Advanced Earth Resistance Tester Digital Ground Resistance Test/Soil Resistivity Test Data Storage LCD Backlight Pinaudto nga Earth Resistance Tester Digital Ground Resistance Test/Soil Resistivity Test Data Storage LCD Backlight

Pangutana

Sertipiko: CE, UKCA

• Dako nga 4-digit LCD Display, 5s sampling time
  

• 2/3/4-wire earth resistance ug soil resistivity measurements
  

• Selectable test frequencies (94Hz/128Hz)

• Disturbance voltage (Ust) ug frequency (Fst) measurement

• Earth resistance, RH ug RS measurements

• LCD backlight; auto power off

• Data hold

• 20 sets of data storage

• Double insulation

• Compensating resistance RK measurement

Especificasyon

Unsa ang pamaagi sa pagkuha sa ground resistance ug soil resistivity?

Ground Resistance Measurement:

• Four-Terminal Method: Ang UT572 kasagaran nagamit og four-terminal method (o ang Kelvin method) alang sa ground resistance measurement. Kini nga pamaagi gigamit og duha ka auxiliary electrodes (auxiliary current electrode ug auxiliary voltage electrode) ug isang ground electrode sa ilawom sa pagkuha.

• Current Injection: Ang tester mag-inject og certain frequency current sa ground pinaagi sa auxiliary current electrode.

• Voltage Measurement: Ang voltage drop gihatag sa current gigamit sa auxiliary voltage electrode.

• Resistance Calculation: Ang ground resistance value gi-compute batas sa measured current ug voltage drop.

Soil Resistivity Measurement:

• Four-Terminal Method: Ang four-terminal method usab ang gigamit, kini gigamit og upat ka electrodes (duha ka current electrodes ug duha ka voltage electrodes) aron kuhaan ang soil resistivity.

• Current Injection: Ang current mag-inject sa soil pinaagi sa current electrodes.

• Voltage Measurement: Ang voltage drop gihatag sa current gigamit sa voltage electrodes.

• Resistivity Calculation: Ang soil resistivity gi-compute batas sa measured current ug voltage drop.