Endress+Hauser Prosonic M FMU42, Руководство по эксплуатации

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Technical data Prosonic M FMU42 HART
46 Hauser
14.3.5 HART noise
500 Hz to 10 kHz: U
eff
= 2.2 mV (at 500 Ω)
14.4 Performance characteristics
14.4.1 Reference operating conditions
• Temperature: +20 °C (+68 °F)
• Pressure: 1 013 mbar abs. (15 psi abs.)
• Humidity: 50 %
• Ideally reflecting surface, e.g. calm, even liquid surface
• No interference reflections inside the signal beam
• Configured parameters for applications:
• Tank shape = Dome ceiling
• Medium property = Liquid
• Process cond. = Standard liquid
14.4.2 Response time
The response time depends on the configured application parameters. Minimum values:
Two-wire version: ≥ 2 s
14.4.3 Measured value resolution
2 mm (0.08 in)
14.4.4 Measuring error
Better than ±4 mm (±0.16 in)or 0.2 % of the measuring distance, the larger value applies
Observe typical measured error under reference operating conditions
• Linearity
• Reproducibility
• Hysteresis
14.4.5 Maximum measured error
According to EN 61298-2; under reference operating conditions
±0.2 % in relation to the maximum sensor span
14.4.6 Influence of gas phase
The vapor pressure of the medium at 20 °C (68 °F) is an indicator of the accuracy of the
ultrasonic level measurement.
Accuracy
Very good accuracy: vapor pressure at 20 °C (68 °F) less than 50 mbar (1 psi). This applies
for:
• Water
• Aqueous solutions
• Water/solid solutions
• Diluted acids, e.g. hydrochloric acid, sulfuric acid
• Diluted bases, e.g. sodium hydroxide solution
• Oils, greases, lime water, sludges or pastes