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| SDI-12 |
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The D7000 units can interface to sensors using
serial communication. The data (inputs) from the sensor is mapped within the
D7000 and treated as any other input to the unit (alarms, logs, sequences,
etc..).Using SDI-12 the D7000 controls the sensor and can log 28 data points as
standard.
What is
SDI-12?
SDI12 sdi12
SDI-12 stands for serial data interface at 1200 baud. It is a
standard to interface battery powered data recorders with micro-processor based
sensors designed for environmental data acquisition (EDA).
EDA
is accomplished by means of a sensor, or sensors, and a data recorder which
collects and saves the data. SDI-12 is a standard communications protocol which
provides a means to transfer measurements taken by an intelligent sensor to a
data recorder. An intelligent sensor typically takes a measurement, makes
computations based on the raw sensor reading, and outputs the measured data in
engineering units.
For example, an SDI-12 pressure sensor may take a series
of pressure measurements, average them, and then output pressure in psi, inches
of mercury, bars, millibars, or torrs. The sensor's micro-processor makes the
computations, converts sensor readings into the appropriate units, and uses the
SDI-12 protocol to transfer data to the recorder
What requirements
make SDI-12 particularly useful?
SDI-12 is used in applications
with the following requirements:
· battery powered operation with
minimal current drain
· use of one data recorder with multiple
sensors on a single cable
· use with microprocessor-based sensors
that perform complex calibration algorithms or make internal computations
Can more than one parameter be measured with a single data
recorder?
Yes. SDI-12 is a multi-drop interface that can
communicate with multi-parameter sensors.
Multi-drop means that more than one
SDI-12 sensor can be connected to a data recorder
For further information on this or
any other Dynamic Logic products or service please contact our sales team on
Tel: +44(0)1506 592600 or E-mail: mcsales@flygt.com |
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