CEM DT-6505 Insulation Tester

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CEM DT-6505 Insulation Tester

The CEM DT-6505 is an insulation tester specifically designed to measure the insulation resistance of electrical wires, cables, and equipment. This device is crucial for ensuring that insulation is performing up to standards, which is essential for the safety and efficiency of electrical systems. The DT-6505 typically features capabilities such as testing voltages that can range from a few hundred to several thousand volts, often including common test voltages like 250V, 500V, and 1000V.

The Insulation and Low Ohm Multimeter is a single, portable, small device that combines a digital insulation tester and a fully functional, True RMS digital multimeter. This allows for optimum adaptability for troubleshooting and preventative maintenance.

CEM DT-6505 Key Features

  • Rugged, utility hard case
  • Auto power off to save battery power
  • True-RMS
  • Data logged
  • Low pass fi lter for accurate measurement of variable frequency drive (VFD) signals
  • CAT III 1000V, CAT IV 600V measurement category
  • Bluetooth interface
  • Save both time and money with Automatic calculation of Polarization Index and Dielectric Absorption Ratio
  • Slim probes designed with test button
  • 200 mA Continuity & Low Ohm range measurement
  • Compare function (pass/fail) for fast repeatitive tests
  • Insulation test voltages 125V, 250V, 500V, 1000V
  • Insulation test: 0.001MΩ to 5000MΩ
  • Auto discharge of voltage test signal
  • Insulation test smoothing reading
  • K-type thermocouple
  • AC 3000A Current test

CEM DT-6505 Specifications

MultimeterMax RangeMax ResolutionBasic Accuracy
DC Voltage1000V0.1V±(0.1% + 4)**
AC Voltage1000V0.1V±(1.0% + 5)**
Low Z AC Voltage600V1mV±(3.0% + 40)
AC+DC Voltage1000V0.1V±(3.0% + 40)
DC Current10A0.001A±(1.0% + 3)**
AC Current10A0.001A±(1.5% + 3)**
AC 3000A Current3000A0.01A±(3.0% + 3)*
Resistance50MΩ0.01Ω±(1.0% + 4)**
Capacitance5000µF0.1µF±(3.5% + 10)**
Frequency50MHz0.001MHz±(0.1% + 1)**
Duty Cycle0.1 to 99.90%0.01%±(1.0% + 2)**
Temperature-50 to 1200°C

-58 to 2192°F



±(1.0% + 2.5°C)

±(1.0% + 4.5°F)

Insulation Tester
Terminal VoltageRangeMax ResolutionAccuracyTest Current
125V(0% ~10%)0.125~5000MΩ0.001MΩ±(2%+10)1mA @load125kΩ**
250V(0% ~10%)0.250~5000MΩ0.001MΩ±(2%+10)1mA @load250kΩ**
500V(0% ~10%)0.500~5000MΩ0.001MΩ±(2%+10)1mA @load1500kΩ**
1000V(0% ~0%)1.000~5000MΩ0.001MΩ±(2%+10)1mA


Low Ohm Meter
RangeResolutionAccuracyMax. open Circuit Voltage
Resistance0.000~5.000Ω0.001Ω±(1.5% + 30)5 ±1V**
5.00~50.00Ω0.01Ω±(1.5% + 3)5 ±1V**
50.0 ~500.0Ω0.1Ω±(1.5% + 3)5 ±1V**
500 ~2000Ω±(1.5% + 5)5 ±1V
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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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