Technical data
Proline Promass E 300 Modbus RS485
182
Hauser
[kg/m ]
3
[°C]
-40
0
-80
40 80 120 160 200 240 280 320 [°F]
-40
0
50
100
150
0
2
4
6
8
10
14
12
A0016609
32
Field density calibration, for example at +20 °C (+68 °F)
Temperature
±0.005 · T °C (± 0.005 · (T – 32) °F)
Influence of medium
pressure
The table below shows the effect on accuracy of mass flow due to a difference between
calibration pressure and process pressure.
o.r. = of reading
It is possible to compensate for the effect by:
• Reading in the current pressure measured value via the current input.
• Specifying a fixed value for the pressure in the device parameters.
Operating Instructions .
DN
[% o.r./bar]
[% o.r./psi]
[mm]
[in]
8
³⁄₈
no influence
15
½
no influence
25
1
no influence
40
1½
no influence
50
2
–0.009
–0.0006
80
3
–0.020
–0.0014
Design fundamentals
o.r. = of reading, o.f.s. = of full scale value
BaseAccu = base accuracy in % o.r., BaseRepeat = base repeatability in % o.r.
MeasValue = measured value; ZeroPoint = zero point stability
Calculation of the maximum measured error as a function of the flow rate
Flow rate
Maximum measured error in % o.r.
ZeroPoint
BaseAccu
⋅
100
³
A0021332
± BaseAccu
A0021339
ZeroPoint
BaseAccu
⋅
100
<
A0021333
ZeroPoint
MeasValue
⋅
100
±
A0021334
