Differential pressure switch 930 EX adjustable

Product Details:

Grade Industrial, Explosion Proof
Sensor Type Differential Pressure Sensor
Seal Material Silicone Rubber
Outer Size 116 x 98 x 55 mm
Thread 1/4 BSP (standard)
Display Dial Analog
Material Aluminum Die Cast Housing
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Differential pressure switch 930 EX adjustable Product Specifications

Processing Type Explosion Protected (Ex d llB T6)
Grade Industrial, Explosion Proof
Outer Size 116 x 98 x 55 mm
Seal Material Silicone Rubber
Pointer Material Black Aluminum
Material Aluminum Die Cast Housing
Accuracy 1.5% FS
Sensor Type Differential Pressure Sensor
Thread 1/4 BSP (standard)
Accessories Mounting Screws, Operation Manual
Finishing Powder Coated, Anti-Corrosive
Diameter Approx. 98 mm (dial size)
Measure Pressure Of Gas, Air (Non-corrosive Media)
Display Dial Analog
Dial Material Aluminum/Plastic
Scale Range Adjustable 20 - 3000 Pa
Mount Type Wall/Surface Mount
Glass Size Approx. 85 mm

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

Designed for Demanding Environments

The Differential Pressure Switch 930 EX is engineered for resilience in hazardous and industrial settings. Its flameproof enclosure and ATEX/IECEx compliance make it suitable for environments where explosion risks are present. The IP65-rated housing provides excellent resistance to dust, moisture, and corrosion, ensuring stability and safe operation in challenging conditions typical of HVAC systems, air conditioners, and clean rooms.

Precise and Adjustable Monitoring

Offering an external adjustment knob, this switch allows users to set the actuation point anywhere between 20 and 3000 Pa without needing to open the housing. Its analog dial display features a large, clear scale for easy pressure reading. With a fast response time of under one second and high accuracy, it delivers reliable feedback essential for monitoring gas or air pressure in non-corrosive media.

FAQ's of Differential pressure switch 930 EX adjustable:

Q: How do I install the Differential Pressure Switch 930 EX?

A: Installation of the 930 EX is straightforward. Mount the unit on a wall or surface using the included mounting screws. Connect the cable gland (PG 13.5) to your electrical wiring, ensuring adherence to local electrical safety codes, especially in explosion hazard areas. The device comes with a detailed operation manual to guide you through the process.

Q: What media can the Differential Pressure Switch 930 EX measure?

A: This switch is designed to measure the differential pressure of non-corrosive gases or air. It is commonly used in HVAC applications, clean rooms, air conditioners, filter monitoring, and other industrial environments where monitoring air or inert gas pressure is essential.

Q: When should I adjust the setpoint of the pressure switch?

A: Adjust the setpoint using the external knob when your system's operating requirements change or when calibrating for different pressure monitoring needs (within the 20-3000 Pa range). The design allows adjustments without opening the enclosure, preserving the explosion-proof integrity and IP65 protection.

Q: Where is the Differential Pressure Switch 930 EX typically used?

A: This device is widely used in HVAC systems, air conditioners, clean rooms, filter monitoring, and explosion hazard areas requiring ATEX/IECEx compliance. Its versatile mount design and robust protection make it suitable for industrial facilities across sectors.

Q: What are the benefits of the explosion-proof enclosure and IP65 protection rating?

A: The flameproof/explosion-proof enclosure protects the switch in hazardous environments with explosive gases or dusts, while the IP65 rating ensures total dust ingress protection and resistance to water jets. This dual protection maximizes safety and reliability, even in harsh industrial settings.

Q: How does the analog dial display facilitate monitoring?

A: The large, analog dial provides a clear and immediate visual reading of differential pressure. Its design, including high-contrast pointers, allows operators to quickly assess system status without complex electronic interfaces, improving speed and ease of use.

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