Endress+Hauser Prosonic S FDU91 - Ambient Conditions; Ingress Protection; Vibration Resistance; Storage Temperature

Prosonic S FDU90/91/91F/92/93/95/96
16 Endress + Hauser
Ambient conditions
Ingress protection tested according to IP68/NEMA6P (24 h at 6 ft under water surface)
Vibration resistance DIN EN 600068-2-64; 20 ... 2000 Hz; 1 (m/s
2
)
2
/Hz; 3x100 min.
Storage temperature identical to process temperature, see below
Thermal shock resistance according to DIN EN 60068-2-14; examination to min/max process temperature; 0,5 K/min; 1000 h
Electromagnetic compatibility • Interference emission to EN 61326; Equipment class A
• Interference immunity to EN 61326; Appendix A (Industrial)
Process conditions
Process temperature
Process pressure
Sensor Process temperature Process pressure (abs.)
FDU90 -40 ... +80 °C
1
0.7 ... 4 bar
FDU91 -40 ... +80 °C
1)
1) In order to avoid ice build-up, the sensors FDU90 and FDU91 are available in a version with
integrated sensor heater (see page 6). If this heater is used, an external temperature sensor has to be
applied for time-of-flight correction. The transmitter FMU90 is available in a version with an input for
the external temperature sensor. For details refer to Technical Information TI397F.
0.7 ... 4 bar
FDU91F
-40 ... +105 °C
(30 min/135 °C)
2)
for Ex instruments: -40 ... +80 °C
2) only valid for Tri-clamp and flush mounting
0.7 ... 4 bar
FDU92
-40 ... +95 °C
for Ex instruments: -40 ... +80 °C
0.7 ... 4 bar
FDU93
-40 ... +95 °C
for Ex instruments: -40 ... +80 °C
0.7 ... 3 bar
FDU95 - *1***
(low temperature version)
-40 ... +80 °C 0.7 ... 1,5 bar
FDU95 - *2***
(high temperature version)
-40 ... +150 °C
for Dust-Ex versions: -40 ... 130 °C
0.7 ... 1,5 bar
FDU96
-40 ... +150 °C
for Dust-Ex or Gas-Ex versions:
-40 ... 140 °C
0.7 ... 3 bar