

Accurately measure differential pressure in decontamination environments, especially when working with asbestos. Rugged, fluid- and power-free, it's ideal for checking negative pressure and ensuring the safety of confined areas. This reliable instrument is widely used in the building, ventilation and filtration sectors.
No returnable if used. For more information about our return policy, please refer to the Orders and Returns.
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.
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.
Give your teams a reliable, maintenance-free tool to ensure compliance and safety in sensitive environments, with the Magnehelic pressure gauge.
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.
The Magnehelic manometer enables precise measurement of differential pressure to verify negative pressure in confined areas, ensuring safe and compliant decontamination.
This model offers reliable and accurate fluid-free readings, with sensitivity tailored to the requirements of sensitive environments such as cleanrooms, laboratories or asbestos removal sites.
No, this manometer operates without a power supply, making it a robust, self-contained and easy-to-install tool for real-time pressure monitoring.
Need additional safety equipment? See the articles; Safety Liberty hard hat (TA14LR), Omega II minor hard hat type 1 (TA14FS), motorized respirator with 1000 protection factors (R6800PF), 3M mask protection film (R6885).
Under "Accessories" at the bottom of the page. If you're looking for work equipment, have a look at the following products: White antistatic coveralls with (V51), containment fabric or (SAH2MA) air cleaners (SACTT2).
Data sheet
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