PDFPrintE-mail
Dwyer-Capsuhelic Differential Pressure Gages

Dwyer-Capsu-Photohelic Pressure Switch-Gauges

( Dwyer )

Feature:

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® gage employs an encapsulated sensing element for use with both liquids and gases at pressures to 500 psig (34 bar). Optional cast brass case is available for water or water based liquids.

Two phototransistor actuated, DPDT relays are included for low/high limit control. Easy to adjust setpoint indicators are controlled by knobs located on the gage face. Individual setpoint deadband is one pointer width — less than 1% of full scale. Set-points can be interlocked to provide variable deadband — ideal for control of pumps, etc.

Specifications:

Gauge Specifications

Service

Compatible gases and liquids. Brass case option required for water based liquids.

Wetted Materials

Chat with Agent

Accuracy

±3% of full scale at 70°F (21.1°C). ±2% on 43000S models; ±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) O.D. 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 full scale.

Electrical Rating

10A @ 120 VAC, 6A @ 240 VAC, 60 Hz res. 10A @ 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.