WEBTEC 1 Série Manuel D'utilisation page 13

EU (lpm/Centigrade)
Model Number Flow Range (lpm)
DHM403-B-6
DHM803-S-7-L
US (gpm/Fahrenheit)
Model Number Flow Range (gpm)
DHM403-S-6
DHM803-S-7
Flow
The EU version displays flow in lpm, the US version displays flow in gpm.
Accuracy: ± 1% of indicated reading (over 15 - 100% of range).
Pressure and peak pressure
Measured using a built-in pressure transducer rated to 600 bar / 8700 psi. The transducer
has a typical response time of <1 ms to enable the accurate capture of peak pressures. The
engineering units for pressure can be changed using the 'pressure units' button on the front
panel. Standard units are 'BAR, PSI, MPA, KSC'.
Accuracy: Pressure 0.5% FSD, Peak 1% FSD.
Temperature
Sensed by a thermistor built into the flow transducer to maximise contact with the oil flow and
ensure fast response. The EU version displays temperature in °C, the US version displays
temperature in °F.
Accuracy: ± 1°C, 2°F.
Power
Calculated from the flow and pressure, the hydraulic power is displayed in either HP or KW.
The engineering units for power are linked to the pressure units and can be changed using the
'pressure units' button on the front panel.
Accuracy: ± 3 kW / 4 HP (≤ 100 kW / 134 HP), ± 5 kW / 6.7 HP (> 100 kW / 134 HP).
Volumetric efficiency
Calculated as a ratio of the flow at high pressure to the flow under reference conditions.
Volumetric Efficiency is expressed as a percentage, at constant rpm.
Accuracy: ± 1% point.
Specification
Pressure Range (bar)
10 - 400 0 - 420 (0 - 600 peak)
20 - 800 0 - 480 (0 - 600 peak)
Pressure Range (psi)
2.5 - 100 0 - 6000 (0 - 8700 peak)
5 - 210 0 - 7000 (0 - 8700 peak)
Inlet/Outlet Ports
1" BSPP
1-7/8" -12UN #24 SAE ORB
Inlet/Outlet Ports
1-5/16" -12UN #16 SAE ORB
1-7/8" -12UN #24 SAE ORB
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