Feature:
- Easy to read gage through undistorted plastic face permits viewing from far away
- Patented design provides a quick response to pressure changes, which means no delay in assessing critical situations
- Durable and rugged housing and high-quality components combine to provide long service life and minimized downtime
- High accuracy option is twice as accurate as the standard Magnehelic® gage.
- Bezel provides flange for flush mounting in panel.
- Clear plastic face is highly resistant to breakage. Provides undistorted viewing of pointer and scale.
- Precision litho-printed scale is accurate and easy to read.
- Red tipped pointer of heat-treated aluminum tubing is easy to see. It is rigidly mounted on the helix shaft.
- Pointer stops of molded rubber prevent pointer over-travel without damage.
- “Wishbone” assembly mounts helix, helix bearings and pointer shafts.
- Jeweled bearings are shock-resistant mounted; and provide virtually friction-free motion for helix. Motion damped with high-viscosity silicone fluid.
- Zero adjustment screw is conveniently located in the plastic cover, and is accessible without removing the cover. O-ring seal provides pressure tightness.
- Helix is precision made from an alloy of high magnetic permeability. Mounted in jeweled bearings, it turns freely, following the magnetic field to move the pointer across the scale.
- Calibrated range spring is flat spring steel. Small amplitude of motion assures consistency and long life. It reacts to pressure on diaphragm. Live length adjustable for calibration.
Application:
- Filter Monitoring
- Air Velocity with Dwyer Pitot Tube
- Blower Vacuum Monitoring
- Fan Pressure Indication
- Duct, Room or Building Pressures
- Clean Room Positive Pressure Indication
Specification
Service | Air and non-combustible, compatible gases (natural gas option available). Note: May be used with hydrogen. Order a Buna-N diaphragm. Pressures must be less than 35 psi. |
Wetted Materials | Consult factory. |
Housing | Die cast aluminum case and bezel with acrylic cover. Exterior finish is coated gray to withstand 168 hour salt spray corrosion test. |
Accuracy | ±1% FS (±1.5% on -0, -100PA, -125PA, -10MM and ±2% on -00, -60PA, -6MM ranges) throughout range at 70°F (21.1°C). |
Pressure Limits | -20 in Hg to 15 psig (-0.677 bar to 1.034 bar). |
Overpressure | Relief plug opens at approximately 25 psig (1.72 bar), standard gages only. See Overpressure Protection note on catalog page. |
Temperature Limits | 20 to 140°F (-6.67 to 60°C). |
Size | 4″ (101.6 mm) diameter dial face. |
Mounting Orientation | Diaphragm in vertical position. Consult factory for other position orientations. |
Process Connections | 1/8″ female NPT duplicate high and low pressure taps – one pair side and one pair back. |
Weight | 1 lb 2 oz (510 g). |
Standard Accessories | Two 1/8″ NPT plugs for duplicate pressure taps, two 1/8″ pipe thread to rubber tubing adapters, and three flush mounting adapters with screws. |
Agency Approvals | Meets the technical requirements of EU Directive 2011/65/EU (RoHS II). |