JUMO 405101, Описание интерфейса

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3 Sensor data
16
3.2 Interpretation of the sensor data
3.2.1 Pressure
The conversion of the digital values to decimal pressure values is realized by a linear function defined
by two points (P
min
and P
max
).
The minimum and maximum pressure values are stated in the order confirmation. Additionally, the pres-
sure range of the digital pressure measuring cell is stored in its memory and can be read by the software
(
 see chapter 4.6.1 "Sensor details", Page 22).
The output range is 10 % to 90 % of the 15 bit data. This way concurrently over- and underpressure is
measurable and the resulting 26214 full scale guarantee a very high resolution.
Calculating pressure value
In standard configuration the actual pressure can be calculated with the following formula:
MSP (measuring span) = P
min
(measuring range start) - P
max
(measuring range end)
Example:
Calculation
pressure range: -1 to +15 bar  span: 16 bar
P[u15] P[bar] P[bar] example
P
10%
: 3277 (10 % of 15 bit) P
min
-1
P
90%
: 29491 (90 % of 15 bit) P
max
+15