Digital Ground Resistance Tester Dynamo abandon the traditional manual work, in the use of advanced large scale integrated circuits, application of DC / AC conversion technology will be three side buttons, button four-terminal measurement models into a new type of grounding resistance measuring instrument.
1. How it works:
Work inside the grounds of DC / AC converter to the DC into AC for low-frequency constant current through auxiliary ground electrode C and E composition of the measured object circuit to generate AC voltage drop measured object, the auxiliary grounding into P AC amplifier and then displayed through the detector head into the table. With override switch, available in three different capacity limits: 0 ~ 2Ω, 0 ~ 20Ω, 0 ~ 200Ω.
2. Use:
This form of electricity, telecommunications, railways, telecommunications, mining and other sectors of the grounding resistance measurement of a variety of devices and the measurement of low resistance of the conductor resistance; this table can also measure the soil resistivity and ground voltage.
3. Product another name:
Digital ground resistance tester, digital earth resistance tester, grounding resistance, ground sheets, ground resistance meter, earth resistance meter, earth resistance meter
● structure using high-strength aluminum alloy case, the circuit to prevent the frequency, radio frequency interference detection method using phase-locked loop synchronous tracking and instrumentation together with switched-capacitor filter to have better anti-interference ability.
● the use of DC / AC conversion technology will be a constant DC current into AC so that the low frequency measurements.
● Allow auxiliary grounding resistance in the 0 ~ 2KΩ (RC), 0 ~ 40KΩ (RP) between the change not affect the measurement results.
● No manual adjustment of the balance meter, 3 (1 / 2)-bit LCD display, in addition to resistance testing, can also measure low resistance conductor resistance, soil resistivity and the AC ground voltage. Should the test loop barrier header shows "1" overflow, in line with conventional measurement practices. 1, conditions of use
Ambient temperature: 0 ℃ ~ +45 ℃
Relative humidity: ≤ 85% RH
2, the measuring range and the constant value (RMS)
Resistance: 0 ~ 2Ω (10mA), 2 ~ 20Ω (10mA), 20 ~ 200Ω (1mA)
Voltage: AC 0 ~ 20V
3, measurement accuracy and resolution
Accuracy: 0 ~ 0.2Ω ≤ ± 3% ± 1d
0.2Ω ~ 200Ω ≤ ± 1.5% ± 1d
1 ~ 20V ≤ ± 3% ± 1d
Resolution: 0.001Ω, 0.01Ω, 0.1Ω, 0.01V
4, auxiliary earth resistance and ground voltage measurement errors caused by
? Allow auxiliary earth resistance RC (C1 and C2 between) <1.8KΩ;
RP (P1 and P2 between) <40KΩ error ≤ ± 5%
? Allowed to voltage ≤ 5V (power frequency RMS) error of ≤ ± 5%
5, power supply and power consumption
≤ 2W maximum power dissipation
DC: 8 × 1.5V (AA, R6) batteries AC: 220V/50Hz
Size: 220mm × 200mm × 105mm
Weight: ≤ 1.4kg
1. How it works:
Work inside the grounds of DC / AC converter to the DC into AC for low-frequency constant current through auxiliary ground electrode C and E composition of the measured object circuit to generate AC voltage drop measured object, the auxiliary grounding into P AC amplifier and then displayed through the detector head into the table. With override switch, available in three different capacity limits: 0 ~ 2Ω, 0 ~ 20Ω, 0 ~ 200Ω.
2. Use:
This form of electricity, telecommunications, railways, telecommunications, mining and other sectors of the grounding resistance measurement of a variety of devices and the measurement of low resistance of the conductor resistance; this table can also measure the soil resistivity and ground voltage.
3. Product another name:
Digital ground resistance tester, digital earth resistance tester, grounding resistance, ground sheets, ground resistance meter, earth resistance meter, earth resistance meter
● structure using high-strength aluminum alloy case, the circuit to prevent the frequency, radio frequency interference detection method using phase-locked loop synchronous tracking and instrumentation together with switched-capacitor filter to have better anti-interference ability.
● the use of DC / AC conversion technology will be a constant DC current into AC so that the low frequency measurements.
● Allow auxiliary grounding resistance in the 0 ~ 2KΩ (RC), 0 ~ 40KΩ (RP) between the change not affect the measurement results.
● No manual adjustment of the balance meter, 3 (1 / 2)-bit LCD display, in addition to resistance testing, can also measure low resistance conductor resistance, soil resistivity and the AC ground voltage. Should the test loop barrier header shows "1" overflow, in line with conventional measurement practices. 1, conditions of use
Ambient temperature: 0 ℃ ~ +45 ℃
Relative humidity: ≤ 85% RH
2, the measuring range and the constant value (RMS)
Resistance: 0 ~ 2Ω (10mA), 2 ~ 20Ω (10mA), 20 ~ 200Ω (1mA)
Voltage: AC 0 ~ 20V
3, measurement accuracy and resolution
Accuracy: 0 ~ 0.2Ω ≤ ± 3% ± 1d
0.2Ω ~ 200Ω ≤ ± 1.5% ± 1d
1 ~ 20V ≤ ± 3% ± 1d
Resolution: 0.001Ω, 0.01Ω, 0.1Ω, 0.01V
4, auxiliary earth resistance and ground voltage measurement errors caused by
? Allow auxiliary earth resistance RC (C1 and C2 between) <1.8KΩ;
RP (P1 and P2 between) <40KΩ error ≤ ± 5%
? Allowed to voltage ≤ 5V (power frequency RMS) error of ≤ ± 5%
5, power supply and power consumption
≤ 2W maximum power dissipation
DC: 8 × 1.5V (AA, R6) batteries AC: 220V/50Hz
Size: 220mm × 200mm × 105mm
Weight: ≤ 1.4kg