24 |
M 5 7 4 8
Apply Scaling
If set, the user defined Offset and Gain values will be used to adjust the sensor reading:
Result = (Raw Reading * Gain) + Offset
Assigned
The Assigned bit will always read as 0.
Available
The Available bit will always read as 0.
Humidity Device Byte
The Humidity Device Byte is not used.
Humidity Parameters
There are no user accessible parameters for the Humidity sensor.
Humidity User Calibration
There are no Humidity user calibration registers assigned.
IPSO Relative Humidity Definition
The relative humidity IPSO definition provides signal range, measured min/max values, IPSO object type
information.
Offset
Name
Value
Description
0x00
Sensor Type
3304
Relative Humidity (%)
0x02
Precision
1
Provides reading of xxx.y
0x04
Reset Min/Max
??
See below
0x08
Min Measured
??
Minimum reading since last reset
0x0c
Max Measured
??
Maximum reading since last reset
0x10
Min Range
0.0
Minimum reading
0x14
Max Range
100.0
Maximum reading
Precision
The Relative Humidity value is rounded to provide ±0.1 resolution.
Sensor Trigger Function
The Sensor Trigger function is used to reset the IPSO min/max values as well as controlling the
Calibration process.
Sensor Trigger Function
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
Reset
Min/Max
15
14
13
12
11
10
9
8
0
0
Calibration
Reset
Calibration
Status
Calibration
Mode
Capture
High
Capture
Low
Calibration
Start
Setting the Reset Min/Max bit to 1 will reset the Min/Max values recorded by the IPSO process. No
User Calibration process is supported on the relative humidity input and all Calibration bits should
be written as 0.