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DHM 3 Series Digital Hydraulic Multimeter
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Catalog excerpts

DHM 3 Series Digital Hydraulic Multimeter - 1

Digital Hydraulic Multimeter Measure Flow, Pressure, Peak Pressure and Temperature Power and Volumetric Efficiency Up to l 800 lpm, 210 US gpm l 480 bar, 7000 psi The DHM 3 Series Digital Hydraulic Multimeter is an all-in-one unit designed to test the performance of hydraulic pumps, motors, valves and hydrostatic transmissions. The easy-to-use design allows the operator to just switch on and test, without complex setup. The DHM measures flow, pressure and temperature. In addition, the DHM holds the peak pressure value as well as calculating hydraulic power and volumetric efficiency using the unique P-Q test button. The DHM is the ideal tool for pinpointing hydraulic system faults, reducing downtime, and helping in preventative maintenance. The design builds on the very successful DHT range of portable testers with the addition of a large digital display and a built-in pressure transducer. The turbine flow meter with builtin loading valve is bi-directional and specifically designed to enable the operator to simulate the maximum working pressure safely during normal machine operation. The loading valve has safety discs built-in to protect the operator and the multimeter in the event of excessive pressure, allowing oil to bypass the loading valve INTERNALLY with no spillage of oil from the hydraulic circuit, eliminating any danger to the operator or environmental hazards. Milwaukee, WI 53235, USA Tel: +1 (414) 769-6400 sales-us@webtec.com St. Ives, Cambs. PE27 3LZ, UK Tel: +44 (0) 1480 397 400 sales-uk@webtec.com Features l FLOW 10-800 lpm, 2.5-210 US gpm l PRESSURE 480 bar, 7000 psi l ACCURATE measurement of flow, pressure, peak pressure and temperature. l BUILT-IN loading valve. l BI-DIRECTIONAL for unrestricted connection and simplified testing. l INTERNAL oil by-pass protects the tester and system against overpressure. l AUTOMATIC calculation of hydraulic power and volumetric efficiency l EASY to operate controls. l PORTABLE AND LIGHTWEIGHT with angled case for easier viewing and cleaning. Hydraulic measurement and control

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DHM 3 Series Digital Hydraulic Multimeter - 2

Specifications Model Flow range number Pressure range Fluid temp. range * DHM803 has limited pressure control below 86 lpm (23 US gpm). The maximum controllable pressure in this region is calculated by: max pressure (in bar) = 5 x flow (lpm) + 30 Functional specification Ambient temperature: 5 to 40°C (41-104°F) Fluid type: Hydraulic oil Accuracy: Flow: ± 1% of indicated reading (15 to 100% of range) Pressure: ± 0.5% full scale Temperature: ± 1°C (± 2°F) Power: Below 100KW (134HP) ± 3KW (± 4HP) (134HP) ± 5KW (± 6.7HP) Above 100KW Volumetric efficiency: ± 1% Construction materials Case: Flow...

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