A3040 Dwyer Photohelic Pressure Switch/Gauge (0-40"w.c.)

A3040 Dwyer Photohelic Pressure Switch/Gauge (0-40"w.c.)

Home/Store/Industrial Components
$485.00
Bezel and front cover with set point knobs and zero adjustment screw
In stock: 1 available
1
A3040 Dwyer Photohelic Pressure Switch/Gauge (0-40"w.c.)
Home/Store/Industrial Components
Product Details
Brand: Dwyer
Weight: 5.00 lbs
Applications
  • Air conditioner systems
  • Clean rooms
  • Fume exhaust systems

Features

  • Bezel and front cover (with set point knobs and zero adjustment screw) removed to expose Photohelic® switch/gage set point mechanism (cover is clear polycarbonate plastic)
  • Gauge pointer and light shutter are mounted on helix and balancing counterweight
  • Shutter passes through slot in optical limit switch to expose phototransistors to integral infrared light source or mask them depending on applied pressure
  • Light shield effectively protects phototransistors from strong outside light sources yet allows free pointer movement; it also gives interior a clean "finished" look
  • Optical limit switches are used for reliability and long service life. Attached directly to set pointers, they are individually aligned to assure precise switching accuracy
  • Semi-flexible drive shaft connects to set point knobs
  • Zero adjustment screw connects to screw in cover to adjust zero pressure reading
  • Plastic enclosure protects electronic components and electrical connections
  • Polycarbonate connection or terminal board is self-extinguishing
  • Glass epoxy printed circuit boards for durability and permanence
  • Load relays are DPDT with latching feature for maximum application versatility
  • Electronics are designed to operate on 50/60 Hz, 120 volt current with 10% over or under voltage
  • Switch set pointers show switch settings at all times
  • Spring loaded friction clutch prevents operator damage of set point mechanism
  • 3-in-1 instrument allows the reduction of several instruments with one product
  • Unique design and 1% full scale dead band provides quick response to pressure changes means no delay in switching and chatter-free operation
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