Name: CEM DT-391 Digital Clamp Meter - mme-ae
Brand: Cem
SKU: 83357

CEM DT-391 Digital Clamp Meter

The CEM DT-391 digital voltage tester is a user-friendly tool for measuring various voltages both professionally and in the field. This handheld meter has a 6000 LCD screen on the back for easy reading in low light conditions.It offers an impressive range of functions, including AC and DC voltage measurements up to 1000 V, AC current up to 200 A, resistance up to 60 MΩ and capacity up to 6000mF. It supports non-contact voltage test up to 600V, continuous check with 50Ω beep and diode test with 0.35mA current test at 3V.

CEM DT-391 Key Features

Digital display counts 6000
Peak Value & Inrush Current
Display type(Negativity display)
Compact size
Data Hold & MAX/MIN Function
Backlight for button, knob Switch & Flashlight
Low battery indication
17mm Jaw opening
Auto sense Voltage
NCV
Low Z & True RMS
Non contact voltage test

CEM DT-391 Specifications

Function	Max Range	Basic Accuracy	DT-390	DT-391
Voltage DC	1000V	±(0.8% + 3d)	Yes	Yes
Voltage AC	1000V	±(1.0% + 3d)	Yes	Yes
Current AC	200A	±(3.5% + 5d)	Yes	Yes
Resistance	60MΩ	±(3.0% + 5d)	Yes	Yes
Capacitance	6000mF	±(2.5% + 5d)	Yes	Yes
Non-contact Voltage Test	600V	±(2.5% + 5d)	Yes	Yes
LoZ (Low Impedance)	<600V	~3KΩ	–	Yes
Continuity Check	Buzzer at 50Ω	–	Yes	Yes
Diode Test	0.35mA 3V

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Brand

Cem

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.

Datasheet

Specifications

Function	Max Range	Basic Accuracy	DT-390	DT-391
Voltage DC	1000V	±(0.8% + 3d)	Yes	Yes
Voltage AC	1000V	±(1.0% + 3d)	Yes	Yes
Current AC	200A	±(3.5% + 5d)	Yes	Yes
Resistance	60MΩ	±(3.0% + 5d)	Yes	Yes
Capacitance	6000mF	±(2.5% + 5d)	Yes	Yes
Non-contact Voltage Test	600V	±(2.5% + 5d)	Yes	Yes
LoZ (Low Impedance)	<600V	~3KΩ	–	Yes
Continuity Check	Buzzer at 50Ω	–	Yes	Yes
Diode Test	0.35mA 3V