VKCR3100C Earth Resistance/Soil Resistivity Tester

1. Import FFT (fast fourier transform) technology, AFC (automatic frequency control) technology, with unique anti-interference ability and environment adaptability, with strong retest consistency.

2. Packing with waterproof protection case, which is waterproof, crash proof, anti-drop and durable, and equip with the large-capacity rechargeablelithiumbattery pack, especially suitable for using at outdoor construction site.

3. The host equip with large LCD, with white backlight and bar graph indication which can reading clearly and obvious. And the tester has audibleandvisual alarm function, overload protection function, automatic shutdown and data upload function.

4. Support Bluetooth communication function of Android system, after installing APP, can use the mobile terminal to operate testing and readingthetest records, with the good and new experience.

1.Basic error and performance indicator under reference condition

Measurement Function	Measuring range	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=2πaRa:1m~100m;π=3.14)	0.01Ωm
	100.0Ωm~999.9Ωm		0.1Ωm
	1000Ωm~9999Ωm		1Ωm
Soil Resistivity (ρ)	10.00kΩm~99.99kΩm	(ρ=2πaRa:1m~100m;π=3.14)	10Ωm
	100.0kΩm~999.9kΩm		100Ωm
	1000kΩm~9000kΩm		1kΩm
Earth Voltage	AC 0.0~600V	±2%rdg±3dgt	0.1V

2.General Specification

Power Supply	DC 7.4V 2600mAh rechargeable lithium battery, the battery is fully charged about 8.4V
Backlight	Controllable white screen backlight, suitable for use in dim place
Display Mode	4-digit max LCD display, white screen backlight
Measurement Instruction	The LED flash during the measurement, the LCD count backward, and the progress bar chart indicate
LCD Display Domain	124mm×67mm
Measurement Range	Earth resistance: 0.00Ω~30.00kΩ
	Soil Resistivity: 0.00Ωm~9000kΩm
	Earth Voltage: 0V~600V
Measurement	Precision four, three-wire measurement, simple two-wire measurement method to measure earth resistance
Measuring Method	Earth resistance: rated current transformer method, measuring current 20mA Max Soil resistivity: quadru pole method (Wenner method) Earth voltage: average rectification (between P(S)-ES interface)
Test Frequency	128Hz/111Hz/105Hz/94Hz(AFC)
Test Current	＞20mA(Sine wave)
Open Circuit Test Voltage	AC 40V max
Test Voltage Waveform	Sine wave
Electrode Spacing Range	Range can be set 1m~100m
Measurement Range Gear Shift	Earth Resistance: 0.00Ω~30.00kΩ Fully automatic shifting
Measurement Range Gear Shift	Soil Resistivity: 0.00Ωm~9000kΩm Fully automatic shifting
Standard Test Line	4 pieces: red 20m, black 20m, yellow 10m, green 10m each 1 piece
Simple Test Line	2 pieces: red 1.6m, black 1.6m each 1 piece
Auxiliary Earth Rod	4 pieces:φ9mm×230mm(about 935g)
Measurement Time	Earth voltage: about 3 times/second
Measurement Time	Earth resistance, soil resistivity: about 15 seconds/time
Line Voltage	Measurement below AC 600V
Communication Interface	With USB interface, software monitoring, storage data can be uploaded to the computer, saved and printed
Communication Line	1 USB communication line, 1.5m long
Memory	300 groups, flashing "FULL”symbol indicates that the storage is full
Data Hold	Data holding function: “HOLD" symbol display
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	300 groups, flashing "FULL”symbol indicates that the storage is full
Alarm Threshold Setting Range	Resistance:0Ω~9999Ω,voltage:0.0V~600.0V
Automatic Shutdown	Automatically shut down after 10 minutes of power on
Battery Voltage	When the battery voltage drop to about DC 7.2V±0.1V, the low battery voltage symbol is displayed to remind the meter that it need to be charged.
Working Current	Standby: about 20mA (backlight off)
	Power on when turn on backlight: about 45mA (turn off the backlight 25mA)
	Measurement: about 100mA (backlight off)
Tester Size	280mm×260mm×160mm
Weight	Tester: About 2306g(include battery);total weight: about 6.3kg(include accessory)
Overload Protection	Measuring earth resistance: AC 280V/3 seconds between C(H)-E、P(S)-ES ports
Protection Level	IP65(closing)
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
Working Temperature & Humidity	-10℃~40℃; below 80%RH
Storage Temperature & Humidity	-20℃~60℃; below 70%RH