Gage / Switches, Dial

Gage / Switches, Dial
Dial Gages and Switches are compatible with air and other non-combustible and non-corrosive gases. Dial Gages and Dial Switches are indicators for the difference between two pressures that also have switch outputs. They can also be used for single pressure.
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  1. Series MP Mini-Photohelic® Differential Pressure Switch/Gage
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    Mini-Photohelic® Differential Pressure Switch/Gage combines the dif ...
    Starting at $437.00
  2. Series 3000MR/3000MRS Photohelic® Switch/Gage
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    Photohelic® Switch/Gage combines functions of a precise, highly rep ...
    Starting at $554.00
  3. Series A3000 Photohelic® Pressure Switch/Gage
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    Photohelic® Pressure Switch/Gage functions as versatile, highly rep ...
    Starting at $582.00
  4. Series 43000 Capsu-Photohelic® Pressure Switch/Gage
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    Capsu-Photohelic® Pressure Switch Gage is versatile and combined wi ...
    Starting at $1,500.00
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Questions

Question
What restrictions, if any, are imposed for the Magnehelic® and Photohelic® gages in vacuum service?
Answer
In applications involving higher vacuums than 20" Hg, leakage due to gage housing porosity becomes the limiting factor.
Question
Will a Dwyer pressure switch be damaged if the pressure exceeding the maximum set-point is applied to the switch?
Answer
No. Not unless the maximum pressure rating of the switch is exceeded.
Question
What is an RMR Photohelic®?
Answer
The RMR option is for a remote mounted relay, where the relay pack is seperate from the gage. The unit comes with a standard interconnecting cable that is 3 feet long.
Question
What is the NEMA rating of a Photohelic®?
Answer
Our standard is considered to be NEMA 1 rated for general purpose. We do have weatherproof (NEMA 4X) and explosion-proof (NEMA 7 & 9) enclosures available.
Question
Are air velocity scales available?
Answer
Yes, the information we require to supply the proper range is the velocity (fpm or m/s) or velocity pressure (inches of water or kpa) and density of air (lb/ft3 or g/cm3).