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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.
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-
Soil Moisture
at one point.
-
Water
evaporation at one point.
-
Wind speed at
one point.
-
Wind - Direction at one point.
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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 |
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Housing |
Aluminum |
|
Carrying case |
Rexene |
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Dimensions with case: |
250 x 120 x 75 mm |
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Communication port |
RS 232; for Data Transfer from Data Logger and to computer |
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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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