3100MR | Dwyer Instruments | Pressure Components
Pressure Switch/Gage, Range 0-100" W.C., 2.0 Minor Divisions
Brand:Dwyer Instruments
MPN:3100MR
SKU:3100MR
List Price:
$1,588.00
Today's Price:
$825.76
Log in for customized pricingproduct specifications
Direction
Uni-Directional
Measurement
Inches of Water Column
Media Compatibility
Liquid,Gas
Range
±100 in WC
Connection Size
1/8 in
Type
Adjustable
Contact Type
SPDT
Connection
NPT
Accuracy
2%
Housing Material
Metallic
Contact Rating
1 A
Override
Manual
Power Required
Switch
Dial Size
4.00 in Dial
Filling
Dry
Supply Voltage (Nominal)
24 VAC
Mount
Center Back
product series specifications
Supply Voltage: 24 VDC ±10%
Relay Type: (2) DPDT w/independent setpoints
Left needle SPDT: (C, NO, NC) Closes on pressure rise
Right needle SPDT: (C, NO, NC) Closes on pressure rise
Relay Rating: 1A @ 30 VDC, 0.3A @ 120 VAC, Gold plated
Setpoint (SP): Twin Knob adjustments with needle SP indicators
Dial Pressure Gauge: 4" half dial with graduations per order
Calibration: Zero adjust screw
Differential: 1% of full scale (approx. 1 pointer width)
Repeatability: ±1% of full scale
Accuracy: (Standard) ±2% of full scale @ 70°F (21°C), (-0) ±3% of full scale @ 70°F (21°C), (-00) ±4% of full scale @ 70°F (21°C)
Reset Automatic: Reset by differential
Visual Indication: Pressure dial and SP needle indication
Sensor Type: Silicone Diaphragm MNT vertically
Operating Pressure Range: Range dependent on unit ordered
Overpressure: (Burst/Proof) -20" Hg. to 25 psig (-2.29 to 1.72 kPa)
Operating Temperature: 20° to 120°F (-7° to 49°C)
Operating Humidity: Not specified
Wetted Parts: Silicone, aluminum, plastics, steel, paint and more
Media Compatibility: Inert dry air
Process Connection: Two (Hi & LO), 1/8" FNPT
Wiring Terminations: 18", 8 conductor Pig-tail @ 22 AWG
Mounting: Vertically, with 4 screws
Enclosure Rating: ABS and clear plastic face, NEMA 1, NEMA 4 with panel gasket
Dimensions: 5.0"W x 5.0"H x 2.5"D (12.7 x 12.7 x 6.35 cm)
Cutout Size: 4.75" (12.06 cm) diameter
Weight: 4.0 lb (1.81 Kg)
Approvals: CE
Warranty: 1 year
product series features
- Two independent DPDT switches, externally adjustable
- Dependable Magnehelic® pressure indication
- 2% F.S. accuracy
- Visible switch set points and pressure indication
- Easily accessible zero adjustment
- 4 in (10.2 cm) easy-to-read white dial
- Optional manual reset
- Optional remote mounting of switch assembly
- UL listed, CSA and CE certified
more information & related documents
Series Description
The Dwyer 3000MR Series Photohelic® differential pressure switch/gauge combines two versatile, precise pressure switches with a time-proven Magnehelic® pressure gauge. The gauge reading is unaffected by switch operation. External knobs are used to adjust the two DPDT switch set points. Switch set points (indicated by red pointers) and system pressure are fully visible at all times. Ranges are available from 0in to 0.25in W.C. up to 10'' W.C. full scale. The 3000MR Series may be ordered with the switch assembly remote mounted to facilitate panel mounting.
Kele Description
DIFF PRESS SW, ADJUST, 0-100.00" WC
Manufacturer
Dwyer Instruments
Related Documents
3000MR Installation and Operation Instructions 
