BalunTech BL508-40MPA-2 Differential Pressure Deadweight tester (1 ~ 40 MPa; 0.1 ~ 1 MPa, 0.02%)

SPECIFICATION

Gauge pressure range: (1~40) MPa

Differential pressure range: (0.1~1) MPa

Mass sets: 40 + 40 + 1 kg

Accuracy: 0.02% 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

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