
29 |
M 5 7 4 8
7.7
Apparent Heat Interface
The Apparent Heat sensor provides a Heat Index (US) or Humidex (CAN) calculated value on the SP-003-2 and SP-004-
2. These calculations are based on the measured temperature and relative humidity and the calculated Dewpoint
value.
Apparent Heat Descriptor
Offset
Name
Value
Description
0x00
Sensor Type
0x3a
Heat Index (
o
C)
0x3b
Humidex (
o
C)
0x01
Data Type/Format
0x06
Float type
0x02
Configuration
??
See below
0x03
Sensor Device
0x0?
See Below
0x04
UOMR
“
o
C”
Units of measure
Apparent Heat Sensor Type
Sensor Type
SI Derived Units
Measurement
0x3a
o
C
Heat Index Apparent Heat
0x3b
o
C
Humidex Apparent Heat
Apparent Temperature Data Type/Format
Apparent Heat Data Type/Format
7
6
5
4
3
2
1
0
Smart
Sensor
Writeable
Factory
Calibrate
Reserved
Data Type
0
0
0
0
6 == Floating point
Data Type
The 4-bit Data Type field determines the type of data of the specific sensor.
Factory Calibrate
The Factory Calibrate bit is used during factory calibration. If set, factory calibration is
performed on the raw sensor reading PRIOR to user scaling.
Writeable
The writeable bit is cleared, indicating that the sensor values may not be overwritten.
Smart Sensor
This bit is cleared.