Dwyer 43000 Capsu-Photohelic Switch/Gages function as versatile, highly repeatable pressure switches combined with a precise pressure gage employing the time-proven Magnehelic® gage design. The Capsu-Photohelic® switch/gage employs an encapsulated sensing element for use with both liquids and gases at pressures of 500 psig (34 bar).
Optional cast brass case is available for water or water-based liquids. Two phototransistors actuated, DPDT relays are included for low/high limit control. Easy to adjust set point indicators are controlled by knobs located on the gauge face. Individual set point deadband is one pointer width — less than 1% of full scale. Setpoints can be interlocked to provide variable deadband — ideal for control of pumps.
Dwyer 43000 Capsu-Photohelic Features
- Gage capsule permits high-pressure usage with small differentials
- Zero and range adjustments outside of gage means no disassembly in normal service
- Time-proven, simple, frictionless movement that permits full scale readings as low as 0.5 in w.c.
- Photo-electronic relays provide fast-acting switching with variable deadband control for chatter-free operation
Application
- Pump control
- Pumping systems
- Waste water
- Compatible liquid or gas applications
Dwyer 43000 Capsu-Photohelic Specification
| Gage Specifications | |
| Service | Compatible gases and liquids. Brass case option required for water based liquids. |
| Wetted Materials | Consult factory. |
| Accuracy | ±3% of FS at 70°F (21.1°C). ±4% on 43215, 43220 and 43500. |
| Pressure Limits | -20 Hg to 500 psig (-0.677 to 34.5 bar). |
| Temperature Limits | 20 to 120°F (-6.67 to 48.9°C). Low temperature option available. |
| Process Connections | 1/4″ female NPT. |
| Size | 4″ (101.6 mm) dial face, 5″ (127 mm) OD x 9-3/16″ (233.36 mm). |
| Weight | 5 lb. 8 oz (2.49 kg). Brass 11 lb. 2 oz (5.05 kg). |
| Switch Specifications | |
| Switch Type | Each setpoint has 2 form C relays (DPDT). |
| Repeatability | ±1% of FS. |
| Electrical Rating | 10 A @ 120 VAC, 6 A @ 240 VAC, 60 Hz res. 10 A @ 28 VDC. |
| Electrical Connections | Screw terminals. |
| 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. |
Download Data Sheet: Series 43000 Capsu-Photohelic® Pressure Switch/Gage
Ref: dwyer-inst.com
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