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Series-2000-Magnehelic
Low Differential Pressure Gauge – No Power Needed, IP67
Models In Stock
- Easy to read gage through undistorted plastic face
- Patented design provides quick response to pressure changes
- Durable and rugged housing and high-quality components for long service life
- Bezel provides flange for flush mounting in panel.
- 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.
- Jeweled 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 hour salt spray corrosion test. Exterior finished in baked dark gray hammerloid. One 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.
Series-2000-Magnehelic
From
$
88.10
Models In Stock

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Product Overview
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Accuracy Detail
± 2% (-HA model ± 1) of FS (± 3% (-HA ± 1.5%) on -0, -100PA, -125PA, -10MM and ± 4% (-HA ± 2%) on -00, -60PA, -6MM ranges), throughout range at 70°F (21.1°C).
- Dial Dia 4 in
- Enclosure Ratings IP67
- Materials Aluminum, Acrylic
- Materials, Wetted Consult Factory
- Media Compatibility Air, Argon, Carbon dioxide, Helium, Nitrogen, Non-Corrosive Dry Gases
- Mounting Orientation Vertical Diaphragm
- Pressure Limits -20 inHg to 15 psig
- Measurement Pressure Type Differential
- Process Connection Note 1/8˝ female NPT duplicate high and low pressure taps - one pair side and one pair back.
- Process Connection Size 1/8 in
- Process Connection Type NPT Female
- Safety Features Relief plug opens at approximately 25 psig (1.72 bar), standard gages only.
- Weight 510 g
The Series 2000 Magnehelic® Differential Pressure Gauge offers an easy-to-read, reliable solution for monitoring low differential air and non-corrosive gas pressures—without requiring any power source. Its precision diaphragm and magnetic movement system translate small pressure differences into consistent mechanical readings, delivering dependable performance across a wide range of HVAC and process applications.
Encased in a durable die-cast aluminum housing and sealed to an IP67 rating, the Magnehelic gauge stands up to dusty or wet environments, making it suitable for both indoor and outdoor installations. Its clear, full-scale analog display allows for fast pressure assessment at a glance, with overpressure protection built in for added safety.
Widely trusted in clean rooms, air handling systems, filter monitoring, and industrial process control, the Series 2000 balances rugged construction with ease of use. With no need for electrical power or complex setup, it remains a go-to pressure monitoring solution for dependable, maintenance-free performance."
Accessories
accessories
3-way vent valve, plastic, 1/8" NPT to 1/4" metal tubing, 80 psi rating, replaces former Model A-310 (brass). 2.3" x .8" x .1", .10 lb.
$28.00
411 In Stock
Instrument enclosure, 304SS, brushed finish, compatible with 2000 Magnehelic® gage
$978.00
0 In Stock
Weatherproof enclosure, ABS, compatible with Series 2000 Magnehelic®, includes 2 sections of precut silicone tubing, banjo fittings, and threaded pressure connections pre-installed.
$283.95
12 In Stock
Instrument enclosure, 304SS, brushed finish, compatible with 2000 Magnehelic® gage, DM-2000 differential pressure transmitter
$988.90
8 In Stock
Weatherproof enclosure, ABS, compatible with Series 3000MR/MRS Photohelic®, Series 605 Magnehelic®, Series DH3 Digihelic® (to fit, the casing on the electrical plug must be removed), Series 2000 Magnehelic® with medium and high pressure options
$380.45
0 In Stock
Weatherproof enclosure, ABS, compatible with Series 2000 Magnehelic®, DM-1000 DigiMag®, DM-2000, Series 605 (with -SS option), instruments with backwards compatible bezel option
$380.45
0 In Stock
Brass safety relief valve, protects Magnehelic® gage or Photohelic® switch/gage against over pressure due to regulator failure, etc, opens at 10 psi. Mounts in tee fitting. 1/4" NPT(M) (use two for DP application). .5" x .5" x 1.5", .10 .lb
$66.85
3 In Stock
Plastic carrying case for Magnehelic® gage of standard range, except high pressure connection, includes 9 ft (2.7m) of 3/16" ID rubber tubing, stand-hang bracket & terminal tube with holder. 9.1" x 7.4" x 3.6", 1.30 .lb
$74.70
104 In Stock
Air filter kit - adapts any standard Magnehelic® gage for use as an air filter gage. Includes aluminum surface mounting bracket with screws, (2) 5 ft (1.5 m) lengths of 1/4" aluminum tubing, (2) static pressure tips & (2) molded plastic vent valves.
$58.20
14 In Stock
Air filter kit with (2) plastic open/close valves, (2) 4 in steel static tips, tubing and mounting flange
$45.90
0 In Stock
Air filter kit with (2) plastic open/close valves, (2) plastic static tips, tubing and mounting flange
$36.10
0 In Stock
consumables
Silicone rubber gasket for panel mounting (Series 2000, DM-2000, DM-1000, 605)
$6.45
2534 In Stock
installation hardware
Mounting hardware kit for standard Magnehelics® (not MP or HP). Included in the kit: 2 each: A-339 adapters, A-330 pipe adapters 3 each: mounting lugs, long screws, short screws)
$14.55
66814 In Stock
Mounting bracket flush mount Magnehelic® gage in bracket. Bracket is then surface mounted . Steel with gray hammertone epoxy finish. 6.3" x 7.7" x 4.0", 1.30 lb.
$48.70
0 In Stock
Flat aluminum bracket for flush mounting Magnehelic® gage. 6.8" x 6.0" x .1", .35 lb.
$42.80
5 In Stock
Surface mounting bracket, use with Photohelic® switch/gage on horizontal or vertical surfaces, also for Capsu-Photohelic® switch/gage on vertical only. Also Magnehelic® -MP, -HP models.
$61.00
7 In Stock
3-piece magnet kit for mounting Magnehelic® gage directly to a magnetic surface, 3.3 in x 1.7 in x 0.5 in, 0.20 lb
$17.35
0 In Stock
Stainless steel flush mounting kit for the Magnehelic® gages (Magnehelic® sold separately)
$153.60
0 In Stock