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Description
Soil resistivity meter
intro
Specially designed and manufactured for the field measurement of grounding resistance, soil resistivity, grounding voltage, AC voltage and the use of new digital and micro processing technology, precision 4-wire method, 3-wire method and simple 2-wire method to measure the grounding resistance, the introduction of FFT(Fast Fourier Transform) technology, AFC(automatic frequency control) technology, with anti-interference ability and environmental adaptability. Repeated testing is consistent and strong, ensuring high precision, high stability and high reliability of measurement over the years.
Widely used in electric power, telecommunications, meteorology, oil field, construction, lightning protection and industrial electrical equipment, such as ground resistance, soil resistivity, grounding voltage, AC voltage measurement.
Ground resistance Soil resistivity tester is composed of host, monitoring software, test line, auxiliary ground rod, communication line, etc. Host large LCD display, white screen backlight, rod chart indication, at a glance. At the same time, it can store 300 sets of data, realize historical query and online real-time monitoring function through monitoring software, dynamic display, alarm indication, and historical data reading, consulting, saving, reporting, printing and other functions.
Soil resistivity meter
| 1. Baseline and operating conditions | |
| Influence quantity Base condition Operating conditions | |
| Ambient temperature | 23℃±1℃-10℃ ~ 40℃ |
| Environmental wet crossing | 40% ~ 60% < 80% |
| Instrument operating voltage | 9V±0.1V9V±1.5V |
| Auxiliary grounding resistance | < 100Ω < 30kΩrC, rP |
| Interference voltage | < 20V |
| Interference current | < 2A |
| Electrode spacing during R measurement | a > 5da > 5d |
| Electrode spacing when measuring ρ | a > 20ha > 20h |
| 2. General specification | |
| Power | two, three, four wire measurement ground resistance, soil resistivity; Grounding voltage and AC voltage measurement |
| Power source | DC 9V (alkaline dry battery LR14 1.5V 6, continuous standby 300 hours) |
| Measuring range | Ground resistance: 0.00Ω ~ 30.00kΩ; Soil resistivity: 0.00Ωm ~ 9000kΩm; Grounding voltage: 0V to 600V |
| Measurement method | precision 4-wire, 3-wire method measurement, simple 2-wire grounding resistance measurement |
| Measuring method | Ground resistance: rated current pole-changing method, measuring current 20mA Max |
| Soil resistivity | Quadrupole method (Wenner method) |
| Voltage to ground | average rectification (P(S)-ES interface) |
| Test frequency | 128Hz/111Hz/105Hz/94Hz(AFC) |
| Short-circuit test current | AC 20mA max |
| Open circuit test voltage | AC 40V max |
| Test voltage waveform | sine wave |
| Electrode spacing range | 1m ~ 100m can be set |
| Shift | Ground resistance: 0.00Ω ~ 30.00kΩ automatic shift; Soil resistivity: 0.00Ωm ~ 9000kΩm automatic shift |
| Backlight | controllable white screen backlight, suitable for use in dim places |
| Display mode | 4-bit large LCD display with white backlight |
| Measurement indication | LED flashing during measurement, LCD backward counting, progress bar chart indication |
| LCD size | 128mm x 75mm |
| LCD display area | 124mm x 67mm |
| Instrument size | Height width: 215mm×190mm×95mm |
| There are four standard test lines | red 20m, black 20m, yellow 10m, and green 10m each |
| 2 simple test lines | red 1.6m, black 1.6m each |
| Four auxiliary ground rods | φ10mm x 150mm |
| Measuring time | Voltage to ground: about 3 times/second; Ground resistance, soil resistivity: about 5 seconds/time |
| Measurement times | more than 5000 times (short circuit test, test once, stop for 30 seconds and test again) |
| Line voltage | Measured below AC 600V |
| RS232 interface | With RS232 interface, software monitoring, stored data can be uploaded to the computer, save and print |
| Communication line | 1 RS232 communication line, 1.5m long |
| Data storage | 300 groups, “MEM” storage indication, display “FULL” symbol indicates that the storage is full |
| Data HOLD | The “hold” symbol indicates when data is held |
| Data access | The “READ” symbol indicates when data is accessed |
| Overflow display | The “OL” symbol indicates when overrange overflow |
| Interference test | automatic identification of interference signals, interference voltage is higher than 5V “NOISE” symbol indication |
| Auxiliary grounding test | with auxiliary grounding resistance test function, 0.00KΩ ~ 30kΩ(100R+rC< 50kΩ, 100R+rP< 50 k Ω) |
| Alarm function | When the measured value exceeds the alarm setting value, “dud-dud-dud-dud-” alarm prompt |
| Battery voltage | When the battery voltage drops to about 7.5V, the battery low voltage symbol “is displayed to remind you to replace the battery |
| Power consumption | Standby: about 20mA(backlight off); Turn on the backlight: about 45mA(backlight off 25mA); Measurement: Approx. 100mA(backlight off) |
| Quality | Total weight: 4.5kg(including packaging); Instrument: 1443g(including battery); Test line: 1560g; Auxiliary ground rod: 935g(4) |
| Working temperature and humidity | -10℃ ~ 40℃; Less than 80%rh |
| Storage temperature and humidity | -20℃ ~ 60℃; Below 70%rh |
| Overload protection | Measuring ground resistance: C(H)-E, P(S)-ES AC 280V/3 seconds between ports |
| Insulation resistance | more than 20MΩ (500V between circuit and housing) |
| Voltage resistance | AC 3700V/rms(between circuit and housing) |
| Electromagnetic characteristics | IEC61326(EMC) |
| Suitable for safety | IEC61010-1(CAT Ⅲ 300V, CAT IV 150V, pollution level 2); IEC61010-031; IEC61557-1(ground resistance); IEC61557-5(Soil resistivity); JJG 366-2004. |
Soil resistivity meter
