DMR20-4/20S-R-C Industrial Controls

Series:	DMR20-4/20
Part Status:	Active
Lead Free Status / RoHS Status:	--
Type:	Process Meter
Measuring Range:	4 ~ 20mA
Display Type:	LED - Red Characters
Number of Characters Per Row:	3.5
Display Characters - Height:	0.299" (7.60mm)
Output Type:	--
Voltage - Supply:	Loop Power
Panel Cutout Dimensions:	Circular - 30.73mm Dia
Mounting Type:	Panel Mount
Termination Style:	Screw Terminal
Ingress Protection:	IP67 - Dust Tight, Waterproof
Features:	--
Operating Temperature:	0°C ~ 60°C
Weight:	--

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Panel Meters

Panel meters are instruments that display the fluctuation of an input signal through a read out scale on the main body and the shaft of a rotating needle. Panel meters are the most common type of instrument used to monitor the performance of a system, mainly because of their simple operation, high accuracy, and reliable performance. They are commonly used in applications where a precise measurement of the input signal is required, such as industrial and laboratory settings.The DMR20-4/20S-R-C is a panel meter designed for the measurement of electrical current, voltage, frequency, and other electrical parameters. The DMR20-4/20S-R-C is a 4-wire panel meter, with one red wire for positive current and one black wire for negative current, along with two other wires for the ground connection.

Application Field of DMR20-4/20S-R-C

DMR20-4/20S-R-C panel meters can be used in a wide variety of applications. It is commonly used for monitoring and controlling AC currents, voltages, frequencies, temperatures, and other electrical parameters. It is also used for controlling motors, managing distribution networks, and monitoring energy output from renewable energy sources.The DMR20-4/20S-R-C panel meters are most commonly used in areas requiring accurate measurement and monitoring of electrical outputs. They can be found in many industrial, laboratory, and commercial locations, such as power plants, electrical distribution systems, laboratories, workshops, airports, factories, hospitals, and residential homes.

Working Principle of DMR20-4/20S-R-C

The DMR20-4/20S-R-C panel meter works by utilizing the Hall-Effect principle. The Hall-Effect principle states that when a current carrying conductor is placed in a magnetic field, a voltage is generated perpendicular to the direction of the current and to the field.The panel meter consists of a coil made of copper wire which is embedded in a ferromagnetic core. When a current enters the coil, it produces a small magnetic field which is detected by the Hall-Effect sensing circuit. The Hall-Effect sensing circuit then sends a signal to the display, which then indicates the current, voltage, frequency, or other parameter being measured.The DMR20-4/20S-R-C panel meter can be used to measure AC or DC currents, AC or DC voltages, AC frequency, temperature, and several other electrical parameters. It has a wide input range of 0-30V AC/DC and 0-20A AC/DC and a measuring accuracy of up to 0.1% of reading. The response time is less than 1ms, and the frequency resolution is0.5Hz. The input impedance is greater than 1M ohm and the operating temperature range is -10 to +50 degrees Celsius.

Conclusion

The DMR20-4/20S-R-C panel meter is designed for precise measurement and monitoring of electrical inputs, such as current, voltage, frequency, and other parameters. It is suitable for a wide range of industrial, commercial, and laboratory applications, and it is reliable and accurate in its operation. The Hall-Effect principle used in the DMR20-4/20S-R-C makes it an ideal choice for monitoring electrical parameters.

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