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Dwyer A3000 500pa Photohlc Gg 0-500pa 240v

Dwyer Instruments Magnehelic Gauges - Dwyer A3000 500pa Photohlc Gg 0-500pa 240v

28% 28 percent off rrp

Department: Dwyer Instruments Magnehelic Gauges
  Dwyer A3000 500pa Photohlc Gg 0-500pa 240v
    • 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.
• Gage 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. Special units for other voltages are available.
• Switch set pointers show switch settings at all times.
• Spring loaded friction clutch prevents operator damage of set point mechanism.
  DWYER A3000 500PA PHOTOHLC GG 0-500PA 240V Photohelic Switch/Gages function as versatile, highly repeatable pressure switches combined with a precise pressure gage employing the time-proven Magnehelic gage design. The Photohelic switch/gage measures and controls positive, negative or differential pressures of air and compatible gases. Standard models are rated to 25 psig (1.7 bar) with options to 35 (2.4) or 80 (5.5 bar) psig. Single pressure 36000S models measure to 6000 psig (413 bar) with a 9000 psig (620 bar) rating. Two phototransistor actuated, DPDT relays are included for low/high limit control. Easy to adjust set point indicators are controlled by knobs located on the gage face. Individual set point deadband is one pointer width - less than 1% of full scale. Set points can be interlocked to provide variable deadband - ideal for control of fans, dampers, etc. Gage reading is continuous and unaffected by switch operation, even during loss of electrical power. Choose from full scale pressure ranges from a low 0-.25 (0-6 mm) w.c. up to 30 psi (21 bar); single positive pressure to 6000 psig (413 bar).
Photohelic Sensing - How It Works
In typical applications, these Dwyer switch/gages control between high and low pressure set points. When pressure changes, reaching either set point pressure, the infrared light to the limiting phototransistor is cut off by the helix-driven light shutter. The resulting phototransistor signal is electronically amplified to actuate its DPDT slave relay and switching occurs. Dead band between make and break is 1% of full scale or less - just enough to assure positive, chatter-free operation.

Relay-Transformer Features
A plastic housing protects all electronic components. Solid-state and integrated circuit electronics are on glass-epoxy printed circuit boards and self-extinguishing terminal boards.
Manufacture: Dwyer
Weight: GAGE SPECIFICATIONS Service: Air and non-combustible, compatible gases. Wetted Materials: Consult Factory. Accuracy: ±2% of full scale at 70°F (21.1°C). ±3% on -0 and ±4% on -00 models. Pressure Limits: -20 Hg. to 25 psig (-0.677 to 1.72 bar). MP
Dwyer
Code#:		 A3000-500PA-230V
MyTub Code#: 303995
PDF File: Download pdf brochure 0.30mb
 
rrp£628.42
save£176.75
inc vat(£542.00)

price£451.67

Free UK delivery
email for overseas delivery charges

Stock Check Dwyer A3000 500pa Photohlc Gg 0-500pa 240v check stock level here..
   
 

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Dwyer A3000 500pa Photohlc Gg 0-500pa 240v dwyer a3000 500pa photohlc gg 0-500pa 240v
£451.67
Dwyer A3000 500pa Photohlc Gg 0-500pa 240v dwyer a3000 500pa photohlc gg 0-500pa 240v
£451.67
Dwyer A3000 500pa Photohlc Gg 0-500pa 240v dwyer a3000 500pa photohlc gg 0-500pa 240v
£451.67
Dwyer A3000 500pa Photohlc Gg 0-500pa 240v dwyer a3000 500pa photohlc gg 0-500pa 240v
£451.67
Dwyer A3000 500pa Photohlc Gg 0-500pa 240v dwyer a3000 500pa photohlc gg 0-500pa 240v
£451.67

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Received the item within 23 days of placing the order. Feel lucky to have found this part on your site, as it is from an old gas fire and no-one else stocked it. Many thanks. Terry
...Terry Le Poidevin - Bitterne Roofing Service
good service
...cartmel valley game
Great service and part came on time, very help full on the phone makes a change from some of the companys i deal with. Merry Christmas & a Happy New Year.
...Paul Harper
Sophie and company, you were so good today, thank you for following through on my problems, really impressed with your reliable and caring customer service and your friendly response. thanks.
...ROBERT
order received complete and on time with your usual efficiency. thank you
...peter richardson
There was a delay in delivery of our order but we were regularly updated and the new delivery was on time and efficient.
...Linda Howels
Really impressed with the service and speedy dispatch of order!
...Gina L. Mason
When the wrong product was delivered apparently the fault of the manufacturer that dispatched it, Laurie did a good job in sorting things out. It was nice to have the personal service - definitely came across as a real business that cared, not a call center.
...Anthony Smith
Thank you for your help. I will be recommending you to my friends, family and colleagues. Regards
...ROB Whitehouse
Comply with my order, fast delivery product once that product was available. No bad surprise. Satisfied.
...GENGENWIN

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Dwyer A3000 500pa Photohlc Gg 0-500pa 240v