BL508 Differential Pressure Deadweight tester (1MPa ΔP, @60MPa)

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 60MPa

• 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

SPECIFICATION

• Line pressure range: (0.1~10)MPa gas,... (1~60)MPa oil

• Differential pressure range: 0 to 1000kPa

• Accuracy: 0.005%, 0.02, 0.01% of reading

• Piston material: Tungsten carbide （Ceramic for gas media）

• Cylinder material: Tungsten carbide

• Mass material: 304 stainless steels

• Base material: Aluminium alloy, stainless steel

• Transforming medium: Sebacate, nitrogen (≤20MPa)

• 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

PRESSURE SELECTABLE SHEET

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 (x1)

• Adapter kits (NPT, BSPP)

• Transit case

OPTIONAL ACCESSORIES AND SERVICES

• ISO17025 accredited calibration certificate (P/N: CAL-508)

• Pressure Reducer for gas bottel

• Flexible connection hose for gas bottol

• Nitrogen gas bottol (buy local)

ORDERING MODEL NUMBER

• BL508-10MPA-X (X is accuracy, 005: 0.005, 01: 0.01, 02: 0.02)

• BL508-60MPA-X

    (Need to inform the local gravity value in advance)