Description
Features:
• 0 MPa to 70 MPa (10 000 psi) range
• ± 0.1% of reading measurement uncertainty from 1% to 100 % of range
• Not dependent on local gravity or ambient temperature
• Sets and reads any pressure value directly in any unit of measure, without moving weights
• Built-in filling and priming system
• “Ready” indication based on pressure stability
• Electronic output allows automated data collection using calibration software
• Compact and transportable—rechargeable battery pack for 8 hours of field operation
• Selected by the US Air Force to replace conventional, mass/ piston-cylinder based deadweight testers
E-DWT-10000-AF is an electronic calibrator designed to replace mechanical piston-cylinder based deadweight testers. E-DWT is a lighter weight, easier-to-use deadweight tester alternative that is at home in the lab or instrument shop, as well as in the field performing in-situ calibrations and tests.
With E-DWT you get a high performance hydraulic pressure calibration system that combines an electronic reference pressure monitor (RPM4) and manually operated pressure generation and control hardware in a single, compact and rugged package.
E-DWT offers the ease of use and precision of continuous, real time electronic pressure measurement with the simple and direct pressure control of high quality, manual hardware. The electronic reference pressure monitor is a special version of DHI’s RPM4, designated RPM4-E-DWT A70M/A7M-AF. It covers the range from 0 to 10 000 psi gauge pressure using two high precision quartz reference pressure transducers, proven over 20 years in thousands of DHI calibration products.
E-DWT includes on-board calibration routines to assist in setting up, running and taking data, particularly when calibrating analog gauges. RPM4-E-DWT A70M/A7M-AF includes an AutoRange feature to automatically select the most appropriate Q-RPT and to optimize the E-DWT setup to cover the desired range of operation. A half-turn valve isolates and protects the Lo Q-RPT from high pressure when the Hi Q-RPT is in use. Visual and audible indicators assist the operator in setting the shut off valve correctly. RPM4-E-DWT A70M/A7M-AF is controlled locally by the operator using its front panel display, keypad and an optional foot pedal or remotely by a computer using COMPASS calibration
software or ASCII character command strings over its RS-232 interface. The E-DWT-10000-AF package was specifically configured for the US Air Force. It includes the E-DWT instrument, two eight-hour battery packs, adaptors and a rugged, molded plastic transport case.
