CPB3800 Dead-weight tester
04 September 2024
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Model CPB3800
Dead-weight tester
compact version, to 1,200 bar [16,000 lb/in²]
Applications of the pressure standard
- Primary standard for calibrating the pressure scale in a hydraulic range up to 1,200 bar [16,000 lb/in²]
- Reference instrument for factory and calibration laboratories for the testing, adjustment and calibration of pressure measuring instruments
- Complete, stand-alone system, also suitable for on-site use
Special Features of the pressure standard
- Total measurement uncertainty up to 0.025 % of reading
- Upgradeable using CPS5800/CPM5800 to provide increased accuracy to 0.006 %
- Direct replacement of original DH-Budenberg 580 series
- Factory calibration included as standard, traceable to national standards, with UKAS calibration possible as an option
- Masses manufactured from stainless steel, can be adjusted to local gravity
Description of the pressure standard
Proven primary standard
Pressure standards (dead-weight testers) are the most accurate instruments available on the market for the calibration of electronic or mechanical pressure measuring instruments. The direct measurement of the pressure (p = F/A), as well as the use of high-quality materials enable a very small measurement uncertainty, in conjunction with an excellent long-term stability. The pressure standard (dead-weight tester) has therefore been used for years in factory and calibration laboratories in industry, national institutes and research laboratories.
Stand-alone operation
Due to its integrated pressure generation and the purely mechanical measuring principle, the pressure standard model CPB3800 is ideal for on-site use for maintenance and service.
Basic principle
Pressure is defined as the quotient of force and area. The core component of the pressure standard CPB3800 is therefore a very precisely manufactured piston-cylinder system, onto which a mass load is applied in order to generate the individual test points.
The mass load is proportional to the target pressure and this is achieved through optimally graduated masses. As standard, these masses are manufactured to the standard gravity (9.80665 m/s²), though they can be adjusted to a specific location andcalibrated according to UKAS accreditation.
