Performance Characteristics - Endress+Hauser Proline Prosonic Flow 93 Operating Instructions Manual

Technical data
!
Power consumption
Power supply failure
Potential equalization
Reference operating
conditions
Maximum measured error
120
Prosonic Flow W
• Cable material made of PVC (standard) or PTFE (for higher temperatures)
• Cable length: 5 to 60 m (16.4 to 196.8 ft)
Note!
To ensure correct measuring results, route the connecting cable well clear of electrical machines
and switching elements.
AC: < 18 VA (incl. sensor)
DC: < 10 W (incl. sensor)
Switch-on current:
• max. 13.5 A (< 50 ms) at 24 V DC
• max. 3 A (< 5 ms) at 260 V AC
Lasting min. 1 power cycle
HistoROM/T-DAT (Prosonic Flow 93) saves measuring system data if the power supply fails.
For potential equalization, no special measures are necessary.
10.1.6

Performance characteristics

• Fluid temperature: +20 to +30 °C
• Ambient temperature: +22 °C ± 2 K
• Warm-up period: 30 minutes
Installation:
• Sensors and transmitter are grounded.
• The measuring sensors are correctly installed.
Measured error clamp-on version
The measured error depends on a number of factors. A distinction is made between the measured
error of the device (Prosonic Flow 93 = 0.5 % of the measured value) and an additional installation-
specific measured error (typically 1.5 % of the measured value) that is independent of the device.
The installation-specific measured error depends on the installation conditions on site, such as the
nominal diameter, wall thickness, real pipe geometry, fluid, etc.
The sum of the two measured errors is the measured error at the measuring point.
Fig. 88: Example of the measured error in a pipe with a nominal diameter DN > 200 (8")
a Measured error of the device (0.5 % o.r. ± 3 mm/s)
b Measured error due to installation conditions (typically 1.5 % o.r.)
c Measured error at the measuring point: 0.5 % o.r. ± 3 mm/s + 1.5 % o.r. = 2 % o.r. ± 3 mm/s
Proline Prosonic Flow 93 FOUNDATION Fieldbus
%
3.5
2.0
b
0.5
0 2 4 6 8
c
a
10 12 m/s
A0011347
Endress+Hauser