Dwyer photohelic wiring diagram 3000mrs photohelica manualzz com dwyer photohelic wiring diagram wiring diagram is a simplified conventional pictorial representation of an electrical circuit. Series a3000 photohelic differential pressure switchgage specifications installation and operating instructions bulletin b 33 a the series a3000 photohelic switchgage is a versatile 2 in 1 instrument combining a time proven magnehelic differential pressure gage with lowhigh pressure switches.
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Dwyer photohelic 3000mr wiring diagram. Using solid state technology the series 3000mr and 3000mrs photohelic switchgages combine the functions of a precise highly repeatable differential pressure switch with a large easy to read analog pressure gage employing the durable time proven magnehelic gage design. It shows the components of the circuit as simplified shapes and the faculty and signal links amid the devices. To accomplish this use one set point relay to reset the other as shown in the wiring diagram figure g. Combines differential pressure gage with lowhigh set points. Using solid state technology the series 3000mr3000mrs photohelic switchgages combine the functions of a precise highly repeatable differential pressure switch with a large easy to read analog pressure gage employing the durable time proven magnehelic gage design. Extension cords with 7 pin plugs and receptacles are available from dwyer for interconnection of the two units.
The photohelic pressure switchgage may be mounted as an integral package or the amplifier load relay assembly and housing may be mounted remotely from the indicating gage phototransistor unit. The photohelic switchgage measures and controls positive negative or differential pressures of air and compatible gases. Using solid state technology the series 3000mr photohelic switchgage combines the functions of a precise highly repeat able differential pressure switch with a large easy to read analog pressure gage employing the durable time proven magnehelic. In this typical application the load for instance a fan would be connected to the nc. For dc circuits also include a 1n4005 diode. Control fans dampers pumps etc between the set points of a photohelic sgt.
Specify dwyer instruments inc. Standard models are rated to 25 psig 17 bar with options to 35 24 or 80. Switch setting is easy to adjust with large external knobs on the gage face. The series a3000 photohelic switchgages function as versatile highly repeatable pressure switches combined with a precise pressure gage employing the time proven magnehelic gage design. Contacts of the right set point relay section a figure d. Gage reading is unaffected by switch operation.
Home dwyer instruments. Photohelic switchgages combines differential pressure gage with lowhigh set points compact size 42 dwyer instruments inc.
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