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Dwyer A3050 Photohelic Pressure Switch/Gauge (0-50"w.c.)

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$1,191.38
SKU:
A3050
Condition:
New
Availability:
In Stock
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Dwyer A3050 Photohelic Pressure Switch/Gauge (0-50"w.c.)

$1,191.38

Dwyer A3050

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
Applications
  • Air conditioner systems
  • Clean rooms
  • Fume exhaust systems

Dwyer A3050 Specifications

Switch Specifications
Switch Type Each set point has 2 Form C relays (DPDT)
Repeatability ±1% of FS
Electrical Rating 10 A at 28 VDC
10 A at 120
240 VAC
Electrical Connections Screw terminals. Use 167°F (75°C) copper conductors only
Power Requirements 120 VAC, 50/60 Hz
240 VAC and 24 VAC power optional
Mounting Orientation Diaphragm in vertical position. Consult factory for other position orientations
Set Point Adjustment Adjustable knobs on face
Agency Approvals CE, CSA, UL
Gauge Specifications
Service Air and non-combustible, compatible gases
Accuracy ±2% of FS at 70°F (21.1°C)
±3% on -0
±4% on -00 models
Pressure Limits -20" Hg to 25 psig (-0.677 to 1.72 bar)
MP option; 35 psig (2.41 bar)
HP option; 80 psig (5.52 bar)
Temperature Limits 20 to 120°F. (-6.67 to 48.9°C)
-20 to 120°F (-28 to 48.9°C) with low temperature option
Process Connections ? female NPT
Dimensions 4" (101.6 mm) dial face
5 x 8¼" (127 x 209.55 mm)
Weight 4 lb (1.81 kg)
Shipping & Return
Returns Policy

All returns must be authorized. Items returned prior to authorization will not be accepted. For international customers where applicable, customers must ship any returns to us freight and duty prepaid. Return freight charges for internationsl shippments will be the responsibility of the customer.

Defective new equipment may be returned for warrantyrepair/exchange to us within (5) days of the shipment receipt date. After five (5) days, returns will be handled by direct contact and in accordance with the warranty terms of the item's manufacturer. Items that have malfunctioned due to mishandling, electrical overload, etc., will be subject to repair charge.

Non defective new equipment will be authorized for return within five (5) days of the shipment receipt date if the equipment is still in new, re-sellable condition with the original manual(s), accessories, packing material and carton. We reserve the right to reject returnsin which there is no original packaging, missing accessories, damage or visible signs of usage of the item. A restocking fee of up to 25% of purchase price may apply. Special orders and dangerous goods are non-returnable.

(Do not write anytingon the manufacturer's original package or use as a shipping carton. Include all accessories, manuals and warranties.)

Please, include a copy of the packing list or invoice with a reason for the return. Your return authorization number is valid for thirty (30) days.

Shipping

We can ship to both US and Canada. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will charge a flat rate shipping for your items.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Not Applicable

Condition: NA

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  • How do I retturn items?
    All returns must be authorized. Items returned prior to authorization will not be accepted. For international customers where applicable, customers must ship any returns to us freight and duty prepaid. Return freight charges for internationsl shippments will be the responsibility of the customer.

    Defective new equipment may be returned for warrantyrepair/exchange to us within (5) days of the shipment receipt date. After five (5) days, returns will be handled by direct contact and in accordance with the warranty terms of the item's manufacturer. Items that have malfunctioned due to mishandling, electrical overload, etc., will be subject to repair charge.

    Non defective new equipment will be authorized for return within five (5) days of the shipment receipt date if the equipment is still in new, re-sellable condition with the original manual(s), accessories, packing material and carton. We reserve the right to reject returnsin which there is no original packaging, missing accessories, damage or visible signs of usage of the item. A restocking fee of up to 25% of purchase price may apply. Special orders and dangerous goods are non-returnable.

    (Do not write anytingon the manufacturer's original package or use as a shipping carton. Include all accessories, manuals and warranties.)

    Please, include a copy of the packing list or invoice with a reason for the return. Your return authorization number is valid for thirty (30) days.

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