Supply Voltage; Terminals; Cable Entry; Cable Gland - Endress+Hauser Prosonic T FMU30 Technical Information

Supply voltage

Terminals

Cable entry

Cable gland

Power consumption

Current consumption

Reaction time

Reference operating
conditions

Measured value resolution

Pulse frequency

1) 2)

Maximum measuring error



Typical measuring error

Influence of the vapor
pressure
1) according to EN 61298-2
2) with reference operating conditions
8
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14-35 V
Cable cross-section: 0.25 to 2.5 mm2 (24 to 14 AWG)
G ½" or ½" NPT
M20x1.5 (recommended cable diameter 6 to 10 mm (0.24 to 0.39 in))
51 mW to 800 mW
3.6 to 22 mA

Performance characteristics

The reaction time depends on the parameter settings. The minimum value is: min. 2 s
• Temperature = +20 °C (+68 °F)
• Pressure = 1013 mbar abs. (15 psi abs.)
• Humidity = 50 %
• Ideal reflective surface (e.g. calm, smooth fluid surface)
• No interference reflections within signal beam
• Set application parameters:
– Tank shape = dome ceiling
– Medium property = liquid
– process conditions = standard liquid
1 mm (0.04 in)
max. 0.5Hz
The exact values are dependent on the type of device and the parameter settings.
±0.2 % of the maximum span of the sensor
Include linearity, repeatability, and hysteresis
Better than: ±3 mm (±0.12 in) or 0.2 % of measuring distance*
* whichever is greater
The vapor pressure at 20 °C (68 °F) gives a hint on the accuracy of the ultrasonic level measurement. If the
vapor pressure at 20 °C (68 °F) is below 50 mbar (1 psi), ultrasonic level measurement is possible with a very
high accuracy. This is valid for water, aqueous solutions, water-solid-solutions, dilute acids (hydrochloric acid,
sulfuric acid, ...), dilute bases (caustic soda, ...), oils, greases, slurries, pastes, ...
High vapor pressures or outgassing media (ethanol, acetone, ammonia, ...) can influence the accuracy. If
conditions like these are present, please contact your Endress+Hauser sales representative.
Prosonic T FMU30
Endress+Hauser