Endress+Hauser Proline Cubemass C 300, Руководство по эксплуатации

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Proline Cubemass C 300 Technical data
Hauser 191
Influence of ambient
temperature
Current output
Temperature coefficient Max. 1 μA/°C
Pulse/frequency output
Temperature coefficient No additional effect. Included in accuracy.
Influence of medium
temperature
Mass flow and volume flow
o.f.s. = of full scale value
If there is a difference between the temperature during zero adjustment and the process
temperature, the additional measured error of the sensors is typically ±0.0002 %o.f.s./°C
(±0.0001 % o.f.s./°F).
The influence is reduced when the zero adjustment is performed at process temperature.
Density
If there is a difference between the density calibration temperature and the process
temperature, the measured error of the sensors is typically
±0.00005 g/cm 3 /°C (±0.000025 g/cm 3 /°F). Field density adjustment is possible.
Wide-range density specification (special density calibration)
If the process temperature is outside the valid range (→  189) the measured error is
±0.00005 g/cm 3 /°C (±0.000025 g/cm 3 /°F)
[kg/m ]
3
[°C]
-40 0 -80 40 80 120 160 200 240 280 320 360 400
[°F]
-50 0 50 100 150 200
0
2
4
6
8
10
2
1
A0016617
1 Field density adjustment, for example at +20 °C (+68 °F)
2 Special density calibration
Temperature
±0.005 · T °C (± 0.005 · (T – 32) °F)
Influence of medium
pressure
The tables below show the effect that a difference in pressure between the calibration
pressure and the process pressure has on the accuracy in the case of the mass flow and
density.
o.r. = of reading
It is possible to compensate for the effect by:
• Reading in the current pressure measured value via the current input or a digital
input.
• Specifying a fixed value for the pressure in the device parameters.
Operating Instructions .