The DH‑Budenberg CPB5800 is a high-precision, primary standard hydraulic deadweight tester designed for laboratory calibration of a wide range of pressure instruments, including transmitters, transducers, and mechanical gauges. It boasts an exceptional accuracy of 0.006% of reading, making it one of the most accurate instruments of its kind.

The instrument operates on a purely mechanical principle, deriving pressure from the fundamental equation p = F/A, and requires no electrical power. Pressure is generated and finely adjusted via an integrated, precision spindle pump. The pump features a unique design where the threaded spindle moves within the pump body, ensuring no cantilever forces or changes in the instrument's footprint during operation. Once equilibrium is reached, the pressure remains stable for several minutes, allowing for accurate and relaxed calibration of the device under test.

Constructed from high-quality, precisely machined materials, the CPB5800 offers excellent long-term stability with a recommended recalibration cycle of five years. The mass sets are manufactured from stainless steel and can be adjusted for local gravity at no additional charge.

Key Features

• Accuracy: 0.006% of reading (measurement uncertainty)
• Pressure range: Up to 20,000 psi (1,400 bar) with internal pressure generation
• Integrated precision spindle pump for pressure generation and fine adjustment
• Primary standard, self-contained system for lab use
• Recommended recalibration cycle: 5 years
• Masses manufactured from stainless steel
• Local gravity adjustment possible at no additional charge
• Calibration certificate traceable to NIST

What's in the Box

• Pressure balance CPB5800
• Priming pump
• Spindle pump for filling, pressure generation and fine adjustment
• Piston-cylinder system
• Standard mass sets in carrying case
• VG22 mineral oil (1.0 litre)
• Quick connector for test items with G ½ female threaded insert
• Piston connection with G ¾ male thread
• Operating instructions
• Factory calibration certificate
• Dust protection cover