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 varian such as:
  • Differential pressure switch 930 adjustable
  • Differential pressure switch 930 EX adjustable
  • Differential pressure switch 930 with UL approval adjustable
*All varians is adjustable from 20 to 5000 pascal.

Applications

Adjustable differential pressure switch for monitor ing 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.
TypeAdjustment range form --- to ---Switchig diferentialRepeatability of the switching pressure
930.8020         200 Pa10 Pa±5 %,    min. ±5 Pa
930.80B20         300 Pa10 Pa±5 %,    min. ±5 Pa
930.8430         400 Pa15 Pa±5 %,    min. ±5 Pa
930.8350         500 Pa20 Pa±2.5 %, min. ±5 Pa
930.85200       1000 Pa100 Pa±1 %,    min. ±5 Pa
930.85B100       1000 Pa100 Pa±1 %,    min. ±5 Pa
930.86500       2500 Pa150 Pa±1 %,    min. ±5 Pa
930.871000     4000 Pa250 Pa±1 %,    min. ±5 Pa
930.87B1000     5000 Pa250 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 con nection 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 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 6.3x0.8 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 contact 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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