WIKA Automatic dead-weight tester CPB8000

Pressure Standards

Deadweight testers are technical devices that reproduce the physical unit of pressure, the Pascal. The reproduction and transfer of the pressure unit is based on the fundamental formula relating mass, length and time, and is defined (in short) as p = F/A.

Automatic reproduction and transfer of the pressure unit is based on the know-how of Desgranges & Huot and guarantees the best metrological performance on the market.

• High-precision measuring piston-cylinder systems (long rotation time, low drop rate and long-term stability)

• Protected and smooth handling of the weight set

• Large volume

The CPB8000 was developed to meet the highest metrological requirements, while also fulfilling the demands of production processes. A high mean time between failures and an outstanding pressure generation system also make the CPB8000 suitable for calibration, verification and testing of measuring instruments in large volumes.

Automation and Metrology

A pressure generation volume driven by a servomotor combined with a built-in optical position sensor of the measuring piston-cylinder system allows pressure adjustment with the required accuracy. The weight set, enclosed in a cabinet, ensures high repeatability and stability. The final pressure value is corrected taking into account external influencing factors.

Different versions available

The CPB8000 model is available in 4 versions:

• Pneumatic and hydraulic pressure generation

• With or without a mass balancing system (up to 10 milligrams)

• Various designs of measuring piston-cylinder systems are possible for the CPB8000.

Features

• Expanded uncertainty up to 20 ppm of the measured value

• Calibration certificate from a laboratory accredited by COFRAC, optionally a calibration certificate from LNE/PTB

• Available ranges: up to 1000 bar – pneumatic, up to 5000 bar – hydraulic

• Automatic loading systems for weights up to 100 kg with resolution up to 0.1 grams

• Automatic pressure generation

Application

• Combination of automation and high-level primary standard

• Excellent solution for testing, adjustment, verification and calibration of high-precision pressure transducers

• Automatic verification and calibration of pressure measuring instruments

• Large volume of instruments to be calibrated