Beck-930 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.
Applications
Beck-930 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
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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