CEM DT-985 True-RMS Digital Multimeter

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CEM DT-985 True-RMS Digital Multimeter

The CEM DT-985 is a True-RMS digital multimeter, which is designed to provide highly accurate readings for both sinusoidal and non-sinusoidal waveforms. This feature makes it particularly useful in environments where the electrical signals are complex or distorted, such as in industrial applications involving motor drives or variable frequency drives.

Like most digital multimeters from CEM, the DT-985 likely offers a range of measurement functions, including voltage, current, resistance, continuity, diode testing, and perhaps capacitance and frequency measurements. Its True-RMS capability enhances its reliability for troubleshooting electrical problems accurately.

CEM DT-985 Key Features

  • LCD with analog bargraph & backlight
  • 10kHz bandwidth (voltage/current),100kHz
  • AC True-RMS measurements
  • Low pass filter (VFD)
  • A/D convert fast sampling time
  • Peak capture (records transients as fast as 500μs)
  • Min/Max/Average with Time stamp (records signal fluctuations)

CEM DT-985 Specifications

FunctionMaximumMax. ResolutionBasic Accuracy985987A987BT987H
Voltage DC1000V10mV±(0.9% + 5)****
Voltage AC1000V10mV±(1.0% + 5)****
Current DC10A0.01μA±(1.5% + 5)****
Current AC10A0.01μA±(2.5% + 5)****
Resistance60MΩ10 mΩ±(1.2% + 5)****
100 mΩ****
Temperature760ºC/1400ºF0.1ºC/ºF±(2.0% + 3º)****
Capacitance10mF0.01nF±(2.5% + 5)****
Frequency10MHz0.01Hz±(1.0% + 2)****
Diode and ContinuityYes
Power Supply1.5Vx4 “AAA” batteries


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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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