Dwyer 3000MR 3000MRS Series Photohelic® differential pressure gauge with switch control
Solid-state technology Photohelic differential pressure switch/gauge, MR is electromechanical relay, MRS is solid-state relay suitable for high cycling.
- Original Factory Genuine, Tenfold Compensation for Counterfeits
- Full Machine Warranty, Lifetime Maintenance
- In Stock, Shipped on the Same Day
The 3000MR/3000MRS uses solid-state switching technology, combining a high-repeatability differential pressure switch with a large-dial pointer gauge in one unit, significantly smaller and lighter than conventional Photohelic. The MR type is an electromechanical relay (gold alloy contacts), and the MRS type is an SPST solid-state relay, suitable for high-frequency actuation applications.
| Parameter Name | Technical Specifications |
|---|---|
| Main specifications | |
| Medium | Air and non-combustible, compatible gases |
| Material | Please consult the manufacturer |
| Accuracy | ±2% of full scale (3000-0 ±3% of full scale), (3000-00 +4% of full scale) |
| Pressure range | -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 Range | 20~120°F (-6.67~48.9°C) |
| Connections | 1/8" NPT female thread (same on side and back) |
| Size | Dial cover 4" (101.6 mm), 5" (127 mm) inner diameter x 3-1/8" (79.38 mm) |
| Weight | 1.8 lb (816 g) Switch Technical Specifications 3000MR: |
| Switch type | 1 C relay (SPDT) per set point |
| Relay contacts | 1 C rated 1.0A @ 30 VDC, 0.3A @ 110 VDC or 0.5A @ 125 VAC, gold-plated fine silver contacts – for dry circuits Electrical connection: 18" (46 cm) cable assembly with 8 conductors. Optional lengths up to 100" (30.5 m) |
| Power Supply | 24 VDC, ±10% Calibration |
| Installation positioning | Diaphragm for vertical orientation. Consult factory for other mounting orientations |
| Set Point Adjustment | Surface-adjustable knob mechanism |
| Certification | CE Switch Technical Specifications 3000MRS: |
| Model selection | |
| Selection table | 官网以选型表截图发布，完整型号与量程见资料包内官方手册《3000MR_3000MRS.i.pdf》 |
- Solid-state switch design, compact and lightweight
- MR type electromechanical relay (gold alloy contacts), suitable for dry circuits
- MRS type SPST solid-state relay, suitable for high cycling frequencies
- Gauge reading unaffected by switch actuation; remains accurate when power is off
- Panel mount or surface mount, mounting accessories included
High-frequency differential pressure switching applications
For example, pulse-jet dust cleaning and fan systems with frequent start/stop; select the MRS solid-state relay type.
Cleanroom high/low limit alarm
Provides both low-limit and high-limit control, connect to alarm or interlock circuits.
Need selection advice or bulk quotation?
Send us the working condition parameters (signal type, medium, range, pressure, temperature, connection method), and our engineers will provide a selection scheme and quotation within 1 working day.
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