Other Brand
Dwyer Photohelic® Pressure Switch/Gages A3002 With Good Price In Stock

Dwyer Photohelic® Pressure Switch/Gages A3002 With Good Price In Stock

Model: A3002

$0.00

Supplier: Products

Categories: Other Brand

After sales service. If you have any questions, click here.

Product Description

Dwyer Photohelic® Pressure Switch/Gages A3002 With Good Price In Stock


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® 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 setpoint indicators are controlled by knobs located on the gage face. Individual setpoint deadband is one pointer width — less than 1% of full scale. Setpoints 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 helixdriven 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.  


SPECIFICATIONS

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 option; 35 psig

(2.41 bar), HP option; 80 psig (5.52 bar). A36003S – 36010S; 150 psig (10.34

bar). A36020S and higher;1.2 x full scale pressure.

Temperature Limits: 20 to 120°F. (-6.67 to 48.9°C) Low temperature option

available.

Process Connections: 1/8˝ female NPT.

Size: 4˝ (101.6 mm) dial face, 5˝ (127 mm) O.D. x 8-1/4˝ (209.55 mm).

Weight: 4 lb (1.81 kg).

SWITCH SPECIFICATIONS

Switch Type: Each setpoint has 2 Form C relays (DPDT).

Repeatability: ±1% of full scale.

Electrical Rating: 10A @ 28 VDC, 10A @ 120, 240 VAC.

Electrical Connections: Screw terminals. Use 167°F (75°C) copper

conductors only.

Power Requirements: 120 VAC, 50/60 Hz; 240 VAC & 24 VAC Power op

tional.

Mounting Orientation: Diaphragm in vertical position. Consult factory for

other position orientations.

Set Point Adjustment: Adjustable knobs on face.

Agency Approvals: UL, CSA, CE. Optional-EXPL Explosion-proof

enclosure does not possess any agency approvals.




image

Dwyer Photohelic® Pressure Switch/Gages A3002 With Good Price In Stock

A3000-00A36003SA3000-60PA
A3000-0A36006SA3000-125PA
A3001A36010SA3000-250PA
A3002A36020SA3000-500PA
A3003A36030SA3000-750PA
A3004A36060SA3300-250PA
A3005A36100SA3300-500PA
A3006A36300SA3000-1KPA
A3008A36500SA3000-1.5KPA
A3010A3000-00AVA3000-2KPA
A3015A3000-0AVA3000-3KPA
A3020A3001AVA3000-4KPA
A3025A3002AVA3000-5KPA
A3030A3010AVA3000-8KPA
A3040A3000-6MMA3000-10KPA
A3050A3000-10MMA3000-15KPA
A3060A3000-25MMA3000-20KPA
A3080A3000-50MMA3000-25KPA
A3100A3000-80MMA3000-30KPA
A3150A3000-100MMA3300-1KPA
A3000-00NA3300-20MMA3300-3KPA
A3300-0A3300-30MMA3300-4CM
A3301A3000-15CMA3300-10CM
A3302A3000 20CMA3300-30CM
A3304A3000-25CMA3205
A3310A3000-50CMA3210**
A3320A3000-80CMA3215**
A3330A3000-100CMA3220**
A3201A3000-150CMA3230***
A3202A3000-200CMA3204
A3203A3000-250CMA3000-300CM


PDE AND BRE


if you are intersted in more Allen-Bradley product, Please feel free to contct below contact me :windy@hkxytech.com 


Windy Wang 
HONGKONG XIEYUAN TECH CO., LIMITED  
Add: 7-A16,Caishen Commercial Plaza,Hankou Railway Station,Wuhan,China
Tel: +86-27-8588 3233 | Fax:+86-27-8530 9780 | Mobile/Whatsapp :+86 15972199006 | Skype: windy@hkxytech.com
Mail: windy@hkxytech.com 
Website:  http://www.hkxytech.com/   | GMT/UTC +8



Related Products