200 -500 mbar 10% 75 mbar 1 / 4 bar -1 bar

901.78 EX

 -300 -700 mbar 10% 75 mbar 1 / 4 bar -1 bar

 

Vacuum ranges

 

Type Setting range for Reference scale
accuracy		 Switching
differential		 Maximum positive
working pressure
standard/extended		 Maximum negative
working pressure
standard/extended
between and

901.81 EX

 5 20 mbar 10% 3 mbar 100 mbar -100 mbar

901.82 EX

 10 50 mbar 10% 5 mbar 100 mbar -100 mbar

 

Drawings and dimensions

 

Less
Read more
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