Ashcroft 1490 Industrial Low Pressure Diaphragm Gauge

Ashcroft 1490 Industrial Low Pressure Diaphragm Gauge

Industrial Pressure Measurement & Monitoring

Ashcroft Instruments 1490 low pressure diaphragm gauge is designed to measure pressure from 10 in. H2O to 15 psi, both positive and negative pressures. 

The 1490 low pressure diaphragm gauge uses a very sensitive diaphragm capsule to measure low pressure and vacuum. 

Ashcroft’s pressure gauge is specifically designed for use whenever the pressure medium is a gas that is not corrosive to beryllium copper, brass, polysulfone and RTV silicone. 

The 1490 diaphragm gauge has a polysulfone case which is suitable for intermittent or continuous service on natural gas provided a .013" throttle plug is installed in the socket. 

Ashcroft’s low pressure diaphragm gauge is suitable for applications such as vacuum pumps, gas leak detectors, air compressors, air filters, gas burners, gas measurement, vacuum ovens, suction regulators and respirators amongst others.

Ashcroft Instruments 1490 Industrial Low Pressure Diaphragm Gauge – Features & Benefits

  • 2.5" and 3.5" dial size
  • Glass-filled polysulfone case material, won't rust or dent
  • Beryllium  copper diaphragm
  • Brass socket
  • Wetted materials of beryllium copper, brass, polysulfone and RTV silicone
  • Exclusive autoclavable feature
Ashcroft Instruments 1490 Industrial Low Pressure Diaphragm Gauge – Technical Specification
Model Number 1490
Accuracy +/-2%-1-2% full scale (Grade A ASME B40.100)
Ranges 10 in. H20 through 15psi including vac. and compound
Dial Size 2.5" and 3.5" diameter
Case Material Black, glass filled polysulfone
Socket Material Brass
Movement Brass
Sensing Element Beryllium copper diaphragm
Wetted Material Beryllium copper, brass, polysulfone and RTV silicone
Window Polycarbonate, quarter turn bayonet style mounting
Dial Aluminium, white background, black figures and intervals
Pointer Black, aluminium, fixed
Connection Size

1/5" NPT (01)

1/4" NPT (02)

1/5" tubing hose barb (HD)

3/16" tubing hose barb (HE)

1/4" tubing hose barb (HF)

1/4" O.D polytube hose barb (HG)

10-32 2B female thread (HH)

Connection Location

Lower (L)

Center Back (B)

Top (T)

3 o'clock (D)

9 o'clock (E)

Operating Temperature -20 to 180ºF
Proof Pressure 150% of range
Burst Pressure

Up to 5 psi = 50 psi

Greater than 5 psi = 100 psi

Optional Features  
1% Accuracy XAN
Dial Marking XDA
Stainless Steel Tag XNH
Paper Tag XNN
Throttle Plug XTU
Throttle Screw XTS
U-Clamp XUC
FlutterGuard XZY

 

Ashcroft 1490 Industrial Low Pressure Diaphragm Gauge

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Ashcroft 1490 Industrial Low Pressure Diaphragm Gauge
Ashcroft 1490 Industrial Low Pressure Diaphragm Gauge

Heat Tracing - Thorne & Derrick