Air Flow Switch 930 Adjustable

Product Details:

Sensor Type Paddle Flow Switch
Diameter 6 to 20 mm (Probe Optional)
Application Media Air
Resolution 0.1 m/s
Wind Speed Adjustable
Humidity % Max 95% RH, non-condensing
Protection IP54
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Air Flow Switch 930 Adjustable Product Specifications

Current Range 5A max (Switch Contact)
Pressure Range 0-10 Bar
Sensor Type Paddle Flow Switch
Connectivity Type SPDT Switch Output
Accuracy 5%
Diameter 6 to 20 mm (Probe Optional)
Application Media Air
Measurement Range 0.5 to 10 m/s
Resolution 0.1 m/s
Power Supply 230V AC, 50/60Hz
Wind Speed Adjustable
Display Type Mechanical Indicator
Temperature Range -20C to +85C
Material Galvanized Sheet Steel
Frequency 50/60 Hz
Power Consumption Low
Range 0.5 to 10 m/s (Adjustable)
Protection IP54
Humidity % Max 95% RH, non-condensing
Capacity Up to 3500 m/h
Flow Rate 0.5 to 10 m/s

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

Specification

Type	Adjustable switching points between	Maximum operating pressure
930.80	20 and 200 Pa	10 kPa
930.80B	20 and 300 Pa	10 kPa
930.84	30 and 400 Pa	10 kPa
930.83	50 and 500 Pa	10 kPa
930.85B	100 and 1000 Pa	10 kPa
930.85	200 and 1000 Pa	10 kPa
930.86	500 and 2500 Pa	10 kPa
930.87	1000 and 4000 Pa	10 kPa
930.87B	1000 and 5000 Pa	10 kPa

Temperature range:

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

Diaphragm material:

Silicone, free of gas emissions.

Pressure connection:

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

Electrical rating:

Standard version: max. 1,5 A (0,4 A) / 250 VAC
Low voltage version: max.0,1A / 24VDC.

Electrical connection:

Tab terminals 6.30.8 mm in accordance with DIN 46244 or push-on screw terminals.
Cable conduit with cable strain relief.

Protection class:

IP 54 with cover
IP 65 with cover
IP 00 without cover

Versatile and Reliable Air Flow Monitoring

The Air Flow Switch 930 Adjustable is engineered for duct or in-line mounting, supporting both horizontal and vertical installations. Its robust construction using galvanized sheet steel ensures durability even in challenging environments. With a mechanical indicator, the switch offers instant visual verification of system status, while the external adjustment screw allows precise set point modifications without system interruption.

Easy Installation and Integration

Designed for hassle-free connection, the switch is equipped with a PG9 gland entry for secure cabling and an external set point screw for quick adjustments. Compatible with most standard HVAC systems, it operates efficiently across a wide temperature range from -20C to +85C. The optional probe diameters guarantee flexibility and customization for different duct sizes, making it an essential component for accurate air flow management.

FAQ's of Air Flow Switch 930 Adjustable:

Q: How is the Air Flow Switch 930 Adjustable installed in duct systems?

A: The switch is duct mountable and can be installed in either horizontal or vertical positions. Use the provided mounting accessories to secure it to the duct wall, and connect wiring through the PG9 gland entry for a safe and reliable connection.

Q: What benefits does the external set point adjustment offer?

A: With an external adjustment screw, users can fine-tune the air flow set point from outside the enclosure, enabling easy maintenance, faster calibration, and less downtime for systems that require routine adjustments.

Q: When should the Air Flow Switch 930 be used in HVAC applications?

A: Deploy this flow switch when you need to monitor, control, or signal low or adequate air flow conditions within ducts, air handling units, or ventilation channels. It helps safeguard system performance and trigger alarms or cut-off circuits during abnormal flow situations.

Q: What process does the switch use to detect air flow?

A: The Air Flow Switch 930 uses a paddle-type sensor that mechanically responds to the force of moving air within the duct. The sensor's action actuates a micro switch, sending an SPDT signal when the adjusted flow threshold is reached.

Q: Where does this air flow switch find its typical usage?

A: It's widely used in HVAC systems, clean rooms, ventilation equipment, and industrial process controls in commercial and industrial settings, especially where reliable air flow monitoring is critical for safety and system functionality.

Q: How accurate and responsive is the Air Flow Switch 930?

A: It maintains an accuracy of 5% with a fast response time under two seconds, providing timely detection of flow changes. The mechanical indicator displays the status instantly for quick troubleshooting and system checks.

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