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Summary of Contents for Velleman DVM 890L
- Page 1 DVM 890L LCD Standard Digital Multimeter LCD Standaard Digitale Multimeter Multimètre Digital LCD Standard USER MANUAL GEBRUIKERSHANDLEIDING MANUEL D’UTILISATION...
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Page 2: A Word About Safety
DVM 890L LCD Standard Digital Multimeter 1. Introduction This instrument is a compact, rugged, battery-operated hand-held 3 1/2 digit digital multimeter for measuring DC and AC voltages, DC and AC current and resistance. It also offers the possibility of executing continuity tests and of testing diodes and transistors. You can also measure capacitance and temperatures. -
Page 3: Front Panel Description
2. Front Panel description 1) Display 2) Power On/Off button 3) Transistor test socket 4) RANGE and FUNCTION switch 5) Capacity input sockets 6) Input connection temperature probe 7) mA-input connector 8) V/Ω-input connector 9) 20A MAX input connector 10) COM-input connector €... -
Page 4: Function And Range Selector
2.1 Function and range selector Various functions and 32 ranges are provided. A rotary switch is used to select functions as well as ranges. 2.2 Power switch A push-button is used to turn the meter on or off. To extend battery life, an Auto Power-Off function is provided. The meter will be turned off automatically within approx. -
Page 5: Dc Voltage Measurement
3. Operating instructions 1) Check the 9V battery by setting the ON-OFF switch to the ON position. If the battery is weak, a " " sign will appear on the display. If this sign does not appear on the display, proceed as mentioned below. Read MAINTENANCE if the battery has to be replaced. -
Page 6: Dc Current Measurement
3.3 DC Current measurement 1) Connect the black test lead (-) to the COM input connector and the red test lead (+) to the mA input connector or a maximum of 200mA. Move the red test lead to the 20A MAX input connector for a maximum of 20A. -
Page 7: Capacitance Measurements
Note : 1) The overrange indication ("1") will be displayed if the resistance value being measured exceeds the maximum value of the selected range. Consequently, you should select a higher range. It may take the meter a few seconds to become stable when measuring a resistance of approximately 1 MΩ... -
Page 8: Transistor Hfe Test
3.7 Diode measurement and Continuity test 1) Connect the black lead (-) to the COM input connector and the red lead (+) to the V/Ω/f input connector. 2) Set the FUNCTION switch to the range and connect the test leads to the diode under measurement. -
Page 9: Specifications
4. Specifications Maximum accuracy is achieved during a one-year period after calibration. Ideal circumstances require a temperature of 23°C (± 5°C) and a relative humidity under 75%. 4.1 General Maximum display 1999 counts (3 1/2 digits) with automatic polarity indication and eng. unit. Indication method LCD display Measuring method... - Page 10 4.3 AC Voltage Range Resolution Accuracy ± 1.2% of rdg ± 3 digits 200mV 100µV ± 0.8% of rdg ± 3 digits 10mV 200V 100mV ± 1.2% of rdg ± 3 digits 700V Input impedance : 10MΩ for all ranges Frequency range : 40 to 400Hz Overload protection : 750Vrms or 1000V peak continuous for the ac ranges, with the exception of the 200mV AC range (max.15 seconds above 300Vrms)
- Page 11 4.6 Resistance Range Resolution Accuracy ± 0.8% of rdg ± 3 digits 200Ω 0.1Ω 2kΩ 1Ω ± 0.8% of rdg ± 1 digits 20kΩ 10Ω 200kΩ 100Ω 2MΩ 1kΩ ± 1% of rdg ± 2 digits 20MΩ 10kΩ ± 5% of rdg ± 10 digits 200MΩ...
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Page 12: Maintenance
4.10 Diode Test and Audible Continuity Test Range Description Test Condition Display shows approx. Forward DC current approx. 1mA forward voltage of Reversed DC voltage approx. 2.8 Volts diode Built-in buzzer sounds Open circuit voltage approx. 2.8 Volts if conductance is less than approx.
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