Autonics MT4W-DV-40 DC Voltmeter Digital Panel Meter
The Autonics MT4W-DV-40 is a digital panel meter designed for accurate DC voltage measurement in industrial control panels and automation systems. It features a 4 digit LED display, multiple DC voltage input ranges up to 500 VDC, HI, GO and LO relay outputs, and a DC 4 to 20 mA transmission output. It is suitable for voltage monitoring, limit indication, alarm applications, PLC systems, control panels, test equipment, and industrial machinery.
Customize
Share :
A. Product Overview
The Autonics MT4W-DV-40 is a DC voltage digital panel meter from the MT4W series. It is designed to measure, display, monitor, and transmit DC voltage values in industrial electrical and automation applications.
The meter provides a clear 4 digit 7 segment LED display with a character height of 14.2 mm. Its display range extends from minus 1999 to 9999, allowing measured values to be displayed clearly on control panels.
The MT4W-DV-40 supports several DC voltage input ranges, making it suitable for both low voltage signal monitoring and higher DC voltage measurements.
Key Specifications
Model: MT4W-DV-40
Product type: Digital panel meter
Measurement: DC voltage
Display: 4 digit 7 segment LED
Character height: 14.2 mm
Maximum display range: minus 1999 to 9999
Input ranges: 0 to 500 VDC, 0 to 100 VDC, 0 to 50 VDC, 0 to 10 VDC, 0 to 5 VDC, 0 to 1 VDC, 0 to 250 mVDC and 0 to 50 mVDC
Power supply: 100 to 240 VAC, 50 or 60 Hz
Main output: HI, GO and LO relay outputs
Transmission output: DC 4 to 20 mA
Sampling cycle: 50 ms
A to D conversion: Sigma Delta ADC
External hold function: Available
Front protection: IP56
Operating temperature: minus 10 to 50 degrees Celsius
Panel size class: approximately 96 by 48 mm
B. Working Principle
The Autonics MT4W-DV-40 works by receiving a DC voltage signal from the connected electrical circuit, sensor, power supply, battery system, machine, or other voltage source.
The operation can be understood in the following sequence:
A DC voltage signal is connected to the selected input terminals.
The meter receives the incoming DC voltage.
Its internal analog to digital conversion circuit converts the analog voltage into digital measurement data.
The measured value is processed internally.
The resulting voltage value is displayed on the 4 digit LED display.
The meter continuously compares the measured value with programmed HI, GO and LO settings.
Corresponding relay outputs can operate according to the configured comparison conditions.
The measured process value can also be retransmitted as a DC 4 to 20 mA signal for another monitoring or control device.
The 50 ms sampling cycle allows the meter to monitor changing DC voltage signals quickly enough for many industrial applications.
HI, GO and LO Comparison
The relay outputs can be used to classify the measured voltage according to configured limits.
For example:
HI can indicate that voltage has exceeded the upper limit.
GO can indicate that voltage is within the required operating range.
LO can indicate that voltage has dropped below the lower limit.
This makes the MT4W-DV-40 useful for more than simply displaying voltage. It can also become part of an alarm, monitoring, inspection, or control system.
C. Why Is the Autonics MT4W-DV-40 Used?
The MT4W-DV-40 is used when operators need a clear panel mounted indication of DC voltage along with control and monitoring outputs.
It can perform several functions from a single instrument:
Measure DC voltage
Display the measured voltage
Monitor upper and lower voltage limits
Provide relay outputs
Generate alarm signals
Provide DC 4 to 20 mA retransmission
Send voltage information to another control system
Help operators monitor machine conditions
Provide visual indication directly on a control panel
Common Applications
The MT4W-DV-40 can be used for:
Industrial control panels
Automation panels
PLC panels
Battery monitoring systems
DC power supply monitoring
Machine control panels
Electrical testing equipment
Production machinery
Testing and inspection systems
Renewable energy equipment
DC motor systems
Process automation
Laboratory equipment
Original equipment manufacturer machines
Electrical distribution systems
Research and development equipment
D. Suitable Buyers
The Autonics MT4W-DV-40 is suitable for customers who require accurate DC voltage indication combined with relay and transmission outputs.
Typical buyers include:
Industrial automation companies
Control panel manufacturers
Machine manufacturers
Original equipment manufacturers
System integrators
PLC automation companies
Electrical panel builders
Electrical contractors
Industrial maintenance departments
Manufacturing plants
Testing laboratories
Research laboratories
Power supply manufacturers
Battery system manufacturers
Electrical equipment manufacturers
Automation engineers
Electrical engineers
Maintenance engineers
Instrumentation engineers
Machine maintenance teams
Frequently Asked Questions
1. What is the Autonics MT4W-DV-40?
The Autonics MT4W-DV-40 is a digital panel meter designed for measuring and displaying DC voltage in industrial and electrical applications.
2. What does the MT4W-DV-40 measure?
It is designed specifically for DC voltage measurement.
3. What is the maximum DC voltage input of MT4W-DV-40?
The available measurement ranges include DC voltage inputs up to 500 VDC.
4. Which DC voltage ranges are supported?
The MT4W-DV-40 supports 0 to 500 VDC, 0 to 100 VDC, 0 to 50 VDC, 0 to 10 VDC, 0 to 5 VDC, 0 to 1 VDC, 0 to 250 mVDC and 0 to 50 mVDC measurement ranges.
5. What type of display does MT4W-DV-40 use?
It uses a 4 digit 7 segment LED display.
6. What is the display range?
The maximum display range is minus 1999 to 9999.
7. What is the character height of the display?
The LED characters are approximately 14.2 mm high for clear panel visibility.
8. What power supply is required?
The MT4W-DV-40 operates from a 100 to 240 VAC power supply at 50 or 60 Hz.
9. Does MT4W-DV-40 provide relay outputs?
Yes. It provides HI, GO and LO comparative relay outputs.
10. What are HI, GO and LO outputs used for?
These outputs can indicate whether the measured voltage is above, within, or below programmed limits. They can be used for alarms, interlocking, inspection, and process control.
11. Does MT4W-DV-40 provide a 4 to 20 mA output?
Yes. The meter provides a DC 4 to 20 mA process value transmission output.
12. Why is the 4 to 20 mA output useful?
The 4 to 20 mA signal allows the displayed measurement value to be transmitted to another compatible device such as a PLC, recorder, indicator, controller, or monitoring system.
13. Can MT4W-DV-40 be connected to a PLC?
Yes. Depending on the control system configuration, the relay outputs or DC 4 to 20 mA transmission output can be integrated with compatible PLC inputs.
14. Can it be used for battery voltage monitoring?
Yes. If the battery voltage falls within one of the supported DC voltage input ranges and the installation requirements are satisfied, the meter can be used for battery voltage monitoring.
15. Can it monitor a 0 to 10 VDC signal?
Yes. A 0 to 10 VDC input range is supported.
