Pressure Switch – Beck 901 Prescal Series

Features

  • With adjustable setting
  • Mounting in any position, to be specified for settings below 100 mba
  • Various mounting brackets and protection caps with IP 44,
    IP 54 and IP 65
  • Life – Mechanically more than 10⁶ cycles
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Pressure switch 901 Prescal® adjustable from -700 mbar to 12 bar.

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 screwdriver. Mounting in any position, to be specified for settings below 100 mbar.

Applications

  • Wastewater technology
  • liquid level measurement
  • pump control
  • medical technology
  • and many more

 

Specification

Temperature range Ambient temperature from –20°C to 85°C
  Temperature of media up to 85°C or 130°C depending on material of pressure connection and diaphragm.
Diaphragm material Depending on media NBR, Silicone, FKM (Viton®), EPDM. For 901.8x Silicone, others upon request.
Pressure connection Material: PA, PVDF, PPS, Brass, Stainless steel
  Hose nipple: 5,0mm, 6,5mm, 10,0mm
  Thread: M10x1, G1/8, G1/4, G1/2
Electrical rating Specification of the maximum values ​​for ohmic load.
AgNi-contact:
6(1,5) A/250 VAC
2 A/24 VDC
Gilded contact:
100 mA/24 VAC
30 mA/24 VDC
On request AgNi contacts up to 10 A / 250 VAC can also be supplied.
Electrical connection AMP flat plug 6.3 x 0.8 mm according to DIN 46244
Protection class IP44 / IP54 / IP65 depending on the used protection cap
Type Setting range for upper switching point between Maximum positive working pressure Maximum negative working pressure
Standard/extended Standard/extended
901.61 5 and 20 mbar 0,5/4 bar –/–1 bar
901.62 10 and 50 mbar 0,5/4 bar –/–1 bar
901.63 25 and 100 mbar 0,5/4 bar –/–1 bar
901.64 50 and 250 mbar 1/4 bar –/–1 bar
901.65 100 and 500 mbar 1/4 bar –/–1 bar
901.66 250 and 1.000 mbar 10 bar –1 bar
901.67 500 and 1.500 mbar 10 bar –1 bar
901.68 1.000 and 3.000 mbar 10 bar –1 bar
901.91 1,0 and 6,0 bar 25 bar –1 bar
901.92 4,0 and 9,0 bar 25 bar –1 bar
901.93 7,0 and 12,0 bar 25 bar –1 bar
901.71 – 5 and – 20 mbar 0,5/4 bar –1 bar
901.72 – 10 and – 50 mbar 0,5/4 bar –1 bar
901.73 – 25 and – 100 mbar 0,5/4 bar –1 bar
901.74 – 50 and – 125 mbar 0,5/4 bar –1 bar
901.75 – 75 and – 200 mbar 1/4 bar –1 bar
901.76 – 100 and – 300 mbar 1/4 bar –1 bar
901.77 – 200 and – 500 mbar 1/4 bar –1 bar
901.78 – 300 and – 700 mbar 1/4 bar –1 bar
901.81 5 and 20 mbar (differential pressure) 100 mbar –100 mbar
901.82 10 and 50 mbar (differential pressure) 100 mbar –100 mbar

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Beck 901 Prescal Series Pressure Switch-DpstarGroup

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