Data Loggers Measurement Type - Voltage


Estimated delivery within 4-7 working days

Measure and record up to four channels in One logger.

By coupling four units together, it is possible to simultaneously record up to 16 channels. This multi-channel battery powered data logger has an SD memory card slot with auto transfer capabilities to ensure your data is not lost when internal memory becomes full. It also comes with a touch panel for easy operation.

Download Brochures:
MCR-4V (2.74 MB)


Measurement Channels Voltage 4ch
Input Method Scanning Method, Differential Input, Each Channel Isolated
Compatible Sensors -
Measurement Units -
Measurement Range ±300 mV, ±1.5 V, ±6 V, ±24 V, Auto (*1) Absolute Maximum Input Voltage: ±50 V
Input Impedance Approx. 1.1 M
Input Frequency DC - 100 Hz
Accuracy (*2) When the 50-60 Hz filter is ON, varies with the Measurement Range as follows: ±300 mV: ±( 0.3 % + 0.06 mV ) ±1.5 V : ±( 0.3 % + 0.3 mV ) ±6 V : ±( 0.3 % + 0.6 mV ) ±24 V : ±( 0.3 % + 2.4 mV ) Auto : According to the range in use
Measurement Resolution 50 - 60 Hz Filter: ON 0.01 mV OFF 0.1 mV
Recording Interval 2, 5, 10, 20, 50, 100, 200, 500 ms. / 1, 2, 5, 10, 15, 20, 30 sec. 1, 2, 5, 10, 15, 20, 30, 60 min. The minimum interval will depend on the number of channels,measurement range, and 50-60 Hz filter setting.
Logging Capacity (*3) When recording 1 channel : up to 480,000 readings/ch When recording 2 channels : up to 240,000 readings/ch When recording 3 channels : up to 160,000 readings/ch When recording 4 channels : up to 120,000 readings/ch
Recording Mode Endless ( Overwrite oldest data in the current recording session when capacity is full ) or One Time ( Stop recording when capacity is full )
Group Recording Up to 4 units ( 16 channels ) can be recorded simultaneously. Coupling of MCR-4V and MCR-4TC is possible. (*4)
LCD Display Items Measurements, Trend Graph, Battery Level, etc.
Communication Interfaces USB Communication
External Memory SD Memory Card, SDHC Memory Card (*5)
Power AA Alkaline Battery x 2 ( AA Ni-MH batteries may also be used ) AC Adaptor AD-05A2 , USB Power 5V 250mA
Battery Life (*6) Approx. 4.5 to 130 days 4 channels, Instantaneous value recording With AA alkaline batteries
Input Terminal Preheat Terminal Screwless Terminals Compatible Wires Single Wire : 0.32 to 0.65 ( AWG 28 - 22 ) Twisted Wire : 0.08 to 0.32 ( AWG 28 - 22 ), 0.12 or more in diameter Stripping Length : 9 to 10
Isolation CH1, CH2, CH3, CH4, USB, and Preheat are isolated. Battery terminals are not isolated from the CH1-CH4 input terminals. CH1- CH4 Maximum Applied Voltage : ± 50 V Electrical Isolation Resistance : 50M or more ( DC ± 250 V )
Dimensions H 120mm x W 75mm x D 32mm
Weight Approx. 140 g
Operating Environment Temperature: 0 to 50°C Humidity: 90 %RH or less ( no condensation )
Accessories AA Alkaline Battery x 2, USB Mini-B Cable US-15C, Software CD-ROM, Card Slot Cover, User's Manual Set ( Warranty Included )
Software Compatible OS (*7) Microsoft Windows 10 32 / 64 bit Microsoft Windows 8 32 / 64 bit Microsoft Windows 7 32 / 64 bit Microsoft Windows Vista 32 bit ( SP1 or later ) Microsoft Windows XP 32 bit ( SP3 or later )
Display Languages (*8) English

The .NET Framework 4 Client Profile is required. (*9)

*1: When “Auto” is selected, measurement range will be automatically changed according to the voltage being measured.

*2: MCR-4TC has superior noise filter, but the measurement may sometimes fluctuate due to strong noise. Especially when the recording interval is set to 200 ms or less, the filtering becomes weaker and hence the fluctuation may become greater.

*3: If the logging capacity is not filled at the end of one recording session, the logger can record up to 30 times.

*4: Group Recording may not be started depending on the recording or measurement interval specifications of the connected Master unit.

*5: Please check the T&D Website for information on memory cards whose operation has been confirmed.

*6: Battery life varies depending upon multiple factors including ambient temperature, recording interval, number of measurement channels, and frequency of data export to a memory card. All estimates are based on operations carried out with a new battery and are in no way a guarantee of actual battery life.

*7: For installation, it is necessary to have Administrator (Computer Administrator) rights.

*8: We recommend using an operating system in the same language as the display language. Operation in different languages is not guaranteed.

*9: During the installation process of the software, if not present, .NET Framework 4 Client Profile will be installed automatically.

The specifications listed above are subject to change without notice.

MCR-4V loggers can operate on battery or USB power. Data can be checked on site from the loggers LCD trend graph. Data downloaded to your PC can be viewed and analyzed with our Windows compatible software "T&D Graph". It is possible to connect up to four loggers, including our MCR-4TC temperature data loggers, allowing for with large quantities of data and for tracking frequent changes in volatage and current.

  • Quick and Precise Voltage Measurement - MCR-4V features an ultra-quick 2msec recording interval a precise resolution of 10 μV.
  • Preheat Function - Save battery power and lengthen recording possibilities by using this function to supply power to the sensor only upon recording start.
  • Electrical Isolation between Channels - Channel isolation makes it possible to measure signals of different potentials.
  • Scale Conversion / Unit Settings - It is possible to change the input voltage for each channel to a record and display in a user desired scale and unit of measurement.
  • Logging Capacity of 480,000 Data Readings - One logger can hold up to 480,000 readings using just 1 channel, up to 120,000 readings per channel using 4 channels.