{"product_id":"a3000-dwyer®-photohelic-differential-pressure-switch-gauge-series-a3000","title":"A3000 | Dwyer® Photohelic Differential Pressure Switch Gauge Series A3000","description":"\u003cp\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e: Photohelic Differential Pressure Switch Gauge Series A3000\u003cbr\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e: New\u003cbr\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e: Dwyer®\u003cbr\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e: A3000 \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"attrib\"\u003e\u003cstrong\u003eAccuracy Detail\u003c\/strong\u003e\u003cbr\u003e± 2% of FS at 70°F (21.1°C). ± 3% on -0 and ± 4% on -00 models\u003cbr\u003e\u003cstrong\u003eCompliance\u003c\/strong\u003e\u003cbr\u003eCE, CSA, UL\u003cbr\u003e\u003cstrong\u003eDial Depth\u003c\/strong\u003e\u003cbr\u003e8.25 in\u003cbr\u003e\u003cstrong\u003eDial Dia\u003c\/strong\u003e\u003cbr\u003e4 in\u003cbr\u003e\u003cstrong\u003eDial Outer Diameter\u003c\/strong\u003e\u003cbr\u003e5 in\u003cbr\u003e\u003cstrong\u003eDivision\u003c\/strong\u003e\u003cbr\u003e0\u003cbr\u003e\u003cstrong\u003eElectrical Connection\u003c\/strong\u003e\u003cbr\u003eScrew Terminal\u003cbr\u003e\u003cstrong\u003eMaterials, Wetted\u003c\/strong\u003e\u003cbr\u003eConsult Factory\u003cbr\u003e\u003cstrong\u003eMedia Compatibility\u003c\/strong\u003e\u003cbr\u003eAir, Argon, Carbon dioxide, Helium, Nitrogen, Non-Corrosive Dry Gases\u003cbr\u003e\u003cstrong\u003eMounting Orientation\u003c\/strong\u003e\u003cbr\u003eVertical Diaphragm\u003cbr\u003e\u003cstrong\u003eOperating Temperature, Max\u003c\/strong\u003e\u003cbr\u003e120 °F\u003cbr\u003e\u003cstrong\u003eOperating Temperature, Min\u003c\/strong\u003e\u003cbr\u003e20 °F\u003cbr\u003e\u003cstrong\u003ePressure Type\u003c\/strong\u003e\u003cbr\u003eDifferential\u003cbr\u003e\u003cstrong\u003eProcess Connection Size\u003c\/strong\u003e\u003cbr\u003e1\/8 in\u003cbr\u003e\u003cstrong\u003eProcess Connection Type\u003c\/strong\u003e\u003cbr\u003eNPT Female\u003cbr\u003e\u003cstrong\u003eProof Pressure\u003c\/strong\u003e\u003cbr\u003e-20 inHg to 25 psi\u003cbr\u003e\u003cstrong\u003eRepeatability\u003c\/strong\u003e\u003cbr\u003e± 1%\u003cbr\u003e\u003cstrong\u003eSet Point Adjustment\u003c\/strong\u003e\u003cbr\u003eAdjustable Knobs\u003cbr\u003e\u003cstrong\u003eSupply Power Note\u003c\/strong\u003e\u003cbr\u003e120 VAC, 50\/60 Hz; 240 VAC and 24 VAC power optional\u003cbr\u003e\u003cstrong\u003eSupply Power Type\u003c\/strong\u003e\u003cbr\u003eAC\u003cbr\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003cbr\u003e120 Vac\u003cbr\u003e\u003cstrong\u003eSwitch Note\u003c\/strong\u003e\u003cbr\u003eEach set point has 2 form C relays (DPDT). 10 A @ 28 VDC, 10 A @ 120, 240 VAC\u003cbr\u003e\u003cstrong\u003eSwitch Rating\u003c\/strong\u003e\u003cbr\u003e10 A @ 28 Vdc, 10 A @ 120, 240 Vac\u003cbr\u003e\u003cstrong\u003eSwitch Type\u003c\/strong\u003e\u003cbr\u003e(2) DPDT\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer information\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003ePhotohelic® 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).\u003c\/p\u003e\n\u003cp\u003ePhotohelic Sensing – How It Works\u003cbr\u003eIn 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.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003cbr\u003eFirst Truck Parts offers a \u003cstrong\u003e365-days\u003c\/strong\u003e warranty for all types of parts and in any condition. The warranty applies only to buyers who have placed an order on our website.\u003c\/p\u003e\n\u003c!----\u003e","brand":"Dwyer®","offers":[{"title":"Default Title","offer_id":46382584332532,"sku":"A3000","price":349.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/1479\/5764\/files\/s-l1600_20_830a7cd5-a971-4e90-892c-eb05b3297c22.webp?v=1729089593","url":"https:\/\/firsttruckparts.com\/en-ca\/products\/a3000-dwyer%c2%ae-photohelic-differential-pressure-switch-gauge-series-a3000","provider":"First Truck Parts","version":"1.0","type":"link"}