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Dwyer Minihelic II Differential Pressure Gauge

Dwyer Minihelic II differential pressure gauge is the compact “little brother” of the industry standard Dwyer Magnehelic gauge.  It is suitable for many of the same applications as the Magnehelic where accuracy and sensitivity, is less important in comparison to a compact mount. A simple design, The Dwyer Minihelic is easy to read and can safely operate. As a result, it combines small size, clean design and low cost with enough accuracy for all the most demanding applications.


This gauge is designed for panel mounting in a single 2-5/8′ diameter hole. Its over-pressure protection is built in by means of a blow-out membrane moulded in conjunction with the diaphragm. In addition, it features a high accuracy (within 5%) and a simple easy to read dial.  Therefore, the application of this product is commonly seen in different scenarios such as clean rooms, cooling systems, filtering, duct pressures, air purging, etc.


Dwyer Minihelic® Ranges available include… 

  • 0…0.5, 0…1.0, 0…2.0, 0…3.0, 0…5.0, 0…10, 0…20, 0…40, 0…60, 0…100 “WG ranges.
  • 0…25, 0…50, 0…100 mmWG ranges
  • 0…125, 0…250, 0…500 Pa ranges
  • 0…1, 0…3 kPa ranges


Fluidic are a recognised partner of Dwyer Instruments for Scotland and the North of England.  Our instrumentation engineers are product trained and are able to help with instrument selection within the full Dwyer Instrument supply scope.  Fluidic have supplied the Magnehelic® DP gauge for more than twenty years. We offer multiple “Magnehelic Solution” services and can supply with calibration certification where desired.   Please call either office for more information (Glasgow 0141 641 5920,  Warrington 01925 572401).



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