Dwyer Omega – Series 3000MR-3000MRS Photohelic® Switch/Gages, Differential Pressure, 25 psig Max, Compact
Product Code: Series 3000MR-3000MRS
Manufacturer: Dwyer Omega
Using solid state technology, the Series 3000MR/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-inch (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″ (45 cm) cable assembly
- (2) 3/16″ tubing to 1/8″ NPT adapters
- (2) 1/8″ NPT pipe plugs
- (4) 6-32 x 1-1/4″ RH machine screws (panel mounting)
- (3) 6-32 x 5/16″ RH machine screws (surface mounting)
Accuracy Detail
± 2% of FS (3000-0 ± 3% of FS). (3000-00 ± 4% of FS)
Compliance
CE
Dial Depth
3.125 in
Dial Dia
4 in
Dial Outer Diameter
5 in
Electrical Connection
Cable
Materials, Wetted
Consult Factory
Media Compatibility
Air, Argon, Carbon dioxide, Helium, Nitrogen, Non-Corrosive Dry Gases
Mounting Orientation
Vertical Diaphragm
Operating Temperature, Max
120 °F
Operating Temperature, Min
20 °F
Measurement Pressure, Min
0 inH₂O
Measurement Pressure Type
Differential
Process Connection Note
1/8˝ female NPT (duplicated side and back)
Process Connection Size
1/8 in
Process Connection Type
NPT Female
Proof Pressure
-20 inHg to 25 psi
Set Point Adjustment
Adjustable Knobs
Supply Power Note
24 Vdc, regulated ± 10%
Supply Power Type
DC
Supply Voltage
24 Vdc
Weight
1.8 lb
- 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
