CEM DT-9979 True-RMS Digital Multimeter

The CEM DT-9979 is a True-RMS digital multimeter designed to offer precise and reliable measurements across a variety of electrical parameters.This multimeter is suitable for a range of applications, including troubleshooting and maintenance in electrical, HVAC, and automotive fields. It offers both hobbyists and professionals a reliable tool for their measuring and testing needs.

The DT-9979 is a professional-grade True RMS Industrial Digital Multimeter that features a 50,000 count full graphics type LCD display with a white backlight. It offers rapid A/D conversion for quick sampling times and high accuracy, as well as built-in data logging and Trend Capture capabilities. This allows for the continuous monitoring of equipment issues without the need for manual supervision.

CEM DT-9979 Key Features

Large 50,000 counts, Full Graphics Type LCD display with white backlight. Multiple sets of measurement information can simultaneously be displayed at the same time.
Voltage (DC/AC), current(DC/AC), resistor, diode, capacitance, frequency and duty cycle measurement
Ability to record data of signals and review Trend Capture curve, monitoring while you work on other project. It plots measurements as a single line to help detect signal anomalies over time; store up to 10,000 recorded events
Log multiple sessions or log data continuously for over 200 hours.
Real Time Clock – for automatic time stamping of saved readings
Expandable meter lets you stay current as new capabilities are added
Allow to save and name the measurements, and also recall them at any time
Min/Max/Average with Time Stamp to record signal fluctuations
Auto zeroing function
Soft keys, scroll buttons much more secondary functions to access in easily
TRMS AC voltage and current for accurate measurements on complex signals or non-linear loads.
Measure up to 10A (20 A for 30 seconds; 10A continuous)
Peak hold function with calibration mode
10MHz Frequency counter and 1MHz duty cycle measurement
IP67 Waterproof and Auto Power Off
Bluetooth interface
Meterbox iMM & cloud service

CEM DT-9979 Specifications

Specifications	DT-9979
Function	Maximum	Max, resolution	Accuracy
Voltage DC	1000V	1μV	±(0.025% + 5)
Voltage AC	1000V	1μV	±(0.3% + 20)
Current DC	10A	0.01μA	±(0.10% + 5)
Current AC	10A	0.01μA	±(0.6% + 5)
Temperature	-50ºC to 1000ºC	0.1ºC	±(1.0% + 2.5ºC)
Resistance	50MΩ	0.01Ω	±(0.05% + 5)
Capacitance	10mF	0.001nF	±(2.0% + 5)
Frequency	10MHz	0.01Hz	±(0.005% + 5)
Diode and Continuity	Yes
PC Interface	Bluetooth
Power Supply	18 hours Li-ion rechargeable battery; AC Adaptor/charger

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Brand

Cem

CEM Corporation Overview

Name: CEM DT-9979 True-RMS Digital Multimeter - mme-ae
Brand: Cem
SKU: 81612

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.