300K Ohm Earth Resistance Tester with Double Clamp

Features: 
1.The two-, three- and four-wire,selection method, and double clamp method to measure earth resistance
2.The uniquely designed socket indicator light accurately indicate the position of the socket to avoid operating error.
3.The 12 gear function selection knob,various testing methods are shown in detail, making operation simple and fast.
4.The tester adopt FFT (fast Fourier transform) technology and AFC (automatic frequency control) technology. It has unique anti-interference ability and environmental adaptability, and has strong consistency in repeated tests.
5.The host has max LCD display, white screen backlight, and bar chart indication, which is clear.
6.Alarm function, the alarm threshold can be set.
7.Memory, 200 sets of data storage.
8.USB interface, data upload function.
9.Bluetooth Communication

Specifications

Measurement Function Measuring Range Accuracy Resolution
Two-Three-Four-wire Method To Measure Earth Resistance (R~) & DC Resistance (R—) 0.000Ω~9.999Ω ±2%rdg±0.05Ω 0.001Ω
10.00Ω~29.99Ω ±2%rdg±5dgt 0.01Ω
30.0Ω~299.9Ω ±2%rdg±3dgt 0.1Ω
300Ω~2999Ω ±2%rdg±3dgt
3.00kΩ~300.00kΩ ±4%rdg±3dgt 10Ω
Selection Method To Measure Earth Resistance (R~) 0.000Ω~9.999Ω ±2%rdg±0.05Ω 0.001Ω
10.00Ω~29.99Ω ±2%rdg±5dgt 0.01Ω
30.0Ω~299.9Ω ±2%rdg±3dgt 0.1Ω
300Ω~3000Ω ±2%rdg±3dgt
Double Clamp Method To Measure Earth Resistance (R~) 0.01Ω~0.99Ω ±10%rdg±5dgt 0.01Ω
1.0Ω~29.9Ω 0.1Ω
30Ω~100Ω
Soil Resistivity(ρ) 0.00Ωm~99.99Ωm Depending on the measurement accuracy 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 1kΩm
Earth Voltage (V~) 50Hz/60Hz AC 0.0V~100.0V ±2%rdg±3dgt 0.1V
Earth Current (A~) 50Hz/60Hz AC 0.00mA~600.0A ±2%rdg±3dgt 0.01mA


2.General Specification

Power Supply DC 7.4V 2600mAh rechargeable lithium battery, the battery is fully charged about 8.4V
Display Mode 4-digit max LCD display, white screen backlight
Measurement Instruction LED flashing indication during measurement, LCD countdown display
LCD Size 128mm×75mm;LCD Display area: 124mm×67mm
Backlight Controllable white screen backlight, suitable for use in dim place
Measurement Method DC Resistance DC resistance bipolar method
DC resistance quadrupole method
Earth Resistance
 
Earth resistance bipolar method
Earth Resistance Three-electrode method
Earth resistance Quadrupole method
Earth resistance single clamp Three-electrode method (selection method)
Earth resistance single clamp quadrupole method (selection method)
Earth resistance double clamp method
Soil resistivity (Wenner method)
Earth Current Current clamp measurement
Earth Voltage Average value rectification
Test Frequency 128Hz/111Hz/105Hz/94Hz(AFC)
Short  Circuit Test Current AC 250mA max
Open Circuit Test Voltage AC 40V max
Electrode Spacing Range 1m~100m
Test Line 4 PCS: red 20m, black 20m, yellow 10m, green 10m each 1 piece
Simple Test Line 2 PCS: red 1.6m, black 1.6m each 1 piece
Auxiliary Earth Rod 4 PCS:φ9mm×230mm (about 696g)
Current Clamp 2 PCS:blue and black plug, 1 red and black plug each
Current Clamp Caliber φ70mm
Current Clamp Size 223mm×120mm×39mm
Measurement Time AC current: about 2 times/second; earth voltage: about 2 times/second; earth resistance: about 7 seconds/time
Line Voltage Measurement below AC 600V
Communication Method Bluetooth module, USB interface, storage data can be uploaded to the computer through software
Data Hold When Data holding : “HOLD" symbol display
Memory 2000 groups, flashing "FULL”symbol indicates that the storage is full
Data Access Data access function: “READ" symbol display
Overflow Display Over-range overflow function: “OL" symbol display
Interference Test Automatically identify the interference signal, and the “NOISE” symbol indicates when the interference voltage is higher than 5V
Auxiliary Earth Test With auxiliary earth resistance value test function,0.00KΩ~30kΩ(100R+rC<50kΩ,100R+rP<50kΩ)
Alarm Function When the measured value exceed the alarm set value,“Du-Du-Du-" Alarm prompt
Alarm Threshold Setting Range Resistance: 0Ω~9999Ω, voltage: 0.0V~100.0V, current: 0.000A~9.9999A
Automatic Shutdown Automatically shut down after 15 minutes of power on
Working Current Backlight: 25mA Max (separate backlight power consumption); standby: 25mA Max (the backlight is turned off after the tester turning on); measurement: 150mA Max (the backlight turn off)
Tester Size 280mm×260mm×160mm
Weight Tester: About 1799g(include battery);total weight: about 6.13kg(include accessory)
Battery Voltage When the battery voltage drop to about DC 7.2V±0.1V, the low battery voltage symbol is displayed to remind that the battery need to be replaced.
Protection Level IP65(closed)
Overload Protection Measuring earth resistance: AC 280V/3 seconds between C(H)-E、P(S)-ES ports
Insulation Resistance Above 20MΩ(500V between the circuit and the housing)
Withstand Voltage AC 3700V/rms(Between the circuit and the housing)
Electromagnetic characteristics IEC61326(EMC)
Suitable Safety Regulation IEC61010-1(CAT Ⅲ 300V, CAT IV 150V, pollution level 2);IEC61010-031;
IEC61557-1(Earth resistance);IEC61557-5(Soil resistivity);JJG 366-2004(Earth Resistance Tester);JJG 1054-2009(Clamp Earth Resistance Tester)
Working Temperature & Humidity -10℃~40℃; below 80%RH
Storage Temperature & Humidity -20℃~60℃; below 70%RH

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300K Ohm Earth Resistance Tester with Double Clamp

  • Brand: ROKTOOLS
  • Product Code: EGRT-10302
  • Availability: 2-3 Days
  • $680.00


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