Operating instructions

ManualsBrandsVelleman ManualsMultimeterDVM850BL

DVM850BL GB

To all residents of the European Union

Important 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 specialised

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.

1. SAFETY

1.1. SAFETY INFORMATION

This multimeter has been designed in accordance with IEC-1010. This norm pertains to

electronic measuring instruments that emit pollution 2 and belong to an overvoltage category

(CAT II).

Follow all safety and operating instructions to ensure that the meter is used safely and is kept

in good running order.

Full compliance with safety standards can only be guaranteed when the buyer uses the test

leads supplied with this packaging. If necessary, they should be replaced with identical leads.

1.2. SAFETY SYMBOLS

Important safety information, refer to the user manual.

Dangerous voltage is possible.

Earthing.

Double insulation (class II-protection)

Replace a blown fuse by a fuse with the same ratings as specified in this

manual.

Summary of content (8 pages)

PAGE 1
To all residents of the European Union Important 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 specialised company for recycling. This device should be returned to your distributor or to a local recycling service. Respect the local environmental rules.
PAGE 2
. MAINTENANCE • Before opening the case, always disconnect the test leads from all live circuits. • Avoiding fire risks : respect the specified voltage and current ratings when replacing the fuse. F 200mA / 250V (Quick acting) • Do not use the device unless the back cover is in place and securely fastened. • Do not apply abrasives or solvents to the meter. Use a damp cloth and mild detergent for cleaning purposes. 3. DURING USE • Never exceed the limit value for protection.
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4.1.
PAGE 4
.2. FRONT PANEL DESCRIPTION Display 3 ½ digits, 7 segments, LCD : 15mm high Back light When this button is pushed, the back light will illuminate your display for approximately 5 seconds. Rotary switch This switch is used to select functions and desired ranges as well as to turn the meter on/off. Hold button Upon pushing this button, the display will retain the last reading and the " "-symbol will remain on the LCD until the button is pushed again.
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.1. DC VOLTAGE Range Resolution Accuracy 200mV 100µV ±0.5% of rdg ± 2 digits 2V 1mV ±0.5% of rdg ± 2 digits 20V 10mV ±0.5% of rdg ± 2 digits 200V 100mV ±0.5% of rdg ± 2 digits 600V 1V ±0.8% of rdg ± 2 digits Overload protection : 250Vrms for the 200mV range and 600Vdc or rms ac for other ranges. 5.2. DC CURRENT Range Resolution Accuracy 200ùA 0.1µA ±1% of rdg ± 2 digits 2mA 1µA ±1% of rdg ± 2 digits 20mA 10µA ±1% of rdg ± 2 digits 200mA 100µA ±1.
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5.5. RESISTANCE Range Resolution 200Ω 0.1Ω 2kΩ 1Ω 20kΩ 10Ω 200kΩ 100Ω 2MΩ 1kΩ Maximum open circuit voltage : 3.2V Overload protection : 250Vdc or rms ac for all ranges. Accuracy ±0.8% of rdg ± 2 digits ±0.8% of rdg ± 2 digits ±0.8% of rdg ± 2 digits ±0.8% of rdg ± 2 digits ±1.0% of rdg ± 2 digits 5.6. TRANSISTOR hFE TEST (0-1000) Range NPN & PNP Tested range 0-1000 Tested current Ib = 10µA Tested voltage Vcd = 3V 6. OPERATING INSTRUCTIONS 6.1. DC VOLTAGE MEASUREMENT 1.
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6.3. AC VOLTAGE MEASUREMENT 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. 6.4. RESISTANCE 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 "Ω" range position. 3.
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6.7. AUDIBLE CONTINUITY TEST 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 builtin buzzer will sound. 7. BATTERY & FUSE REPLACEMENT When" " is displayed, the battery should be replaced. Fuses rarely need replacement and blown fuses almost always result from human error.