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Pressure switch 901 Prescal EX adjustable

Pressure switch 901 Prescal EX adjustable

Product Details:

  • Connection 1/4 BSP female
  • Accuracy 1% of full scale
  • Pressure 0.5 to 10 bar (adjustable range)
  • Function Adjustable pressure monitoring and control
  • Size Compact design with standard dimensions
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Pressure switch 901 Prescal EX adjustable Product Specifications

  • Adjustable pressure monitoring and control
  • 1% of full scale
  • 1/4 BSP female
  • Compact design with standard dimensions
  • 0.5 to 10 bar (adjustable range)

Product Description

Applications :

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

 

Technical Data : 

Setting ranges:

Type Setting range between Maximum positive working pressure
Standard/extended
Maximum negative working pressure
Standard/extended
901.61 Ex 5 und 20 mbar 0,5/4 bar /1 bar
901.62 Ex 10 und 50 mbar 0,5/4 bar /1 bar
901.63 Ex 25 und 100 mbar 0,5/4 bar /1 bar
901.64 Ex 50 und 250 mbar 1/4 bar /1 bar
901.65 Ex 100 und 500 mbar 1/4 bar /1 bar
901.66 Ex 250 und 1.000 mbar 10 bar 1 bar
901.67 Ex 500 und 1.500 mbar 10 bar 1 bar
901.68 Ex 1.000 und 3.000 mbar 10 bar 1 bar
901.91 Ex 1,0 und 6,0 bar 25 bar 1 bar
901.92 Ex 4,0 und 9,0 bar 25 bar 1 bar
901.93 Ex 7,0 und 12,0 bar 25 bar 1 bar
901.71 Ex 5 und 20 mbar 0,5/4 bar 1 bar
901.72 Ex 10 und 50 mbar 0,5/4 bar 1 bar
901.73 Ex 25 und 100 mbar 0,5/4 bar 1 bar
901.74 Ex 50 und 125 mbar 0,5/4 bar 1 bar
901.75 Ex 75 und 200 mbar 1/4 bar 1 bar
901.76 Ex 100 und 300 mbar 1/4 bar 1 bar
901.77 Ex 200 und 500 mbar 1/4 bar 1 bar
901.78 Ex 300 und 700 mbar 1/4 bar 1 bar
901.81 Ex 5 und 20 mbar (Differenzdruck) 100 mbar 100 mbar
901.82 Ex 10 und 50 mbar (Differenzdruck) 100 mbar 100 mbar

 

  • Temperature range:
    Temperature of media and ambient temperature from -20C to 85C
    Storage temperature: -40 C bis +85 C

 

  • 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:
    24 VDC/100 mA
    30 VDC/45 mA

 

  • Electrical connection:
    AMP flat plug 6.3 x 0.8 mm according to DIN 46244 or push-on screw terminals

 

  • Protection class:
    IP 54 (with cover 6371)


Rugged and Accurate Performance

Constructed with die-cast aluminium and an epoxy coating, the Pressure switch 901 Prescal EX is engineered for harsh environments. Its IP65 rating guarantees protection against dust and water, while the explosion-proof design is suited for demanding industrial settings. High repeatability and 1% full-scale accuracy assure consistent process control, supporting complex automation requirements.


Versatile Monitoring and Control

With an adjustable pressure range of 0.5 to 10 bar and compatibility for air, oil, and non-aggressive gases, this switch adapts to various applications. The SPDT micro switch supports a high electrical load, making integration with a wide array of control systems straightforward. An external set screw allows convenient onsite pressure adjustment.


Flexible Installation and Usage

The compact, standard-sized design and 1/4 BSP female connection promote ease of installation across diverse systems. The ability to mount in any position enhances installation flexibility, while robust temperature resistance and reliable weatherproofing extend the operational life and reduce maintenance effort.

FAQs of Pressure switch 901 Prescal EX adjustable:


Q: How do I adjust the pressure setting on the 901 Prescal EX pressure switch?

A: You can adjust the pressure set point using the external set screw located on the housing. This feature allows for quick and precise on-site calibration without the need to open the enclosure.

Q: What benefits does the die-cast aluminium, epoxy-coated enclosure provide?

A: The die-cast aluminium construction with epoxy coating ensures superior weatherproofing (IP65 protection) and explosion-proof safety, making it suitable for demanding industrial environments prone to dust, moisture, and hazardous atmospheres.

Q: What types of media are compatible with this pressure switch?

A: The switch is designed for use with air, oil, and non-aggressive gases, making it versatile for a wide array of industrial automation and process control applications.

Q: Where can the pressure switch be installed within a system?

A: Thanks to its flexible design, the pressure switch can be mounted in any position, and its compact size with a 1/4 BSP female connection allows easy integration into existing or new installations.

Q: When is it ideal to use the 901 Prescal EX pressure switch?

A: This switch is ideal for environments that demand high repeatability and precise pressure monitoring and control, especially within the adaptable pressure range of 0.510 bar and temperatures from -25C to +80C.

Q: What is the typical process for integrating this pressure switch into an automation system?

A: Integration is straightforward: Mount the switch to your system using the 1/4 BSP connection, connect the electrical terminals to your control circuit (using the SPDT micro switch rated at 16A, 250VAC), and use the external set screw for precise pressure adjustment.

Q: What advantages does the high repeatability offer in industrial automation?

A: High repeatability ensures reliable switching and consistent process control, reducing the risk of system errors and enhancing overall operational efficiency in automated applications.

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