0 to 30kOhm Earth Resistance Meter Soil Resistivity Tester with 300 Data Storage
Earth Resistance Soil Resistivity Tester, adopts the precision 4-wire method, 3-wire method and simple 2-wire method to measure earth resistance, earth resistance range: 0.00Ω～30.00kΩ, soil resistivity range: 0.00Ωm～9000kΩm, earth voltage range: AC 0～600V. Import FFT (fast Fourier transform) technology, AFC (automatic frequency control) technology, with unique anti-interference ability and environmental adaptability, high repeated test consistency. ensure the measurement of high precision, high stability and reliability.
ETCR3000B Earth Resistance Soil Resistivity Tester is composed of host machine, monitoring software, test wires, auxiliary ground rod and communication cable. Host machine with large LCD display, white backlight, bar chart indication, clear at a glance. It can store 300 sets of data at the same time, through the monitoring software to relize historical access and online real-time monitoring functions, dynamic display, alarm indication, with historical data reading, accessing, saving, reporting, printing and other functions
Reference Conditions And Working Conditions:
Influence Constant | Base Condition | Working Conditions | Remark |
Ambient Temp | 23℃±1℃ | -10℃-40℃ | ---- |
Ambient Humidity | 40%-60% | ＜80% | ---- |
Working Voltage | 9V±0.1V | 9V±1.5V | --- |
Auxiliary Earth Resistance Value | ＜100Ω | ＜30kΩ | rC、rP |
InterferenceVoltage | Non | ＜20V | ---- |
InterferenceCurrent | Non | ＜2A |
|
Electrode Distance of measuring R | a＞5d | a＞5d | ---- |
Electrode Distance of measuring ρ | a＞20h | a＞20h | ---- |
Technical Specifications:
Function | 2/3/4-wire method measure earth resistance, soil resistivity; measurement of earth voltage, AC voltage |
Power Supply | DC9V( Alkaline dry battery LR14 1.5V 6 PCS, continuous standby for 300 hours )Battery not included |
MeasurementRange | Earth Resistance: 0.00Ω-30.00 kΩ |
Soil Resistivity: 0.00Ωm-9000 kΩm | |
Earth Voltage:0V～600V | |
Measurement Mode | Precise 4-wire, 3-wire, simple 2-wire measurement of earth resistance |
Measurement Method | Earth Resistance: rated current change-pole method, test current 20mA Max Soil Resistivity: 4-pole method (Wenner method) Voltage to ground: average rectification(between P(S)-ES interface) |
Test Frequency | 128Hz/111Hz/105Hz/94Hz(AFC) |
Short-circuit Test Current | AC 20 mA 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-30.00 kΩ automatic shift |
Soil Resistivity: 0.00Ωm-9000 kΩm automatic shift | |
Backlight | Controllable white screen backlight, suitable for dim places |
Display Mode | 4-digital super-large LCD display, white screen back light |
Measurement Indication | During measurement, LED flashes, LCD count down display, progress bar indication |
LCD Dimension | 128 mm×75 mm |
LCD display Dimension | 124 mm×67 mm |
Meter Dimension | 215 mm(L)×190 mm(W)×95 mm (H) |
Standard Test Wire | 4 wires: each for red 20m, black20m, yellow10m, and green 10m |
Simple Test Wire | 2 wires: each for red1.6 mand black1.6m |
Auxiliary Ground Rod | 4 pcs: Φ10 mm×150 mm |
Measurement Time | Voltage to ground: about 3 times/second |
Earth resistance, soil resistivity: about 5 seconds/time | |
Measurement Times | Over 5000 times (Short-circuit test, measurementinterval time should be at least 30 seconds) |
Line Voltage | below AC 600V |
Communication Interface | With USB interface, software monitoring, storage data can be uploaded to computer, saved or printed. |
Communication Cable | 1 PCS USB communication cable, length 1.5m |
Data Storage | 300 sets, “MEM” symbol storage indication,display “FULL” symbol indicate storage full |
Data Hold | Data hold function: “HOLD” symbol display |
Data Access | Data read function: “READ”symbol display |
Overflow Display | Over range overflow function: “OL” symbol display |
Interference Test | Recognize interference signal automatically, “NOISE” symbol display when interference voltage exceed 5V |
Auxiliary Ground Test | With auxiliary earth resistance test function, 0.00KΩ-30kΩ(100R+rC<50kΩ, 100R+rP<50kΩ) |
Alarm Function | Measurement value exceeds alarm setting value, will “Toot-toot-toot” alarm hint |
Battery Voltage | When power voltage lower than 7.8V, display low power voltage symbol,and remind to replace battery |
Working Current | Standby: about 20mA (Backlight shut off) |
Boot up and with backlight: about 45mA (25mA without backlight) | |
Measurement: about 100mA (Backlight shut off) | |
Weight | Tester: 950g |
Test wires:1560g | |
Auxiliary ground rods:935g(4pcs) | |
WorkingTemperature & Humidity | -10℃-40℃, below 80%rh |
Storage temperature & humidity | -20℃-60℃, below 70%rh |
Overload Protection | Measurement of earth resistance: between each interfaces ofC(H)-E、P(S)-ES,AC 280V/3 seconds |
Insulation Resistance | Over 20MΩ (between circuit and shell 500V) |
Withstand Voltage | AC 3700V/rms (Between circuit and enclosure) |
Electromagnetic Features | IEC61326(EMC) |
Suitable Safty Standard | IEC61010-1 (CATⅢ300V、CAT IV 150V、Pollution Level 2), IEC61010-031, IEC61557-1 (Earth resistance), IEC61557-5 (Soil resistivity), JJG 366-2004 |
Intrinsic error and performance indicators under base conditions:
Measurement Function | MeasurementRange | Accuracy | 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 | (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 | 1kΩm | ||
Earth Voltage | AC 0.0-600V | ±2%rdg±3dgt | 0.1V |
Packing
Meter | 1 PCS |
Aluminum Case | 1 PCS |
Auxiliary grounding rod（10x150mm） | 4 PCS |
Standard Test wires | 4 PCS (Red 20m; Yellow: 10m; Green: 10m; Black:20m) |
Simple Test wires | 2 PCS (Red 1.6m; Black 1.6m) |
Monitoring Software CD | 1 COPY |
USB Communication Cable | 1 PCS |
Manul/Warranty Card/Certificate | 1 SET |