General Description; Overvoltage/Installation Category - Velleman DVM841 Manual Del Usuario

 Always be careful when working with voltages above 60 VDC or 30 VAC
rms. Keep your fingers behind the probe barriers at all times during
measurement.
 Never perform resistance, diode or continuity measurements on live
circuits. Make sure all capacitors in the circuit are depleted.

6. General Description

This device is a battery-operated, hand-held 3 ½ digital multi-meter for
measuring DC and AC voltages, DC current and resistance. It also offers the
possibility of executing continuity tests and of testing diodes and transistors.
The back light is optional.
Refer to the illustration on page 2 of this manual:
1. Display
3 ½ digits, 7 segments, LCD: 47 x 15 mm
2. Back light
In any range, press this button to activate the backlight. Press again to
deactivate.
3. Rotary switch
This switch is used to select functions and desired ranges as well as to
turn the meter on/off.
4. Hold button
In any range, press this button to freeze the last reading. Press again
to unfreeze.
5. "VmA" jack
Insert the red (positive) test lead in this connector to measure voltage,
resistance and current (except 10 A).
6. "COM" jack
Insert the black (negative) test lead.
7. "10A" jack
Insert the red test lead in this connector in order to measure a max.
current of 10 A.

7. Overvoltage/Installation Category

DMMs are categorized depending on the risk and severity of transient
overvoltage that might occur at the point of test. Transients are short-lived
bursts of energy induced in a system, e.g. caused by lightning strike on a
power line.
The existing categories according EN 61010-1 are:
A CAT I-rated meter is suitable for measurements on protected
CAT I electronic circuits that are not directly connected to mains power,
e.g. electronics circuits, control signals...
V. 02 – 26/04/2016
DVM841
6 ©Velleman nv