Endress+Hauser Deltabar FMD72 - Page 122

Technical data Deltabar FMD71, FMD72
122 Endress+Hauser
Measuring ranges Sensor Standard version Calculated long-term stability (L
Diff
)
of the differential pressure
1 year 10 years
% of URL for every sensor
1 bar (15 psi)
2 bar (30 psi)
4 bar (60 psi)
10 bar (150 psi)
40 bar (600 psi)
Gauge pressure L = ±0.05
L = ±0.1
1)
L = ±0.2
Absolute pressure L = ±0.3
1) For hygienic process connections
15.3.10 Total error
The total error comprises the total performance and long-term stability. All specifications
apply to the temperature range –10 to +60 °C (+14 to +140 °F).
Measuring cell % of URL for every
sensor - standard
version
% of URL for every
sensor - high-
temperature version
% of URL for every
sensor - hygienic
version
Calculated total error (TE
Diff
)
of the differential pressure
100 mbar (1.5 psi)
250 mbar (4 psi)
400 mbar (6 psi)
TE = ±0.25 TE = ±0.51 TE = ±0.925 Calculation (mbar, bar or psi):
TE
Diff
HP HP
2
(TE URL )
+=
.
LP LP
2
(TE URL )
.
100 100
A0016472
Percentage calculation of URL dP:
TE [%]
P
100
.
Diff
Diff
=
TE
Diff
A0016473
1 bar (15 psi)
2 bar (30 psi)
4 bar (60 psi)
10 bar (150 psi)
40 bar (600 psi)
TE = ±0.2 TE = ±0.51 TE = ±0.7
15.3.11 Warm-up period
4 to 20 mA HART: < 10 s