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T.M.I.

Test and Measurement Instruments C.C.

          CK 1985/007464/23

“Tomorrow’s Instruments Today”  —  “For Good Measure” ®

TMI, Established—1982

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Earth Resistance Meters, Ground Resistance

Earth Resistance

Part No:  ET-3000 

19,99 / 199,9 / 1999 ohms, Earth Voltage 0 to 199,9V Earth Resistance and Earth Voltage Measurements, Data-Hold, Durable Housing Plastic

Lutron ET-3000 Digital Earth Resistance Tester

Lutron

Lutron ET-3000 Digital Earth Resistance TesterLutron ET-3000 Digital Earth Resistance Tester

Notes on Earth Resistance or Ground Resistance Meters.

Ground resistance testers are devices that are used to measure and test electrical grounding systems. Grounding enables optimum electrical continuity between conducting objects and earth. Effectively grounded equipment is permanently connected to earth through a ground connection with a sufficiently low impedance and sufficient current- carrying capacity that a ground fault current cannot cause dangerous voltage buildups.

Ground resistance testers can be to take several different measurements, including grounding system resistance, insulation resistance, earth continuity, current leakage, and ground bond. Grounding system resistance and insulation resistance are common measurements made with ground resistance testers. Grounding system resistance testers are used to measure grounding systems for construction projects and roads, telecommunications projects, and other applications. Insulation resistance testers measure the resistance of insulators or insulation. 

Ground resistance testers can be used to measure earth continuity, current leakage, and ground bond. Earth continuity devices are used to test electronic instruments and appliances. Current leakage testers measure the amount of current that leaks into the ground. These devices are important for maintaining the safety of instruments that come into contact with people. Ground-bond ground resistance testers are used in ground bond or high-current continuity testing. These tests are performed to confirm the electrical integrity of an instrument. Other types of ground resistance testers are also available.

Most ground resistance testers have an analog or digital display, or an LED indicator. Analog meters display values on a dial, typically with a needle that moves when a signal is applied. Digital meters provide a numeric reading. Light emitting diode (LED) and liquid crystal display (LCD) are common types of digital displays. LED indicators use a light to indicate that a test is occurring. In some models, the LED light blinks on and off throughout the test.

Ground resistance testers come with several different interfaces. Choices include GPIB, RS232, printer port, scanner port, and print out. General-purpose interface bus (GPIB) is designed to connect computers, peripherals, and laboratory equipment. RS232 interfaces for ground resistance testers are used for serial communications between instruments and computers. Printer port devices have a connector or port that is designed to interface with a printer. Scanner ports are similar to printer ports, but are designed to interface with a scanner. Another common interface for ground resistance testers is a print out. Print outs are hardcopies of formatted data collected during testing. Other interface types for ground resistance testers are also available.

Part No:  2720ER  

Digital Earth Resistance Tester. Measures Earth Voltage. 2mA Measuring current measures Earth Resistance without tripping Earth Leakage. Data Hold.

SEW

SEW 2720 Earth Resistance Tester
SEW 2720 Earth Resistance Tester

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Earth Resistance Meters

SEW 2705ER Analog Resistance tester

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30th anniversay of Test and Measurement Instruments c.c.TMI Monthly Specials

This Month’s Special

Thermography—Thermal Imager— Infrared Camera.

FLIR E5 (120 x 90 Pixels)

 

R 21,150.00 + VAT

while stocks last. 

 

FREE Thermography

Introductory Course

Included with Lunch.

 

One Day Course.

Click  Ex-Series  for Spec.

Also: Thermal Imagers

FLIR E4 Thermal Camera

Part No:  4235ER  

Digital Earth Resistance and Resistivity Tester. Four Wire, Auto C Spike and P Spike Check. Earth Testing at 20, 200, 2000 Ohms. 2 , 3, or 4 wire test. Memory of 200.

SEW

SEW 4235ER Earth Resistance Tester
SEW 4235ER Earth Resistance TesterSEW 4235ER Earth Resistance TesterT+M Instruments Lutron InstrumentEZ Digital Fluke Instrument Time Group High Time TechnologyFlir Infrared ThermometryITC Training Centre Thermography Courses

Ph:           +27 (011) 683 4365

Fax:          +27 (011) 683 4461

E-mail:     t.m.i@iafrica.com

www.instrumentsgroup.co.za

 

 

 

 

Physical   Address:              

3 Angelica Ave,

Glenvista, Johannesburg, 2091

SOUTH AFRICA

 

Postal Address:

P.O. Box 1416,

Southdale,

Johannesburg, 2135,

SOUTH AFRICA

011 683 4365
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Digital Earth Resistance Clamp Testers. Ground Resistance from 0.05Ohm to 1500 Ohms. True RMS Ground Leakage Current 0.5A to 35A. Advanced Bluetooth® on DET24C.

Megger DET14C and DET24C Earth Leakage Clamp Testers with Bluetooth.
Megger DET14C and DET24C Earth Leakage Clamp Testers with Bluetooth.Megger DET14C and DET24C Earth Leakage Clamp Testers with Bluetooth.

Megger

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Accessories    

Adaptors

Air Quality Meters

Alcohol Breath Tester

Alignment Equipment

AM & FM Signal Generators

Anemometers

Appliance Testers

Audio Generators

Audio Impedance Meter

Automation

Automotive testers

Balances

Barometers

Batteries for Equipment

Battery Analyser /

Battery Desulphator Charger

Bench DMM’s

Borescopes

Bread Boards

Breath  Alcohol Tester

Cable Fault Locators

Cable Height Meter

Cable Testers

Calibrators

Capacitance meters

Carbon Dioxide meters

Carbon Monoxide meters

Car Testers

Caster / Camber Gauges

Chlorine Meter

Clamp meters

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Colour Analysers

Combination Combo Meters

Concrete Testing

Conductivity  / TDS meters

Contact Tachometers

Continuity Tester

Controller / Monitors

Corner Weight Scales

Current Meters, Bench Type

Data Acquisition Systems

Data Loggers

Decade Boxes

Dew Point Meters

Digital Vernier Calipers

Digital Scales

Digital Multimeters , DMMs

Dissolved Oxygen Meters

Distance Meters

Drain Pipe Camera

Drug Testing

Dust Monitoring

Earth resistance meter

Earth Leakage Tester, ELCB

Educational Systems

Electrical Connectors

EMF tester

Eye Tracker

Field Strength Meters

Force gauge

Frequency Counter

Function Generators

GSM Controller

Gas leak detector

Green Hybrid Power

Grid Dip Meter

Hardness tester

Helicopter IR Gimbals

HV(High Voltage) Testing

Humidity meter

Hygrometers

Inductance Decade Box

Infrared Thermometers

Infrared Thermography

Inverters

Insulation tester

Laser Levelling

LCR meter

Leakage Clamp Meters

Logic Analyser

Logic Probes/Pulsers

Lux meter, (Light meter)

Manometer

Metal Detector

Micrometer

Micro-Ohm Meters

Microwave Leakage

Milliohm meter

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Moisture meter

Multimeter

Night Vision Equipment

Optical Gas Imaging OGI Thermal Cameras

ORP meter

Oscilloscopes

Oxygen Meters

Pattern generators

Panel meter

PC-Based Instruments

Pen type tester

pH Meters and Probes

Pipe Inspection Camera

Photo Tachometer

Power analyzer

Power clamp meter

Power Supplies

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3 Phase Rotation Tester

Pressure Transducer

Probes, Oscilloscope

Protection Relay Testing

Proximity sensor

Racing Equipment

RCCB tester

RCD, RCCB Testers

Radiation Testers

Refractometers

Renewable Energy

RF Generators

Resistance Decade Box

Roughness tester

Rheostats

Salt meter

Satellite Testing Equipment

Security

Scales, Digital

Shore Hardness Tester

Simulators

Soil Moisture Meters

Soil pH meter

Solar Power Meter

Software

Sound level meter

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Student Bench Meters

Stun Guns

SWR / RF Power Meters

Tachometer

TDS / Conductivity Meters

Test Leads

Thermal Imagers

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Thermometer

Thermography Courses

Thickness Testers

Tone Generator/ Tracer

Torque meter

Torque wrench

Transformer Testing

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TV & Satellite Meters

Turbidity Meter

Ultrasonic Flaw Detector

Ultrasonic Thickness

UV Corona & IR Cameras, Combined

UV light meter

Vacuum meter

Variable Transformers

Verniers, Micrometers

Vibration meter

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Watt meter

Water Tester

Water Testing Meters

Weather Station

Vacuum/Pressure meter

Voltmeters, Bench Type

Voltage Detectors

Voltage Regulators

5 Way® Binding Posts

Voltage Stabilisers

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T + M®                      

Lodestar

ElektroPhysik        

Megger         

Time Group

TECPEL

Danatronics

Extech

Superior Electric

T+M VERYTEK

S.E.W. Standard Electric Works

ElektroPhysik
Promax Electronics Lodestar Electronics Acute PC-Based Instruments from Test andMeasurement Instruments C.C.Intercomp "For any Measure"MSR Electronics Superior Electric PowerstatK and H EducationalSEW InstrumentsRishabh LogoDanatronics LogoYokogawa Instruments T+M VERYTEK range of test and meaurement instrumentsRohde and ShwarzTMI PagerankMegger Test Instruments and Equipment, Megger South Africa, Megger SA.Extech Test and Measuring InstrumentsHurleyIR Military Night Thermal Cameras and GimbalsIntoximeters Breath Alcohol Testers