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| 2485 Hydraulic Piston Gauge |
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The model 2485 Hydraulic Piston Gauge is a high precision standard that provides unsurpassed performance in the field of hydraulic piston pressure gauge metrology.
This instrument can be used to calibrate virtually any pressure device including other industrial or portable piston gauges, transducers, transmitters, gauges, or pressure switches. Available in either of two standard media configurations, the Model 2485 can also be used in multiple media systems to facilitate calibrations of the wide variety of instrumentation is use today.
- Pressure ranges from 10 to 72,500 psi
- Accuracy to 0.0030% of reading
- Complete with built in pressure generation
- Special piston - safe protection system
- Compact design
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General |
| Pressure Range |
10 to 20,000 psig (0.5 to 1000 bar), 10 to 72,500 psig
(0.5 to 5000 bar) with high pressure intensifier |
| Accuracy |
- 10 to 1000 psig (0.5 to 50 bar); 25 ppm of reading or 13.8 Pa (whichever is greater)
- 100 to 10,000 psig (5 to 500 bar); 35 ppm
- 200 to 20,000 psig (10 to 1000 bar); 35 ppm
- 1000 to 72,500 psig (75 to 5000 bar); 100 ppm
Accuracy as used here is defined as the 2-sigma root-sum-square total uncertainty in pressure as determined from the method described in ISO “Guide to the Expression of Uncertainty in Measurement,” and represents a 95% level of confidence. These claims are subject to limitations in the state-of-the art uncertainty where available in pressure measurement at NIST and on strict procedure, training and environmental controls at the location where used. |
| Electrical Power |
115/230 VAC, 50/60 Hz, 15 W |
| Operating Temperature |
64°F to 82°F (18°C to 28°C) |
| Storage Temperature |
68°F to 122°F (20°C to 50°C) |
| Humidity |
Operating: 20 to 75% relative humidity, non-condensing
Storage: 0 to 90% relative humidity, non-condensing |
| Dimensions (h x w x d) |
20 in x 20 in x 14 in (51 cm x 51 cm x 36 cm) |
| Weight |
90 lb (40 kg); excluding masses |
| Pressure Medium |
Dioctyl sebacate (DOS) oil |
Mass Set |
| Construction |
Single-piece construction, 26 pieces plus trim set of nonmagnetic, austenitic, 300 Series stainless steel with no loose-fill materials |
| Calibration |
Trimmed to 50 ppm of nominal, calibrated to 5 ppm |
| Weight |
Set: 220 lb (100 kg)
Maximum platter: 11 lb (5 kg)
Cases: first case_35 lb (16 kg), other cases_50 lb (23 kg) |
| Case Dimension (h x w x d) |
First case: 13.5 in x 13 in x 10 in, (34 cm x 33 cm x 25 cm)
Other cases: 12.5 in x 13 in x 8 in (32 cm x 33 cm x 20 cm) |
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Piston/Cylinder Assemblies |
| Materials |
Cemented tungsten carbide |
| Thermal Coefficient |
.0000091/°C |
| Resolution |
Less than 1 ppm, or 20 mg |
| Precision |
Less than 5 ppm (2s typical) |
| Stability (per year) |
Less than 5 ppm |
Optional |
| Option |
Model 2456 deadweight gauge monitor with WinPrompt calibration software |
| Option |
ISO-17025 accredited calibration (certificate) |
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