background image

AC Current Measurement

1. Set the selector switch to the desired “

A

~

” position.

2. Disconnect the test leads from the meter.

3. Clamp the jaws around the one conductor to be measured.

Center the conductor within the jaw using the centering marks
as guides.

4. Read the result on the LCD panel.

Resistance Measurement

1. Connect the black test lead to the “

COM

” socket and the red test

lead to the “

V

Ω

Hz

” socket.

2. Set the selector switch to the desired “

Ω 

)

” position.

3. Press the “

SELECT

” button to choose the 

resistance

measurement.

4. Connect the tips of the test leads to the points where the value

of the resistance is needed.

5. Read the result from the LCD panel.

Note: 

When taking the resistance value from a circuit system, make

sure the power is disconnected and all capacitors are discharged.

Capacitance Measurement

1. Connect the black test lead to the “

COM

” socket and the red test

lead to the “

V

Ω

Hz

” socket.

2. Set the selector switch to the desired “

Ω 

)

” position.

3. Press the “

SELECT

” button to choose the 

capacitance

measurement.

4. Connect the tips of the test leads to the points where the value

of the capacitance is needed.

5. Read the result from the LCD panel.

Note:

a) Before testing, discharge the capacitors by shorting the leads together.

Use caution when handling capacitors because they may have a
considerable charge on them before discharging.

b) Before testing, pres the “

REL

(DCA ZERO ADJ)” button to eliminate the

zero error.

c) When testing 100

μ

F capacitors, note that there will be a time lag of

approximately 15 seconds.

-13-

Содержание ST-3030

Страница 1: ...OPERATOR S INSTRUCTION MANUAL ST 3030 3 AC DC DIGITAL CLAMP METER Copyright 2008 Elenco Electronics Inc...

Страница 2: ...Replacement 16 11 Maintenance 16 WARNING PLEASE READ THIS INSTRUCTION MANUAL CAREFULLY Misuse and or abuse of this instruction manual cannot be prevented by any printed word and may cause injury and o...

Страница 3: ...test lead before disconnecting the common test lead Check the main function dial and make sure it is at the correct position before each measurement Do not perform resistance capacitance temperature d...

Страница 4: ...or destruction of part or all of the instrument This marking advises the user that the terminal s so marked must not be connected to a circuit point at which the voltage with respect to earth ground...

Страница 5: ...ns the meter will switch to standby mode Press any button or rotate the selector switch to exit standby mode When reseting the meter press and hold the SELECT button to disable auto power off Safety S...

Страница 6: ...erload protected 5 Features 3 digit 4 000 count display AC DC clamp on meter Auto manual range Basic accuracy 0 5 Diode check continuity buzzer Relative measurement Data hold Back light Auto power off...

Страница 7: ...e selection of Frequency Measurement Hz mode or the duty cycle measurement duty mode 7 V Hz Jack The red test lead is inserted into this jack for all measurements except current amps 8 COM Jack The bl...

Страница 8: ...nt is in the reverse direction of the polarity arrow Note Polarity arrow indicates current flow from positive to negative Low Battery Annunciator This annunciator is displayed when the battery needs t...

Страница 9: ...displayed annunciator indicates the range of capacitance that is being measured Frequency Hertz Annunciators These annunciators are displayed whenever Frequency is being measured The displayed annunci...

Страница 10: ...otection 600VDC or AC rms Impedance 10M More than 100M on 400mV range DC Current Overload Protection 1 000A DC or AC rms AC Current Average Sensing calibrated to rms of sine wave Frequency 40 100Hz Ov...

Страница 11: ...0 2 0 1 4k 1 40k 10 400k 100 4M 1k 40M 2 0 3 10k Range Accuracy Resolution 40nF 3 0 10 10pF 400nF 2 5 5 100pF 4 F 1nF 40 F 5 0 10 10nF 100 F 100nF Range Description Test Condition Display read approx...

Страница 12: ...o the test circuit where the value of voltage is needed 5 Read the result on the LCD panel 6 With the meter on the AC range press the Hz DUTY button to measure the frequency or duty cycle DC Current M...

Страница 13: ...hen taking the resistance value from a circuit system make sure the power is disconnected and all capacitors are discharged Capacitance Measurement 1 Connect the black test lead to the COM socket and...

Страница 14: ...aking this measurement Frequency and Duty Cycle Measurement 1 Connect the black test lead to COM socket and the red test lead to the V Hz socket 2 Set the selector switch to desired Hz position 3 Pres...

Страница 15: ...ge This function is non effective on the Hz DUTY measurement Auto Manual Range The auto range mode is a convenient function but it might be faster to manually set the range when you measure values tha...

Страница 16: ...ect both test leads and never use the meter while the battery cover is removed 2 To avoid contamination or static damage do not touch the circuit board without proper static protection 3 If the meter...

Отзывы: