Dwyer A3000-50MM Photohelic Pressure Switch Gauge Range 0-50 mm w.c.

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Dwyer A3000-50MM Photohelic Pressure Switch Gauge Range 0-50 mm w.c. Specification

Usage
Air and non-combustible, compatible gases

Size
4" (101.6 mm) dial face,5 x 8" (127 x 209.55 mm)

Product Type
Dwyer Instruments A3000

Diameter
4" (101.6 mm) dial face,5 x 8" (127 x 209.55 mm) Millimeter (mm)

Weight
4 lb (1.81 kg) Kilograms (kg)

Mount Type
Surface

Scale Range
A3000-50MM Range 0-50 mm w.c.

Measure Pressure Of
Gas

Dwyer A3000-50MM Photohelic Pressure Switch Gauge Range 0-50 mm w.c. Trade Information

Minimum Order Quantity
1 Piece

Payment Terms
Cash Against Delivery (CAD), Cash on Delivery (COD), Cheque, Letter of Credit (L/C), Telegraphic Transfer (T/T), Paypal, Delivery Point (DP), Western Union, Letter of Credit at Sight (Sight L/C), Days after Acceptance (DA), Cash in Advance (CID), Cash Advance (CA)

Sample Policy
Sample costs shipping and taxes has to be paid by the buyer

Packaging Details
EXTRA

Main Export Market(s)
Western Europe, Asia, Australia, North America, Eastern Europe, Middle East, Central America, South America, Africa

Main Domestic Market
Nagaland, Chandigarh, Himachal Pradesh, Pondicherry, Uttarakhand, Daman and Diu, Dadra and Nagar Haveli, Lakshadweep, South India, East India, Andaman and Nicobar Islands, Assam, Arunachal Pradesh, Bihar, Delhi, Gujarat, Goa, Jammu and Kashmir, Karnataka, Madhya Pradesh, Maharashtra, Mizoram, Meghalaya, Manipur, Punjab, Rajasthan, Sikkim, Tamil Nadu, Telangana, Tripura, Uttar Pradesh, West Bengal, Kerala, Haryana, North India, Andhra Pradesh, Central India, Odisha, Jharkhand, West India, Chhattisgarh, All India

Certifications
YAS

About Dwyer A3000-50MM Photohelic Pressure Switch Gauge Range 0-50 mm w.c.

Dwyer A3000-50MM Photohelic Pressure Switch Gauge Range 0-50 mm w.c.

Dwyer Instruments A3000-50MM

PHOTOHELIC Pressure Switch/Gage Range 0-50 mm w.c.

Order #: A3000-50MM

Mfg #: A3000-50MM

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.

Availability: Item ships in about Ships in 4-6 weeks

Product Highlights

SR Single contact, right set point, for actuation on increasing or decreasing pressure

OLS OEM Model, less relay and transformer components and housing but including infared diodes and phototransistor(s), light shutter and set pointer(s). For single or double contact

RMR Remote-Mounted Relay, relay pack may be mounted remotely from gage. Standard length is 5 ft. For other lengths, specify cable length required

TAMP Tamper-proof knobs, low temperature option, special scales, voltages and other features and modifications are available. Special Housings available include Weatherproof (NEMA 4) and Explosion-proof (NEMA 7 & 9; NEC Cl I, Gr C&D; Cl II, Gr E, F&G; Cl III)

Scale No. 3401 Square Root Specify Range

Scale No. 3402 Blank Scale Specify Range

Range 0-50 mm w.c.

High & Low Latching Circuits. Dwyer Photohelic switch/gages can be wired for high-latching, low-latching or combination high-low latching circuits. That is, the equipment will hold in these respective positions once activated and until manually reset. This can be particularly useful for alarm and signal applications where control is accomplished by another Photohelic switch/gage or other means. Complete wiring and operational instructions are included. Where manual reset is required a dry circuit push button such as Dwyer Part A-601 should be used.

Dwyer A3000-50MM 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 167F (75C) 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 70F (21.1C),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 120F. (-6.67 to 48.9C),-20 to 120F (-28 to 48.9C) with low temperature option
Process Connections: female NPT
Dimensions: 4" (101.6 mm) dial face,5 x 8" (127 x 209.55 mm)
Weight: 4 lb (1.81 kg)