Dwyer

3000MR(S) Photohelic Switch/Gage

Highly repeatable differential pressure switch with a large easy-to-read analog pressure gage, easily adjustable switch setting,

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$549.00 CAD
Normally ships in 2-3 Weeks

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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 or surface mounted with hardware supplied. 3000MR models employ versatile electromechanical relays with gold over silver contacts - ideal for dry circuits. For applications requiring high cycle rates, choose 3000MRS models with SPST (N.O.) solid state relays. All models provide both low and high limit control and include 18 in (45 cm) cable assemblies for electrical connections.

Compatible with air and other non-combustible, non-corrosive gases, they can be used in systems with pressures to 25 PSIG (1.725 Bar). Optional construction is available for use to either 35 PSIG (2.42 Bar) or 80 PSIG (5.51 Bar).

Included Accessories: Mounting ring, snap ring, 18 in (45 cm) cable assembly, two (2) 3/16 in tubing to 1/8 in NPT adapters, two (2) 1/8 in NPT pipe plugs, four (4) 6-32 x 1-1/4 in RH machine screws (panel mounting), and three (3) 6-32 x 5/16 in RH machine screws (surface mounting).

• Gage reading unaffected by switch operation and will continue to read pressure even during power loss
• Zero and range adjustments outside of gage means no disassembly in normal service
• Solid-state design allows for switching in high cycle rate applications without degradation

 

GAGE SPECIFICATIONS
Service Air and non-combustible, compatible gases
Wetted Materials Consult factory
Accuracy 2% of FS (3000-0 3% of FS). (3000-00 4% of FS)
Pressure Limit -20 in Hg - 25 PSIG (-0.677 Bar - 1.72 Bar).
MP option: 35 PSIG (2.41 Bar);
HP option: 80 PSIG (5.52 Bar)
Temperature Limits 20F - 120F (-6.67C - 48.9C)
Process Connections 1/8 in female NPT (duplicated side and back)
Size 4 in (101.6 mm) dial face, 5 in (127 mm) OD x 3-1/8 in (79.38 mm)
Weight 1.8 Ib (816 g)
SWITCH SPECIFICATIONS 3000MR
Switch Type Each setpoint has 1 form C relays (SPDT)
Relay Contacts (Resistive load) 1 form C rated 1.0A @ 30 VDC, 0.3 A @ 110 VDC or 0.5 A @ 125 VAC. Gold over clad silver - suitable for dry circuits
Electrical Connections 18 in (46 cm) cable assembly with 8 conductors. Optional lengths to 100 ft (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
SWITCH SPECIFICATIONS 3000MRS
Switch Type Each setpoint has a solid state relay
Switching Voltage 20 VAC - 280 VAC (47 Hz - 63 Hz)
Switching Current 1.0 A (AC) max., 0.01 mA (AC) min., (2) SPST NO
Electrical Connections 18 in (46 cm) cable assembly with 6 conductors, optional lengths to 100 ft (30.5 m)
Power Requirements 24 VDC, regulated 10%
Mounting Orientation Diaphragm in vertical position
Set Point Adjustment Adjustable knobs on face
Agency Approvals CE

• Pneumatic conveying
• Air conditioning systems
• Clean rooms

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