DMT4004 - Multimeter Monacor - Free user manual and instructions

Product type	Automatic digital multimeter
Display	LCD 29 mm, 4000 counts (3 3/4 digits)
DC voltage measurement	400 mV – 1000 V
AC voltage measurement	400 mV – 1000 V, 50 – 400 Hz
DC current measurement	400 µA – 10 A
AC current measurement	400 µA – 10 A, 50 – 400 Hz
Resistance measurement	400 Ω – 40 MΩ
Capacitance measurement	4 nF – 200 μF
Frequency measurement	9,999 Hz – 9,999 MHz
Duty cycle measurement	0,1 % – 99,9 %
Diode test	Forward voltage up to 0,999 V
Continuity test	Buzzer if resistance < 40 Ω
Overvoltage category	CAT III 1000 V / CAT IV 600 V
Enclosure protection rating	IP 67
Power supply	9 V battery
Auto power off	After 15 minutes of inactivity
Additional functions	Manual range selection (RANGE), value hold (HOLD), relative measurement (REL), display backlight
Fuse protection	F10 AH / 1000 V (10 A) and F500 mAH / 1000 V (µA/mA)
Dimensions	83 × 180 × 54 mm
Weight	490 g
Operating temperature range	0 °C to 50 °C
Operating relative humidity	< 70 %
Cleaning	Soft, slightly damp cloth, without chemicals

Frequently Asked Questions - DMT4004 Monacor

How to replace the battery?

Fold out the stand, remove the two screws from the middle of the battery compartment cover, insert a 9 V battery observing polarity, then close.

How to use the HOLD function to freeze a measurement?

Press the HOLD button (7) to freeze the displayed value. 'HOLD' appears. Press again to deactivate.

How to measure AC voltage?

Turn the selector to V, then press MODE (3) to switch to 'AC'. Connect the red lead to the V Ω CAP Hz% jack and the black to COM. Apply the probes.

What does 'OL' on the display mean?

OL means 'Over Load'. Indicates that the measured value exceeds the selected range or that the circuit is open for a resistance.

How to change the internal fuses?

Unscrew the six housing screws (two under the stand). Replace the defective fuses with fuses of the same type: F10 AH/1000 V for the 10 A range and F500 mAH/1000 V for µA/mA.

Why does the device turn off by itself?

Auto power off activates after 15 minutes of inactivity. An audible signal warns one minute before. To turn it back on, press a button or turn the selector.

How to safely measure a capacitor?

Ensure the capacitor is discharged and no voltage is present. Turn the selector to CAP, apply the probes and wait a few seconds.

What are the meanings of the different jacks?

COM (black): common. V Ω CAP Hz% (red): voltage, resistance, capacitance, frequency. µA/mA: current up to 400 mA. 10A: current from 400 mA to 10 A.

How to activate the display backlight?

Hold the backlight button (9) pressed for 2 seconds to turn on. Press briefly to turn off.

What precautions to take for measuring high voltages?

For voltages > 42 V, wear safety gloves, keep fingers behind the probe guards, do not work alone, and do not measure in corona effect circuits.

USER MANUAL DMT4004 Monacor

GB Before you switch on ...

We hope you will enjoy using your new MONACOR unit. Please read these operating instructions carefully prior to operation and keep them for later reference.

The English test starts on page 12.

Messbereiche: .... 4 nF, 40 nF, 400 nF, 4 μF, 40 μF, 200 μF

Messgenauigkeit*

4 nF: ....±(5,0 % + 20 Digits)

40 nF: ....±(5,0% + 7 Digits)

400 nF, 4 μF, 40 μF: .. ± (3,0 % + 5 Digits)

200 μF: ....± (5,0 % + 5 Digits)

1 Operating Elements and Connections 12

2 Safety Notes 13

3 Applications 13

4 Operation 13

4.1 Inserting or replacing the battery .... 13

4.2 Attaching the ATTENTION! label .... 14

4.3 Connecting the test leads ..... 14

5 Measurements ..... 14

5.1 Voltage measurement ..... 14

5.2 Current measurement ..... 15

5.3 Resistance measurement ..... 15

5.4 Continuity buzzer ..... 15

5.5 Diode test 16

5.6 Capacitance measurement ..... 16

5.7 Frequency measurement ..... 16

5.8 Duty cycle measurement ..... 16

6 Additional Functions ..... 17

6.1 Manual ranging ..... 17

6.2 Data hold 17

6.3 Relative value measurement ..... 17

7 Replacing the Fuses ..... 17

8 Specifications 18

All operating elements and connections described can be found on the fold-out page 3.

1 Operating Elements and Connections

1 Button RANGE for manual ranging
2 Button Hz% for switching over between frequency measurement and duty cycle measurement When the selector switch (10) is set to current or voltage measurement, the button Hz% allows to switch to frequency measurement and duty cycle measurement and also back to current or voltage measurement.

3 Button MODE for switching over the test function (e. g. direct or alternating current measurement, diode test, or continuity test)

4 Jack 10 A for the red test lead for current measurement 400 mA – 10 A

5 Jack A/mA for the red test lead for current measurement up to 400 mA max.

6 Display

7 Button HOLD for freezing a measured value

8 Button REL for relative value measurement

9 Button for display illumination: To activate, keep the button pressed for 2 seconds; to deactivate, shortly actuate the button.

10 Selector switch for the test functions

11 Jack V Ω GAP Hz% for the red test lead, for all measurements except current measurements

12 Jack COM for the black test lead

13 Protective sleeve (2 pieces): For outdoor operation, insert these sleeves into the test jacks (4, 5, 11) that are not used to ensure protection of the unit in accordance with IP 67.

2 Safety Notes

This unit corresponds to all relevant directives of the EU and is therefore marked with €€

WARNING With this meter, dangerous volt-

ages can be measured. Particu- lar attention should be paid when measuring voltages equal to or higher than 42 V!

1. Wear protective gloves to protect you against electric shock.
2. When applying the probe tips, make sure that your fingers are protected behind the collar of the probe.
3. Never perform 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:

• When using the protective sleeves (13), the unit is protected in accordance with IP 67 and is also suitable for outdoor applications. However, protect it against extreme high or low temperatures (admissible ambient temperature range 0 – 50 °C).
• For cleaning the housing only use a soft cloth, slightly wet, if necessary; never use chemicals or abrasive detergents.
• No guarantee claims for the unit 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 unit 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 unit 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.

Dead batteries or defective rechargeable batteries do not belong in the household rubbish, always take them to a special waste disposal (e. g. collection container at your retailer).

3 Applications

This automatic digital multimeter with a 29 mm LC display (indication up to 4000) is suited for measuring:

- voltages up to 1000 V

- currents up to 10 A

– frequencies up to 10 MHz

– resistances up to 40 MΩ

- capacitances up to 200~ F

Furthermore, it allows to measure the duty cycle of electric signals and the forward voltage of diodes. For continuity tests, a buzzer is provided.

4 Operation

1) To switch on the multimeter, set the selector switch (10) from the position OFF to the desired function. If there is no indication on the display (6), insert a battery (chapter 4.1).
2) If required, unfold the tilt stand on the rear side to obtain a more convenient reading position of the display.
3) After operation, set the selector switch to the position OFF.

The unit will be switched off automatically if it is not used for 15 minutes. One minute before it is switched off automatically, there will be 5 short acoustic signals; when it is switched off, a longer acoustic signal will sound. To switch it on again, actuate a button or the selector switch.

4.1 Inserting or replacing the battery

If there is no indication on the display (6) after switching on or if the symbol on the left of the display shows a discharged battery, insert a 9 V battery or replace the battery.

1) Unfold the tilt stand on the rear side and remove the two central screws for the battery compartment cover.
2) Remove the cover and insert a 9 V battery as indicated in the compartment.
3) Close the battery compartment.

If the meter is not used for a longer period, remove the battery to prevent damage due to battery leakage.

4.2 Attaching the ATTENTION! label

Labels with important information in eight languages are supplied with the meter. Attach the corresponding label in your language to the field provided on the cover of the battery compartment!

ATTENTION!

To prevent the danger of an electric shock, the probe tips must be removed from the connecting jacks and the measuring spots prior to opening the housing.

Fuses are inserted to protect against overvoltage and fire hazard. Faulty fuses must only be replaced by fuses of the same type!

CE回

4.3 Connecting the test leads

The meter is equipped with four test jacks:

1. The jack COM (12) is the common (-) jack for all measurements. Connect the black test lead to this jack.
2. The jack V Ω CAP Hz% (11) is the common (+) jack for all measurements, except for current measurements. Connect the red test lead to this jack.
3. For current measurements up to 400 mA, disconnect the red test lead and connect it to the jack A/mA (5).
4. For current measurements between 400 mA and 10 A, disconnect the red test lead and connect it to the jack 10A (4).

IMPORTANT! For outdoor operation of the multimeter, insert the protective sleeves supplied (13) into the two test jacks that are not used. Only this will ensure protection of the unit in accordance with IP 67.

5 Measurements

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.

Prior to switching over to another test function, remove the probe tips from the object to be measured, otherwise the multimeter may be damaged!

5.1 Voltage measurement

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 perform measurements in electric circuits with corona discharges (high voltage) with this meter. Risk of electrocution!
• The maximum voltage to be measured must not exceed 1000 V=\~/\~, otherwise you will risk your life!

1) Set the selector switch (10) to the position V. After switching on, the DC voltage measurement will always be activated: The display (6) will indicate "DC" at the top on the left. For AC voltage measurements, switch over to the indication "AC" with the button MODE (3). The button MODE also allows to return to the DC voltage measurement.
2) The red test lead must be connected to the jack V Ω →CAP Hz% (11).
Caution! The test lead must not be connected to the jack 10A (4) or A/mA (5), otherwise the meter and the object to be measured may be damaged.
3) Apply the probe tips to the object to be measured and read the value on the display. If, for DC voltage measurements, the red probe tip is applied to the negative pole and the black tip to the positive pole, a minus sign will precede the measured value.
4) During an AC voltage measurement, the button Hz% (2) allows to switch over to frequency measurement and duty cycle measurement, however, the input sensitivity will not be as high and the frequency range will not be as large as that for a measurement in the position Hz% of the selector switch:

Measuring range	Sensitivity Frequency range
4 V~	≥1.5 V~	5 Hz – 10 kHz
40 V~, 400 V~	≥10 V~	5 Hz – 20 kHz
	≥20 V~	5 Hz – 200 kHz
1000 V~	≥420 V~	50 Hz – 1 kHz

To return to AC voltage measurement, press the button Hz% once or twice so that the display will indicate "AC" and "V" again.

5.2 Current measurement

• The current to be measured must not exceed 10 A!
• Currents between 1 A and 10 A must not be measured for more than 30 seconds, 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 A/mA (5); for measurements between 400 mA and 10 A, connect it to the jack 10A (4). In case of unknown currents, start the measurement with the 10 A range as a precaution.

Caution! Never make a voltage measurement when the test lead is connected to the jack A/mA or 10A, otherwise the meter and the voltage source may be damaged.

2) According to the current to be measured, set the selector switch (10) to the following position:

Current measured	Position
< 4000 μA	μA
4 – 400 mA	mA
400 mA – 10 A	10A

3) After switching on, the direct current measurement will always be activated: The display (6) will indicate "DC" at the top on the left. For alternating current measurements, switch over to the indication "AC" with the button MODE (3). The button MODE also allows to return to the direct current measurement.
4) Insert the meter via the test leads into the circuit to be measured and read the measured value on the display. If, for direct current measurements, the red probe tip is applied to the negative pole and the black tip to the positive pole, a minus sign will precede the measured value.

If the current measured exceeds the admissible value of the measuring range, warning signals will sound and "OL." (overload) will appear on the display. In this case, select the next higher range.

5) During an alternating current measurement, the button Hz% (2) allows to switch over to frequency measurement and duty cycle measurement, however, the input sensitivity will not be as high and the frequency range will not be as large as that for a measure-

ment in the position Hz% of the selector switch.

Measuring range	Sensitivity Frequency range
400 mA~ ≥ 45 mA	5 Hz - 5 kHz
10 A~ ≥ 4 A	5 Hz - 1 kHz

To return to alternating current measurement, press the button Hz% once or twice so that the display will indicate "AC" and "A", "mA", or μA" again.

5.3 Resistance measurement

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

Set the selector switch (10) to the position and apply the probe tips to the resistor. Read the resistance value on the display. As long as there is no resistor between the probe tips or the probe tips are not shorted, the display will show “OL.” to indicate an infinitely high value.

5.4 Continuity buzzer

The continuity buzzer is used for checking if current flows without interruption.

• Never perform a continuity test when voltage is applied, otherwise the meter may be damaged and the measurement will be inaccurate.
  1) Set the selector switch (10) to the position . At the top of the display the symbol for diode test will appear.
  2) Switch over to continuity test with the button MODE (3). At the top of the display the buzzer symbol will appear.
  3) Apply the probe tips to the corresponding measuring points. If the resistance between the points is less than 40 Ω, the continuity buzzer will sound. The resistance value will be indicated on the display up to 400 Ω; in case of higher values, the overload indication “OL.” will appear.

5.5 Diode test

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

Set the selector switch (10) to the position At the top of the display the symbol for diode test will appear. When the probe tips are applied to the diode in forward direction, the forward voltage up to 0.999 V will be indicated. The positive pole of the measuring current (approx. 0.3 mA) is applied to the red probe tip.

With an indication of approx. 0 V, the diode has a short circuit. If “OL.” is indicated, the diode has a higher forward voltage than 1 V (e.g. LEDs), the diode is interrupted, connected in reverse direction (reverse the polarity of the diode), or has no contact to the probe tips.

5.6 Capacitance measurement

The DMT-4004 allows to measure capacitors with a capacitance up to 200 F.

WARNING

Never measure a capacitor when it is charged or when the operating voltage is applied, otherwise you will risk an electric shock. Furthermore, the measurement will be inaccurate.

Switch off the power supply and discharge the capacitor before soldering it out of the circuit.

Set the selector switch (10) to the position CAP and apply the probe tips to the capacitor. The measuring process may require a few seconds so that it will take a while until the correct value is indicated. If the capacitance is higher than 200 F, “OL.” will appear to indicate that the measuring range has been exceeded.

5.7 Frequency measurement

This meter allows to measure frequencies up to 10 MHz. The sensitivity is:

Frequency Sensitivity
≤1 MHz < 0.5 V~
>1 MHz >3 V~

Set the selector switch (10) to the position Hz%. Apply the probe tips to the measuring points and read the frequency on the display.

In the AC voltage range and in the alternating current ranges, a frequency measurement is also possible (CHAPTER 5.1 and 5.2).

5.8 Duty cycle measurement

The meter allows to measure the duty cycle in %. The duty cycle is the ratio of the positive signal part to the period, e. g.:

Measuring range: .. 0.1 % to 99.9 %

Sensitivity: ....<0.5V\~

Frequency range: . 5Hz – 150 kHz

The positive signal part must be 100 s–100 ms.

1) Set the selector switch to the position Hz%. The frequency measurement is activated.
2) Use the button Hz% (2) to switch over to duty cycle measurement. On the right of the display, the indication will change from "Hz" to "%".
3) Apply the probe tips to the measuring points and read the duty cycle on the display.
4) To return to frequency measurement, press the button Hz% once again.

In the AC voltage range and in the alternating current ranges, a duty cycle measurement is also possible ( I chapters 5.1 and 5.2).

6 Additional Functions

6.1 Manual ranging

When "AUTO" appears at the top on the left of the display, the optimum measuring range for a test function will always be selected automatically.

1) To hold a range selected automatically, press the button RANGE (1). The indication "AUTO" will disappear.
2) Each time the button RANGE is pressed, the next higher range will be selected. Thus, the resolution of the measured value will decrease, however, this will prevent a continuous switch-over in case the measured value varies between two ranges.

When the highest possible measuring range is reached, the smallest range will be selected when the button is pressed again. If the range is too small, "OL." (overload) will be indicated.

3) To return to autoranging, keep the button RANGE pressed for approx. 2 seconds until "AUTO" reappears on the display or select another test function with the selector switch (10).

6.2 Data Hold

It is possible to freeze a measured value indicated on the display. This will allow you, for example, to still read the value even if the probe tips have already been removed from the object to be measured. For this purpose, press the button HOLD (7). At the top of the display "HOLD" will appear.

To return to the current measured value, deactivate the function with the button HOLD ("HOLD" will disappear). The function will also be deactivated when another test function is selected with the selector switch (10).

6.3 Relative value measurement

The relative value measurement allows to indicate deviations from a defined measured value. The function can be activated when measuring current, voltage, resistance, and capacitance.

1) Perform a measurement. When the desired reference value is indicated, press the button REL (8). At the top of the display, the indication "REL" will appear.
It will not be possible to activate the function when the display indicates "OL.".
2) When the measured value changes, the deviation from the reference value will be indicated.
For relative value measurement, auto-ranging will be deactivated. Once the measuring range has been exceeded, the display will indicate "OL.".
3) To deactivate the relative value measurement, actuate the button REL once again. If required, activate autoranging again with the button RANGE (keep the button RANGE pressed for approx. 2 seconds). The relative value measurement will also be deactivated when another test function is selected.

7 Replacing the Fuses

If it is not possible to measure currents, check the internal fuses and have them replaced by skilled personnel.

WARNING

Prior to opening the housing, remove the probe tips from the measuring points and from the connection jacks, otherwise you will risk an electric shock.

1) Unscrew the six screws for the housing shell (two screws are located underneath the tilt stand) and remove the housing shell.
2) Always replace defective fuses by fuses of the same type only:

μA and mA range: F500 mAH/1000 V 10 A range: F10 AH/1000 V

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

DC voltage/AC voltage

Measuring ranges: .... 400 mV, 4 V, 40 V, 400 V, 1000 V

Measuring accuracy*

400 mV÷....±(0.5% + 2 digits)

4 - 400 V: .... ±(1.2 % + 2 digits)

1000 V÷ ....±(1.5% + 2 digits)

400 mV\~:....±(1.5% + 70 digits)

4 V\~: ....±(1.2% + 3 digits)

40 V\~, 400 V\~: ..... ±(1.5% + 3 digits)

1000 V\~: ....±(2.0% + 4 digits)

Input resistance: ..... 7.8 MΩ

Overload protection: ... 1000 V\~

Frequency range at V\~: 50 – 400 Hz

Direct current/alternating current

Measuring ranges: .... 400 μA, 4 mA, 40 mA, 400 mA, 10 A

Measuring accuracy*

400 μA÷ ....± (1.0 % + 3 digits)

4 - 400 mA: ..... ±(1.5 % + 3 digits)

10 A÷ ....±(2.5% + 5 digits)

400 mA\~:....±(1.5% + 5 digits)

4 - 400 mA \~: . . . . . ±(1.8 % + 5 digits)

10 A ∼: ....±(3.0 % + 7 digits)

Protection

μA and mA range: ... F500 mAH/1000 V

10 A range: ..... F10 AH/1000 V

Frequency range at A\~: 50 – 400 Hz

Resistance

Measuring ranges: .... 400 Ω, 4 kΩ, 40 kΩ, 400 kΩ, 4 MΩ, 40 MΩ

Measuring accuracy*

400 Ω: ....±(1.2 % + 4 digits)

4 kΩ: ....±(1.0 % + 2 digits)

40 kΩ, 400 kΩ, 4 MΩ: ± (1.2 % + 2 digits)

40 MΩ: ....±(2.0 % + 3 digits)

Overload protection: ... 600 V\~

Capacitance

Measuring ranges: .... 4 nF, 40 nF, 400 nF, 4 μF, 40 μF, 200 μF

Measuring accuracy*

4 nF: ....±(5.0 % + 20 digits)

40 nF: ....±(5.0 % + 7 digits)

400 nF, 4 μF, 40 μF: .. ±(3.0 % + 5 digits)

200 μF: ....±(5.0 % + 5 digits)

Overload protection: ... 600 VH\~

Frequency

Values only for position Hz% of selector switch

Measuring ranges: .... 9,999 Hz, 9,999 kHz 99,99 Hz, 99,99 kHz 999,9 Hz, 999,9 kHz 9,999 MHz

Measuring accuracy*

9.999 Hz, 99.99 Hz: .. ±(1.5 % + 5 digits)

999.9 Hz - 999.9 kHz: ±(1.2 % + 3 digits)

9.999 MHz: .... ±(1.5 % + 4 digits)

Sensitivity

at ≤ 1 MHz: ..... 0.5 V\~

at > 1 MHz: ..... 3 V\~

Overload protection: ... 600 V\~

Duty cycle

Values only for position Hz% of selector switch

Measuring range: ..... 0.1 – 99.9 %

Measuring accuracy* . . ±(1.2 % + 2 digits)

Sensitivity: 0.5 V\~

Frequency range: ..... 5 Hz – 150 kHz

Overload protection: ... 600 V\~

Diode test

Indication: .... forward voltage up to 0.999 V--

Measuring accuracy*: .. ±(10 % + 5 digits)

Measuring current: . . . approx. 0.3 mA

Max. measuring voltage: approx. 1.5 V—

Overload protection: ... 600 V\~

* at 23 °C, ±5 % relative humidity < 70 %

Continuity buzzer

Response threshold: ... < 40 Ω

Measuring current: .... approx. 0.3 mA

Overload protection: ... 600 V\~

General information

Display: 29 mm LCD, 3^3/4 digits

Measuring rate: ..... 2 measurements per second

Overvoltage category: . . CAT III 1000 V and CAT IV 600 V

Protection class

of housing: IP 67

Power supply: ..... 9 V battery

Operating conditions: .. 0 – 50 °C, relative humidity < 70 %

Dimensions: 83 × 180 × 54 mm

Weight: 490 g

Subject to technical modification.

Table des matières

Campo di misura: ... 0,1% a 99,9%

4 nF: .... ± (5,0 % + 20 digit)

40 nF: ....± (5,0% + 7 digit)

400 nF, 4 μF, 40 μF: ..± (3,0 % + 5 digit)

200 μF: . . . . . . . . ± (5,0 % + 5 digit)

Protezione contro

Meetbereiken: ..... 4 nF, 40 nF, 400 nF, 4 μF, 40 μF, 200 μF

Meetnauwkeurigheid*

4 nF: ....±(5,0 % + 20 digits)

40 nF: ....±(5,0% + 7 digits)

400 nF, 4 μF, 40 μF: .. ± (3,0 % + 5 digits)

200 μF: . . . . . . . . ± (5,0 % + 5 digits)

Overbelastings-

Zakres pomiaru: ..... 0,1% to 99,9 %

Zakresy pomiaru: ..... 4 nF, 40 nF, 400 nF, 4 μF, 40 μF, 200 μF

Dokładność pomiaru*

4 nF: ....±(5,0% + 20 cyfr)

40 nF: ....±(5,0 % + 7 cyfr)

400 nF, 4 μF, 40 μF: .. ±(3,0 % + 5 cyfr)

200 μF: ....±(5,0 % + 5 cyfr)

Zabezpieczenie