Control fans dampers pumps etc between the set points of a photohelic sgt. Box 373 michigan city indiana 46361 usa.
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Dwyer photohelic wiring diagram. Series a3000 photohelic switch pdf manual download. The photohelic switchgage measures and controls positive negative or differential pressures of air and compatible gases. In this typical application the load would be connected to the nc. Series a3000 photohelic differential pressure switchgage specifications installation and operating instructions bulletin b 33 a dwyer instruments inc. Dwyer photohelic wiring diagram wiring diagram is a simplified conventional pictorial representation of an electrical circuit. It shows the components of the circuit as simplified shapes and the faculty and signal links amid the devices.
Contacts of the right set point relay section a figure d. 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. Standard models are rated to 25 psig 17 bar with options to 35 24 or 80. The series mp mini photohelic differential pressure switchgage combines the time proven minihelic ii differential pressure gage with two spdt switching set points. The photohelic switchgage measures and controls positive negative or differential pressures of air and compatible gases. Gage reading is unaffected by switch operation.
To accomplish this use one setpoint relay to reset the other as shown in the wiring diagram fig. View and download dwyer instruments series a3000 photohelic installation and operating instructions online. Standard models are rated to 25 psig 17 bar with options to 35 24 or 80. To accomplish this use one set point relay to reset the other as shown in the wiring diagram figure g. The mini photohelic switchgage is designed to measure and control positive negative or differential pressures consisting of non combustible and non corrosive gases. 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 sp1 relay would be connected to the s2 reset terminals on the rear of the. 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. Contacts nc2 of the right set point relay sp2. 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. In this typical application the load for instance a fan would be connected to the nc. Switch setting is easy to adjust with large external knobs on the gage face.
Gallery of Dwyer Photohelic Wiring Diagram
