20 |
P a g e
5.2.3.2
Apply Scaling
For more information on Gain and Offset, refer to the Smart Sensor Manual. If set, the user-defined Offset and
Gain values will be used to adjust the sensor reading:
Result = (Raw Reading * Gain) + Offset
5.2.3.3
Lock
If set, the user-specified units of measure string (4-character maximum) will be used in place of the default units
of measure.
5.2.3.4
Assigned
Refer to the
Smart Sensor Device Interface
documentation.
5.2.3.5
Available
Refer to the
Smart Sensor Device Interface
documentation.
5.2.4
Thermocouple Sensor Device Byte
The Sensor Device byte determines whether the Open Circuit detection is enabled.
Thermocouple Sensor Device Byte
7
6
5
4
3
2
1
0
0
0
0
Open Circuit Detect
0
Disabled
1
Enabled
0
0
0
0
5.2.5
Thermocouple User Calibration Parameter
The SP-016 provides a Thermocouple User Calibration register that may be set while the device is in the User Calibrate
mode and that is used to adjust the Cold Junction Compensation (CJC) value during normal operation.
During the User Calibration process, the actual (independently measured) Temperature value (Target Value) may be
entered and the SP-016 will the difference between the current measured temperature and the Target temperature to
adjust the CJC value. The User Calibration may be used when the thermocouple is measuring 0 degrees (Ice Point
calibration) to provide a simple method to correct for minor offset errors.
Note:
The device must be put into the ‘Calibration’ mode to access the User Calibration parameters.
User
Calibration
Parameter
Name
Range
Factory
Reset
Description
0
CJC
Calibration ± 1000.0
0.0
Adjusts the Cold Junction Compensation value
to allow the measured temperature to equal
the target temperature.
