Download DMM 220 - Multimetrix

Chapter II
1.
GENERAL INSTRUCTIONS
1.1
Precautions and safety measures
1.1.1 Before using
You have just acquired a DMM220 multimeter. Thank you for your
confidence. It measures AC/DC Voltage, AC/DC Current, Resistance,
Frequency (electrical & electronic), test diodes, and Continuity. It features a
waterproof, rugged design for heavy duty use. Proper use and care of this
multimeter will provide many years of reliable service. This multimeter
complies with the IEC 61010 standard concerning electronic measurement
instruments. For your own safety and to prevent damage to the instrument,
follow the instructions in this manual.
Be careful to adhere to storage conditions.
This handheld autonomous instrument was designed for:
∗ Indoor use
∗ Use in pollution 2 degree environments
∗ In altitudes lower than 2,000 meters
∗ In temperatures ranging from 5°C to 40°C
∗ It can be used up to 1000V on category III circuits, or 600V on category
IV circuits.
Definition of installation categories (cf. IEC 664-1)
CAT I: Circuits protected by devices designed to minimize transient
overvoltage at a low level.
E.g. protected electronic circuits.
CAT II: Domestic or analogue appliances’ power supply circuits that can
include average value transient overvoltage.
E.g. power supply to domestic appliances and portable tools.
CAT III: Power appliances’ supply circuits that can include high transient
overvoltage.
E.g: machinery or industrial apparatus power supply.
CAT IV: Circuits that can include very high transient overvoltage.
E.g. energy inputs
For safety reasons, you should only use leads and measurement
accessories suitable for use with the voltage and overvoltage category of the
circuit to be measured that comply with the IEC 61010 standard.
The probes used for network voltage measurement must have an assigned
measurement category IV according to IEC 61010-031 and a rated voltage
of 600 V.
Do not use the instrument or its leads if they appear damaged.
1.1.2 When using the instrument
•
Never exceed the protection limiting values indicated in the
specifications for each type of measurement.
•
When the multimeter is connected to the circuits to be measured,
do not touch any unused terminals.
•
Before changing function, disconnect the measurement leads
from the circuit measured.
•
Never measure resistances, or test diodes etc. on a live circuit.
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DMM220