Product Features
1. 2/3/4-wires measurement of earth resistance, soil resistivity, earth voltage, AC voltage;
2.Measurement Range: Earth Resistance: 0.00Ω-30.00kΩ; 0~600V, Soil Resistivity: 0.00Ωm-9000kΩm;
3. Data upload: RS232 interface
4.Date storage:300 sets
ETCR3000B Earth Resistance Soil Resistivity Tester is specially designed and manufactured for measuring earth resistance, soil resistivity, earth voltage, AC voltage. Adopting the latest digital and micro-processing technology, precise 4-pole, 3-pole and simple 2-pole method for earth resistance measurement, importing FFT and AFC technology, with a unique function of anti-interference capability and the ability to adapt to the environment, consistency of repeat testing, to ensure high precision, high stability and reliability for prolonged measure, which is widely used in electric power, telecommunications, meteorology, oil field, construction, lightning protection, industrial electrical equipment and other earth resistance, soil resistivity, earth voltage, AC voltage measurement.
ETCR3000B Earth Resistance Soil Resistivity Tester is composed of host machine, monitoring software, testing wires, auxiliary ground pillars, communication wires and others. The large LCD display of host machine is with blue backlight and bar graph indicating that can be seen clearly. At the same time it can store 300 sets of data, fulfilling historical inquiry and online real-time monitoring through monitoring software, dynamic display, alarm indicator, and with the functions like historical data access, reading, preservation, report forms, printing and so on.
Technical Specifications
1.Base Conditions and Working Conditions
Influence Quantity | Base Condition | Working Conditions | Remark |
Ambient Temp | 23℃±1℃ | -10℃-40℃ | ---- |
Ambient Humidity | 40%-60% | <80% | ---- |
Working Voltage | 9V±0.1V | 9V±1.5V | 9V±1.5V |
Auxiliary Earth Resistance | <100Ω | <30kΩ | ---- |
Interference Voltage | ---- | <30kΩ | ---- |
Interference Current | ---- | <2A | ---- |
Electrode Distance when measuring R | a>5d | a>5d | ---- |
Electrode Distance when measuring ρ | a>20h | a>20h | ---- |
2.Intrinsic error and performance indicators under base conditions
Category | Measurement Range | Intrinsic Error | Resolution |
Earth Resistance (R) |
0.00Ω-30.00Ω | ±2%rdg±3dgt | 0.01Ω |
30.0Ω-300.0Ω | ±2%rdg±3dgt | 0.1Ω | |
300Ω-3000Ω | ±2%rdg±3dgt | 1Ω | |
3.00kΩ-30.00kΩ | ±4%rdg±3dgt | 10Ω | |
Soil Resistivity (ρ) |
0.00Ωm-99.99Ωm | According to the precision of R (ρ=2πaR a:1 m-100m, π=3.14) |
0.01Ωm |
100.0Ωm-999.9Ωm | 0.1Ωm | ||
1000Ωm-9999Ωm | 1Ωm | ||
10.00kΩm-99.99kΩm | 10Ωm | ||
100.0kΩm-999.9kΩm | 100Ωm | ||
1000kΩm-9000kΩm | 1000Ωm | ||
Earth Voltage | AC 0.0-600V | ±2%rdg±3dgt | 0.1V |
Note: 1). When rC max or rP max, additional error≤±3%rdg±5dgt.
(rC max: 4kΩ+100R<50kΩ, rPmax: 4kΩ+100R<50kΩ)
2). When 5V interference voltage, additional error≤±5%rdg±5dgt.
3.General Specification
Function | Measurement of 2/3/4-pole earth resistance, soil resistivity, earth voltage, AC voltage |
Power Supply | DC 9V(Zi-Mn dry battery R14S 1.5V 6 PCS, continuous standby for 300 hours ) |
Measurement Range | Earth Resistance: 0.00Ω-30.00kΩ Soil Resistivity: 0.00Ωm-9000kΩm |
Measuring Mode | Precise 4-pole measurement, 3-pole measurement, simple 2-pole measurement |
Measuring Method |
Earth Resistance: rated current change-pole method, measurement current 20mA Max Soil Resistivity: 4-pole measurement (Wenner method) |
Test Frequency | 128Hz/111Hz/105Hz/94Hz(AFC) |
Short-circuit Test Current | AC 20mA max |
Open-circuit Test Current | AC 40V max |
Test Voltage Wave | Sine wave |
Electrode Distance Range | Can be set 1m-100m |
Shift |
Earth resistance: 0.00Ω-30.00kΩ, automatic shif Soil Resistivity: 0.00Ωm-9000kΩm, automatic shift |
Backlight | Blue screen backlight, suitable for dim places |
Display Mode | 4-digital Oversized LCD display, blue screen backlight |
Measuring Indicator | During measurement, LED flash indicator, LCD count down display, progress bar indicator |
LCD Frame Dimension | 128mm×75mm |
LCD Window Dimension | 124mm×67mm |
Dimension | L×W×H: 215mm×190mm×95mm |
Standard Test Wire | 4 wires: each for red 20m, black 20m, yellow 10m, and green 10m |
Simple Test Wire | 2 wires: each for red 1.6m and black 1.6m |
Auxiliary Earthing Rod | 4 wires: Φ10mm×150mm |
Measuring Rate | Voltage to ground: about 3 times/second Earth resistance, soil resistivity: about 5 seconds/time |
Measuring Times | Over 5000 times (Short-circuit test, interval time should be at least 30 seconds) |
Circuit Voltage | below AC 600V |
RS232 Interface | Possess RS232 interface,Software monitor, storage data can be uploaded to computer, saved or printed. |
Communication Wire | One piece of RS232 communication wire, with length 1.5m |
Data Storage | 300 sets, “MEM” icon storage indicator, flash display “FULL” icon to indicate storage is full |
Data Hold | Data hold function: “HOLD” icon display |
Data Read | Data read function: “READ” icon display |
Overflow Display | Exceeding measuring range overflow function: “OL” icon display |
Interference Test | Recognize interference signal automatically, “NOISE” icon display when interference voltage exceed 5V |
Auxiliary Earthing Test | Can measure auxiliary earth resistance, 0.00KΩ-30kΩ(100R+rC<50kΩ, 100R+rP<50kΩ) |
Alarm Function | When measuring value exceeds alarm setting value, there is “Toot-toot-toot” alarm hint |
Battery Voltage | When battery voltage decreases to about 7.5V, battery voltage low icon will display, reminding to replace battery. |
Power Consumption | Standby: about 20mA (Backlight shut off) Boot and with backlight: about 45mA (25mA without backlight) Measurement: about 100mA (Backlight shut off) |
Weight | Total weight: 4.5kg (including package) Tester: 1443g (including battery) Tesing wires: 1560g Auxiliary earthing rods: 935g (4pcs) |
Working Temperature & Humidity | -10℃-40℃, below 80%rh |
Storage temperature & humidity | -20℃-60℃, below 70%rh |
Overload Protection | Measuring earth resistance: between each interfaces of C(H)-E,P(S)-ES, AC 280V/3 seconds |
Insulation Resistance | Over 20MΩ (between circuit and enclosure it is 500V) |
Withstanding Voltage | AC 3700V/rms (Between circuit and enclosure) |
Electromagnetic Features | IEC61326(EMC) |
Protection Type | IEC61010-1 (CAT Ⅲ 300V,CAT IV 150V,Pollution 2), IEC61010-031, IEC61557-1 (Earth resistance), IEC61557-5 (Soil resistivity), JJG 366-2004 |
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We are Zhongli Instrument Technology Co., Ltd, an instrument Expert, Headquartered in Dongguan, Guangdong, China.since 2007, specialized in manufacturing Lab testing equipments.
Throughout its more than 13 years of history, Our products have sold well in the Europe, America and Southeast Asia market and total more than 80 countries these years,especially favored by European and American countries.
Our equipments cover a wide range of industries, such as rubber and plastics industry, food industry, packaging industry, electronics industry, etc.and are suitable for all scientific research units, quality inspection institutions and academic fields.
In addition to standard machines, our R&D team can customize it for you. Just tell us your needs and we will make you satisfied.
1. How to choose the most suitable Mechanical Equipment ?
Our professional team will give you the best suggestion as long as you tell us what kind of test you need to do andthe required specification.
2. What’s the delivery term?
At most of time, we have stock in the factory. If there is no stock, normally, the delivery time is 15~20 working days after deposit receipt. If you are in urgent need, we can consider making special arrangement for you.
3. Do you accept customization service?
Yes, of course, we can not only offer standard machines, but also customized machines
according to your request. Don’t hesitate to tell us your requirement, we will try our best to meet your needs.
4. Can we visit your factory before order?
Yes, we warmly welcome and sincerely invite you or your team to visit our factory, we will help to arrange hotel and pick up you from airport.
5. Do you have customers of our country before?
Now our testing machines have been sold to more than 80 countries, like USA, Canada, Russia,UK, Italy, Germany, European , India, Pakistan, Philippine, Singapore, Malaysia,Thailand , Vietnam, Korea,Saudi Arabia,Brazil...and so on.
6. How about your warranty?
Generally,our warranty is two years. Within the warranty period, we can offer technique support and part parts change, necessarily, our engineers may go to your place for better service.
7. How about the packing for machine, is it safely protected during transportation?
Our machine is packed by standard export wooden box, it won’t be damaged. We’ve delivered many testing machines abroad by sea or by air without damage.
8. What is the order process?
Inquiry - quotation - communication - order confirming - deposit payment - production - testing and debugging - balance payment - packing - delivery - customer receiving - after service.
9. How to install and use the product?
The product is shipped with an operating instructions and video of English version.
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