CEM DT-9989 True-RMS Digital Multimeter

The CEM DT-9989 is a True-RMS (Root Mean Square) digital multimeter designed for accurate electrical measurements. It offers various functionalities suitable for professionals, including the ability to measure voltage, current, resistance, capacitance, frequency, and temperature. The device also features a waterproof and dustproof design, making it durable and reliable in various environments.

True-RMS measurement capability means the DT-9989 can accurately measure both pure waveforms and non-linear loads, which is essential for applications in industrial or commercial environments where power distortions can occur. Additionally, this multimeter often includes a graphical LCD display that helps in analyzing data directly on the device, and it may come with connectivity options like Bluetooth for data logging and analysis via software on other devices.

CEM DT-9989 Key Features

Large 50,000 count 320 x 240 TFT color LCD display
20MHz/50MS/s bandwidth/Real time sample rate
Logging function with Trend Capture for easy review of logged data
Bluetooth PC interface for easy data transfer & accuracy calibration
100kHz bandwidth (voltage/current)
AC, AC+DC true-RMS measurements
0.025% DCV accuracy with Fully PC Calibration
Saves measurements, records events and trends
20 Times/sec. A/D convert fast sampling time
Peak capture (records transients as fast as 250μs)
Min/Max/Average with Time stamp (records signal fluctuations)
Moto winding and low ohm (50Ω) measurement range
Low pass filter
IP Rating 67 & CATIII 1000V/CATIV 600V
Bluetooth interface to smartphone / PC.
Meterbox iMM & cloud service

CEM DT-9989 Specifications

Specifications	DT-9989
Oscilloscope Functions
Display Size	3.5″ color LCD; 320 x 240 pixels
Bandwidth	20MHz
Real time sample rate	50MS/s
Risetime	10ns
Channels	1
Vertical Sensitivity	50mV to 200V/div
Vertical Resolution	8 bits
Trigger Mode	Free Run, falling edge, rising edge
Trigger Source	Internal
Trigger Coupling	AC/DC
Input impedance	1MΩ/200pF
Max Input Volatage	1000V(peak)
Cursor Measurement	Voltage and time/ Frequency
True RMS Multimeter Functions
Function	Maximum	Max,resolution	Accuracy
Voltage DC	1000V	1μV	±(0.025% + 5)
Voltage AC	1000V	1μV	±(0.4% + 40)
Current DC	10A	0.01μA	±(0.15% + 2)
Current AC	10A	0.01μA	±(0.6% + 5)
Temperature	-50ºC to 1000ºC	0.1ºC	±(1.0% + 2.5ºC)
Resistance	50MΩ	0.01Ω	±(0.05% + 2)
Capacitance	10mF	0.001nF	±(1.0% + 5)
Frequency	10MHz	0.01Hz	±(0.005% + 1)
Diode and Continuity	Yes
PC Interface	Bluetooth
Power Supply	6 hours Li-ion rechargeable battery; AC daptor/charger

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Brand

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CEM Corporation Overview

Name: CEM DT-9989 True-RMS Digital Multimeter - mme-ae
Brand: Cem
SKU: 81403

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.