WEBTEC DHT401 Manuel D'utilisation D'origine page 8

Tachometer
input
Tachometer input - Connection socket for the optional infra-red phototachometer.
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Selector switch - Turn the switch to select the required function.
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OFF/RESET - Switches the tester off and resets the unit after automatic power shut off.
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'B' TEST - Checks the condition of the battery.
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TEMP - Temperature is indicated on the display.
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TACH - RPM is indicated on the display.
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FLOW 'HI' - Flow is indicated on the 'Hi' scale of the display.
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FLOW 'LO' - Flow is indicated on the 'LO' scale of the display.
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6
HT 2 Series Analogue Hydraulic Tester
Pressure gauge
Selector switch
Battery
voltage low (flow, temp, rpm)
Display
Battery
voltage ok
Battery cover