Endress+Hauser Teqwave F, Operating Instructions Manual

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Technical data Teqwave F/I Modbus TCP
72 Hauser
Terminals
Terminal type Screw terminals
Conductor cross-
section 0.129 to 1.31 mm 2 (16 to 26 AWG)
Cable specification →  19
16.6 Performance characteristics
Max. measured error
Speed of sound ±2 m/s (±6.56 ft/s)
Temperature ±0.5 K
Density ±0.01 g/cm³
Accuracy Accuracy of concentration measurement
The measuring device can achieve an accuracy of up to 0.01 %. The accuracy depends on
the concentration app. Detailed information on the accuracy is provided in the data sheet.
Reaction time Influence of medium temperature
The response time of the temperature measurement depends on the heat transfer
from the fluid to the steel. Activation of the Kalman filter accelerates the response
time. An erratic change in the temperature generates an error message. It is possible
to set a threshold for displaying the error.
Influence of variations in
the fluid temperature
If the fluid temperature changes quickly (>1.5 °C/min (34.7 °F/min)), the measured error
can be greater than specified in the "Max. measured error" section.
Influence of vibrations The measured error can be greater than specified in the "Max. measured error" section as a
result of mechanical or acoustic vibrations in the 0.8 to 2.0 MHz range.
Influence of ambient
temperature
Current/voltage output
Temperature coefficient 100 µV/°C (µV/°F) or ±1 µA/°C (µA/°F)
Influence of air bubbles Air bubbles and particles are disturbance factors when measuring with acoustic surface
waves. The recommended installation positions and the "Dispersion" diagnostic
information largely prevent incorrect measurement results caused by air bubbles or
particles.
16.7 Installation
Chapter "Mounting requirements" →  16
16.8 Environment
Ambient temperature
range
Sensor 0 to +50 °C (+32 to +122 °F)
Transmitter 0 to +50 °C (+32 to +122 °F)