0512-66050595
product name：ST2241 Soil Resistivity Tester
1、 Structural features
2、 Overview
2.1 Basic functions and standards: ST2241 grounding resistance. The soil resistivity tester is a comprehensive testing instrument for on-site measurement of grounding resistance, soil resistivity, grounding voltage, and AC voltage in grounding system survey and acceptance. Comply with the national standard GB/T 17949.1-2000 "Guidelines for the measurement of soil resistivity, grounding impedance, and ground potential of grounding systems - Part 1: Conventional measurement".
2.2 Complete instrument composition: ST2241 grounding resistance and soil resistivity tester, consisting of a host, computer monitoring software, soil stratification analysis software, testing line, auxiliary grounding rod, communication line, etc.
2.3 Advantages and characteristics:
1) The design of the testing instrument complies with national standards and industry norms, is at the forefront of China, and complies with the national standard GB/T 17949.1-2000 "Guidelines for the Measurement of Soil Resistivity, Grounding Impedance, and Ground Potential of Grounding Systems - Part 1: Conventional Measurements"
2) Equipped with intelligent computer software, it can save, query, statistically analyze data, and print reports. The soil resistivity stratification analysis software is the only one in China and is at the forefront of the industry.
3) USB communication interface, with good universality and convenience. Compared to RS232 or 485 methods, these ports are generally difficult to configure on computers!
4) It can be operated independently from a computer, with miniaturization and integrated manual/automatic operation. Easy to operate and stable in performance, all parameter settings and function conversions are entered using a digital keyboard. Avoiding defects such as unstable performance and limited lifespan of traditional mechanical switching.
7) Expandable function: In addition to being used as a soil resistivity tester, the resistivity tester can also be equipped with a four probe test bench, and the probe can be expanded to an AC four probe tester.
2.4 Scope of application: It is widely used for measuring grounding resistance, soil resistivity, grounding voltage, and AC voltage in power, telecommunications, meteorology, oil fields, buildings, lightning protection, and industrial electrical equipment.
3、 Technical parameters
3.1. Reference and working conditions
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Influence quantity |
Benchmark conditions |
Working conditions |
Notes |
|
Auxiliary grounding resistance value |
＜100Ω |
＜100kΩ |
rC、rP |
|
Electrode spacing during R measurement |
a＞5d |
a＞5d |
---- |
|
measure ρ Time electrode spacing |
a＞20h |
a＞20h |
---- |
|
Ambient Temperature |
23℃±1℃ |
-10℃～40℃ |
---- |
|
Environmental wet transition |
40%～60% |
＜80% |
---- |
|
Function |
Two, three, and four wire measurement of grounding resistance and soil resistivity;
|
|
Power supply |
DC 8.4V (2 rechargeable lithium batteries) |
|
Range |
Grounding resistance: 0.00 Ω~100.0k Ω |
|
Soil resistivity: 0.00 Ω m~1k Ω m (multiplied by a coefficient of 2 π a) |
|
|
Measurement method |
Precision 4-wire, 3-wire measurement, simple 2-wire measurement of grounding resistance |
|
Short circuit test current |
AC ±20mA max |
|
Open circuit test voltage |
AC ±20V max |
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Test voltage waveform |
Square Wave（1KHz） |
|
Electrode spacing range |
Can be set from 1m to 10m |
|
Standard test line |
4 pieces: 2 pieces per 20m long, 2 pieces per 10m long |
|
Simple testing line |
2: 1 yellow 1.0m and 1 green 1.0m each |
|
Auxiliary grounding rod |
Auxiliary grounding rod |
|
Line voltage |
Measurement below AC 600V |
|
USB interface |
Equipped with USB interface, software for real-time monitoring, data storage can be uploaded to the computer, saved and printed, soil stratification analysis, and other functions |
|
Communication line |
1 USB cable, 1.5m long |
|
Auxiliary grounding test |
Equipped with auxiliary grounding resistance value testing function, but must meet the requirements of
|
|
Working temperature and humidity |
-10℃～40℃； |
|
Storage temperature and humidity |
-20℃～60℃； |
|
Measurement function |
Measuring range |
Accuracy |
Resolution |
|
Grounding resistance (R) |
0.200Ω～2.000Ω |
±5%rdg±5dgt |
0.001Ω |
|
02.00Ω～20.00Ω |
±2%rdg±3dgt |
0.01Ω |
|
|
020.0Ω～200.0Ω |
±2%rdg±3dgt |
0.1Ω |
|
|
0200Ω～2000Ω |
±2%rdg±3dgt |
1Ω |
|
|
02.00kΩ～20.00kΩ |
±5%rdg±5dgt |
10Ω |
|
|
Soil resistivity (ρ) |
Based on the measurement range of R (ρ=2πa(R÷100) a:1 m～100m；π=3.14) (ρmin = 1.256Ωm , ρmax = 125.6KΩm ) |
||
|
接地电压 |
AC 0.0～600V |
±2%rdg±3dgt |
0.1V |
Company Name: Suzhou Jingge Electronics Co., Ltd
Address: Room 202, Building 20, No. 199, Xiarong Street, East the Taihu Lake Ecological Tourism Resort (the Taihu Lake New Town), Wujiang District, Suzhou
MailCompilation：215200
Contacts ：Grace
Phone：+8618762109211
Mailbox：zhengjingjing@szjgdz888.com
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