Wuhan GDMK Electric Co., Ltd.
Overview:
Digital Ground Resistance Tester Rejects the traditional manual manual power generation method adopts advanced media and large scale integrated circuits, and uses DC / AC conversion techniques to combine the triple buttons and four-end button measurement modes with new ground resistors. .
The working principle is that the DC / AC converter in the machine changes the DC constant current, and the circuit is formed by the auxiliary ground electrode C and the measurement object E, which generates an AC voltage drop on the measuring object, and feeds the AC amplifier through assist grounding. The electrode P amplified, and then multiplied by multiplying by multiplying by a power switch to display the instrument header head, you can get three different number limits: 0 ~ 2O0 ~ 20O0 ~ 200O.
Nearly the resistance tester is suitable for measuring the electrical resistance of low resistance of various departments such as various devices and power postal railway communication mining; Nearly the ground resistance tester also measures soil resistivity and ground voltage.
Technical parameters:
| Working Conditions | Ambient temperature | 0?~+45? |
| Relative humidity | =85%RH | |
Measurement range and constant current value (effective value) | Resistance | 0~20O(10mA),2~200O(1mA),20~2000O(0.1mA) |
| Voltage | AC0~19.99V | |
| Measurement accuracy and resolution | Precision rowspan | 0~0.2O=±3%±1d |
| 0.2O~1999.9O=±1.5%±1d | ||
| 1~19.99V=±3%±1d | ||
| Resolution | 0.01O?0.1O?1O?0.01V | |
Measurement error caused by auxiliary grounding resistance and ground voltage | Allow auxiliary grounding resistance | RC(between C1 and C2) |
| 0~20O=1kO | ||
| 20~2000O=2kO | ||
| RP(between P1 and P2) < 40kO, Error=±5% | ||
Allowable ground voltage (effective value of power frequency) | =5V, Error=±5% | |
| Power and power consumption | Maximum power loss | =2W |
| DC | 8 × 1.5V (AA R6) battery | |
| AC | 220V/50Hz | |
| volume and weight | Dimensions | 220×200×105mm3 |
| Weight | =1.4kg |