DMT2010 - Multimeter Monacor - Free user manual and instructions

USER MANUAL DMT2010 Monacor

6,5ms x 100% = 65% 10ms

7 Replacing the Battery or the Fuses . . . . . . . . . . . . . . . . . . . . . . 23 8 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 1 Operating Elements and Connections 1 LC display 2 Button “RANGE” for manual range selection 3 Button “MODE” to switch the measuring mode (e. g. DC or AC voltage measurement, frequency measurement or duty cycle) 4 Button “HOLD” to hold a measured value (press button briefly) and to activate the display illumination (keep button pressed for a while) 5 Button “REL” for measuring the relative value 6 Selector switch for the measuring functions GB7 Jack for the red test lead for measuring currents exceeding 400 mA to 10 A max. 8 Jack for the red test lead for measuring voltages, currents up to 400 mA, resistances, diodes, capacitors, frequencies and for measur- ing the duty cycle; when measuring temperatures, connect the positive pole of a type K temperature sensor to this jack 9 Jack for the black test lead or, when measuring temperatures, for the negative pole of a type K temperature sensor 2 Safety Notes The meter corresponds to all required directives of the EU and is there- fore marked with . Please observe the following items in any case:

The unit is suitable for indoor use only. Protect it against dripping water and splash water, high air humidity and heat (admissible ambient tem- perature range 0 – 50 °C).

For cleaning only use a dry, soft cloth; never use water or chemicals.

No guarantee claims for the unit and no liability for any resulting per- sonal damage or material damage will be accepted if the relevant safety regulations for handling voltages equal to or higher than 42 V are not observed, if the meter is used for other purposes than originally intended, if it is not correctly connected or operated, if it is overloaded or not repaired in an expert way. If the meter is to be put out of operation definitively, take it to a local recycling plant for a disposal which is not harmful to the environment.

WARNING: With this meter, dangerous voltages can be

measured. Particular attention should be paid when measur- ing voltages equal to or higher than 42 V!

1. Wear protective gloves to protect yourself against electric shock.

2. When applying the test tips, make sure that your fingers will be pro-

tected behind the collars of the tips.

3. Never perform any measurements when the meter or the test leads

are damaged. Always replace damaged test leads by original test leads.

GB3 Applications This digital multimeter DMT-2010 with automatic range selection is suited for measuring voltages up to 250 V¿ /~, currents up to 10 A ¿ /~, resist- ances up to 40 MΩ, capacitances up to 100 µF and frequencies up to 10 MHz. Furthermore, it will measure the duty cycle of electric signals and the forward voltage of diodes. A buzzer is provided for testing the conti- nuity. 4 Operation

1) Caution labels in eight languages are supplied with

the meter. Attach the corresponding label in your lan- guage (see figure on the right) to the field provided on the housing cover on the rear side of the meter!

2) To switch on the meter, set the selector switch (6) from

3) To provide a more comfortable reading position, unfold the tilt stand on

the rear side of the meter.

4) After operation, set the selector switch to “OFF”. The meter will be

switched off automatically if it is not used for approx. 30 minutes. To switch it on again, press a button or turn the selector switch. If the meter is not used for a longer period, it is recommended to re- move the battery to prevent any damage due to battery leakage.

4.1 Connecting the test leads

The test leads supplied with the meter will allow to perform all measure- ments except for temperature measurements (

1. Connect the black test lead to the jack “COM” (9).

2. For measuring voltages, currents up to 400 mA, resistances, diodes,

capacitors and frequencies and for measuring the duty cycle, connect the red test lead to the jack “V Ω Temp Hz% mA µA” (8). For measuring currents exceeding 400 mA, connect the red test lead to the jack “10A” (7). For measuring, remove the protective caps from the test tips and replace them after use.

GB5 Measuring Caution: Before switching over to another measuring function, always remove the test tips from the object to be measured to prevent damage to the meter!

5.1 Measuring voltages

Caution: When measuring voltages, do not connect the red test lead to the jack “10A” (7), otherwise the meter and the object to be measured may be damaged!

1) Set the selector switch (6) to the position “V ”.

2) Once the switch has been set to this position, the DC voltage meas-

urement will be activated (“DC” will be displayed). For AC voltage measurements, press the button “MODE” (3) [“AC” will be displayed]. To return to DC voltage measurement, press the button “MODE” again.

3) Apply the test tips to the object to be measured and read the value on

the display. If the red test tip is applied to the negative pole and the black tip to the positive pole when measuring DC voltages, there will be a minus sign in front of the value displayed.

5.2 Measuring currents

The current to be measured must not exceed 10 A!

Currents between 400 mA and 10 A must not be measured for more than 30 seconds. There must be an interval of 15 minutes between

WARNING: Take into account unexpected voltages on ob-

jects to be measured. Capacitors, for example, may be dan- gerously charged even if the voltage source has been switched off.

Never use this meter for measuring circuits with corona discharges (high voltage). Risk of electrocution!

The maximum voltage to be measured must not exceed 250 V¿ /~, otherwise you will risk your life!

WARNING: Measurements in circuits carrying more than

42 V must only be made by persons able to recognize a hazard of contact and to take the required safety precautions. In case of measurements with a hazard of contact, avoid working on your own. Ask a second person to assist.

GBthe individual measurements, otherwise the meter and the test leads may be damaged.

1) For measurements up to 400 mA, connect the red test lead to the jack

“V Ω Temp Hz% mA µA” (8); for measurements exceeding 400 mA to 10 A, connect it to the jack “10A” (7). With unknown currents, start with the 10 A range to be on the safe side.

2) According to the intensity of current, set the selector switch (6) to the

following position: for currents up to 4000 µA position “µA ” for currents exceeding 4000 µA to 400 mA position “mA ” for currents exceeding 400 mA to 10 A position “10A ”

3) Once the switch has been set to one of the three current ranges, the

mode “DC current measurement” will be activated (“DC” will be dis- played). For AC current measurements, press the button “MODE” (3) [“AC” will be displayed]. To return to DC current measurement, press the button “MODE” again.

4) Insert the meter via the test leads into the circuit to be measured and

read the value on the display. If the red test tip is applied to the nega- tive pole and the black tip to the positive pole when measuring DC cur- rents, there will be a minus sign in front of the value displayed.

5.3 Measuring resistances

Never measure a resistor when voltage is applied; always measure it separately, otherwise the measurement will be inaccurate. For this pur- pose, it may be necessary to solder it out of the circuit.

1) Set the selector switch (6) to the position “ Ω

CAP ”. Once the switch has been set to this position, the mode “resistance measure- ment” will be activated.

2) Apply the test tips to the resistor and read the value on the display. As

long as there is no resistor between the test tips, “OL” will be displayed to indicate an infinitely high value.

Never test a diode when voltage is applied; always test it separately, otherwise the measurement will be inaccurate. For this purpose, it may be necessary to solder the diode out of the circuit.

1) Set the selector switch (6) to the position “ Ω

3) Apply the black test tip to the cathode of the diode and the red test tip

to the anode. With a measurement current of approx. 0.3 mA, a for- ward voltage up to 0.999 V will be displayed. If a value around 0 V is displayed, the diode has a short circuit. If “OL” is displayed, the diode is interrupted, reverse-biased (reverse the polarity of the diode) or has a higher forward voltage (e. g. LEDs).

5.5 Testing the continuity

Never test the continuity when voltage is applied, otherwise the meas- urement will be inaccurate. The continuity test will check the circuit for interruption.

1) Set the selector switch (6) to the position “Ω

3) Apply the test tips to the measuring points. If the resistance value be-

tween the points is smaller than approx. 30 Ω, the internal buzzer will sound. The resistance value will be displayed up to 400 Ω. With higher values, the overload indication “OL” will appear.

5.6 Measuring capacitances

1) Set the selector switch (6) to the position “Ω CAP”.

2) To switch to capacitance measurement, press the button “MODE” (3)

three times (“nF” will be displayed).

3) Apply the test tips to the capacitor. With electrolytic capacitors, ob-

serve the polarity: Apply the red test tip to the positive pole, apply the black test tip to the negative pole. Read the value on the display. The measuring process may take a few seconds so that the accurate value will not be indicated immediately.

WARNING: Never measure a capacitor when it is charged

or when operating voltage is applied; otherwise you will risk an electric shock. Furthermore, the measurement will be in- accurate. Switch off the power supply and discharge the capacitor before solder- ing it out of the circuit.

GB5.7 Measuring frequencies/Measuring the duty cycle

1) Set the selector switch (6) to the position “Hz%”.

2) Once the switch has been set to the position “Hz%”, the mode “frequen -

cy measurement” will be activated (“Hz” will be displayed). Although “AUTO” is not displayed, the range will be selected automatically. To switch to duty cycle measurement, press the button “MODE” (3) [“%” will be displayed]. The duty cycle (displayed in “%”) is the ratio be- tween the period for which the signal is positive and the pulse duration, e. g.: To return to frequency measurement, press the button “MODE”.

3) Apply the test tips to the measuring points and read the value on the

A type K temperature sensor (not supplied with the meter) will allow to measure the surface temperature of objects. Connect the sensor via ba- nana plugs to the jacks of the meter. The temperature measurement is not suitable for medical purposes!

1) Set the selector switch (6) to the position “Temp”.

2) The meter will indicate either Fahrenheit (“°F”) or Celsius (“°C”). To

change the temperature unit, open the housing cover on the rear side of the meter (

the switch in the battery compartment to the corresponding position, reinsert the battery and screw down the cover.

3) Connect the positive pole of the sensor to the jack “V Ω Temp

Hz% mA µA” (8) and the negative pole to the jack “COM” (9).

4) Apply the sensor to the object to be measured.

5) Once the value has stabilized (after approx. 30 seconds), read the

temperature on the display.

WARNING: To avoid electric shock, do not apply the tem-

perature sensor to any objects carrying voltage. It will be possible to measure the duty cycle for the frequency range 5 Hz – 150 kHz. The period for which the signal is positive must be between 100 µs and 100 ms.

GB6 Additional Functions

6.1 Manual range selection

The optimum range for a measuring function will always be selected automatically when “AUTO” is displayed (“AUTO” will not be displayed when measuring frequencies

“AUTO” will disappear.

2) Each time the button “RANGE” is pressed, the next higher range will

be selected. This will reduce the resolution of the measured value, but it will prevent permanent switching if the measured value fluctuates between two ranges. When the highest possible range has been reached and the button is pressed again, the smallest range will be selected. If the range is too small, “OL” (overload) will be displayed.

3) To return to automatic range selection, keep the button “RANGE”

pressed for approx. 2 seconds until “AUTO” is displayed or select an- other measuring function with the selector switch (6). Note: When measuring frequencies and capacitances, it will not be pos- sible to deactivate the automatic range selection.

6.2 Measuring the relative value

This function will indicate deviations relative to a defined measured value. It will be available for measuring currents, voltages, resistances, capaci- tances and temperatures.

1) Perform a measurement. When the desired reference value is indi-

cated, press the button “REL” (5). “REL” will be displayed. If “OL” is displayed, it will not be possible to activate this function.

2) If the measured value changes, the deviation relative to the reference

value will be displayed. When measuring the relative value, the auto- matic range selection will be deactivated (except for measuring ca- pacitances).

3) To deactivate the relative value measurement, press the button “REL”

once again. If required, keep the button “RANGE” pressed for approx. 2 seconds to activate the automatic range selection. The relative value measurement will also be deactivated when another measuring func- tion is selected.

GB6.3 Data hold function It will be possible to hold a measured value on the display, e. g. to be able to read the value more easily when the test tips have been removed from the object to be measured. For this purpose, press the button “HOLD ” (4) briefly. “HOLD” will appear. To return to the present value, press the button “HOLD ” briefly to deactivate the function (“HOLD” will disappear).

6.4 Activating the display illumination

To activate / deactivate the display illumination, keep the button “HOLD ” (4) pressed for approx. 2 seconds. Note: With this button, the function “Data hold” (chapter 6.3) will be acti- vated / deactivated at the same time. Press the button briefly to deactivate or reactivate it. 7 Replacing the Battery or the Fuses A If nothing is displayed or if the symbol (= low battery) is displayed, insert a new 9 V battery. B If it is not possible to measure currents, check the internal fuses and have them replaced by skilled personnel. You will find the battery compartment and the fuse holders under the housing cover on the rear side of the meter.

1) Fold up the tilt stand, release the two screws of the housing cover,

then remove the cover.

2) To replace the battery, remove the old battery, connect the battery con-

tacts to the new battery and insert it into the compartment. Replace a defective fuse by one of the same type only: range up to 400 mA F 0.5 AL/250 V range up to 10 A F 10 AL/250 V

3) Screw down the cover again before setting the meter into operation.

Used batteries must not be placed in the household waste, always take them to a special waste disposal, e. g. collection container at your retailer.

WARNING: Before opening the housing, remove the test tips

from the measuring points and the test leads from the jacks on the meter, otherwise you will risk an electric shock. Never operate the meter when it is open.

GB24 8 Specifications Data for measuring voltages, currents, resistances, capacitances and frequencies

INTERNATIONAL GmbH & Co. KG. No part of this instruction manual may be reproduced in any form or by any means for any com- mercial use.

by MONACOR INTERNATIONAL. All rights reserved. A-1080.99.02.06.2011