DVM93 - Multimeter VELLEMAN - Free user manual and instructions

Product type	Digital multimeter
Brand	Velleman
Model	DVM93
Display	LCD, 3 1/2 digits, 2000 counts
DC voltage	200 mV to 600 V
AC voltage	200 mV to 600 V
DC current	200 µA to 10 A
AC current	200 µA to 10 A
Resistance	200 Ω to 20 MΩ
Capacitance	2 nF to 200 µF
Temperature	-20 °C to +1000 °C (with probe)
Diode and continuity test	Yes
Transistor hFE test	Yes
Power supply	9 V battery
Dimensions (L x W x H)	175 x 82 x 43 mm
Weight	280 g
Safety	CAT II 600 V
Included accessories	Test leads, thermocouple, battery
Maintenance and cleaning	Clean with a soft cloth, do not use solvents
Spare parts and repairability	Parts available, repair by authorized service

Frequently Asked Questions - DVM93 VELLEMAN

How to change the battery of the DVM93?

To change the battery, turn off the multimeter and remove the back cover. Replace the used 9V battery with a new one, respecting polarity. Close the cover.

How to measure DC voltage?

Turn the selector to the V DC position. Connect the black probe to COM and the red probe to V/Ω. Place the tips on the measurement points. The reading is displayed.

How to test a diode?

Place the selector on the diode symbol. Connect the black probe to COM and the red probe to V/Ω. Touch the cathode with the black probe and the anode with the red probe. The forward voltage is displayed.

What does the 'OL' display mean?

OL stands for OverLoad. It indicates that the measured value exceeds the selected range. Choose a higher range.

How to measure continuity?

Turn the selector to the continuity symbol (beep). Connect the probes to COM and V/Ω. If the resistance is less than 30 Ω, a beep sounds.

What safety precautions should be observed?

Never measure voltages higher than 600 V. Use appropriate probes. Do not use the device in a humid or explosive environment. Disconnect the probes before changing functions.

Can I measure temperature with the DVM93?

Yes, with the supplied thermocouple probe. Place the selector on the °C/°F position, insert the probe into the dedicated sockets (often COM and V/Ω). Pay attention to polarity.

How to measure AC current?

Turn the selector to the AC A range. Connect the black probe to COM and the red probe to 10A (for high current) or mA (for low). Insert the multimeter in series in the circuit.

Does the multimeter require calibration?

The DVM93 is factory calibrated. For professional use, annual recalibration is recommended. Contact Velleman or an authorized service.

What is the warranty of the DVM93?

The warranty covers material and manufacturing defects for 2 years from the date of purchase. Probes and battery are excluded.

USER MANUAL DVM93 VELLEMAN

Multifunctional Digital Multimeter

Multifunctionele Digitale Multimeter

2 FUNKTIONS- UND BEREICHSSCHALTER
3 "mA"-BUCHSE
4 "COM"-BUCHSE
5 "10A"-BUCHSE
6 "V/Ω"-BUCHSE

© COPYRIGHT NOTICE

This manual is copyrighted. The copyright to this manual is owned by Velleman nv. All worldwide rights reserved. No part of this manual may be copied, reproduced, translated or reduced to any electronic medium or otherwise without the prior written consent of the copyright holder.

© AUTEURSRECHT

© INFORMACJA O PRAWACH WŁASNOŚCI

To all residents of the European Union

Im portant environmental information about this product

This symbol on the device or the package indicates that disposal of the device after its lifecycle could harm the environment. Do not dispose of the unit (or batteries) as unsorted municipal waste; it should be taken to a specialized company for recycling. This device should be returned to your distributor or to a local recycling service. Respect the local environmental rules.

If in doubt, contact your local waste disposal authorities.

Your DVM93 is a CAT II 600 digital multi-meter with a 3 12 digit LCD display. It is suited for professional, academic and home applications.

The DVM93 measures DC and AC voltage, DC and AC current, resistance, continuity; diode, transistor (hFE) and battery testing.

Thank you for choosing Velleman! Please read the manual thoroughly before bringing this device into service. If the device was damaged in transit, do not install or use it and contact your dealer.

Refer to the Velleman® Service and Quality Warranty on the last pages of this manual.

2. Used symbols

	This symbol indicates: Read instructionsNot reading the instructions and manual can lead to damage, injury or death.
	This symbol indicates: DangerA hazardous condition or action that may result in injury or death
	This symbol indicates: Risk of danger/damageRisk of a hazardous condition or action that may result in damage, injury or death
	This symbol indicates: Attention; important informationIgnoring this information can lead to hazardous situations.
~	AC (Alternating Current)
	DC (Direct Current)
	Both AC and DC
	Double insulation (class II-protection)
	Earth
	Fuse
	Capacitor
	Diode
	Continuity
	o off /

3. Warnings and safety Instructions

	Read this manual thoroughly. Familiarise yourself with the functions of the device before actually using it.
	Only use the device for its intended purpose. Using the device in an unauthorized way will void the warranty. Damage caused by disregard of certain guidelines in this manual is not covered by the warranty and the dealer will not accept responsibility for any ensuing defects or problems.
	Follow the instructions below to guarantee a safe use of the meter and all its functionalities.
	During use of the meter, respect all directives concerning protection against electroshocks and misuse. Never exceed the indicated limits.
	WARNING:This instrument does not contain operator servicable parts. Service by qualified persons only.Remark: refer to the warning on the back of the meter (top).
	WARNING: To avoid electrical shock always remove the test leads prior to opening case. To prevent fire, install fuses with AMP/VOLT rating as shown.
DVM93 Rev. 01
	Remark: refer to the warning on the battery compartment
	Keep the device away from children and unauthorised users.
	Protect this device from shocks and abuse. Avoid brute force when operating.
	Avoid cold, heat and large temperature fluctuations. When the unit is moved from a cold to a warm location, leave it switched off until it has reached room temperature. This to avoid condensation and measuring errors.
	This is an installation category CAT II 600V measuring instrument. Never use this equipment in a higher category than indicated. Refer to §4 Overvoltage /installation category.
	Pollution degree 2-device. For indoor use only. Keep this device away from rain, moisture, splashing and dripping liquids. Not for industrial use. Refer to §5 Pollution degree.
	Before each use, make sure the test probes are in good condition. Always place your fingers behind the protective edges of the test probes while measuring! Never touch free terminals when the meter is connected to a circuit.
	Make sure the meter is in the appropriate measuring range before connecting it to a test circuit.
	Risk of electric shock during operation. Be very careful when measuring live circuits. Use extreme caution when measuring voltages higher than 60Vdc or 30Vac rms.
	Do not measure circuits that may contain voltages >600V
	Do not measure current in circuits with voltages >250V
	Do not conduct resistance, diode- or continuity measurements on live circuits. For testing transistors use the included adaptor socket.
	When measuring currents up to 10A, max. 1.5s continuous measurement followed by a 15 minutes break between 2 measurements.
	When carrying out measurements on a TV set or switching power circuits, always be aware that high amplitude voltage pulses at the test points might damage the meter.
	Do not replace internal parts yourself. Replace damaged or lost accessories by identical ones with the same specifications. Order spare accessories e.g. test probes at your dealer.
	Switch off the meter and remove test probes prior to replacing the battery or fuses.
	All modifications of the device are forbidden for safety reasons. Damage caused by user modifications to the device is not covered by the warranty.

4. 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:

CAT I	A CAT I-rated meter is suitable for measurements on protected electronic circuits which are not directly connected to mains power, e.g. electronics circuits, control signals..
CAT II	A CAT II-rated meter is suitable for measurements in CAT I-environments and mono-phase appliances which are connected to the mains by means of a plug and circuits in a normal domestic environment, provided that the circuit is at least 10m apart from a CAT III- or 20m apart from a CAT IV-environment. E.g. household appliances, portable tools...
CAT III	A CAT III-rated meter is suitable for measurements in CAT I- and CAT II-environments, as well as for measurements on (fixed) mono- or poly-phased appliances which are at least 10m apart from of a CAT IV-environment, and for measurements in or on distribution level equipment (fuse boxes, lighting circuits, electric ovens).
CAT IV	A CAT IV-rated meter is suitable for measuring in CAT I-, CAT II- and CAT III-environments as well as on the primary supply level.Note that for all measurements on equipment for which the supply cables run outdoors (either overhead or underground) a CAT IV meter must be used.

Warning:

This device was designed in accordance with EN 61010-1 installation category CAT II 600V. This implies that certain restrictions in use apply that are related to voltages and voltage peaks which can occur within the environment of use. Refer to the table above.

This device is only suitable for measurements up to 600V in a CAT II environment.

5. Pollution degree

IEC 61010-1 specifies different types of pollution environments, for which different protective measures are necessary to ensure safety. Harsher environments require more protection, and the protection against the pollution which is to be found in a certain environment depends mainly on the insulation and the enclosure properties. The pollution degree rating of the DVM indicates in which environment the device may be used.

Pollution degree 1	No pollution or only dry, nonconductive pollution occurs. The pollution has no influence (only to be found in hermetically sealed enclosures).
Pollution degree 2	Only nonconductive pollution occurs. Occasionally, temporary conductivity caused by condensation is to be expected (home and office environments fall under this category).
Pollution degree 3	Conductive pollution occurs, or dry nonconductive pollution occurs that becomes conductive due to condensation that is to be expected (industrial environments and environments exposed to outside air - but not in contact with precipitation).
Pollution degree 4	The pollution generates persistent conductivity caused by conductive dust or by rain or snow. (exposed outdoor environments and environments where high humidity levels or high concentrations of fine particles occur)

Warning:

This device was designed in accordance with EN 61010-1 pollution degree 2. This implies that certain restrictions in use apply that are related to pollution which can occur within the environment of use. Refer to the table above.

This device is only suitable for measurements in Pollution degree class 2 environments.

6. Maintenance / battery and fuse replacement

	WARNING: To avoid electrical shock always remove the test leads prior to opening case. To prevent fire, install fuses with AMP/VOLT rating as shown.Remark: refer to the warning on the back of the meter
	Do not replace internal parts yourself. Replace damaged or lost accessories by identical ones with the same specifications. Order spare accessories e.g. test probes at your dealer.
	Switch off the meter and remove test leads prior to replacing the battery or fuses.

a. General maintenance:

- Wipe the device regularly with a moist, lint-free cloth. Do not use alcohol, solvents or abrasive products.

b. Battery/fuse replacement

• Replace the battery as soon as the "in dication appears on the display. Low/bad batteries can produce false readings. The fuse rarely needs to be replaced and a blown fuse is almost always caused by a human error.
• Switch off the multi-meter.
• Remove test probes from the circuit under test. Remove all test leads from the input jacks.
• Remove the protective cover and release the 2 screws at the back of the meter and gently open the housing.
• Replace the battery (9V 6LF22). Do not use rechargeable batteries and insert following the right polarity.
• Replace the fuse: ceramic – high breaking capacity 6.3x32mm 1 x F500mA/600V & 1 x F10A/250V
• Close the housing and tighten the 2 screws. Put the protective cover back.

7. Front panel Description

Refer to the illustrations on page 2 of this manual.

8. Operating instructions

Risk of electric shock during operation. Be very careful when measuring live circuits.

Before measuring, always make sure the meter and/or test probes are not damaged and verify the connections, selected function and range.

• Never exceed the limit value for protection. This limit value is listed separately in the specifications for each range of measurement.
• Do not touch unused terminals when the meter is linked to a circuit which is being tested.
• Only use the meter in the indicated overvoltage/installation category. Never measure voltages that might exceed the indicated category values.
• When a measuring range is unknown, always select the highest possible range and lower to the appropriate range.
• Disconnect the test leads from the tested circuit before rotating the range selector in order to change functions.
• When carrying out measurements on a TV set or switching power circuits, always remember that high amplitude voltage pulses at the test points might damage the meter.
• Always be careful when working with voltages above 60Vdc or 30Vac rms. Keep your fingers behind the probe barriers at all times during measurement.
• Do not measure current in circuits with voltages > 250V
• Never perform resistance, diode, transistor or continuity measurements on live circuits. Make sure all capacitors in the circuit are discharged.
• "Hold" Function: Press HOLD to freeze the value onto the display. Press again to resume normal operation.

8.1 DC Voltage measurements

Do not measure circuits where voltages > 600V CAT II may occur.

Always be careful when working with voltages above 60Vdc or 30Vac rms. Keep your fingers behind the probe barriers at all times during measurement. Do not touch unused terminals when the meter is linked to a circuit which is being tested.

1. Connect the black test lead (-) to the "COM" jack and the red test lead (+) to the "V/Ω" jack.
2. Select the appropriate V-ran ge with the FUNCTION switch. When the measuring range is unknown, always select the highest possible range and lower to the appropriate range.
3. Connect the test leads to the circuit.
4. The measured value and the polarity of the red test lead are displayed on the LCD.

8.2 AC Voltage measurements

Do not measure circuits where voltages > 600V CAT II may occur.

Always be careful when working with voltages above 60Vdc or 30Vac rms. Keep your fingers behind the probe barriers at all times during measurement. Do not touch unused terminals when the meter is linked to a circuit which is being tested.

1. Connect the black test lead (-) to the "COM" jack and the red test lead (+) to the "V/Ω" jack.
2. Select the appropriate V \~ range with the FUNCTION switch. When the measuring range is unknown, always select the highest possible range and lower to the appropriate range.
3. Connect the test leads to the circuit.
4. The measured value appears on the LCD display.

8.3 DC current measurements

Do not measure current in circuits with voltages > 250V

Current measurements: mA jack max. 200mA; for measurements up to 10A use the 10A jack. When measuring currents up to 10A, max. 15s continuous measurement followed by a 15 minutes break between 2 measurements.

Always be careful when working with voltages above 60Vdc or 30Vac rms. Keep your fingers behind the probe barriers a: all times during measurement.

1. Connect the black test lead (-) to the "COM" jack and the red test lead (+) to the "mA" jack for measurements of max. 200mA or to the "10A" jack for measurements between 200rnA and 10A.

2. Select the A = range with the FUNCTION switch. For measurements < 200mA, when the measuring range is unknown, always select the highest possible range and lower to the appropriate range.

3. Connect the test leads IN SERIES with the load under measurement.

4. The polarity of the red test lead and the measured current are displayed on the LCD.

8.4 AC current measurements

Do not measure current in circuits with voltages > 250V

Current measurements: mA jack max. 200mA; for measurements up to 10A use the 10A jack. When measuring currents up to 10A, max. 15s continuous measurement followed by a 15 minutes break between 2 measurements.

Always be careful when working with voltages above 60Vdc or 30Vac rms. Keep your fingers behind the probe barriers at all times during measurement.

1. Connect the black test lead (-) to the "COM" jack and the red test lead (+) to the "mA" jack for measurements of max. 200mA or to the "10A" jack for measurements between 200mA and 10A.
2. Select the A\~ range with the FUNCTION switch. For measurements < 200mA, when the measuring range is unknown, always select the highest possible range and lower to the appropriate range.
3. Connect the test leads IN SERIES with the load under measurement.
4. The measured value is displayed on the LCD.

8.5 Measuring Resistance

Do not perform resistance measurements on live circuits and make sure all capacitors are completely discharged.

1. Connect the black test lead (-) to the "COM" jack and the red test lead (+) to the "W/Ω" jack.
2. Select the -range with the FUNCTION switch. When the measuring range is unknown, always select the highest possible range and lower to the appropriate range.
3. Connect the test leads with the resistance and read the value from the display.

Remarks :

The meter may need a few seconds to produce a stable reading for resistance measurements in excess of 1MΩ.
The over-range indication ("1.") will appear on the display if the input is not connected or if the resistance being measured exceeds the max. value of the selected range.

8.6 Testing Diodes

Do not perform diode measurements on live circuits and make sure all capacitors are completely discharged.

1. Connect the black test lead (-) to the "COM" jack and the red test lead (+) to the "V/Ω" jack.
2. Select the ▶ ran with the FUNCTION switch.
3. Connect the red test lead to the anode and the black test lead to the cathode of the diode to be tested. The forward voltage drop is now displayed. When the connection is reversed, the display shows "1".

8.7 Audible continuity test

Do not perform continuity measurements on live circuits and make sure all capacitors are completely discharged.

1. Connect the black test lead (-) to the "COM" jack and the red test lead (+) to the "V/Ω" jack.
2. Select the range with the FUNCTION switch.
3. Connect the test probes to two random points of the circuit to be tested. The incorporated buzzer is activated if the resistance between the two test porbes is lower than ± 30 .

8.8 Transistor Test (hFE)

Do not perform transistor measurements on live circuits. Use the included adaptor socket

1. Connect the black test lead (-) to the "COM" jack and the red test lead (+) to the "mA" jack.
2. Select th hFE-range with the FUNCTION switch.
3. Determine whether the transistor is of the NPN- or PNP-type and locate the emitter, the base and the collector. Insert the leads into the proper holes in the included transistor socket.
4. Connect the black test lead (-) to the "COM" terminal and the red test lead (+) to the other terminal of the transistor socket.
5. The display will show the approximate hFE-value at the moment of testing. Base current 10μA, Vce 2.8V..

8.9 Battery/ testing (BATT)

Do not perform battery tests on batteries connected to a circuit.

1. Connect the black test lead to the "COM" jack and the red test lead to the "VΩ" jack.
2. Set the rotary selector at the "BATT" range that matches the nominal voltage of the battery.
3. Connect the black test lead to the negative pole and the red test lead to the positive pole of the battery.
4. The measured voltage is shown on the display.

9. Technical specifications

Regulations concerning environment of use:

Use this meter only for measurements in CAT I and CAT II environments (see §4)

Use this meter only in a pollution degree 2 environment (see §5)

Ideal temperature	18-28°C
Ideal relative humidity	75%
Max. altitude	2000m

9.1. General

Max. Voltage	600V CAT II
Display	3 1⁄2 digit LCD, 2 to 3 samples/sec.
Measuring method	Dual-slope integration A/D convertor
Fuse Protection	200mA-range : F0.5A/600V (ceramic)10A-range : F10A/250V (ceramic)
Power Supply	9V alkaline battery 6LR61
Ranging Method	manual
Polarity Indication	" - " is displayed
Overrange Indication	" 1 . " is displayed automatically
Battery-Low Indication	" [+] " is displayed
Operating Temperature	0°C to 40°C
Storage Temperature	-10°C to 50°C
Dimensions	85 x 165 x 32mm
Weight	340g (incl. battery)

9.2. DC Mtage

Range	Resolution	Accuracy
200mV	100μV	± 0.8% of rdg ± 1 digit
2V	1mV
20V	10mV
200V	100mV
600V	1V	± 1.2% of rdg ± 2 digits

Input Impedance : 10MΩ for all ranges

9.3. AC Voltage

Range	Resolution	Accuracy
2V	1mV	± 0.8% of rdg ± 3 digits
20V	10mV
200V	100mV
600V	1V	± 1.2% of rdg ± 3 digits

Input Impedance : 10MΩ for all ranges

Frequency Range : 40 to 400Hz

9.4. DC Current

Range	Resolution	Accuracy
2mA	1μA	± 0.8% of rdg ± 1 digit
20mA	10μA
200mA	100μA	± 1.2% of rdg ± 1 digit
10A	10μA	± 2% of rdg ± 5 digits

Overload Protection : 200mA range ceramic fuse F500mA/250V–10A range ceramic fuse F10A/250V

9.5. AC uGrent

Range	Resolution	Accuracy
2mA	1μA	± 1.2% of rdg ± 3 digits
20mA	10μA
200mA	100μA	± 2.0% of rdg ± 3 digits
10A	10mA	± 3.0% of rdg ± 7 digits

Overload Protection : 200mA range ceramic fuse F500mA/250V- 10A range ceramic fuse F10A/250V

Frequency Range : 40 to 400Hz

9.6. Resistance

Range	Resolution	Accuracy
200Ω	0.1Ω	± 1.0% of rdg ± 3 digits
2kΩ	1Ω	± 1.8% of rdg ± 8 digits
20kΩ	10Ω
200kΩ	100Ω
2MΩ	1kΩ
20MΩ	10kΩ

9.7. Diode and audible continuity test

Range	parameters
	Built-in buzzer sounds if resistance < ± 30ΩOpen circuit measuring voltage: ± 2.8Vdc
	Forward test current(D C): ± 1mAReversed test voltage: ± 2.8Vdc

9.8. Battery test

Range	Parameter	Accuracy
1.5V	Test current 60mA	± 0.8% of rdg ± 3 digits
9V	Test current 12mA

9.9. hFE ransistortest

Range	Parameters
hFE	Display of current gain value 1-1000test current base 10 A , VCE ± 2.8Vdc

10. Acc essories

• set of test leads
• 1 battery of 9V
• 1 user manual
  • 1 transistor test adaptor

Use this device with original accessories only. Velleman nv cannot be held responsible in the event of damage or injury resulted from (incorrect) use of this device.

For more info concerning this product and the latest version of this user manual, please visit our website www.velleman.eu.

The information in this manual is subject to change without prior notice.

9.2. Tension continue

Vel leman® Service and Quality Warranty

Velleman® has over 35 years of experience in the electronics world and distributes its products in more than 85 countries.

All our products fulfil strict quality requirements and legal stipulations in the EU. In order to ensure the quality, our products regularly go through an extra quality check, both by an internal quality department and by specialized external organisations. If, all precautionary measures notwithstanding, problems should occur, please make appeal to our warranty (see guarantee conditions).

General Warranty Conditions Concerning Consumer Products (for EU):

- All consumer products are subject to a 24-month warranty on production flaws and defective material as from the original date of purchase.

- Velleman® can decide to replace an article with an equivalent article, or to refund the retail value totally or partially when the complaint is valid and a free repair or replacement of the article is impossible, or if the expenses are out of proportion. You will be delivered a replacing article or a refund at the value of 100% of the purchase price in case of a flaw occurred in the first year after the date of purchase and delivery, or a replacing article at 50% of the purchase price or a refund at the value of 50% of the retail value in case of a flaw occurred in the second year after the date of purchase and delivery.

• Not covered by warranty:

- all direct or indirect damage caused after delivery to the article (e.g. by oxidation, shocks, falls, dust, dirt, humidity...), and by the article, as well as its contents (e.g. data loss), compensation for loss of profits;

- frequently replaced consumable goods, parts or accessories such as batteries, lamps, rubber parts, drive belts... (unlimited list);

- flaws resulting from fire, water damage, lightning, accident, natural disaster, etc. ...;

- flaws caused deliberately, negligently or resulting from improper handling, negligent maintenance, abusive use or use contrary to the manufacturer's instructions;

- damage caused by a commercial, professional or collective use of the article (the warranty validity will be reduced to six (6) months when the article is used professionally);

- damage resulting from an inappropriate packing and shipping of the article;

- all damage caused by modification, repair or alteration performed by a third party without written permission by Velleman®.

- Articles to be repaired must be delivered to your Velleman® dealer, solidly packed (preferably in the original packaging), and be completed with the original receipt of purchase and a clear flaw description.

- Hint: In order to save on cost and time, please reread the manual and check if the flaw is caused by obvious causes prior to presenting the article for repair. Note that returning a non-defective article can also involve handling costs.

- Repairs occurring after warranty expiration are subject to shipping costs.

- The above conditions are without prejudice to all commercial warranties.

The above enumeration is subject to modification according to the article (see article's manual).

NL