Magnehelic gauge (low differential pressure gauge)
A low differential pressure gauge, often called a Magnehelic-type gauge, reads very small air pressure differences in pascals. Pioneer supplies it in ranges from 0–60 Pa to 0–8 kPa, including 60–0–60 Pa, on a 100 mm dial with ±3% of full-scale accuracy, for clean rooms, AHU filters, ducts and fume hoods.
- Range
- 0–60 Pa to 0–8 kPa
- Dial
- 100 mm
- Accuracy
- ±3% FS
Quotation within one working day of your BOQ. Supply across India and export, FOB Nhava Sheva.
How it works and when to use it
Clean-room pressure cascades and filter monitoring work in tens or hundreds of pascals, far below anything a Bourdon gauge can see. This gauge uses a diaphragm and a magnetic linkage, so it reads air and non-combustible gas differentials without liquid and without a pointer stem passing through a seal.
Mount it with the diaphragm vertical, connect the high-pressure tap to the dirty or higher side, and set zero with the front screw before commissioning.
Versions
- 0–250 Pa and 0–500 Pa. AHU pre-filters and fine filters, the most ordered ranges.
- 0–60 Pa and 60–0–60 Pa. Clean-room and isolation-room pressure cascades.
- 0–1 kPa to 0–8 kPa. HEPA banks, duct static and fan pressure.
Typical applications
- Pharma and electronics clean rooms
- AHU and FFU filter monitoring
- Hospital isolation rooms and OTs
- Duct static and fan pressure
- Fume hoods and dust collectors
Specification
| Parameter | Value |
|---|---|
| Ranges | 0–60, 0–125, 0–250, 0–500, 0–750 Pa; 60–0–60 Pa; 0–1, 0–1.5, 0–2, 0–3, 0–4, 0–5, 0–8 kPa |
| Accuracy | ±3% of full scale |
| Service | Air and non-combustible compatible gases (dry, clean, non-corrosive) |
| Pressure limits | −70 kPa to 100 kPa |
| Temperature limits | −6.7 °C to 60 °C |
| Dial | 100 mm |
| Housing | Die-cast aluminium case and bezel, acrylic cover, grey finish |
| Zero adjustment | Front |
| Mounting orientation | Diaphragm vertical |
| Connections | 1/8" NPT(F) high and low taps, one pair side, one pair back |
| Standard accessories | Two plugs, two rubber-tubing adapters, three flush-mounting adapters |
| Box versions | Plain gauge, or with MS powder-coated or SS box and accessories |
Other ranges, units, connections and dial sizes on request. Send your medium, range and connection and we match the model.
Consultant specification clause
Paste into your technical specification or BOQ and adjust ranges and quantities.
- Low differential pressure gauges shall be diaphragm type with magnetic linkage, 100 mm dial, ±3% FS accuracy, front zero adjustment.
- Range to suit the duty (e.g. 0–250 Pa for pre-filters, 0–500 Pa for fine filters, 0–60 Pa for room cascades).
- Supplied with mounting accessories and tubing adapters; in SS box where scheduled. Make: Pioneer Industrial Instruments, Pune, or approved equivalent.
Questions buyers ask
Is this the same as a Magnehelic gauge?
It is the same type of instrument. Magnehelic is a trademark of Dwyer Instruments; Pioneer supplies its own low differential pressure gauges of this type.
Which range for an AHU filter?
0–250 Pa for pre-filters and 0–500 Pa for fine filters cover most AHUs. HEPA banks often need 0–1 kPa.
Can it be used on water?
No. It is for air and non-combustible, dry, clean gases only. For liquids use a differential pressure gauge.
What is a Magnehelic gauge used for?
Reading very small air pressure differences in pascals: clean-room pressure cascades, AHU and HEPA filter pressure drop, duct static pressure, fume hoods and dust collectors.
Do you supply a digital Magnehelic gauge?
Yes, Pioneer also supplies a digital differential pressure indicator reading in pascals; see the differential pressure gauge page.
Related
- Differential Pressure Gauge
- Digital Pressure Gauge
- Pressure unit converter
- Siphons, valves and accessories
Need the data sheet? Call or WhatsApp +91 93700 39974 or email info@pioneerinstrumentation.com.