DVM345DI DIGITAL MULTIMETER DIGITALE MULTIMETER MULTIMETRE NUMERIQUE DIGITALES MULTIMETER User Manual Gebruikershandleiding Manuel d’utilisation Gebrauchsanleitung
DVM345DI -- DIGITAL MULTIMETER 1. INTRODUCTION Thank you for buying the DVM345DI. This device enables the user to measure AC and DC voltages, AC and DC currents, resistance, capacitance and temperature. The device can be interfaced with a computer and the user can also test diodes, transistors and audible continuity. 2. SAFETY The meter has been designed according to IEC-1010 concerning the safety requirements for electronic measuring instruments with an overvoltage category (CAT II) and pollution 2.
2.3. Maintenance • Always disconnect the test leads from all current sources before opening the meter. • Replace blown fuses with an identical one or a fuse with identical voltage and current ratings (15A/250V). • Do not use the device and have it checked by qualified personnel if anomalies are observed or in case of malfunction. • Use a damp cloth and a mild detergent to clean the device. Never apply abrasives or solvents to the meter. 3.
3.6. Description of the Front Panel Display "ON/OFF" push button Transistor socket Function switch Capacitance or temperature socket Input jacks RS232C socket "B/L"-button "R-H" button DC/AC- or -button 4. OPERATION 4.1. Voltage Measurements 1. Connect the black test lead to the "COM"-MDFN DQG WKH UHG WHVW OHDG WR WKH 9 -jack. 2. Place the function switch in the -position and connect the test leads to the source you wish to measure. 3.
4.3. Resistance Measurements 1. Connect the black test lead to the "COM"-jack and the red test lead to the "V/ -jack. The polarity of the red test lead is positive (+). 2. 3ODFH WKH IXQFWLRQ VZLWFK LQ WKH -range to be used and connect the test leads to the resistance you wish to measure.
4.7. Diode Test 1. Connect the black test lead to the "COM"-MDFN DQG WKH UHG WHVW OHDG WR WKH 9 -jack. The polarity of the red test lead is positive (+). 2. Place the function switch in the " "-position. 3. Connect the red test lead to the anode and the black test lead to the cathode of the diode to be tested. 4. The forward voltage drop of the diode will be displayed on the LCD. 4.8. Transistor Test 1. Place the function switch in the "hFE"-position. 2.
Storage Temperature Dimensions Weight : -10 to 60°C (14 to 140°F) : 78 x 186 x 35mm : 300g (including battery) 5.2. DC Voltage Range Resolution 4V 1mV 40V 10mV 400V 0.1V 1000V 1V Input impedance : 10MΩ. Accuracy ±0.5% of rdg ± 3 digits ±0.8% of rdg ± 3 digits 5.3. AC Voltage Range Resolution Accuracy 4V 1mV ±1.2% of rdg ± 5 digits 40V 10mV 400V 0.1V 750V 1V ±1.5% of rdg ± 5 digits Input impedance : 10MΩ Response : average response, calibration in rms of a sine wave. Frequency range : 40Hz – 400Hz. 5.4.
Frequency range Response : 40 to 400Hz : average response, calibration in rms of a sine wave. 5.7. Capacitance Range 4nF 400nF Resolution 1pF 0.1nF Accuracy ±4.0% of rdg ± 5 digits ±4.0% of rdg ± 5 digits Resolution 1°C 1°C Accuracy ±3.0% of rdg ± 3 digits ±3.0% of rdg ± 5 digits 5.8. Temperature Range 0 to 400°C 401 to 750°C 5.9. Audible Continuity Function Description Built-in buzzer sounds if continuity exists (< 30Ω) 5.10.
