The Ashcroft precision pressure gauge yields consistent, reliable accuracy through the use of state-of-the-art precision machining and the world’s most refined bourdon tube technology. This eliminates the need for a power source and precludes the associated problems such as susceptibility to electronic line noise, power outage or potential fire hazard. In addition, this mechanical instrument is simple to operate, easy to troubleshoot, and can be readily flushed or purged to remove foreign matter or trapped gas. Accurate and reliable, the Ashcroft A4A sets a new standard for precision test gauges.
Specifications
Accuracy: ±0.1% of Span Includes Calibration Certificate Traceable to NIST. Meets requirements of MIL-STD-45662 and ASME B40.1 Grade 4A Repeatability: ±0.02% of Span Hysteresis: <0.1% of Span (1) Sensitivity: 0.01% of Span Pressure Ranges: 0/15 psi through 0/100,000 psi ˝Unitized˝ Bourdon Tube Materials Pressure Ranges: Beryllium Copper 0/15 psi thru 0/40 psi 403 SS 0/50 psi thru 0/100,000 psi Standard Pressure Inlet Type & Location: 1⁄4 NPT Female – Back Connect 0/15 psi thru 0/10,000 psi 9⁄16-18 UNF-2B Female – Back Connect Over 10,000 through 100,000 psi White Dial, Knife-Edge Pointer, Mirror Ring: Available Dial Sizes 6˝ 8.5˝ 12˝ 16˝ Scale Length 18˝ 25˝ 31.5˝ 43.25˝ Pointer Travel 350°* *Ranges over 30,000 psi have less travel OPTIONAL FEATURES ˝Unitized˝ Bourdon Tube Materials/Pressure Ranges: Beryllium Copper 0/50 psi through 0/10,000 psi 403 0/15 psi through 0/40 psi Optional Pressure Inlet Type and Location: (Specify type and location) 1⁄4 NPT Female Bottom 1⁄8 NPT Male or Female–Back or Bottom 1⁄4 NPT Male or Female–Back or Bottom 9⁄16-18 UNF-2B Female for 1⁄4˝ HP Tubing MS33649-4 Female Only–Back or Bottom MS33656-4 Male Only–Back or Bottom MS-16142 Female Only–Back or Bottom Mil-G-18997D Male Only–Back or Bottom Dual Scale: For example, psi & inches of mercury or inches of water & kPa Optional Pressure Types: Absolute, Vacuum, Compound(2) Bimetallic Temperature Compensator: Eliminates temperature errors from –25°F to +125°F(3) Other Engineering Units/Special Scales: For example, tons on ram Slotted Link: Protects gauge from damage due to sudden pressure release Peak Load Indicator: Tracks the maximum indicated pressure measurement Wall Mounting Brackets: Provides simplified wall mounted installation (1) Hysteresis may exceed ±0.1% of span for ranges equal to or greater than 75,000 psi. (±0.3% typical not to exceed ± 0.4% of span). (2) Absolute gauges require manual settings of barometric pressure (3) Recommended for precision applications where ambient temperature varies more than ±10°F
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