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CASHCROFT

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A4A Precision Pressure Gauge

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FEATURES

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•+0.7% F.S. accuracy - ASME B40.1,

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Grade 4A

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• Ranges from 15-100,000 psi

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• Solid front protective case

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• High and low pressure limit stops

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• Mirror band dial to eliminate parallax

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reading error

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• Optional temperature compensation

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maintains 0.1% accuracy from

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-25 to +125°F

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The Ashcroft precision pressure gauge

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yields consistent, reliable accuracy

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through the use of state-of-the-art preci-

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sion machining and the world's most

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refined bourdon tube technology. This

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eliminates the need for a power source

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and precludes the associated problems

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such as susceptibility to electronic line

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noise, power outage or potential fire haz-

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ard. In addition, this mechanical instru-

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ment is simple to operate, easy to trouble-

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shoot, and can be readily flushed or

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purged to remove foreign matter or

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trapped gas. Accurate and reliable, the

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Ashcroft A4A sets a new standard for

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precision test gauges.

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SPECIFICATIONS

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Accuracy: ±0.1% of Span

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Includes Calibration Certificate Traceable to NIST.

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Meets requirements of MIL-STD-45662 and

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ASME B40.1 Grade 4A

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Repeatability: ±0.02% of Span

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Hysteresis: <0.1% of Span <1)

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Sensitivity: 0.01% of Span

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Pressure Ranges: 0/15 psi through 0/100,000 psi

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"Unitized"Bourdon Tube Materials

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Pressure Ranges:

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Beryllium Copper 0/15 psi thru 0/40 psi

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403 SS 0/50 psi thru 0/100,000 psi

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Standard Pressure Inlet Type & Location:

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VA NPT Female - Back Connect

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0/15 psi thru 0/10,000 psi

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%6-18UNF-2B Female-

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Back Connect Over 10,000 through 100,000 psi

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White Dial, Knife-Edge Pointer, Mirror Ring:

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Available Dial Sizes 6" 8.5" 12" 16"

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Scale Length 18" 25" 31.5" 43.25"

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Pointer Travel 350°*

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'Ranges over 30,000 psi have less travel

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OPTIONAL FEATURES

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"Unitized"Bourdon Tube Materials/Pressure Ranges:

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Beryllium Copper 0/50 psi through 0/10,000 psi

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403 0/15 psi through 0/40 psi

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Optional Pressure Inlet Type and Location:

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(Specify type and location)

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VA NPT Female Bottom

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% NPT Male or Female-Back or Bottom

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VA NPT Male or Female-Back or Bottom

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%6-18 UNF-2B Female for VA'W Tubing

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MS33649-4 Female Only-Back or Bottom

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MS33656-4 Male Only-Back or Bottom

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MS-16142 Female Only-Back or Bottom

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MÌI-G-18997D Male Only-Back or Bottom

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Dual Scale: For example, psi & inches of mercury or

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inches of water & kPa

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Optional Pressure Types: Absolute, Vacuum,

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Compound'2*

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Bimetallic Temperature Compensator: Eliminates

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temperature errors from -25°F to +125°F<3)

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Other Engineering Units/Special Scales: For

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example, tons on ram

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Slotted Link: Protects gauge from damage due to

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sudden pressure release

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Peak Load Indicator: Tracks the maximum indicated

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pressure measurement

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Wall Mounting Brackets: Provides simplified wall

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mounted installation

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:i) Hysteresis may exceed ±0.1 % of span for ranges equal to

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or greater than 75,000 psi. (±0.3% typical not to exceed

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± 0.4% of span).

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7) Absolute gauges require manual settings of barometric

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pressure

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3) Recommended for precision applications where ambient

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temperature varies more than ±10°F

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All specifications are subject to change without notice.

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All sales subject to standard terms and conditions.

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©Ashcroft Inc. 2008

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Ashcroft Inc., 250 East Main Street, Stratford, CT 06614 USA

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Tel: 203-378-8281 • Fax: 203-385-0408

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email: ¡nfo@ashcroft.com • www.ashcroft .com

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