User's Manual

DRAFT
Micropilot FMR56, FMR57
28 V. 1, Rev. 6, 19-10-2012 Endress+Hauser
Reaction time
The reaction time can be parametrized. The following step response times (as per DIN EN 61298-2)
1)
are
valid if the damping is switched off:
Tank height Sampling rate Step response time
< 10 m (33 ft) ³ 3.6 s
–1
< 0.8 s
< 70 m (230 ft) ³ 2.2 s
–1
< 1 s
Influence of ambient
temperature
The measurements are carried out in accordance with EN 61298-3
• Digital (HART, PROFIBUS PA): average T
K
= 5 mm/10 K; maximum 15 mm
• Analog (current output):
– zero point (4 mA): average T
K
= 0.02 %/10 K
– span (20 mA): average T
K
= 0.05 %/10 K
1) According to DIN EN 61298-2 the response time is the time which passes after a sudden change of the input signal until the output signal for the first time
assumes 90% of the steady-state value.