Product ID:
VR-71  voltage Recorder with RS-232



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



Functions

  • Measure and Record with 2 Channels on 1 Unit
  • 9 Months of Continuous Use on 2 AAA Batteries
  • Choose the Display Unit
  • Reliable Backup Function
  • Auto-Range Function /±Input
  • Easy to Read Multi-Functional Display
  • Select from 20 Recording Intervals /
Shortest at 0.02 seconds
  • Data Capacity: 8000 Readings x 2 Channels








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.

Scale Conversion
You can specify to convert the scale by specifying values at 2 voltage points or by using the
conversion equation of y=Ax+B.
(y stands for the value after conversion and x is the voltage input directly from the sensor.)
EX: At 2 specified points: convert input voltage of 0v to 100 and input of 5v to 5000.
EX: Using the equation y=Ax+B: y=10x+15.


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.







Auto-Range Function /±Input

You can manually set the range or can set to have the auto-range function automatically select the
best range from the 4 input ranges
±1V, ±2V, ±6V, ±15V.


Note: If the recording interval is 0.5 seconds or less the auto-range function cannot be used.



Select from 20 Recording Intervals /
Shortest at 0.02 seconds

Select from 20 Recording Intervals / Shortest at 0.02 seconds





9 Months of Continuous Use on
2 AAA Batteries

Using our specially designed low energy consumption circuit this unit can run on two AAA alkaline
batteries for up to one year of continued use. No need to worry about where you place it as the
battery will allow you to measure and record over long periods of time whether the unit is in transit or
in a distant place.

Note:Battery life will depend on the recording environment, recording interval, communication
frequency, and ambient temperature. The above battery life test was carried out using brand new
batteries and in no way do we guarantee a battery's life.



Reliable Backup Function






We have eliminated the worry of losing data due to power loss or the switch being accidentally turned
off.

When Battery Power becomes Low When battery power becomes low a battery life
warning will appear on the unit's display indicating that the battery should be changed.
If within a short time the battery is changed, measurement and recording will not be interrupted
and there will be no data loss. If the battery is not  hanged the unit will automatically go into SLEEP
mode whereby measurement and recording will  stop but, due to our BACK UP FUNCTION,
data will not be lost and will remain saved for up to one year.

When the Switch is turned OFF
If while recording, the power switch is accidentally turned OFF, data will not be lost but will be saved
for up to one year from the time it was switched OFF.


Note:Even if the unit is in sleep mode it needs battery power. Hence, a total loss of battery power or
removal of the battery will result in the loss of data.



Easy to Read Multi-Functional Display


The easy to read LCD displays the current
readings, recording status, battery life warning,
and unit of measurement.



1:The channel number of the measurement being displayed will appear.

2:The recording status will appear.
ON:Recording in progress. BLINKING:Waiting for programmed start.


3:After every 2000 readings the scale will be marked from left to right.


4:ONETIME:When the number of recorded readings reaches 8000, "FULL"will appear in the unit's
LCD display and recording will automatically stop. ENDLESS:When the number of recorded readings
reaches 8000, the oldest data reading will be overwritten and recording will continue.


5: When the battery power becomes low, this will appear in the LCD display. If the battery power
becomes even lower, "SLP" will appear and normal operations will stop. If the signal appears, please
change the battery as soon as possible.


6:The unit of measurement for the display will appear.


7:Current measurements or operational messages such as "FULL" or "SLP" will appear.



Data Capacity: 8000 Readings
x 2 Channels

Calculates remaining battery life and displays a battery warning to indicate the need for a battery
change.


Note: Battery life will depend on the recording environment, recording interval, communication
frequency, and ambient temperature. Removing the batteries will result in a loss of recorded data.



Application Examples


















Set UP :












Order Information:

VR-71  voltage Recorder


Minimum Order: Negotiable
TEL: 886-2-27375866
FAX: 886-2-27373343
E-mail:  sales@tecpel.net
http://www.tecpel.net
TECPEL CO., LTD.
Model: VR-71
DOWNLOAD SPECIFICATION
Voltage Recorder 4~20mA data logging data logger TandD VR-71

  • Record Signals of 1-5V / 4-20mA

  • Record Output Signals from a Variety of
  • Pressure, Water Level, pH, Density,
    Opaqueness, etc..

  • Voltage Management of Electrical Circuits
VR-71 Voltage recorder data logger application example
Example of credated dot mastric pattern VR-71 TandD
voltage recorder vr-71 data logger
vr-71 multi-functional display of VR-71 Voltage recorder data logger
Voltage recorder data logger VR-71 TandD