Photohelic® Switch/Gages Dwyer Series 3000MR & 3000MRS

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Product information

The Series 3000MR & 3000MRS Photohelic® Switch/Gages combine the functions of a precise Magnehelic® differential pressure gage with dual-setpoint pressure switches, utilizing non-contacting sensor technology for high-reliability control.

✔ Dual Functionality: Provides continuous visual pressure indication and electrical switching at two independent setpoints

✔ High Accuracy: Features ±2% full scale accuracy for dependable performance in cleanrooms and AHU systems

✔ Sensor Technology: Utilizes non-contacting photo-transistor technology to eliminate friction and extend life

✔ Relay Outputs: Built-in DPDT relays (120/240 VAC) for direct control of fans, motors, and alarm systems

✔ Easy Adjustment: Front-facing setpoint knobs allow for quick and easy configuration of pressure thresholds

DOWNLOAD SERIES 3000MR & 3000MRS CATALOG (PDF)

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🚚 Imported by bởi DLK TRADING SERVICE COMPANY LIMITED.
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Technical characteristics
Name of the product
Standard technical document

Detailed Specifications Series 3000MR & 3000MRS

Brand	DWYER (USA)
Service	Air and non-combustible, compatible gases
Accuracy	±2% of FS (±3% on -0; ±4% on -00) at 70°F (21.1°C)
Pressure Limits	-20" Hg to 25 psig (-0.677 bar to 1.72 bar)
Temperature Limits	20 to 120°F (-6.67 to 48.9°C)
Process Connections	1/8" female NPT (side and back duplicated)
Dial Size	4" (101.6 mm)
Switch Type (3000MR)	Each setpoint has 1 Form C relay (SPDT)
Switch Type (3000MRS)	Each setpoint has 1 solid state relay
Power Requirements	24 VDC, regulated ±10%

Complete Model Selection Chart: Series 3000MR & 3000MRS

Model (Relay Output)	Operating Range	Model (SSR Output)	Operating Range
3000MR-00	0 - 0.25 in w.c.	3000MRS-00	0 - 0.25 in w.c.
3000MR-0	0 - 0.5 in w.c.	3000MRS-0	0 - 0.5 in w.c.
3001MR	0 - 1.0 in w.c.	3001MRS	0 - 1.0 in w.c.
3002MR	0 - 2.0 in w.c.	3002MRS	0 - 2.0 in w.c.
3003MR	0 - 3.0 in w.c.	3003MRS	0 - 3.0 in w.c.
3005MR	0 - 5.0 in w.c.	3005MRS	0 - 5.0 in w.c.
3010MR	0 - 10 in w.c.	3010MRS	0 - 10 in w.c.
3015MR	0 - 15 in w.c.	3015MRS	0 - 15 in w.c.
3020MR	0 - 20 in w.c.	3020MRS	0 - 20 in w.c.
3030MR	0 - 30 in w.c.	3030MRS	0 - 30 in w.c.
3050MR	0 - 50 in w.c.	3050MRS	0 - 50 in w.c.
3100MR	0 - 100 in w.c.	3100MRS	0 - 100 in w.c.
3000MR-60PA	0 - 60 Pa	3000MRS-60PA	0 - 60 Pa
3000MR-125PA	0 - 125 Pa	3000MRS-125PA	0 - 125 Pa
3000MR-250PA	0 - 250 Pa	3000MRS-250PA	0 - 250 Pa
3000MR-500PA	0 - 500 Pa	3000MRS-500PA	0 - 500 Pa
3000MR-1KPA	0 - 1.0 kPa	3000MRS-1KPA	0 - 1.0 kPa
3000MR-3KPA	0 - 3.0 kPa	3000MRS-3KPA	0 - 3.0 kPa
3000MR-4KPA	0 - 4.0 kPa	3000MRS-4KPA	0 - 4.0 kPa
3000MR-6MM	0 - 6 mm w.c.	3000MRS-6MM	0 - 6 mm w.c.
3000MR-10MM	0 - 10 mm w.c.	3000MRS-10MM	0 - 10 mm w.c.
3000MR-25MM	0 - 25 mm w.c.	3000MRS-25MM	0 - 25 mm w.c.
3000MR-50MM	0 - 50 mm w.c.	3000MRS-50MM	0 - 50 mm w.c.
3000MR-100MM	0 - 100 mm w.c.	3000MRS-100MM	0 - 100 mm w.c.
3000MR-20CM	0 - 20 cm w.c.	3000MRS-20CM	0 - 20 cm w.c.