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Gauge pressure range: (0.1~10) MPa
Differential pressure range: (1~1000) kPa
Mass sets: 20 + 20 + 1 kg
Accuracy: 0.005% of reading
Piston material: Tungsten carbide
Cylinder material: Tungsten carbide
Mass material: 304 stainless steels
Base material: Aluminium alloy, stainless steel
Transforming medium: Pure nitrogen, oil
Lubricating medium: Sebacate, nitrogen (≤20MPa)
Gravity: Standard 9.80665 m/s² or custom local
Pressure units: MPa (bar or PSI is optional)
Connector: Metric (NPT or BSP is optional)
Dimension: 670 (L) x 450 mm (D) x 320 mm (H)
Weight: 40kg
SCOPE OF DELIVERY
BL508 Differential pressure deadweight tester base
Piston cylinder units (x2)
304 stainless steel mass sets (x2)
Mass carriers (x2)
Trim mass set
Adapter kits (NPT, BSPP)
Reducer for gas bottol
Transit case
Datasheet
The main challenge of defining ΔP at high line pressures comes from the very high ratio of the line pressure to the differential pressure, and the fact that relative small instabilities in the magnitude of line pressure are very large in comparison to the small magnitude of the differential pressure.
The BL508 differential pressure deadweight tester uses the principle of high line differential measurement with two pistons allows setting and maintaining the line pressure with an uncertainty much lower than the overall measurement uncertainty on either piston. The master and slave pistons are cross floated at the line pressure prior to making differential measurement to minimize the contribution of line pressure errors to differential pressure. High line differential mode relies upon the very high sensitivity of piston cylinder unit to set and stabilize low differential pressure relative to high line pressures.
FEATURES
Measure the 1,000kPa differential pressure under the high static pressure 40MPa
Each piston and cylinder unit can be used separately to measure gauge pressure
Masses can be customize the local gravity.
Over-pressure protection is integrated
Built-in oil/gas separator
APPLICATION
Primary pressure standards in laboratories
Precision pressure measurement
