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Example 2: Converting reading of K type thermocouple from the M-7018 into degrees Fahrenheit
Input type: K type thermocouple (0F)
Data Format
Modbus Reading
Actual Temperature
Actual Temperature
High
13600
2480°F
1360°C
Low
-2700
-454°F
-260°C
Scale
=
Offset = Actual value – Modbus Reading * Scale
= 2480 – (13600 * 0.18)
= 32
(y2- y1)
(x2 –x1)
=
13600 – (-2700)
2480 – (-454)
= 0.18
(Reading
High
- Reading
Low
)
(
Actual
High
- Actual
Low
)
=
Modbus Reading
Actual Temperature
(13600, 2480)
(-2700, -454)
∆
y
∆
x
=
∆
y
∆
x