Beck-930 Series Differential pressure switch

Adjustable differential pressure switch for monitoring overpressure, vacuum and differential pressure of air or other non-combustible, non-aggressive gases.

The switching pressure can be adjusted without a pressure gauge using a scaled adjustment knob. Various versions with overlapping adjustment ranges between 0.2 mbar and 50 mbar are available for this purpose. As standard, the pressure switch is equipped with a transparent cover of protection class IP54.

We have three variants such as:

  • Differential pressure switch 930 adjustable
  • Differential pressure switch 930 EX adjustable
  • Differential pressure switch 930 with UL approval adjustable

*All variants is adjustable from 20 to 5000 pascal.930-8-Beck-Differetntial-pressure-switch

Applications

Adjustable differential pressure switch for monitoring overpressure, vacuum and differential pressure of air or other non-combustible, non-aggressive gases.

Possible fields of application include:

  • Monitoring air filters and ventilators
  • Monitoring industrial cooling-air circuits
  • Overheating protection for fan heaters
  • Monitoring flows in ventilation ducts
  • Controlling air and fire-protection flaps
  • Frost protection for heat exchangers

Version

With this pressure switch, the switching pressure can be adjusted without a pressure gauge using a scaled adjustment knob.

Type Adjustment range  Switchig diferential Repeatability of the switching pressure
930.80 20  –  200 Pa 10 Pa ±5 %,    min. ±5 Pa
930.80B 20 –  300 Pa 10 Pa ±5 %,    min. ±5 Pa
930.84 30 –  400 Pa 15 Pa ±5 %,    min. ±5 Pa
930.83 50 –  500 Pa 20 Pa ±2.5 %, min. ±5 Pa
930.85 200 –  1000 Pa 100 Pa ±1 %,    min. ±5 Pa
930.85B 100 –  1000 Pa 100 Pa ±1 %,    min. ±5 Pa
930.86 500 –  2500 Pa 150 Pa ±1 %,    min. ±5 Pa
930.87 1000 –  4000 Pa 250 Pa ±1 %,    min. ±5 Pa
930.87B 1000 –  5000 Pa 250 Pa ±1 %,    min. ±5 Pa

* typically, at beginning of setting range.

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.

Specification

Baca juga: Delta-Mobrey GR2/4 Pressure Switch

Maximum operating pressure

10 kPa for all pressure ranges.

Medium

Air, non-combustible and non-aggressive gases.

Temperature range

Medium and ambient temperature from –20°C to +85°C. Storage temperature from –40°C to +85°C.

Diaphragm material

Silicone, tempered at 200°C, free of gas emissions. Other materials available on request.

Pressure connections

2 plastic pipe connection pieces (P1 and P2), external diameter 6.0 mm: P1 for connection to higher pressure (marked +) P2 for connection to lower pressure (marked –)

Housing materials

Switch body and a cover of plastic.

Weight

With cover 150 g, without cover 110 g.

Mechanical working life

Over 106 switching operations.

Electrical rating

Standard version:   max. 1.5 A (0.4 A) / 250 VAC

Low-voltage version: max. 0.1 A / 24 VDC

Electrical connections

AMP flat plug 6.3×0.8 mm in accordance with DIN 46244 or push-on screw terminals. Cable conduit with cable strain relief.

Arrangement of contacts

1 Break contact 2 Operating contacts 3 Power supply line

 Protection category

IP 54 with cover, IP 00 without cover.

CE Conformity

each depending on technical specification: Low Voltage Directive 2006/95/EC; RoHS Directive 2011/65/EC; Gas Appliance Directive 2009/142/EC; ATEX- Directive 2014/34/EC; ANSI UL508; CSA.

Specifications according to EN1854

Class of control and regulation function: A Deviation: ≤±15 %, min. ±10 Pa Drift: ≤±15 %

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