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CALIBRATION DATA - -58 to 258 Degree F Temperature sensor
VOLTS
Degrees F
X
, Y
0
0
0
2.5
X
, Y
1
1
5
FORMULA FOR A STRAIGHT LINE
Y = Data point on the Y axis (Pressure)
X= Data point on the X axis (volts output of the sensor)
M= Slope of the line (degrees C per volt output)
B= Y intercept, or Offset. (Value of Y when X=0)
FIND M - THE SLOPE OF THE LINE
M = Rise / Run
M = (Y1 - Y0) / (X1-X0)
M = ((248-(-58)) / (5-0)
M = 306/5
M= 61.2
FIND B -The Offset (Assume that X = 0)
We know from the calibration information that when the tempertaure is -58 Deg F that the signal is 0V
Y = (M*X) + B
-58 = (61.2 *0) + B
-58= B
B = -58
Let's check our work using one of the other known data points Temperature (Y)=95 and Volts (X)= 2.5
Y = (M*X) + B
95 = (61.2 * X) +(-58)
X = (95 + 58) /61.2
X = 2.5
You can see that the calculated value for X at the middle of the sensor range is 2.5. This is correct
From the calculations above, here is the information that is entered into the calibration fields in the DAAS setup screen
SLOPE = 61.2
OFFSET = -32
P/N 89360-F, rév. 3
-58
95
300
248
250
200
150
100
50
0
-50
-100
F
4-26. C
'
IGURE
ALCUL D
ÉTALONNAGE DE TEMPÉRATURE
Degrees F
DATA POINT
X
, Y
0
0
0
1
2
0, -58
Y=MX+B
,
DATA POINT
X
, Y
1
1
2.5, 95
3
4
Output Voltage
ÉCHANTILLON
5, 248
5
6
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