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July 11 2005

T&D Voltage Recorder


VR-71


The VR-71 data logger measures and records voltage signals within a measurement range of DC(±)15V.
It can record signals of 1-5V / 4-20mA as welll as output signals from a variety of sensors.The most impressive feature is the software function that allows you to create your own dot matrix patterns for unit display and then change the recorded voltage signal into the desired unit and display accordingly to match your measurings.

VR-71

 Functions

Measure and Record with 2 Channels on 1 Unit
It is possible to measure and record on two channels with 1 unit. These two channels make it possible to obtain reliable readings when measuring two related phenomena. By pressing the DISPLAY button, you can choose to set the LCD display to show both channels' readings alternatively, show one channel as a fixed display or show neither channel.
Choose the Display Unit
Of course you can display the voltage reading as is, or by using the software to select the desired scale, convert and display the readings in the unit of your choice.
<Unit Display>
It is possible using the software to create and edit dot matrix patterns to be used in the LCD as the unit of measurement.
Select from 20 Recording Intervals / Shortest at 0.02 seconds
Recording interval can be selected from 20 choices ( 0.02sec to 60 min ). Tere are also two Recording Modes to choose from : One-time or Endless.
Data Capacity : 8000 Readings x 2 Channels
Each channel can record up to 8000 readings. At a recording interval of 60 min, ( the longest possible recording interval ) that gives you one year of continuous recording capability.

 Specifications

Unit
VR-71
Measurement Item
Voltage
Number of Channels
2 (common ground)
Measurement Range
Range:± 1,2,6,15V Auto Range / Fixed Range
Measurement Accuracy
± 0.5% ±5dgt (10°c~30°c)
Display Resolution
MIN 1mV
Recording Interval
20 selections : 0.02 sec~60 min
Recording Capacity
8000 readings x 2 channels
Recording Mode
Endless / One-time
LCD Display Items
Measurement Reading / Recording Status / Time / Memory Capacity
Power Source
Battery Lofe Warning / Unit of Measurement / 2 AAA Alkaline Batteries (LR03)
Battery Life
About 5-9 months *1
Interface
Serial communication (RS-232C)
Dimensions
H55mm x W88mm x D24mm
Weight
About 93g (including 2 batteries)
Temperature and Humidity Durability of the Unit
Temp : 0~50°c  Humidity : 90%RH or less ( no condensation )
Attached Sensor / cable
2 Input Cables (VR-7101)
Included in Kit
Software Set / Serial Communication Cable x 1 / AAA Alkaline Batteries x 2
User's Manual and Warranty x 1
Other
It is possible to measure electrical current by VR-7103 *2
Compatible OS
Windows 98SE / Me / 2000 / XP
*1 At recording interval of 1 sec : about 5 months / at rec. interval of more than 2 seconds : 9months/
at a recording interval of 0.02 seconds: about 13 days.
*2 VR-7103 <4-20mA Probe>
Maximum Current Input : MAX 40mA
Internal Resistance : 100Ω
Output : 2V at 20mA / 0.4V at 4mA
Conversion Accuracy : 0.5%
Cable Length : 60 in (1.0m)
Unit :mm
①M3.5 Crimp Terminal ②Vinyl Coated Electrical Wire ③Stereo Mini Jack(ø2.5)

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