Technical data Proline Promass E TB2 HART
102 Endress+Hauser
Influence of ambient
temperature
Current output (additional error, in relation to the span of 16 mA):
– Zero point (4 mA)
Average T
K
: 0.02 %/10 K, max. 0.35 % over the entire temperature range
–40 to +60 °C (–40 to +140 °F)
– Span (20 mA)
Average T
K
: 0.05 %/10 K, max. 0.5 % over the entire temperature range
–40 to +60 °C (–40 to +140 °F)
Influence of medium
temperature
When there is a difference between the temperature for zero point adjustment and the process
temperature, the typical measured error of the sensor is ±0.0002 % of the full scale value/°C
(±0.0001 % of the full scale value/°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
DN
[% o.r./bar]
[mm] [in]
8 3/8 no influence
15 ½ no influence
25 1 no influence
40 1½ no influence
50 2 –0.009
Design fundamentals Dependent on the flow:
Flow ³ zero point stability : (base accuracy : 100)
–
Maximum measured error: ±base accuracy in % o.r.
–
Repeatability: ±½ × base accuracy in % o.r.
Flow < zero point stability : (base accuracy : 100)
–
Maximum measured error: ± (zero point stability : measured value) × 100 % o.r.
–
Repeatability: ±2/3 × (zero point stability : measured value) × 100 % o.r.
o.r. = of reading
Base accuracy for
[% o.r.]
Mass flow liquids 0.25
Volume flow liquids 0.25
Mass flow gases 0.75
18.7 Operating conditions: Installation
"Mounting requirements" chapter (® ä 17)
18.8 Operating conditions: Environment
Ambient temperature range
Measuring device
–40 to +60 °C (–40 to +140 °F)
Local display
–20 to +60 °C (–4 to +140 °F), the readability of the display may be impaired at
temperatures outside the temperature range.
To Next Page
Loading...
