Magnehelic S2000 pressure gauge with scale from 0 to 0.25 inches of water (0 to 60 Pa), to indicate differential pressure


Return conditions : No returnable if used. For more information about our return policy, please refer to the "Orders and Returns" link on the home page

Magnehelic™ differential pressure gauge to swiftly indicate positive, negative or differential pressure. This tool comes with rubber tubing 3/16 in diameter X 10 ft length as well as mounting and sealing accessories. The display features a dual scale from 0 to 0.25 inches of water (inWC) and 0 to 60 Pascals. The pressure gauge can be used to measure the positive, negative and differential pressure with a high accuracy within 2% of full scale. Sold individually.

This pressure gauge is generally used on major sites of asbestos abatement to avoid the spread of dust arising from asbestos or other materials outside the premises. One can, with such a tool, confirm that the work site is under negative pressure, thus ensuring that all dust and spores remain inside the contaminated premises until filtered.

The pressure gauge should be installed on the contaminated site near the employee entrance. Using a flexible tube, a gauge reading will be taken inside the site and compared to the reading outside the site.


  • Designed to resist to shock, vibration, and over-pressures
  • Contains no liquid whatsoever which may freeze or evaporate
  • Requires no batteries or other sources of power
  • Used mainly in engineering and construction industries to measure fan and blower pressures, filter resistance, air velocity, etc.
  • Ideal for monitoring filter status, duct static pressure, room pressure, fan or blower pressure, paint booths, dust collectors, cabinet purging, etc.
  • Can easily be either flush mounted or mounted on the wall
  • Consist of a die cast aluminum case and bezel coated with a corrosion resistant acrylic cover
  • Pressure limits: -20 inHg to 15 psig (-0.677 bar to 1,034 bar)
  • Temperature limits: 20°F to 140°F (-6.67°C to 60°C)
  • Designed for readings in vertical position
  • Equipped with 1/8 in diameter FNPT plug

Please note that we did get calls concerning the measurement scale in inches of water (inWC) rather than kPa (kilopascal). We have collected a few answers on that particular issue:

- Inches of water (inWC) unit of measurement is actually more precise than the kPa unit of pressure.
- No variation would be visible with a device graduated in kPa. 

For more information on the installation and operation of this gauge, please see the available PDF in the download section. The manufacturer has provided information in English only, however, a French translation of the instruction is available, courtesy of Sylprotec. Please note that the French version is more concise and complete since Sylprotec draws on an expertise that shall be available to customers.

Type of productSafety equipment
Main categoryIndustrial accessoiries
Sub categoryAsbestos decontamination
Name of the productMagnehelic pressure gauge
Product codeSAHM2
Length (in/cm)8 in / 20.32 cm
Width (in/cm)3 in / 7.6 cm
Height (in/cm)3 in / 7.6 cm
Weight (lb/kg)5 lb / 2.26 Kg
Return conditionsNo returnable if used. For more information about our return policy, please refer to the "Orders and Returns" link on the home page


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