CEM DT-5300 Earth Ground Resistance Testers

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CEM DT-5300 Earth Ground Resistance Testers

The CEM DT-5300 Earth Ground Resistance Tester is a specialized tool designed for measuring the resistance of earth ground connections, an essential aspect of electrical safety in both residential and industrial settings. This device helps ensure that electrical systems are properly grounded, which is crucial for preventing electrical shocks and ensuring that protective devices work correctly during electrical faults.

Its intended uses include measuring ground resistivity and the resistance of earthing used in electrical devices. The other low regular and liquid resistances can be measured using it. Additionally, resistance, voltage DC, and AC may be measured using it.This device is widely used to evaluate earthing installations in electrical traction systems, telecommunication networks, and power-based industries, among other applications.

CEM DT-5300 Key Features

  • Meets IEC10101, CATIII 1000V
  • Large dual display with backlight & Low Battery Indication
  • Test hold function for easy operation
  • Zero Automatic adjustment
  • Sampling Rate: 2.5 times per second
  • Includes 6 “AA” batteries, test leads and a carrying case

CEM DT-5300 Specifications

FunctionRangeMax ResolutionAccuracy
Earth resistance10Ω






±2%rdg ±0.1Ω   ±2%rdg ±3dgts   ±2%rdg ±3dgts
Voltage AC750V1V±1.2%rdg ±10dgts
Voltage DC1000V1V±0.8%rdg ±3dgts
Resistance200kΩ0.1kΩ±1.0%rdg ±2dgts
Continuity TestActive Sound Level: ≤40Ω, Test current ≤200mA
Operating Temp0ºC~40ºC (<80%R.H.)
Storage Temp-10ºC~60ºC (<70%R.H.)
Power Source1.5V “AA” battery x 6
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CEM Corporation Overview

CEM Corporation, founded in 1978, is renowned for its pioneering contributions to scientific instrumentation with a focus on microwave-based technology for laboratory and research applications. The founders—Dr. Michael J. Collins (Chemist), Ronald Goetchius (Electrical Engineer), and Bill Cruse Jr. (Mechanical Engineer)—launched the company with a novel concept for microwave drying that significantly expedited moisture and solids analysis processes from hours down to minutes, which was a groundbreaking improvement at the time.

Product Innovation and Evolution

Over the years, CEM Corporation has expanded its product offerings beyond its original microwave moisture/solids analysis systems. Their portfolio now includes systems for:
  • Acid digestion for elemental analysis
  • Compositional testing of food products
  • Peptide and chemical synthesis
The company's dedication to innovation is reflected in their development of a diverse range of instruments suited for various applications from academic research to industrial quality control.
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