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Data logger programming
- done graphically!
Drag
and Drop Logger Programming... A
truly revolutionary visual programming method for configuring
your HyperLogger or ModuLogger. NO PROGRAMMING CODE REQUIRED.
Just drag and drop desired icons onto the screen then interconnect
them with your mouse...indicating signal flow. Click on the icons
to open a Setup Dialog... select the desired options (eg type
of thermocouple) and the program is ready for transfer to the
Data Logger memory.
With the flexibility
of the HyperNet programming within HyperWare, data logging
and alarming strategies are quickly and efficiently implemented.
Conditional logging, time based logging, logging upon change,
data reduction, mathematical processing, alarming, messages, pager
call-out and and lots more are simply implemented... all without
writing cryptic code or entering tedious two-button programming
sequences.
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The above example logger program...illustrates
a real-world data logging and alarming application... programmed
quickly and simply via the HyperWare software. In this application,
the inlet and outlet temperatures in a process heat exchanger
are to be monitored and logged... as well as the differential
temperature across the exchanger. Additionally, if the temperature
of the inlet temperature ever exceeds 220°F, an Alarm
relay is to be energized and an alarm via telephone pager
is to be sent.
Following are descriptions of the
functions of each of the icons employed within this program.
A full complement of icons is available on the tool bar in
HyperWare for use in building programs.
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Sample Rate Clock icon... sends
an "update" command to the two Thermocouple Input hardware channels
every second. This forces the two temperatures to be sampled
every second. |
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Two
Thermocouple Input icons... represent
actual hardware inputs into the logger. Double-clicking on these
icons opens up a Configuration Dialog where the User can specify
the type of thermocouple, temperature units, filtering, names,
etc. They sample their inputs every time an Update command is
received from the Sample Rate Clock icon... then pass the measured
temperature value out to the connected Math icon and Delta icons. |
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Delta icons... receive
the temperature data from the Thermocouple icons and pass it
through to the Memory icons if the value changes by a User defined
amount ... since the last data was passed. This is an extremely
powerful function and can, in many cases, result in accurate
profiling of an analog signal... with a minimum amount of collected
data. |
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Data Memory icons... then
receive the changed temperature data from the Delta icons and
store the readings to memory within the data logger
for later download. |
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The Math icon... receives
inlet and outlet temperature data every second from the Thermocouple
input icons. In this application a simple subtraction function
has been entered via the Math icon Setup Dialog. The resulting
delta-T value is passed to another Delta icon, which in turn
passes it to memory upon change. The Math icon has a powerful
function library and in addition to basic algebraic math, can
perform trig functions, logs, wind vector calculations and much
more. Additionally, User-developed functions can be stored to
a library for future use. |
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The Comparator icon... compares
two analog inputs and outputs an ON/OFF digital output when
the top terminal input is greater than the bottom terminal input.
In this case, the Comparator icon turns ON whenever the heat
exchanger inlet temperature exceeds the Constant icon setting
of 220°F, in turn activating a Page call-out and Alarm Relay. |
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The Constant icon... represents
a fixed number to be used in the program for set-point comparisons,
calculation constants, and other purposes. In this case, it
defines the alarm level for the Set-point Comparator icon |
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The Pager Call-Out icon... when activated uses the logger
modem to originate a call-out to a pager. In this case alerting
staff to the over-temperature condition. |
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The Relay Alarm icon... represents
an actual hardware relay built into each HyperLogger,
ModuLogger and Mini data logging system. The relay can be used
to control an audible alarm or other function. |
And many more icons including...
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Averaging icon |
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Time Integral icon |
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Periodic Output icon |
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Counter icon |
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Duty Cycle icon |
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Logic icons |
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Data
Logger Selection Guide | Data Logger Applications | Data Sheets and Downloads | Testimonials | About Logic Beach | Contact
Logic Beach, Incorporated
8363-6F Center Drive
La Mesa, CA 91942
Phone: (619) 698-3300 |
Fax: (619) 469-8604
Logic Beach, Inc , All Rights
Reserved, Copyright © 2008
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