CEM DT-9978 Digital Multimeter

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CEM DT-9978 Digital Multimeter

The CEM DT-9978 is a digital multimeter designed for measuring various electrical properties such as voltage, current, and resistance. It is typically used for industrial and laboratory applications, offering features like true RMS measurements, waterproof and dustproof casing, and a wide range of testing capabilities including capacitance, frequency, and temperature.

This model includes advanced features such as Bluetooth connectivity, which allows it to communicate with smartphones or computers for data logging or remote monitoring. Its robust design makes it suitable for harsh environments, and it typically has a large, easy-to-read display, enhancing usability in various working conditions.

CEM DT-9978 Key Features

  • 3.5” LCD Display Count
  • True RMS and Auto Range
  • Bandwidth (Hz) 100KHz
  • Duty Cycle
  • Diode
  • Continuity Buzzer
  • Data Hold
  • Relative Mode
  • Data logging
  • Double Backlight

CEM DT-9978 Specifications

Max. RangeBest Accuracy
DC Voltage (v)1000V±(0.025% + 5)
AC Voltage (v)1000V±(0.4% + 40)
DC Current (A)10A±(0.15% + 2)
AC Current (A) 


±(0.6% + 5)
Resistance (Ω)50MΩ±(0.05% + 2)
Capacitance (F)10mF±(1.0% + 5)
Frequency (H Z )10M H Z±(0.005% + 1)
Temperature-40 ℃~1000 ℃±(1.0% + 2.5º)
Temperature-40 o F~1832 ℉±(1.0% + 2.5º)
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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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