Dwyer MAGNEHELIC® differential pressure gage / 2300-00

MAGNEHELIC® DIFFERENTIAL PRESSURE GAGES
Indicate Positive, Negative or Differential, Accurate within 1%

Select the SERIES 2000 Magnehelic® Gage for a versatile low differential pressure
gage with a wide choice of 81 models and 27 options to choose from. Using Dwyer’s
simple, frictionless Magnehelic® gage movement, it quickly indicates air or noncorrosive gas pressures–either positive, negative (vacuum) or differential. The design
resists shock, vibration, over-pressures and is weatherproof to IP67.
Select the –HA High Accuracy Magnehelic® gage option for an accuracy within 1%
of full scale. Also included with the –HA option at no extra cost are a mirrored scale
overlay and a 6 point calibration certificate.

FEATURES/BENEFITS
• 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 longservice life and minimized down-time
• High accuracy option is twice as accurate as the standard Magnehelic® gage

APPLICATIONS
• Filter monitoring
• Air velocity with Dwyer pitot tube
• Blower vacuum monitoring
• Fan pressure indication
• Duct, room or building pressures
• Clean room positive pressure indication

SPECIFICATIONS
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: ±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).
Pressure Limits: -20 in Hg to 15 psig†
(-0.677 to 1.034 bar); MP option: 35 psig
(2.41 bar); HP option: 80 psig (5.52 bar).
Enclosure Rating: IP67.
Overpressure: Relief plug opens
at approximately 25 psig (1.72 bar),
standard gages only.u
Temperature Limits: 20 to 140°F*
(-6.67 to 60°C). -20°F (-28°C) with low
temperature option.
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), MP & HP 2 lb
2 oz (963 g).
Standard Accessories: Two 1/8˝ NPT
plugs for duplicate pressure taps, two
1/8˝ pipe thread to rubber tubing adapter,
and three flush mounting adapters with
screws. (Mounting and snap ring retainer
substituted for three adapters in MP &
HP gage accessories.)
Agency Approvals: Meets the technical
requirements of EU Directive 2011/65/EU
(RoHS II). Note: -SP models not RoHS
approved.