Ashcroft 2089 Precision Digital Test Gauge
Overview
The Ashcroft 2089 is a precision digital test gauge engineered for calibration laboratories, gauge repair facilities and field verification of process instrumentation. Built around Ashcroft’s temperature-compensated silicone MEMS sensor technology, it delivers a total error band of ±0.05% of span, covering linearity, hysteresis, repeatability and temperature effects between 0°F and 150°F. For plant instrumentation technicians who need a portable master reference against ASME B40.100 grade process gauges, the 2089 provides laboratory-level confidence in a rugged, battery-powered field unit that fits in a padded carry pouch.
With engineering support in Muscat, Seven Star LLC supplies the Ashcroft 2089 digital test gauge to calibration laboratories, mobile calibration vans, and process industry maintenance teams across the Sultanate of Oman, Muscat, and the wider GCC region.
Measurement Principle
At the core of the Ashcroft 2089 is a silicone MEMS (micro-electromechanical systems) pressure sensor, a solid-state technology that converts applied pressure into a proportional electrical signal through the deflection of an etched silicon diaphragm. Because the sensing element has no moving mechanical linkage, the gauge avoids the friction, backlash and long-term drift that limit the accuracy of Bourdon-tube mechanical gauges used as calibration masters. The onboard microprocessor continuously compensates the raw sensor output for temperature across the full 0°F to 150°F (–18°C to 60°C) operating range, holding the terminal-point total error band to ±0.05% of span on the highest accuracy variant.
This measurement approach gives the instrument the stability and repeatability required for verifying vacuum, compound, absolute and gauge-pressure instruments across ranges from vacuum through 7,000 psi. Because the digital display resolves to five full digits and the unit stores its calibration coefficients electronically, technicians can move between test points quickly without the parallax and interpolation errors inherent to analog dial gauges — a practical benefit when auditing dozens of field transmitters in a single shift.
Engineering Design of the Ashcroft 2089
Ashcroft engineered the 2089 around what it calls the industry’s smallest test-gauge case at just 3 inches, housed in a 300 Series stainless steel enclosure rated NEMA 4 / IP65 for weatherproof field use. The process connection is a 1/4 NPT male fitting in 316 stainless steel, available on the lower or top-mounted, left- or right-side configuration to suit different test-bench and hand-pump setups. This compact, corrosion-resistant build lets the gauge travel in a technician’s tool case or mobile calibration van without the bulk of a full bench-mount deadweight tester.
Power comes from three AAA alkaline batteries delivering over 1,000 hours of continuous operation, and the backlit LCD offers adjustable contrast for readability in bright sunlight or dim mechanical rooms. The Ashcroft 2089 supports twelve selectable engineering units and seven display languages, and its included stainless steel protective cover shields the case during transport between test sites. Field calibration capability means the unit can be re-zeroed and span-checked without returning it to a metrology lab, keeping it in active rotation across busy maintenance schedules.
Key Features of the Ashcroft 2089
This test gauge combines MEMS sensing accuracy with a rugged, portable form factor. Core capabilities include:
- Total error band accuracy of ±0.05% of span on the 2089 grade, terminal point method, including linearity, hysteresis, repeatability and temperature effects.
- Industry-compact 3-inch stainless steel case designed for portability in calibration kits and mobile test vans.
- Full five-digit LCD display with backlighting and adjustable contrast for outdoor and low-light readability.
- Twelve selectable engineering units and seven display languages for multi-site, multi-national maintenance teams.
- Pressure coverage from vacuum through 7,000 psi across gauge, compound, absolute and vacuum configurations.
- 1/4 NPT male process connection in 316 stainless steel, available in multiple mounting orientations.
- NEMA 4 / IP65 weatherproof enclosure rating suited to demanding plant and outdoor field environments.
- Field-calibratable operation powered by AAA batteries rated for over 1,000 hours of continuous use.
Industrial Applications
It is the reference instrument of choice wherever a facility must prove that its installed process gauges remain within tolerance. Calibration laboratories and gauge repair shops use the Ashcroft 2089 as a portable master when bench-testing incoming and outgoing instruments, while mobile calibration teams servicing refineries, power stations and desalination plants across Oman carry this test gauge to perform on-site verification without removing process gauges for offsite testing. In oil and gas production facilities, district cooling plants and water treatment works throughout the GCC, maintenance engineers rely on this instrument to confirm that safety-critical pressure indicators and switches are reading accurately before a turnaround or audit.
Backed by genuine manufacturer documentation, Seven Star LLC distributes the Ashcroft 2089 to instrumentation workshops, test and measurement laboratories, and validation teams operating within the Sohar and Salalah economic zones, as well as to industrial clients throughout Muscat and the broader Sultanate of Oman. Because this instrument is genuinely sourced and factory-calibrated, quality and metrology departments can rely on its traceable accuracy when supporting ISO 9001 audits, third-party inspections, and internal instrument validation programs across the region.
Technical Specifications
Key technical parameters for the Ashcroft 2089 digital test gauge:
| Parameter | Specification |
|---|---|
| Model | Ashcroft 2089 |
| Accuracy (Total Error Band) | ±0.05% of span, terminal point method |
| Grade Reference | ASME B40.100 test-grade equivalent accuracy class |
| Case Size | 3 inch (76 mm), 300 Series stainless steel |
| Process Connection | 1/4 NPT male, 316 stainless steel, lower or top / left or right |
| Pressure Ranges | Vacuum through 7,000 psi – gauge, compound, absolute and vacuum |
| Sensor Technology | Temperature-compensated silicone MEMS |
| Display | Full 5-digit backlit LCD, adjustable contrast |
| Engineering Units | 12 selectable units, 7 display languages |
| Operating Temperature | 0 to 150°F (–18 to 60°C) |
| Enclosure Rating | NEMA 4, IP65 weatherproof |
| Power Supply | 3 x AAA alkaline batteries, 1,000+ hours life |
| Approvals | FM Intrinsically Safe |
| Included Accessories | Stainless steel protective cover, padded carry pouch |
Request a Quote for Ashcroft 2089 Precision Digital Test Gauge
To submit a formal Request for Quote (RFQ), confirm current availability and lead time, or download the complete technical datasheet for the Ashcroft 2089 digital test gauge, contact the instrumentation division at Seven Star LLC today.
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- Datasheet Ashcroft 2089 Precision Digital Test Gauge Datasheet Download
Ashcroft gauges listed
Two instruments are on this page. The 1279 Duragauge is a process pressure gauge with a solid-front safety case. The 2089 is a precision digital test gauge, the kind used as a reference when other gauges and transmitters are checked. Beyond these, the manufacturer's program covers pressure switches, pressure sensors, diaphragm seals, thermometers, thermowells and hand pumps.Ordering Ashcroft gauges: what we need
An Ashcroft gauge code is built from dial size, case type, wetted material, connection and range. Send the code from the dial or the nameplate if it is readable. Otherwise state the dial size, the pressure range and units, connection size and position (lower or back), the tube and socket material, and whether liquid filling or a diaphragm seal is needed. Mention the process medium and temperature. For the 2089, give the range, pressure type and units.Browse Ashcroft products by category: Pressure Instrumentation.
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