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Conrad VC940, Руководство по эксплуатации

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Model VC940: OPERATING MANUAL

3

List of Figures

Figure

Title

Page

2-1

Meter Structure

2-2

Display Features

3-1

Voltages Measurement

3-2

Currents Measurement

3-3

Resistance Measurement

3-4

Continuity Test

3-5

Diode Test

3-6

Capacitance Measurement

3-7

Frequency / Duty Cycle Measurement

3-8

Temperature Measurement

3-9

Power Measurement

6-1

Fuse Replacement

6-2

Battery Replacement

Содержание VC940

Страница 1: ...esting Diodes F Measuring Capacitance G Measuring Frequency Duty Cycle H Measuring Temperature I 4 20mA loop current as readout J Power Measurement 4 Using Stores Recall and Send Features Introduction Storing and Clearing Readings Recalling Stored Readings Using Send Sleep Mode 5 Changing the Default Setting Introduction Selecting Setup Options Saving Setup Options 6 Maintenance A General Service ...

Страница 2: ... MANUAL 2 List of Tables Table Title Page 1 1 Unpacking Inspection 1 2 International Electrical Symbols 2 1 Rotary Switch Selections 2 2 Functional Buttons 2 3 Functions Vs Displays 2 4 Display Features 5 1 Setup Selections ...

Страница 3: ... Display Features 3 1 Voltages Measurement 3 2 Currents Measurement 3 3 Resistance Measurement 3 4 Continuity Test 3 5 Diode Test 3 6 Capacitance Measurement 3 7 Frequency Duty Cycle Measurement 3 8 Temperature Measurement 3 9 Power Measurement 6 1 Fuse Replacement 6 2 Battery Replacement ...

Страница 4: ...o avoid possible damage to the Meter or to the equipment under test adhere to the following rules z Before using the Meter inspect the case Do not use the Meter if it is damaged or the case or part of the case is removed Look for cracks or missing plastic Pay attention to the insulation around the connectors z Inspect the test leads for damaged insulation or exposed metal Check the test leads for ...

Страница 5: ...940 OPERATING MANUAL 5 Table 1 2 International Electrical Symbols AC or DC Grounding Double Insulated Warning Refer to the Operating Manual Deficiency of Built In Battery Conforms to Standards of European Union ...

Страница 6: ...r of the display notifies you that the batteries are low and should be replaced Warning To avoid false readings which could lead to possible electric shock or personal injury replace the battery as soon as the battery icon appears The Meter Structure The Figure 2 1 shows the Meter structure 1 LCD Display 2 Functional Buttons 3 Rotary Switch 4 Input Terminals 1 2 3 4 Figure 2 1 Meter Structure Rota...

Страница 7: ... HOLD Press EXIT to exit Press and hold the button for over 1 second z In Setup each press to select the digit you want to edit z In Recall press to enable SEND feature z In Store press to toggle between clearing all the stored reading or start storing reading from the current index number Press the button once after entering Setup or Recall or Store mode Press to exit certain button functions Pre...

Страница 8: ...e The tested frequency value 45kHz 10kHz Full range 4 40 400 750 w The tested power value Apparent power value Power factor value STO The current measurement reading The value of the corresponding index number Index number increase one Index number no 01 no 10 RCL The recalled value The total number of stored value Index number no 01 no 10 MAX MIN Chapter 2 Getting Acquainted Using MAX MIN REL The...

Страница 9: ...ing 22 The input value is too large for the selected range 23 Analogue Bar Graph Provides an analog indication of the present input quick response Analogue Bar Graph The bar graph provides an analogue indication of the measured input For most measurement functions the bar graph updates 10 times per second Using MAX MIN The MAX MIN mode stores minimum MIN and maximum MAX input values When the input...

Страница 10: ...s of the Meter B Measuring Currents Black Red Figure 3 2 Currents Measurement Warning If the fuse burns out during measurement the Meter may be damaged or the operator himself may be hurt To avoid possible damage to the Meter or to the equipment under test check the Meter s fuses before measuring current Use proper terminals function and range for the measurement Never place the testing leads in p...

Страница 11: ...normal taking several seconds to obtain a stable reading In order to obtain precision readings use the test lead as short as possible z If Ω reading with shorted test leads is not 0 5Ω check for loose test leads wrong function selected or other causes z The LCD displays OL indicating open circuit or the tested resistor value is higher than the maximum range of the Meter z When resistance measureme...

Страница 12: ...positive connection voltage drop value z Open circuit voltage approximate 2 8V z When diode testing has been completed disconnect the connection between the testing leads and the circuit under test and remove the test leads away from the input terminals F Measuring Capacitance Black Red Figure 3 6 Capacitance Measurement Warning To ensure accuracy the Meter inside is discharged against the tested ...

Страница 13: ...n in Figure 3 8 and proceed the following 1 Set the rotary switch to the primary display shows the room temperature The Meter is default to Celsius C degree unit you can change units by press the BLUE button once you have selected the temperature function 2 Insert the point contact temperature probe into the Meter as figure 10 3 Place the temperature probe to the object being measured The measured...

Страница 14: ...or to the corresponding input terminals and plug the power adaptor to the outlet 3 Insert the object to be measured into the outlet of the power adaptor 4 The measured value shows on the display The primary display shows the power value the left secondary display show the power factor value and right secondary display shows the apparent power value Note z The current of the object being measured m...

Страница 15: ...rrent stored reading the primary display shows the current measurement reading z If there is not set time to store the reading each press of STORE to store one reading An index number increase one z The maximum number of stored reading is 10 When the stored readings memory is full the Meter will stop storing data z To exit press EXIT Recalling Stored Readings Use the following procedure to recall ...

Страница 16: ...fault Description HIGH Max 40000 Press to select OFF Press to select the digit you want to edit OFF Over the upper limits beeps not continuously LOW Max 40000 Press to select OFF Press to select the digit you want to edit OFF Over the lower limits beeps not continuously 10 10 mins power off 20 20 mins power off 30 30 mins power off OFF 10 mins Power off feature is disabled S1 Beeps continuously an...

Страница 17: ...n the rotary switch to OFF and remove all connections from the terminals z Remove the 5 screws from the case bottom z Remove the fuse by gently prying one end loose then take out the fuse from its bracket z Install ONLY replacement fuses with the identical type and specification as follows and make sure the fuse is fixed firmly in the bracket Fuse 1 0 5A 250V fast type fuse ø5 20mm Fuse 2 10A 250V...

Страница 18: ...eature Summary Tri Digital Displays Analogue Bar Graph Primary 40 000 counts except resistance range has 4000 counts Left Secondary 4000 counts Right Secondary 4000 counts Bar Graph 40 segments updates 10 times second Backlight with 2 brightness levels Bright backlight for clear readings in poorly lighted areas Autorange The Meter automatically selects best range AC DC True RMS AC RMS Choices for ...

Страница 19: ...use ø5 20mm 10A 0 001A 1 5 20 10A 250V fast type fuse ø5 20mm Remarks At 10A range z When the measured current is 5A continuous measurement is allowed z When the measured current is between 5A 10A continuous measurement 10 seconds and interval more than 15 minutes D AC Current AC DC measurement is available Accuracy Range Resolution Bandwidth Accuracy Overload Protection 400µA 0 01µA 4000µA 0 1µA ...

Страница 20: ...Not specified K Temperature Degrees Celsius Range Resolution Accuracy Overload Protection 40 C 40 C 3 30 40 C 400 C 1 30 400 C 1000 C 0 1 C 2 5 1000V Fahrenheit Range Resolution Accuracy Overload Protection 40 F 32 F 4 50 32 F 752 F 1 5 50 752 F 1832 F 0 1 F 3 1000V Remarks z Included is a K Type nickel chromium nickel silicon point contact temperature probe which could only measure temperature be...

Страница 21: ...Model VC940 OPERATING MANUAL 21 ...

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