Emerson CMF200A Manual do Utilizador descarregar pdf (Página 8)

8 Micro Motion

2-Wire Coriolis Flow and Density Meters

Environmental effects

Process temperature effect Process temperature effect is defined as:

• For mass flow measurement, the worst-case zero offset due to process fluid temperature

change away from the zeroing temperature.

• For density measurement, the maximum measurement offset due to process fluid

temperature change away from the density calibration temperature.

Process temperature effect

% of maximum flow rate per °C density accuracy per °C

(1)

(1) For –100 °C and above.

g/cm

kg/m

CMF025 ±0,0001250 ±0,000015 ±0,015

CMF050 ±0,0001250 ±0,000015 ±0,015

CMF100 ±0,0001250 ±0,000015 ±0,015

CMF200 ±0,0005000 ±0,000015 ±0,015

Ambient temperature effect On mA output: ±0,005% of span per °C

Pressure effect Pressure effect is defined as the change in sensor flow and density sensitivity due to process

pressure change away from the calibration pressure. Pressure effect can be corrected.

Pressure effect on flow accuracy

% of rate per psi % of rate per bar

liquid gas liquid gas

CMF025 None None None None

CMF050 None None None None

CMF100 –0,0002 None –0,003 None

CMF200 –0,0008 –0,0004 –0,012 –0,006

Pressure effect on density accuracy

g/cm

per psi kg/m

per bar

CMF025 0,000004 0,058

CMF050 –0,000002 –0,029

CMF100 –0,000006 –0,087

CMF200 0,000001 0,0145

EMI effects Complies with EMC directive 2004/108/EC per EN 61326 Industrial

Conforms to NAMUR NE21 Version: 08.22.2007

Vibration limits Meets IEC 68.2.6, endurance sweep, 5 to 2000 Hz, 50 sweep cycles at 1,0 g

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 23 24

Sem comentários

Emerson CMF200A Manual do Utilizador Página 8