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Dwyer A3000 Photohelic Pressure Switch - PSI
Rp.21.042.600
- Availability:
- 2 - 4 WEEKS
- Product Code:
- A32
- Brand:
- Dwyer Instruments
- Update Terakhir:
- 26 Jun 2023
-
Free delivery
-
Money back guarantee
Dwyer A3000 Photohelic Switch / Gauges function as versatile, highly repeatable pressure switches combined with a precise pressure gauge employing time-proven Magnehelic gauge design. The A3000 measures and controls positive, negative or differential pressures of air and compatible gases. The A3000 can be ordered in ranges up to 150 inH2O, 30 psi, 8 kPa, 80 mmH2O, or 80 cmH2O and are accurate up to ±2% of FS at 70°F. Some bidirectional ranges are also available.
The Dwyer A3000 includes two phototransistor actuated, DPDT relays for low/high limit control. Easy to adjust set point indicators are controlled by knobs located on the gauge face. In typical applications, these Dwyer switch/gauges control between high and low pressure set points. When pressure changes, reaching either set point pressure, the infrared light to the limiting phototransistor is cut off by the helix-driven light shutter. The resulting phototransistor signal is electronically amplified to actuate its DPDT slave relay and switching occurs. Dead band between make and break is 1% of full scale or less - just enough to assure.
Tags:
- 3-in-1 Indicating Gauge, Lo-Limit and Hi-Limit Control
- For use with air and non-combustible gases
- Ranges: to 150 inH2O, 30 psi, 8 kPa, 80 mmH2O, or 80 cmH2O. Some bidirectional ranges available
- Accuracy: up to ±2% of FS at 70°F
- 1/8" female NPT process connection
- Zero adjustment screw
- 4" dial face
- Pressure Switches: 2 Form C relays (DPDT) for each setpoint
- Set Point Adjustment: Adjustable knobs on face
- Repeatability: ±1% of FS
- CE, CSA, UL approved. Optional-EXPL explosion-proof enclosure does not possess any agency approvals
- GAGE SPECIFICATIONS:
- Service: Air and non-combustible, compatible gases.
- Wetted Materials: Consult factory.
- Accuracy: ±2% of FS at 70°F (21.1°C). ±3% on -0 and ±4% on -00 models.
- Pressure Limits: -20˝ Hg to 25 psig (-0.677 to 1.72 bar); MP option: 35 psig (2.41
- bar); HP option: 80 psig (5.52 bar).
- Temperature Limits: 20 to 120°F (-6.67 to 48.9°C). Low temperature option available.
- Process Connections: 1/8˝ female NPT.
- Size: 4˝ (101.6 mm) dial face, 5˝ (127 mm) OD x 8-1/4˝ (209.55 mm).
- Weight: 4 lb (1.81 kg).
- SWITCH SPECIFICATIONS:
- Switch Type: Each setpoint has 2 form C relays (DPDT).
- Repeatability: ±1% of FS.
- Electrical Rating: 10 A @ 28 VDC, 10 A @ 120, 240 VAC.
- Electrical Connections: Screw terminals. Use 167°F (75°C) copper conductors only.
- Power Requirements: 120 VAC, 50/60 Hz; 240 VAC & 24 VAC power optional.
- Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations.
- Set Point Adjustment: Adjustable knobs on face.
- Agency Approvals: CE, CSA, UL.
- (1) A3000 Photohelic Pressure Switch, psi
- (1) Instruction manual
Brochure/Datasheet Download
Note: Prices are not binding at any time subject to change without prior notice
