The Defender 520 measures volumetric gas flow with an accuracy of +/- 1% of reading and measures gas flow temperature and pressure. Both instruments use proven DryCal® technology to measure volumetric gas flow.
Measure volumetric flow, standarised flow, which correct for temperature and pressure, or calibrate devices that read in mass flow.
Defenders are true primary flow meters designed to provide light weight ultra-compact size, incorporating the industry leading DryCal technology.
Building on the patented DryCal near-frictionless piston technology, the Defender 500 series incorporates features to make it immune to flow source pulsation without the need for in-line dampers.
The Defender calibrator is easy to use. Turn it on. Connect it to a sampling pump. And start taking readings. It’s as simple as that. Calibrations within a minute with no messy soap bubble solutions to wait on or clean up after.