Operating Conditions (Installation); Operating Conditions (Environment) - Endress+Hauser Promass 40 Operating Instructions Manual

10 Technical data
Repeatability
Influence of medium
temperature
Influence of medium
pressure
Installation instructions
Inlet and outlet runs
System pressure
Ambient temperature
Storage temperature
Degree of protection
Shock resistance
Vibration resistance
Electromagnetic
compatibility (EMC)
54
Flow measurement
• Mass flow (liquid):
±0.25% ± [1/2 x (zero point stability / measured value) x 100]% o.r.
• Mass flow (gas):
±0.5% ± [1/2 x (zero point stability / measured value) x 100]% o.r.
• Volume flow (liquid):
±0.35% ± [1/2 x (zero point stability / measured value) x 100]% o.r.
o.r. = of reading
Zero point stability: see "Max. measured error"
Calculation example (mass flow, liquid):
Given: Promass 40 E, DN 25, flow = 8000 kg/h
Repeatability: ±0.25% ± [1/2 x (zero point stability / measured value) x 100]% o.r.
Repeatability → ±0.25% ± 1/2 ⋅
When there is a difference between the temperature for zero point adjustment and the
process temperature, the typical measured error of the Promass sensor is ±0.0003% of
the full scale value / °C.
The effect on accuracy of mass flow due to a difference between calibration pressure
and process pressure is negligible in the DN 8 ...40 range.
At DN 50 the effect is -0.009% o.r. / bar (o.r. = of reading).
10.1.7

Operating conditions (installation)

see Page 10 ff.
There are no installation requirements regarding inlet and outlet runs.
see Page 11
10.1.8

Operating conditions (environment)

–20...+60 °C (sensor, transmitter)
Install the device at a shady location. Avoid direct sunlight, particularly in warm climatic
regions.
–40...+80 °C (preferably +20 °C)
Standard: IP 67 (NEMA 4X) for transmitter and sensor
According to IEC 68-2-31
Acceleration up to 1 g, 10...150 Hz, following IEC 68-2-6
To EN 61326 and NAMUR recommendation NE 21
0.9 kg/h
⋅
-------------------------- - 100 %
= ±0.261%
8000 kg/h
Promass 40
Endress+Hauser