Dwyer® 2002

Description

Select the Dwyer® magnehelic gage for high-accuracy - guaranteed within 2% of full scale and for the wide choice of 81 model available to suit your needs precisely. Using Dwyer® simple, frictionless magnehelic gage movement, it quickly indicates low air or non-corrosive gas pressures either positive, negative (vacuum) or differential. The design resists shock, vibration and over-pressures. No manometer fluid to evaporate, freeze or cause toxic or levelling problems. It's inexpensive, too. The magnehelic gage is the industry standard to measure fan and blower pressures, filter resistance, air velocity, furnace draft, pressure drop across orifice plates, liquid levels with bubbler systems and pressures in fluid amplifier or fluidic systems. It also checks gas air ratio controls and automatic valves and monitors blood and respiratory pressures in medical care equipment.

Dwyer® Magnehelic Differential Pressure Gauge, 2000 Series, 4 in Dial, 0 to 2 in-WC Measuring, +/-2 % Accuracy, 1/8 in Connection, FNPT Connection, IP67 Enclosure, Aluminum, Gray, 20 to 140 deg F

Features

• Easy to read gage through undistorted plastic face permits viewing from far away
• Patented design provides quick response to pressure changes means no delay in assessing critical situations
• Durable and rugged housing and high-quality components combine to provide long service life and minimized down time
• High-accuracy option is twice as accurate as the standard magnehelic gauge
• 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 provides mounting for helix, helix bearings and pointer shaft
• Jewelled bearings are shock-resistant mounted, 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
• Silicone rubber diaphragm with integrally molded O-ring is supported by front and rear plates, it is locked and sealed in position with a sealing plate and retaining ring, diaphragm motion is restricted to prevent damage due to overpressures
• Die-cast aluminum case is precision made and iridite-dipped to withstand 168 hr salt spray corrosion test, exterior finished in baked dark gray hammerloid, 1-case size is used for all standard pressure options and for both surface and flush-mounting
• O-ring seal for cover assures pressure integrity of case
• Samarium cobalt magnet-mounted at one end of range spring rotates helix without mechanical linkages
• Exterior finish is coated gray to withstand 168 hr salt spray corrosion test

Specifications

Documentation