Levelflex FMP51, FMP52, FMP54
Endress+Hauser 39
In the area of the upper probe end, the measuring error is as follows (rod/rope only):
2 (0.08)
0 (0)
- 2 (- 0.08)
100 (3.94) 200 (7.87)
10 (0.39)
- 10 (-0.39)
30 (1.18)
- 30 (- 1.18)
40 (1.57)
- 40 (- 1.57)
R
D
DC = 2
DC = 80
A0015091
16 Measuring error at the upper end of the probe; dimensions: mm (in)
D Sum of non-linearity, non-repeatability and hysteresis
R Reference point of measurement
DC Dielectric constant
Resolution
• digital: 1 mm
• analog: 1 μA
Reaction time
The reaction time can be parametrized. The following step response times (as per DIN EN
61298-2)
5)
are valid if the damping is switched off:
Level measurement
Probe length Sampling rate Step response time
< 10 m (33 ft) 3.6 measurements/second < 0.8 s
< 40 m (131 ft) ≥ 2.7 measurements/second < 1 s
Interface measurement
Probe length Sampling rate Step response time
< 10 m (33 ft) ≥ 1.1 measurements/second < 2.2 s
Influence of ambient
temperature
The measurements are carried out in accordance with EN 61298-3
• digital (HART, PROFIBUS PA, FOUNDATION Fieldbus): average T
K
= 0.6 mm/10 K
For FMP51 and FMP52 with remote sensor
6)
there is an additional offset of
±0.3 mm/10K (±0.01 in/10K) per 1 m (3.3 ft) of the remote cable.
• analog (current output):
– zero point (4 mA): average T
K
= 0.02 %/10 K
– span (20 mA): average T
K
= 0.05 %/10 K
5) According to DIN EN 61209-2 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.
6) Product structure: Feature 600, options MB, MC or MD)
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