HT Italia GEO 416 Earth Resistance and Ground Resistivity Tester with Data Download



GEO416 has been developed to measure earth resistance with 2 wires, 3 wires and 4 wires by voltammetric method and ground resistivity. These values are extremely important while designing earth systems.

The 2-wire method, by taking advantage of appropriate external masses as a reference (metal surfaces, tubes, neutral conductor, etc.), is particularly useful in private environments where, because of logistic problems, it is not possible to use the 3-wire method. The device allows carrying out measurements with a wide measuring range (up to 50kOhm) with an efficient internal compensation of the disturbance effects found on the installations. GEO416 is provided with an internal memory for saving measurements and with an optical/USB interface for transferring measured data onto the PC


logopdf (2) GEO 416 Data Sheet

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The HT Italia GEO416 is a innovative earth ground resistance tester designed to performing Earth Resistance measurements with 3-pole standards method typically in industrial electrical installations environments which consists of single probes and more or less wide earth networks. This meter can perform also 2-pole measure (where auxiliary metal parts are available) extremely important in civil environments where 3-pole method application is not possible for logistical reasons. The earth ground resistance tester GEO416 performs tests with a high measurement range (up to 50kOhm) with a test current at high frequency in order to consider and eliminate noise voltages disturb on installation. Earth Resistivity test measure with 4-wire method it’s also very useful on preliminary calculation of earth installation dimension. A contextual help selectable by user it’s available on meter for each functions. The model can save each test result inside memory and can transfer saved dates to PC through optical / USB interface with dedicated Windows software.


  • 2-pole Earth Resistance
  • 3-pole Earth Resistance
  • 4-pole Earth Resistivity
  • High measurement range (50kOhm)
  • Noise voltage measure
  • Automatic calibration of test cables resistance
  • Memory for saving tests
  • Backlight
  • Optical /USB PC interface

What’s In The Box

  • KITTERRNE : Set 4 cables + 4 metal probes
  • COC4-UK : Set of 4 alligator clips
  • BORSA2000N : Carrying bag for accessories
  • ISO9000 calibration certificate
  • User manual


HT Instruments GEO 416 Specifications
Electrical Specifications
Accuracy in indicated as ± (% of reading + number of digits) at 23°C ± 5°C ; <60%HR
Earth Resistance 3-wire and 2-wire systems
Range (Ω) Resolution (Ω) Accuracy
0.01 ÷ 19.99 0.01 ±(2.5%rdg + 2dgt)
20.0 ÷ 199.9 0.1
200 ÷ 1999 1
2.00 ÷ 19.99k 0.01k
20.0 ÷ 49.9k 0.1k
Test current: ≤12mAAC
Open circuit voltage: ≤25V ACTRMS
Test frequency: 77.5Hz ± 1Hz
Rprobes: ≤50kΩ
Earth Resistivity ρ with 4-wire method
Range (Ωm) Resolution (Ωm) Accuracy
0.06 ÷ 19.99 0.01 ±(2.5%rdg + 2dgt)
20.0 ÷ 199.9 0.1
200 ÷ 1999 1
2.00 ÷ 19.99k 0.01k
20.0 ÷ 199.9k 0.1k
0.20 ÷ 3.15M 0.01M
Test current: ≤12mAAC
Open circuit voltage: ≤25V ACTRMS
Test frequency: 77.5Hz ± 1Hz
Probe distance range: 1÷10m
Rprobes: ≤50kΩ
Noise Voltages
Range (V) Resolution (V) Accuracy
460 1 ±(2.0%rdg + 2dgt)
General Specifications
Display, Memory, Serial Interface:
Features: Custom LCD with backlight
Visible area: 73×65 mm
Memory: 999 locations
Serial interface: RS-232 /USB
Power Supply:
Batteries: 6 batteries 1.5V type LR6-AA-AM3-MN 1500
Low batteries indications: battery symbol at display
Batteries life: about 500 test
Mechanical Features:
Dimensions: 222 (W) x 162(L) x 57(D) mm
Weight (included batteries): about 1kg
Working Environmental Conditions:
Reference temperature: 23°C ± 5°C
Working temperature: 0° ÷ 40°C
Allowed relative humidity: <80%HR
Storage temperature: -10 ÷ 60°C
Storage humidity: <80%HR
General Reference Standards:
Safety of measuring instruments: IEC / EN61010-1
Safety of accessories: IEC / EN61010-031
Product type standard: IEC / EN61557-1, IEC / EN61557-5
Insulation: double insulation
Pollution degree: 2
Overvoltage category: CAT III 240V to ground, 415V between inputs
Max altitude: 2000m
EMC: EN61326-1(1998) + A1(1999)


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