Portable Digital Earth Resistance Tester Soil Resistivity Tester

Introduction

EGRT-1040 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.

EGRT-1040 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.

Features:

4-pole measurement, 3-pole measurement, simple 2-pole measurement

Earth Resistance

Soil Resistivity

Earth Voltage

RS232 Interface

Data Storage

Overflow Display

Auxiliary Earthing Test

Alarm Function

Overload Protection

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 )
MeasurementRange	Earth Resistance: 0.00Ω-30.00kΩ
MeasurementRange	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) Earth Voltage: average rectification(between P(S)-ES)
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 DistanceRange	Can be set 1m-100m
Shift	Earth Resistance: 0.00Ω-30.00kΩ, automatic shift
Shift	Soil Resistivity: 0.00Ωm-9000kΩm, automatic shift
Backlight	Blue screen backlight, suitable for dim places
Display Mode	4-digital super-large 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 rods: Φ10mm×150mm
Measuring Rate	Earth voltage: about 3 times/second
Measuring Rate	Earth resistance, soil resistivity: about 5 seconds/time
Measuring Times	Over 5000 times (Short-circuit test, interval time should be at least 30 seconds)
Line Voltage	below AC 600V
RS232 Interface	Possess RS232 interface, software supervision, 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 Access	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)
WorkingTemperature & Humidity	-10C-40C, below 80%rh
Storage temperature & humidity	-20C-60C, 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 (CATiii 300V.CAT IV 150V.,Pollution 2), IEC61010-031, IEC61557-1 (Earth resistance), IEC61557-5 (Soil resistivity), JJG 366-2004

3. 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		1kΩm
Earth Voltage	AC 0.0-600V	±2%rdg±3dgt	0.1V

Accessories

Tester	1 PC
Tester Bag	1 PC
Auxiliary Earthing Rod	4 PCS
Standard testing Wire	4 wires: each for red 20m, black 20m, yellow 10m, and green 10m
Simple testing Wire	2 wires: each for red 1.6m and black 1.6m
Zinc-manganese Dry Battery	6 PCS (R14S 1.5V)
Monitoring Software Disk	1 Copy
RS232 Communication Cable	1 PC
Manual/Warranty Card/Qualification Certificate	1 Copy