M&G deadweight testers (primary standards)

M&G HL series (hydraulic)

Range: 100 to 22,500 kPa (10 to 3,000 psi)
This extremely compact, self-contained portable tester is designed for pressure ranges from 10-200 psi (1-15 bar) up to 50-3,000 psi (5-225 bar). Accurate to ±0.05% of reading, the unit features an easy-to-use screw pump with ratcheting handle and re-entrant type piston/cylinder assembly. This helps maintain accuracy as the test pressure increases. Weights and piston assemblies are interchangeable. The unit's AAA tester oil may be easily inspected through the transparent reservoir. Compact design in only 9 x 9 x 10 in (23 x 23 x 24.5 cm). Tripod option available for field applications.

Deadweight testers are superior to all digital systems. Use the deadweight testers as your company's primary standard or to calibrate very critical pressure gauges as in custody transfer applications.

In 1966, Mansfield & Green introduced the deadweight tester based on the “floating ball” principle. This deadweight tester is an extremely easy-to-use, reliable and accurate primary standard and is now earning its reputation as the “standard of standards”.

Typical deadweight tester applications are:

• laboratory or field use
• hazardous locations
• critical process control loops extending the time between calibrations due to better accuracy and uncertainty
• calibrating instruments on custody transfer stations thereby reducing the uncertainty of the measurement
• calibrating portable digital calibrators to achieve the highest possible accuracy and reducing maintenance costs