DWYER 3000MR Series, PHOTOHELIC SWITCH/ GAGES

Dwyer Photohelic Series 3000MR Switch/ Gauge, Range 0-0.5 " WC, Electromechanical Relays Features Using solid state technology, the Series 3000MR and 3000MRS Photohelic switch/ gages 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. Switch setting is easy to adjust with large external knobs on the gage face. Gage reading is unaffected by switch operation - will indicate accurately even if power is interrupted. Solid state design now results in greatly reduced size and weight. Units can be flush mounted in 4-13/ 16 " ( 122 mm) hole or surface mounted with hardware supplied 3000MR models employ versatile electromechanical relays with gold over silver contacts - ideal for dry circuits Compatible with air and other non-combustible, non-corrosive gases, they can be used in systems with pressures to 25 psig ( 1.725 bar) GAGE SPECIFICATIONS Service: Air and non-combustible, compatible gases. Wetted Materials: Consult factory. Accuracy: ± 2% of FS at 70° F ( 21.1° C) . ± 3% on -0 and ± 4% on -00 models. Pressure Limits: -20 " Hg to 25 psig ( -0.677 bar to 1.72 bar) . MP option; 35 psig ( 2.41 bar) , HP option; 80 psig ( 5.52 bar) . Temperature Limits: 20 to 120° F. ( -6.67 to 48.9° C) . Process Connections: 1/ 8 female NPT ( duplicated side and back) . Size: 4 " ( 101.6 mm) dial face, 5 " ( 127 mm) O.D. x 3-1/ 8 " ( 79.38 mm) . Weight: 1.8 lb ( 816 g) . SWITCH SPECIFICATIONS 3000MR Switch Type: Each setpoint has 1 Form C relay ( SPDT) . Relay Contacts: ( resistive load) 1 Form C rated 1.0A @ 30 VDC, 0.3A @ 110 VDC or 0.5A @ 125 VAC. Gold over clad silver - suitable for dry circuits. Electrical Connections: 18 " ( 46 cm) cable assembly with 8 conductors. Optional lengths to 100´ ( 30.5 m) . Power Requirements: 24 VDC, regulated ± 10% . Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations. Set Point Adjustment: Adjustable knobs on face. Agency Approvals: CE.