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Data Acquisition & Control System
For Weather Monitoring Applications

HYMDAS

datasheet

HYMDAS is a battery operated eight channel data logger designed especially for field instillations such as weather monitoring applications. Its time keeping system keeps track of real an elapsed time in "sleep" mode , at prespecified and programmed intervals, measures automatically the inputs connected to its channels and stores them in its battery backed up memory (NVRAM). The stored data can be transferred to a computer using the hand held data retrieval unit-ARU7.

HYMDAS is housed in cast aluminum weather proof box suitable for rugged outdoor applications.

The HYMDAS can measure directly from any eight of the following type of sensors:

  • Air Temperature at up to four points.
  • Relative Humidity at one point.
  • Rainfall at one point.
  • Solar Radiation at one point.
  • Soil Moisture at one point.

  • Water evaporation at one point.

  • Wind speed at one point.

  • Wind - Direction at one point.

In some applications temperatures are required to be measures at more then one point. In such a case some inputs can be removed from the list.


Specifications of HYMDAS
Model HYMDAS 8
Number of Channels 8
Input Range 0 to ± 2V
Housing IP67; cast aluminum, powder coated
Measurement Accuracy < ± 0.1% FSD
Logging Interval Programmable from one minute to 99 hours
Data Storage Capacity 1000 sets of readings with data and time stamp
Communication Port RS232, for setup and data retrieval through ARU7
Power Source Built in Battery
Dimensions Data logger unit ( HYMDAS) : 315x 110x 265 mm

Specifications of Data Retrieval Unit
Function Setup, Local monitoring and Data Transfer to a PC.
Model ARU-7
Memory Capacity 64 K byte; battery backed up.
Display 16 character x 2- line; Backlit; Alphanumeric LCD
Keys Four – ESC, ENT, UP, DOWN
Housing Aluminum
Carrying case Rexene
Dimensions with case: 250 x 120 x 75 mm
Communication port RS 232; for Data Transfer from Data Logger and to computer
Power Source (i). When connected to ADL-0210 it draws power from it
(ii).Requires separate power supply when  connected to PC Supplied with ARU-7

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