DVM852 - Multimeter VELLEMAN - Free user manual and instructions

Product Type	Digital Multimeter
Brand	Velleman
Model	DVM852
Display	LCD 3 ½ digits, 1999 count
Power Supply	9V alkaline battery 6LR61
Dimensions	138 x 69 x 31 mm
Weight	Approx. 142 g
Maximum Measurable Voltage	600 V (DC/AC)
Maximum DC Current	10 A
Maximum Resistance	2 MΩ
Installation Category	CAT II 600 V
Pollution Degree	2
Overload Protection	Fuses F500 mA/600 V and F10 A/600 V (5 x 20 mm)
Measurement Functions	DC/AC voltage, DC current, resistance, diode test, audible continuity, hFE transistor test
Special Features	Hold, backlight
Included Accessories	Protective holster, test leads, 9V battery, transistor adapter
Maintenance	Clean with a damp cloth and mild detergent. Avoid abrasive products.
Safety	Disconnect leads before opening. Do not use in CAT III/IV. Respect maximum voltages.
Available Spare Parts	9V battery, fuses F500 mA/600 V and F10 A/600 V
Warranty	24 months for manufacturing defects (Velleman general conditions)

Frequently Asked Questions - DVM852 VELLEMAN

How to measure DC voltage with the DVM852?

Connect the red lead to the VΩmA jack and the black lead to COM. Set the selector to the appropriate DCV range. Connect the test probes to the source. Read the value and polarity on the display.

Which fuse to use to replace a blown fuse?

Use a fuse type F500 mA/600 V for the mA circuit protection and F10 A/600 V for the 10 A circuit protection. Both are 5 x 20 mm format.

How to test a diode with this multimeter?

Set the selector to diode mode (diode symbol). Connect the red lead to VΩmA and the black lead to COM. Connect the red probe to the anode and the black probe to the cathode of the diode. The threshold voltage is displayed. Reversal shows '1'.

What does the low battery symbol on the display mean?

The low battery symbol indicates that the 9V battery is weak. Replace it with an alkaline 6LR61 battery to ensure accurate measurements.

Can AC current be measured with the DVM852?

Yes, the DVM852 measures alternating current (AC) but only in AC voltage (ACV). For AC current, there is no dedicated function; only AC voltages are measurable.

How to use the Hold function?

Press the 'Hold' button to freeze the last measured value. The 'H' symbol appears. Press again to release the function.

What is the continuity test procedure?

Set the selector to the continuity position (sound wave symbol). Connect the leads to VΩmA and COM. Touch the two points of the circuit. If the resistance is below 60Ω, the buzzer sounds.

How to replace the battery?

Turn off the device, remove the holster, and loosen the two screws on the back. Open the case. Replace the used 9V battery with a new one, respecting polarity. Close the case.

The multimeter displays '1' constantly, what to do?

A '1' display indicates an over-range or reversed connection. Check the selected range and the connections. For diodes, it may mean reversed polarity.

What are the accessories included with the DVM852?

The multimeter is supplied with a protective holster, a set of test leads, a 9V battery, and a transistor test adapter.

USER MANUAL DVM852 VELLEMAN

To all residents of the European Union

Important environmental information about this product

Symbol of a trash bin crossed with no text or labels, accompanied by a black rectangular block at the bottom (no text or symbols present)

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.

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.

2. Used Symbols

	AC (Alternating Current)
	DC (Direct Current)
	Both AC and DC
	Risk of Electric shock. A potentially hazardous voltage is possible.
	Caution: risk of danger, refer to the user manual for safety information.Warning: a hazardous condition or action that may result in injury or deathCaution: condition or action that may result in damage to the meter or equipment under test
	Double insulation (class 2-protection)
	Earth
	Fuse
	Capacitor
	Diode

DVM851

Continuity

3. General Guidelines

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

This symbol indicates: Read instructions

Not reading the instructions and manual can lead to damage, injury or death.

This symbol indicates: Danger

A hazardous condition or action that may result in injury or death

This symbol indicates: Risk of danger/damage

Risk of a hazardous condition or action that may result in damage, injury or death

This symbol indicates: Attention; important information

Ignoring this information can lead to hazardous situations.

WARNING: To avoid electrical shock always disconnect the test leads prior to opening the housing. To prevent fire hazards, only use fuses with the same ratings as specified in this manual.

Remark: refer to the warning on the battery compartment

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.

Protect this device from shocks and abuse. Avoid brute force when operating.

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 §8 Pollution degree.

DVM851

Keep the device away from children and unauthorised users.

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

There are no user-serviceable parts inside the device. Refer to an authorized dealer for service and/or spare parts.

This is an installation category CAT 2 measuring instrument. Never use this equipment in a CAT 3 or CAT 4 environment. Refer to §7 Overvoltage/installation category.

Read this addendum and the manual thoroughly. Familiarise yourself with the functions of the device before actually using it.

All modifications of the device are forbidden for safety reasons. Damage caused by user modifications to the device is not covered by the warranty.

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.

4. Maintenance

There are no user-serviceable parts inside the device. Refer to an authorized dealer for service and/or spare parts.

• Before performing any maintenance activities, disconnect the test leads from the jacks.
• For instructions on replacing battery or fuse, refer to §11 Battery and fuse replacement.
• Do not apply abrasives or solvents to the meter. Use a damp cloth and mild detergent for cleaning purposes.

5. During Use

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

DVM851

• 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.
• Never use the meter with CAT 2 installations when measuring voltages that might exceed the safety margin of 600V above earth ground.
• Set the range selector at its highest position if the intensity of the charge to be measured is unknown beforehand.
• 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 the meter may be damaged by any high amplitude voltage pulses at test points.
• Always be careful when working with voltages above 60Vdc or 30Vac rms. Keep your fingers behind the probe barriers at all times during measurement.
• Never perform resistance, diode or continuity measurements on live circuits. Make sure all capacitors in the circuit are depleted.

6. General Description

The DVM851 is a battery-operated, hand-held 3 12 digital multi-meter for measuring DC and AC voltages, DC current and resistance. It also offers the possibility of executing continuity tests and of testing diodes and transistors. The back light is optional.

Refer to the illustration on page 2 of this manual:

① Display
3 12 digits, 7 segments, LCD: 15mm high
② Back light
When this button is pushed, the backlight will illuminate your display for approximately 5 seconds.
③ Rotary switch
This switch is used to select functions and desired ranges as well as to turn the meter on/off.
④ Hold button
Upon pushing this button, the display will retain the last reading and the "H" symbol will remain on the LCD until the button is pushed again.

DVM851

⑤ "10A" jack
Insert the red test lead in this connector in order to measure a max. current of 10A.
⑥ "COM" jack
Insert the black (negative) test lead.
⑦ "VΩmA" jack
Insert the red (positive) test lead in this connector to measure voltage, resistance and current (except 10A).

7. 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 1	A CAT 1-rated meter is suitable for measurements on protected electronic circuits that are not directly connected to mains power, e.g. electronics circuits, control signals...
CAT 2	A CAT 2-rated meter is suitable for measurements in CAT 1-environments and mono-phase appliances that 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 3- or 20m apart from a CAT 4-environment. E.g. household appliances, portable tools...
CAT 3	A CAT 3-rated meter is suitable for measurements in CAT 1-and CAT 2-environments, as well as for measurements on (fixed) mono- or poly-phased appliances which are at least 10m apart from of a CAT 4-environment, and for measurements in or on distribution level equipment (fuse boxes, lighting circuits, electric ovens).
CAT 4	A CAT 4-rated meter is suitable for measuring in CAT 1-, CAT 2-and CAT 3-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 4 meter must be used.

Warning:

This device was designed in accordance with EN 61010-1 installation category CAT 2 600V. This implies that certain restrictions in use apply

DVM851

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 CAT 2

8. 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.

9. Specifications

This device is not calibrated when purchased!

Regulations concerning environment of use:

• Use this meter only for measurements in CAT 1 and CAT 2 environments (see §7)
• Use this meter only in a pollution degree 2 environment (see §8) Ideal working conditions include:

• temperature: 18 to 28°C (64°F to 82°F)
• relative humidity: max. 80%
• altitude: max. 2000m (6560ft)

Voltage

Fuse protection

Power

Display

sampling rate

Measuring method

Overrange indication

Polarity indication

Operating temperature

Storage temperature

Low battery indication

Dimensions

Weight

max. 600V

F 500mA/600V, F10A/600V

9V alkaline battery 6LR61

LCD, 1999 counts

2-3/sec.

Dual-slope integration A/D converter

Only figure "1" on the display

"- " displayed for negative polarity

0 to 40°C

-10°C to 50°C

appears on the display

138 x 69 x 31mm

Approx. 142g

9.1 DC VOLTAGE

Do not measure circuits that may contain voltages > 600V

Range	Resolution	Accuracy
200mV	100μV	±0.5% of rdg ± 2 digits
2V	1mV	±0.8% of rdg ± 2 digits
20V	10mV
200V	100mV
600V	1V	±1.0% of rdg ± 2 digits

9.2 DC CURRENT

Range	Resolution	Accuracy
200μA	0.1μA	±1% of rdg ± 2 digits
2mA	1μA
20mA	10μA
200mA	100μA	±1.5% of rdg ± 2 digits
10A	10mA	±3% of rdg ± 2 digits

Overload protection by fuse: 200mA range F 500mA/600V, 10A range F10A/600V.

9.3 AC VOLTAGE

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

Frequency range: 40Hz to 400Hz.

9.4 DIODE & CONTINUITY

Range	Description
	If continuity exists (less than 60Ω), built-in buzzer will sound
	Displays the diode's approx. forward voltage drop

9.5 RESISTANCE

Range	Resolution	Accuracy
200Ω	0.1Ω	±0.8% of rdg ± 2 digits
2kΩ	1Ω
20kΩ	10Ω
200kΩ	100Ω
2MΩ	1kΩ	±1.0% of rdg ± 2 digits

Maximum open circuit voltage: 3.2V

V. 03 - 23/10/2015 10 ©Velleman nv

9.6 TRANSISTOR hFE TEST (0-1000)

	Do not conduct transistor measurements on live circuits. For transistor test use the included adaptor socket.
Range	Tested range	Tested current	Tested voltage
NPN & PNP	0-1000	Ib = 10μA	Vcd = 3V

10. Voltage Measurement

10.1 DC VOLTAGE MEASUREMENT

Do not measure circuits that may contain voltages > 600V

Use extreme caution when measuring voltages higher than 60Vdc or 30Vac rms.

Always place your fingers behind the protective edges of the test probes while measuring!

1. Connect the red test lead to the "VΩmA" jack and the black lead to the "COM" jack.
2. Set the rotary switch in the desired DCV position. If the voltage to be measured is unknown beforehand, you should set the range switch in the highest range position and then reduce gradually until the ideal resolution is obtained.
3. Connect the test leads to the source being measured.
4. Read the voltage value on the LCD display along with the polarity of the red lead connection.

10.2 DC CURRENT MEASUREMENT

Do not measure current in circuits with voltages > 600V

Use extreme caution when measuring voltages higher than 60Vdc or 30Vac rms.

Always place your fingers behind the protective edges of the test probes while measuring!

1. Connect the red test lead to the "VΩmA" jack and the black test lead to the "COM" jack (switch the red lead to the "10A" jack for measurements between 200mA and 10A).
2. Set the rotary switch (DCA) in the desired position.
3. Open the circuit in which the current is to be measured and connect the test leads to the circuit IN SERIES.

DVM851

1. Read the current value and the polarity of the red lead connection on the LCD display

10.3 AC VOLTAGE MEASUREMENT

	Do not measure circuits that may contain voltages > 600V
	Use extreme caution when measuring voltages higher than 60Vdc or 30Vac rms.Always place your fingers behind the protective edges of the test probes while measuring!

1. Connect the red test lead to the "VΩmA" jack and the black test lead to the "COM" jack.
2. Set the rotary switch in the appropriate ACV position.
3. Connect the test leads to the source to be measured.
4. Read the voltage value on the LCD display.

10.4 RESISTANCE

Do not conduct resistance measurements on live circuits. Make sure all capacitors in the circuit are depleted.

1. Connect the red test lead to the "VΩmA" jack and the black test lead to the "COM" jack (the red lead has a positive polarity "+").
2. Set the rotary switch in the appropriate " " range position.
3. Connect the test leads to the resistor to be measured and read the LCD display.
4. If the resistance being measured is connected to a circuit, turn off the power and discharge all capacitors before applying the test probes.

10.5 DIODE TEST

Do not conduct diode- or continuity measurements on live circuits. Make sure all capacitors in the circuit are depleted.

1. Connect the red test lead to "VΩmA" jack and the black one to the "COM" jack (the red lead has a positive polarity "+".).
2. Set the rotary switch in the " " position.
3. Connect the red test lead to the anode of the diode to be tested and the black test lead to the cathode of the diode. The approx. forward voltage drop of the diode will be displayed. If the connection is reversed, the display will merely show a "1".

10.6 TRANSISTOR TEST

Do not conduct transistor measurements on live circuits. For transistor test 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. Set the rotary switch in the "hFE" position.
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 10 A , Vce 3V.

10.7 AUDIBLE CONTINUITY TEST

Do not conduct diode- or continuity measurements on live circuits. Make sure all capacitors in the circuit are depleted.

1. Connect the red test lead to "VΩmA" and the black one to "COM".
2. Set the range switch in the " "position.
3. Connect the test leads to two points of the circuit to be tested. If continuity exists, the built-in buzzer will sound.

11. Battery and Fuse Replacement

WARNING: To avoid electrical shock always disconnect the test leads prior to opening the housing. To prevent fire hazards, only use fuses with the same ratings as specified in this manual.

Remark: refer to the warning on the battery compartment

There are no user-serviceable parts inside the device. Refer to an authorized dealer for service and/or spare parts.

Disconnect the test leads from the test points and remove the test leads from the measuring terminals before replacing the batteries or fuses.

• When" - + " is displayed, the battery should be replaced.
• Fuses rarely need replacement and blown fuses almost always result from human error.

DVM851

To replace the battery or fuse:

• Switch of the meter
• Remove the protective edge, release the two screws located at the backside of the meter and gently open the housing.
• Remove the old battery and insert a new one.

Battery: 9V 6LR61 alkaline, do not use rechargeable batteries and make sure to respect the polarity

Fuses: F500mA 600V and F10A 600V 5x20mm

Make sure the meter is closed tight and put the protective edge back in place before using the meter.

12. Troubleshooting

If the device beeps continuously while measuring continuity, this means that the 600V-500mA internal fuse is defective. Replace this fuse.

Keep in mind that a low battery level could lead to incorrect measurements. Replace the 9V battery on a regular basis.

(tip: the reduced luminosity of the backlight/LCD display indicates a low battery level)

13. Accessories

• Meter with protective holder (edge)
• User manual
• Set of test leads
• 9V battery
• Transistor socket

Use this device with original accessories only. Velleman nv cannot be held responsible in the event of damage or injury resulting from (incorrect) use of this device. For more info concerning this product and the latest version of this manual, please visit our website www.velleman.eu. The information in this manual is subject to change without prior notice.

© COPYRIGHT NOTICE

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.

GEBRUIKERSHANDLEIDING

1. Inleiding

Dual-slope integration A/D convertor

10.7 TEST AUDIBLE DE CONTINUITE

10.3 MEDIR TENSIONES CA

© INFORMACJA O PRAWACH WŁASNOŚCI

Velleman® Service and Quality Warranty

Since its foundation in 1972, Velleman® acquired extensive experience in the electronics world and currently distributes its products in over 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;
• consumable goods, parts or accessories that are subject to an aging process during normal use, such as batteries (rechargeable, non-rechargeable, built-in or replaceable), 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