Velleman DVM345DI multimeter
Contents
1. 6 ACCESSORIES User manual Set of test leads 9V battery NEDA1604 or 6F22 K type thermocouple Holster RS232C cable 1 disk of 1 44MB DVM345DI 7 GB2. amp vellemen DVM345DI components 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 Respect the following safety instructions to ensure maximum personal safety and to keep the device itself in good working order e Protect yourself against electroshocks e Do not use this device for any other application than those described in this manual e Full compliance with safety standards can only be guaranteed if the device is used with the supplied test leads If necessary they should be replaced with identical leads or leads with identical electric ratings All test leads should be in good working order 2 1 Use e Never exceed the specified limit values for the various measurement ranges e Do not touch unused terminals when the meter is connected to a circuit e Place the range selector switch in the highest posi
3. leads to the resistance you wish to measure NOTE The device may need a few seconds to produce a stable reading when measuring resistances in excess of 1MQ This is entirely normal The message OL and the full bar graph will be displayed if the input is not connected e g with an open circuit Disconnect the circuit to be tested and make sure that all capacitors have been fully discharged before measuring the in circuit resistance 4 4 Capacitance Measurements 1 Place the function switch in the nF position 2 Make sure that the capacitor has been fully discharged prior to connecting the capacitor to the capacitance socket A WARNING Disconnect all test leads from the circuit to be tested before inserting the capacitor in the capacitance socket Make sure that no components are connected to this socket when performing voltage measurements with test leads 4 5 Temperature Measurements 1 Place the function switch in the TEMP position 2 Connect the K type thermocouple with the temperature socket on the front panel and contact the object in question with the thermocouple A WARNING Remove the thermocouple before selecting a different function in order to avoid electroshocks Do not connect the thermocouple to the TEMP socket unless all test leads have been disconnected from the circuits you wish to test 4 6 Audible Continuity Test 1 Connect the black test lead to the COM jack and the red tes
4. AC voltages both auto ranging DC amp AC current temperature resistance auto ranging and capacitance The user can also test diodes transistors and audible continuity 3 1 ON OFF push button Used to turn the device ON or OFF The beeper sounds when this button is pushed 3 2 DC AC or Oil button Used to select DC or AC voltage range DC or AC current range Q or A range The beeper sounds when this button is pushed 3 3 R H button Press this button to switch to manual operation when the device is in the auto ranging mode R H will be displayed Hold the button for more than one second to return to the auto ranging mode Push this button to change the voltage ranges as follows 4V 40V gt 400V 1000V Push this button to change the resistance ranges as follows 40MQ 4MQ 400kQ 40kQ 4kQ gt 4000 3 4 B L button Press this button to turn the back light ON or OFF 3 5 Input Jacks This meter has 4 input jacks with overload protection Connect the black test lead to the COM jack and the red test lead to the following input jacks VDC VAC VIQ 1000VDC or 750Vrms AC Q V Q 250VDC or 250Vrms AC E VI 250VDC or 250Vrms AC mA mA 400mA DC or rms AC 10A 10A 10A DC or rms AC DVM345DI 2 GB 3 6 Description of the Front Panel D ER W 4 4 1 1 2 3 4 Display N ON OFF push button 40 Transistor socket F
5. Resistance Range Resolution Accuracy 4000 0 10 4kQ 10 40kO 100 1 2 of rdg 3 digits 400kQ 0 1kO 4MQ 1kO 40MQ 10kO 3 0 of rdg 5 digits Max open circuit voltage 3 0V Overload protection 5 5 DC Current 250VDC or 250Vrms AC for all ranges Range Resolution Accuracy 4mA 1uA 1 2 of rdg 3 digits 400mA 0 1mA 1 2 of rdg 3 digits 10A 10mA 2 0 of rdg 8 digits Overload protection 15A 250V fuse for the 10A range 5 6 AC Current Range Resolution Accuracy 4mA 1uA 1 5 of rdg 8 digits 400mA 0 1mA 1 5 of rdg 8 digits 10A 10mA 3 0 of rdg 8 digits Overload protection 15A 250V fuse for the 10A range DVM345DI GB Frequency range 40 to 400Hz Response average response calibration in rms of a sine wave 5 7 Capacitance Range Resolution Accuracy 4nF 1pF 4 0 of rdg 5 digits 400nF 0 1nF 4 0 of rdg 5 digits 5 8 Temperature Range Resolution Accuracy Oto 400 C 1 C 3 0 of rdg 3 digits 401to 750 1 C 3 0 of rdg 5 digits 5 9 Audible Continuity Function Description Built in buzzer sounds if continuity exists lt 30Q 5 10 Diode Function Resolution Test Current Open Circuit Voltage gt 1mV 25uA 3 0V 5 11 Transistor Function Range Base Current Vce hFE 1 to 1000 10A 3 0V
6. o activate the meter and turn on the computer A WARNING 1 Only use a RS232C serial interface cable Do not attempt to modify the length of this cable 2 Please read the information on the supplied disk 5 SPECIFICATIONS Max accuracy is achieved during a one year period after calibration Ideal circumstances require a temperature of 18 to 28 C 64 to 82 F and a max relative humidity of 75 5 1 General Specifications Max Voltage between Terminals and Earth Ground 1000VDC or 750 Vrms AC sine wave Power Supply 9V battery NEDA1604 or 6F22 Ranging Method Auto Manual Display 3 digit LCD 38 segment bar graph Overrange Indication OL appears on display Polarity Indication is displayed automatically Battery Low Indication The symbol is displayed Operating Temperature 5 to 35 C 41 to 95 F DVM345DI 5 GB Storage Temperature Dimensions Weight 5 2 DC Voltage 10 to 60 C 14 to 140 F 78 x 186 x 35mm 300g including battery Range Resolution Accuracy 4V 1mV 40V 10mV 0 5 of rdg 3 digits 400V 0 1V 1000V 1V 0 8 of rdg 3 digits Input impedance 10MQ 5 3 AC Voltage Range Resolution Accuracy AN 1mV 40V 10mV 1 2 of rdg 5 digits 400V 0 1V 750V 1V 1 5 of rdg 5 digits Input impedance 10MQ Response average response calibration in rms of a sine wave Frequency range 40Hz 400Hz 5 4
7. t lead to the V Q jack The polarity of the red test lead is positive 2 Place the function switch in the position and push the Q button on the front panel 3 Connect the test leads with two points of the circuit you wish to test The built in buzzer will sound if continuity exists for resistances lt 30Q DVM345DI 4 GB 4 7 Diode Test 1 Connect the black test lead to the COM jack and the red test lead to the V Q jack The polarity of the red test lead is positive 2 Place the function switch in the cho 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 Determine whether the transistor is NPN or PNP and locate the emitter base and collector leads Insert the leads into the proper holes of the hFE socket on the front panel 3 The display will show the approximate hFE value at the moment of testing Base current 10uA Vce 3 0V A WARNING Disconnect all test leads from the circuit to be tested before connecting the transistor with the hFE socket Make sure that no components are connected to the hFE socket when performing voltage measurements with test leads 4 9 Interfacing the Meter with a PC 1 Run the RS232C cable from the computer s serial ports to the meter 2 Press ON OFF t
8. tion if the value to be measured is unknown beforehand e Disconnect all test leads from the circuit to be tested prior to selecting a different function e When performing measurements on TV s or switching power circuits the user should keep in mind that voltage surges may occur at test points These surges may damage the meter e Never perform resistance measurements on live circuits e Exercise extreme caution when working with voltages in excess of 60VDC or 30Vrms AC Keep your fingers behind the probe barriers while using the device 2 2 Symbols Important information with reference to safety consult the manual Dangerous voltage may be present Earth ground Double insulation Protection class II ah gt e DVM345DI 1 GB Function Red Lead Connection Input Limit 2 3 Maintenance e Always disconnect the test leads from all current sources before opening the meter e Replace blown fuses with an identical one or a fuse with identical voltage and current ratings 15A 250V e Do not use the device and have it checked by qualified personnel if anomalies are observed or in case of malfunction e Use adamp cloth and a mild detergent to clean the device Never apply abrasives or solvents to the meter 3 DESCRIPTION This device is a professional auto ranging measuring instrument All measured values are displayed on a 3 digit LCD The device is equipped with a 38 segment bar graph and can be used to measure DC amp
9. unction switch Capacitance or temperature socket pE lt Input jacks RS232C socket 4 B L button 5 6 R H button DC AC or Q button OPERATION Voltage Measurements Connect the black test lead to the COM jack and the red test lead to the V O jack Place the function switch in the V position and connect the test leads to the source you wish to measure Select the VDC or VAC mode with the DC AC button push R H for manual range selection The measured value will be displayed on the LCD The polarity of the red test lead is indicated with DC measurements 4 2 Current Measurements 1 DV Connect the black test lead to the COM jack and the red test lead to the mA jack for measurements up to 400mA Switch the red test lead to the 10A jack for measurements up to 10A Place the function switch in the 4mA 400mA or 10A position and use the DC AC button to select either the DCA or the ACA mode Connect the test leads in series with the load in which the current is to be measured The measured value will be displayed on the LCD The polarity of the red test lead is indicated with DC measurements M345DI 3 GB 4 3 Resistance Measurements 1 Connect the black test lead to the COM jack and the red test lead to the V Q jack The polarity of the red test lead is positive 2 Place the function switch in the Q range to be used and connect the test
Download Pdf Manuals
Related Search