DMT2004 - Multimeter Monacor - Free user manual and instructions

USER MANUAL DMT2004 Monacor

6 Replacing the Battery or the Fuses . . . . . . . . . . . 18 7 Specifications . . . . . . . . . . . . . . . . . . . . . . 18 Contents13 English 2 Safety Notes The meter corresponds to all required directives of the EU and is there- fore marked with . The meter corresponds to the relevant UK legislation and is therefore marked with UKCA.

WARNING: With this meter, dangerous voltages can be

measured. Particular attention should be paid when meas- uring 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

protected 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. Please observe the following items in any case:

The device is suitable for indoor use only. Protect it against dripping water and splash water, high air humidity and heat (admissible ambi- ent temperature range 0 – 50 °C).

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

No guarantee claims for the device and no liability for any resulting personal 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 device is to be put out of operation definitively, dispose of the device in accordance with local regulations.14 English 3 Applications This digital multimeter DMT-2004 is suited for measuring voltages up to

/~ 250 V, currents up to

10 A and resistances up to 2 MΩ. Further- more, it will test diodes and batteries. A buzzer is provided for testing the continuity. 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 (4)

from the position “OFF” to the desired function. An indication will appear on the display (1). If the dis- play remains dark or if the symbol appears, insert a newbattery

Power supply: 1 x 9 V battery ATTENTION! To prevent the danger of an electric shock, the probetips must be removed from the connecting jacks and the measuring spots prior to opening the housing. Fuses are inserted to pro-tect against overvoltage and fire hazard. Faulty fuses must only be replaced by fuses of the same type! F 10 AL

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

on the rear side of the meter.

4) Always switch off the meter after operation (set the selector switch to

“OFF”) to prevent unnecessary battery consumption. If the meter is not used for a longer period, it is recommended to remove the battery to prevent any damage due to battery leakage.

4.1 Connecting the test leads

The meter is provided with three test jacks:

1. The jack “COM” (7) in the middle is the common (−) jack for all meas-

urements. Connect the black test lead to this jack.

2. The jack “V Ω mA” (6) on the right is the common (+) jack for all

measurements, except for measuring currents exceeding 200 mA. Connect the red test lead to this jack.

3. For measuring currents exceeding 200 mA, connect the red test lead

to the jack “10A” (5) on the left. For measuring, remove the protective caps from the test tips and replace them after use.15 English 5 Measuring

WARNING: Measurements in circuits carrying more than

42V must only be made by persons able to recognize a haz- ard 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. 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! With unknown voltage values or current values, start with the highest measuring range to prevent overload of the meter. Then select the small- est possible measuring range (e. g. to measure

15 V, use the range “20 Vdc” instead of the range “200 Vdc”) to obtain a high accuracy. If a measuring range is exceeded, “1” will be displayed. In this case, select the next higher range.

5.1 Measuring voltages

WARNING: Take into account unexpected voltages on

objects to be measured. Capacitors, for example, may be dangerously charged even if the voltage source has been switched off.

Never use this meter for measuring circuits with corona discharges (high voltage). Danger to life!

The maximum voltage to be measured must not exceed

/~ 250 V, otherwise you will risk your life! Caution: When measuring voltages, do not connect the red test lead to the jack “10A” (5), otherwise the meter and the object to be measured may be damaged! For measuring AC voltages, set the switch (4) to one of the two ranges “Vac”; for measuring DC voltages, set it to one of the five ranges “Vdc”. 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.16 English

5.2 Measuring DC currents

The current to be measured must not exceed 10 A!

Currents between 200 mA and 10 A must not be measured for more than 30 seconds. There must be an interval of 15 minutes between the individual measurements, otherwise the meter and the test leads may be damaged! For measurements up to 200 mA, set the switch (4) to one of the three ranges “Adc”. For measurements exceeding 200 mA to 10 A, connect the red test lead to the jack “10A” (5) and set the switch to the position “10A”. Insert the meter via the test leads into the circuit to be measured and read the measured value on the display. If the red test tip is applied to the negative pole and the black tip to the positive pole, 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 the resistor out of the circuit. Set the selector switch (4) to one of the ranges “Ω”. Apply the test tips to the resistor and read the value on the display. If there is no resistor between the test tips or if the resistor value is ≥2 MΩ, “1” will be displayed.

5.4 Testing the continuity

Never test the continuity when voltage is applied, otherwise the meas- urement will be inaccurate. The continuity test will check the current flow for interruption. Set the selector switch (4) to the position . Apply the test tips to the meas- uring points. The resistance value (up to 1999 Ω) will be displayed. If it is smaller than 20 Ω approx., the internal buzzer will sound. If the circuit is open, “1” will be displayed.17 English

Never measure a diode when voltage is applied; always measure it separately, otherwise the measurement will be inaccurate. For this pur- pose, it may be necessary to solder the diode out of the circuit. Set the selector switch (4) to the position . Apply the black test tip to the cathode of the diode and the red test tip to the anode. With a measurement current of 1 mA max., the forward voltage up to 1.999 V will be displayed. If a value around 0 V is displayed, the diode has a short circuit. If “1” is displayed, the diode is interrupted, connected in reverse direc- tion (reverse the polarity of the diode) or has no contact to the test tips.

5.6 Testing batteries

It will be possible to test 1.5 V and 9 V batteries. According to the battery type, set the switch (4) to the position “1.5V” or “9V”. Apply the black test tip to the negative pole and the red test tip to the positive pole of the battery. The battery voltage will be displayed. Battery type Charge status high weak low 9 V battery > 8.2 V 7.2 V to 8.2 V < 7.2 V

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”(2). “HOLD” will appear on the display. To return to the present value, deactivate the function with the button “HOLD” (“HOLD” will disappear).

5.8 Activating the display illumination

To activate the display illumination, press the button (3). To deactivate it, press the button once again.18 English 6 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.

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.

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

contacts to the new battery and insert it into the compartment. Never put batteries in the household waste. Always dispose of the batteries in accordance with local regulations. Always replace a defective fuse by one of the same type (see Speci- fications).

3) Fasten the screws of the cover again before setting the meter into

Subject to technical modification. All rights reserved by MONACOR