Uni-T UT219M [11/20] 页 11

Содержание

• Content 1
• Limited warranty liability 1
• Preface 1
• I overview 2
• Ii unpacking inspection 2
• Iii safe operation rules 2
• Iv features 4
• V electrical symbols 4
• Vi comprehensive specifications 5
• Vii overall configuration 5
• Viii lcd display ix knobs 6
• X buttons 7
• Measuring 8
• Xi operating instruction for 8
• 页 10 10
• 页 11 11
• 页 12 12
• 页 13 13
• 页 14 14
• 页 15 15
• Xii technical specifications 16
• 页 16 16
• 页 17 17
• Frequency 18
• In case of capacitance to be measured 1 pf it is suggested that the accuracy of measurement can be guaranteed only by using the rel measurement mode 18
• Mhz 1 vrms a 30 vrms 18
• Resistance measurement 8 capacitance measurement 18
• 页 18 18
• Xiii maintenance and repair 19
• 页 19 19
• 页 20 20

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UNI UT219E Operating Manual 4 Resistance measurement UT219E Operating Manual Notes If the resistance to be measured is open circuit or the value of resistance is more than the maximum range of the instrument the OL will be displayed When measuring the on line resistance turn off all power supplies in the circuit to be measured and discharge all residual charges on all capacitors before carrying out measurement In this way the correct measuring can be assured In case of low resistance measuring there is an additional error of about 0 1 Q to 0 2 Q resistance To obtain the precise reading the relative measurement function can be used first short circuit the input probes and press REL button carry out low resistance measurement after the instrument has subject the indicated value when shorting circuit the probes If the resistance value is not less than 0 5 Q when shortening circuit of probes check for any loosening or other causes with the probes 1 Insert the red probe into 2 socket insert the black probe into COM socket When measuring high resistance the reading will become stable after time duration of few seconds 2 Set the functional range switch to Q press This is normal for high resistance measuring SELECT button to select the measuring range of resistance and parallelly connect the probes to Do not input DC or AC 30 V and more voltage to prevent from personal injury both ends of the resistance to be measured 3 Read the value of resistance to be measured directly from the display After completion of all measuring disconnect the probes from the tested circuit 19 20 operation