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1490 Low Pressure Diaphragm Gauge
Brand: Ashcroft Inc.The Ashcroft Type 1490 low pressure diaphragm gauge is designed to measure pressure from 10 in. H2O to 15 psi, both positive and negative pressures. This gauge uses a very sensitive diaphragm capsule to measure low pressure and vacuum.
The 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 polysulfone case is suitable for intermittent or continuous service on natural gas provided a 0.013 throttle plug is installed in the socket.
Typical applications are, but not limited to: vacuum pumps, gas leak detectors, air compressors, air filters, gas burners, gas measurement, vacuum ovens, suction regulators and respirators.
Features- 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
Specifications
Brand
Accuracy
- ± 2-1-2% of Full Scale (Grade A, ASME B40.100)
- 1%
Applications
- Air Compressors
- Filters
- Gas Measurement, Burners & Leak Detectors
- Specialized OEM Equipment
- Suction Regulators & Respirators
- Vacuum Ovens
- Vacuum Pumps
Approvals & Certifications
- ISO 9001
Burst Pressure
- psi: 0 to 100 (kPa: 0 to 689.5, bar: 0 to 7)
Element
- Sensing Element: Beryllium Copper Diaphragm
Enclosure, Body Material
- Glass-Filled Polysulfone
Lens
- Polycarbonate Lens
Materials of Construction
- Dial (White Background, Black Figures & Intervals) & Pointer (Black): Aluminum
- Socket: Brass
Movement
- Brass
Name Plate, Tag Material
- Paper
- Stainless Steel
NPT Connection
- 1/4" NPT Male
- 1/8" NPT Male
Operating Temperature
- -29° to 82.2° C (-20° to 180° F)
Pressure Range
- bar: 0 to 1
- Inches WC: -200 to 300
- kPa: 0 to 103.4
- psi: 0 to 15
Pressure Type
- Compound Pressure
- Gauge
- Vacuum
Proof Pressure
- 150% of Range
Size
- Dial: 2.5" (63 mm)
- Dial: 3.5" (89 mm)
Tube Connection
- 1/4" I.D. Tube
- 1/4" O.D. Tube
- 1/8" I.D. Tube
- 3/16" I.D. Tube
UNF/UNC Connection
- 10-32 UNF Male
Wetted Materials
- Beryllium Copper
- Brass
- Polysulfone
- Silicone
