+10ºC
+1ºC
-2ºC
The original temperature is shown within the range of 0ºC (Range Low) and 100ºC (Range High).
Bias points have been used to adjust the displayed temperature as shown in the graph in Fig 1.
To establish this bias, the settings are shown below.
Temperature Bias Value (BS0 through BS4) = Temperature After Bias - Actual Temperature
Display temperature after bias at 600ºC actual temperature = P
Fig 2: Bias Formula Calculation
Original
Temperature
Temperature After Bias
0ºC = BS0
10ºC = BS1
10ºC = BS2
50ºC = BS3
0ºC = BS4
BSP1
BSP2
BSP3
RL
RH
Original
Temp
Fig 1: Temperature Bias
0ºC = BS0
RL
BSP3
RH
BSP1
BSP2
Original Temperature
Temperature
After Bias
BS4
75ºC
0ºC
25ºC
50ºC
100ºC
-3ºC = BS3
-2ºC = BS1
+1ºC = BS2
0ºC = BS4
-3ºC
Example 1:
Temperature Settings to Establish Where the Bias Occurs
RL
BSP1
BSP2
BSP3
RH
0ºC
25ºC
50ºC
75ºC
100ºC
Bias Offset for Each Point
BS0
BS1
BS2
BS3
BS4
0ºC
-2ºC
+1ºC
-3ºC
0ºC
P = 600 + (600 - BPS2) x
BSP3 - BSP2
BS3 - BS2
+ BS2
Example 2:
600ºC -
100ºC
0ºC
500ºC
800ºC
1000ºC
+10ºC
+PºC
+50ºC
P = 600 + (600 - 500) x
800 - 500
50 - 10
+ 10 = 623ºC Temperature After Bias
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