General Points; Instrument Description - METREL 1150 LCD Manual De Instrucciones

MD 1150-LCD

General Points

Voltages have priority. If no voltage is detected at the probe tips (< 3.0 V), the devices is
in throughput testing mode.

6 Instrument Description

6.1 Function:
The device is activated and shut down at the "ON/OFF" switch. (See drawing) The "Auto
Power Off" function of the device activates after about short minutes. By pressing the
DATA-HOLD button switch longer than 2s the LED torch will be switched on.
6.2 Self testing:
Hold the probe tips together when carrying out this test. The buzzer on the test device
should sound clearly and the display should show nearly "000". If the LCD screen is
blank or dimly illuminated, the batteries must be replaced. If the unit does not work with
new batteries it has to be protected against wrong use.
6.3 Testing DC voltage:
When the probe tips are connected to a DC voltage within the nominal voltage range,
the reading is displayed in volts and the "DCV" symbol lights up. If a negative voltage is
detected at probe tip "L1", a "-" (minus) symbol is displayed before the reading.
An acoustic signal an a blinking background light on the displayed are used to indicate
that there is a life-threatening voltage level at or above 35 V present.
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