Differential pressure switch 930 EX adjustable

Product Details:

Accuracy 2% of full scale
Connection Pressure connection G 1/4 female thread, optional NPT or other threads available
Pressure Adjustable differential pressure range: 20 mbar to 8 bar (depending on model)
Function Differential pressure monitoring and switching in hazardous areas (Ex applications)
Size Compact design, standard version approx. 160 x 85 x 78 mm (L x W x H)
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Differential pressure switch 930 EX adjustable Product Specifications

Connection Pressure connection G 1/4 female thread, optional NPT or other threads available
Size Compact design, standard version approx. 160 x 85 x 78 mm (L x W x H)
Function Differential pressure monitoring and switching in hazardous areas (Ex applications)
Accuracy 2% of full scale
Pressure Adjustable differential pressure range: 20 mbar to 8 bar (depending on model)

Enclosure Explosion proof (Ex d IIC T6) die-cast aluminum housing
Weight Approx. 1.5 kg
Adjustment External adjustment screw for set point
Ingress Protection IP65
Switch Type Single-pole changeover (SPDT), micro switch or gold contact available
Temperature Range Ambient: -20C to +60C
Mounting Wall or pipe mounting with optional bracket
Electrical Rating 5A, 250V AC (resistive load)

Product Description

Applications :

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 Ex zones 1, 2 and 21, 22 with ATEX type examination

Technical Data :

Setting ranges:

Type	Adjustable switching points between	Maximum operating pressure
930.80BEx	20 und 300 Pa	10 kPa
930.84Ex	30 und 400 Pa	10 kPa
930.83Ex	50 und 500 Pa	10 kPa
930.85Ex	200 und 1.000 Pa	10 kPa
930.86Ex	500 und 2.500 Pa	10 kPa
930.7BEx	1.000 und 5.000 Pa	10 kPa

Temperature range:
Medium and ambient temperature from 20C to +85C
Storage temperature from 40C to +85C

Diaphragm material:
Silicone, tempered at 200C free of gas emissions (other materials on request).

Pressure connection:
2 plastic pipe connection pieces (P1 and P2), external diameter 6.0 mm.

Electrical rating:
24 VDC/100 mA
30 VDC/60 mA

Electrical connection:
AMP flat plug, 6.3 mm x 0.8 mm, in accordance with DIN 46244 or push-on screw terminals.

Protection class:
IP 54 with cover

Explosion-proof Safety for Hazardous Areas

Designed for environments with flammable gases or vapors, the 930 EX differential pressure switch offers a certified explosion-proof enclosure (Ex d IIC T6). Its die-cast aluminum housing and IP65 rating ensure robust protection, making it perfect for process industries, refineries, or chemical plants seeking safe monitoring and switching solutions.

Versatile Installation and External Adjustment

The compact 930 EX switch supports wall or pipe mounting with an optional bracket, offering flexibility in placement. Adjusting the set point is straightforward using the external adjustment screw, reducing installation and maintenance time and making calibration possible even after the device is mounted.

FAQ's of Differential pressure switch 930 EX adjustable:

Q: How is the set point adjusted on the 930 EX differential pressure switch?

A: The 930 EX features an external adjustment screw, allowing users to conveniently and accurately set or recalibrate the pressure switching point without opening the enclosure.

Q: What are the main benefits of using the 930 EX in hazardous areas?

A: This switch's explosion-proof die-cast aluminum housing (Ex d IIC T6) guarantees safe operation in hazardous environments. Its high ingress protection (IP65) also shields internal components from dust and moisture, ensuring long-lasting reliability.

Q: When should I consider using gold contacts instead of the standard micro switch?

A: Gold contacts are recommended for low current or low voltage applications, where their increased resistance to oxidation delivers better electrical performance and contact reliability compared to standard micro switches.

Q: Where can the 930 EX pressure switch be installed?

A: The device can be mounted on walls or pipes using an optional bracket, providing flexibility to accommodate your facility's layout and operational needs.

Q: What is the adjustable differential pressure range, and how does it impact usage?

A: Depending on the model, the switch offers an adjustable differential pressure range from 20 mbar to 8 bar, making it suitable for a wide spectrum of applications, from low-pressure monitoring to higher-pressure industrial processes.

Q: What process connections are available with the 930 EX differential pressure switch?

A: The standard pressure connection uses a G 1/4 female thread, with additional options like NPT or other thread types available to suit different system requirements.

Q: How does the accuracy of the 930 EX affect its performance in monitoring applications?

A: With an accuracy of 2% of full scale, the 930 EX ensures dependable and precise switching-critical for maintaining safety and operational integrity in sensitive or regulated industrial processes.

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