IMD 100 Integration manual 4189360015 Rev. G
Units conversion
Page 171 of 243
i
Raw_value
Temperature
12
24946
80
13
25981
90
14
26906
100
When converting a temperature given in raw values to centigrade, the interval
i
must be found. Select
the first interval (table row) where the
Raw_value
is smaller than the
Actual_temp_raw
.
Formula:
𝐴𝑐𝑡𝑢𝑎𝑙 𝑡𝑒𝑚𝑝𝑒𝑟𝑎𝑡𝑢𝑟𝑒 ºC =
𝑇𝑒𝑚𝑝𝑒𝑟𝑎𝑡𝑢𝑟𝑒 [𝑖] +
(𝐴𝑐𝑡𝑢𝑎𝑙_𝑡𝑒𝑚𝑝_𝑟𝑎𝑤−𝑅𝑎𝑤_𝑣𝑎𝑙𝑢𝑒[𝑖])∗(𝑡𝑒𝑚𝑝𝑒𝑟𝑎𝑡𝑢𝑟𝑒 [𝑖+1]−𝑡𝑒𝑚𝑝𝑒𝑟𝑎𝑡𝑢𝑟𝑒[𝑖])
𝑅𝑎𝑤_𝑣𝑎𝑙𝑢𝑒[𝑖+1]−𝑅𝑎𝑤_𝑣𝑎𝑙𝑢𝑒[𝑖]
Example of converting a value of 24000 units to ºC:
70 +
(24000 − 23823) ∗ (80 − 70)
24946 − 23823
= 71.6
24000 units = 71.6 ºC
Actual_temp_raw
=
24000
i
= row 11 is selected
Temperature[i]
= 70
Temperature[i+1]
= 80
Raw_value[i]
= 23823
Raw_value[i+1]
= 24946
Info
The NTC sensor data is defined down to -30ºC.