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Order A3000-8CM-240VAC by Dwyer A3000 Photohelic Switch/Gage - US Mega Store

Dwyer . A3000-8CM-240VAC

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Attributes

Brand name, Manufacturer name, ManufacturerDwyer
Attribute00, Attribute16Air and non-combustible, compatible gases
Attribute01, Attribute170-8 cm w.c.
Attribute02, Attribute18±2% of FS at 70°F (21.1°C)
Attribute03, Attribute19-20" Hg. to 25 psig (-0.677 to 1.72 bar)
Attribute04, Attribute2020 to 120°F. (-6.67 to 48.9°C)
Attribute05, Attribute211/8" female NPT
Attribute06, Attribute224" (101.6 mm) dial face, 5" (127 mm) O.D. x 8-1/4" (209.55 mm)
Attribute07, Attribute234 lb (1.81 kg)
Attribute08, Attribute24Each setpoint has 2 Form C relays (DPDT)
Attribute09, Attribute25±1% of FS
Attribute10, Attribute2610A @ 240 VAC
Attribute11, Attribute27Screw terminals. Use 167°F (75°C) copper conductors only
Attribute12, Attribute28240 VAC, 50 Hz
Attribute13, Attribute29Diaphragm in vertical position
Attribute14, Attribute30Adjustable knobs on face
Attribute15, Attribute31CE, CSA, UL
AttributeKey00, AttributeKey16Service
AttributeKey01, AttributeKey17Range
AttributeKey02, AttributeKey18Accuracy
AttributeKey03, AttributeKey19Pressure Limits
AttributeKey04, AttributeKey20Temperature Limits
AttributeKey05, AttributeKey21Process Connections
AttributeKey06, AttributeKey22Size
AttributeKey07, AttributeKey23, Weight_AttribWeight
AttributeKey08, AttributeKey24Switch Type
AttributeKey09, AttributeKey25Repeatability
AttributeKey10, AttributeKey26Electrical Rating
AttributeKey11, AttributeKey27Electrical Connections
AttributeKey12, AttributeKey28Power Requirements
AttributeKey13, AttributeKey29Mounting Orientation
AttributeKey14, AttributeKey30Set Point Adjustment
AttributeKey15, AttributeKey31Agency Approvals
CategoryL1Process Control & Automation
CategoryL2Gauges
CategoryL3Pressure & Vacuum
CategoryL4Dwyer A3000-8CM-240VAC
ConditionNEW
Extra Product NameOrder A3000-8CM-240VAC by Dwyer A3000 Photohelic Switch/Gage - US Mega Store
Weight4
WeightUnitlbs
moq, multiple, tierMinQty11
MPN, SKUA3000-8CM-240VAC
qtyInStockContact Us
snippet<p><strong>Dwyer, A3000-8CM-240VAC, A3000 Photohelic 240 VAC Pressure Switch/Gage, Range 0-8 cm w.c. </strong> </p> <p>3-in-1 Indicating Gage, Lo-limit and Hi-limit Control </p> <p><strong>Photohelic&#174; Switch/Gages </strong> function as versatile, highly repeatable pressure switches combined with a precise pressure gage employing the time-proven Magnehelic&#174; gage design. The Photohelic&#174; switch/gage measures and controls positive, negative or differential pressures of air and compatible gases. 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. </p> <p><strong>Photohelic Sensing - How It Works </strong> 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. </p> <p><strong>Relay-Transformer Features </strong> 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. </p> <p><strong>Product Applications </strong> </p> <ul><li>Air Conditioner Systems </li> <li>Clean Rooms </li> <li>Fume Exhaust Systems </li> </ul> <p><strong>Features </strong> </p> <ul><li><strong>Bezel and front cover </strong> (with set point knobs and zero adjustment screw) removed to expose Photohelic&#174; switch/gage set point mechanism.Cover is clear polycarbonate plastic. </li> <li><strong>Gage pointer and light shutter </strong> 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. </li> <li><strong>Light shield </strong> effectively protects phototransistors from strong outside light sources yet allows free pointer movement. It also gives interior a clean"finished" look. </li> <li><strong>Optical limit switches </strong> are used for reliability and long service life. Attached directly to set pointers, they are individually aligned to assure precise switching accuracy. </li> <li><strong>Semi-Flexible drive shaft </strong> connects to set point knobs. </li> <li><strong>Zero adjustment screw </strong> connects to screw in cover to adjust zero pressure reading. </li> <li><strong>Plastic enclosure </strong> protects electronic components and electrical connections. </li> <li><strong>Polycarbonate connection </strong> or terminal board is self-extinguishing. </li> <li><strong>Glass epoxy printed circuit boards </strong> for durability and permanence. </li> <li><strong>Load relays </strong> are DPDT with latching feature for maximum application versatility. </li> <li><strong>Electronics </strong> are designed to operate on 50 Hz, 240 Volt current with 10% over or under voltage. </li> <li><strong>Switch set pointers </strong> show switch settings at all times. </li> <li><strong>Spring loaded friction clutch </strong> prevents operator damage of set point mechanism. </li> </ul> <p><strong>Approvals </strong> </p> <ul><li>CSA Certified - Industrial Control Equipment </li> <li>CSA Certified - Switches </li> <li>UL Approval - US </li> <li>CE </li> <li>GOST-R Certificate </li> </ul>
tierPrice1481.3

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