Elgas EDT 101, Руководство пользователя

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4.3.2 Factory configuration section
This section contains a basic information about the transducer and calibration data. The
parameters are entered during manufacturing and calibration procedures and cannot be
changed by the user.
Hardware revision number identifies a version of the transducer’s hardware.
Software revision number identifies a version of the transducer’s software. MSB indicates a
main revision number, LSB sub-revision number.
Serial number identifies each transducer individually.
Sensor type . Information about the type of the sensor. Code 10h is used for the temperature
sensor.
Units. Information about physical units used for Measurement and Operation range limits
representation. Code 20h is used for °C.
Measurement range lower and upper limit provide the range of input temperature in which
the transducer is calibrated and in which measures with the specified accuracy.
Operation range lower and upper limit provide the range of input temperature which is
correctly handled by the analog-to-digital converter and numerical calculation. If the
temperature value is outside the measurement range but inside the operation range, the
measurements are still performed but the accuracy is undefined.
Standard values of the limits of the measurement and operation range are shown in the
following table:
Transducer range
(information on label) Measurement range [°C] Operation range [°C]
Lower limit Upper limit Lower limit Upper limit
-25°C to +70°C -25 70 -50 100
-40°C to +70°C -40 70 -50 100
Primary channel offset and gain provide an offset and gain of the analog-to-digital converter
when primary channel (temperature) is measured. The offset is stored in the MSB of the
register, the gain in the LSB.
Auxiliary channel offset and gain provide an offset and gain of the analog-to-digital converter
when auxiliary channel is measured. The offset is stored in the MSB of the register, the gain in
the LSB.
Calibration coefficients are used to calculate actual temperature using values obtained from
the analog-to-digital converter for the primary and auxiliary channel.
Coefficient format specifies a layout of the coefficients and algorithm for calculation.