Siemens SITRANS L Operating Instructions Manual page 49

Technical data and dimensions
12.1 Technical data
Input variable
Measured variable
Measuring range
Min. dielectric constant of the
medium
Minimum measuring distance
Frequencies 1, 2, 4
Frequency 3
a
Depending on application and medium
b
Depending on application and medium
c
Depending on the operating conditions
Output variable
Output
Physical layer
Bus specifications
Data protocols
Max. transmission rate
Deviation (according to DIN EN 60770-1)
Process reference conditions according to DIN EN 61298-1
Temperature
Relative humidity
Air pressure
Installation reference conditions
Distance to installations
Reflector
False reflections
Deviation with liquids
Non-repeatability
Deviation with bulk solids
a
Already included in the meas. deviation
Variables influencing measurement accuracy
Temperature drift - Digital
output
Additional deviation through
electromagnetic interference
acc. to EN 61326
42
The measured variable is the distance between the antenna edge of
the transmitter and the medium surface. The antenna edge is also
the reference point for the measurement.
a
0 ... 15 m (0 ... 49.21 ft)
εr ≥ 1.6
b
c
0 mm (0 in)
≥ 250 mm (9.843 in)
Digital output signal according to standard EIA-485
Modbus Application Protocol V1.1b3, Modbus over serial line V1.02
Modbus RTU, Modbus ASCII
57.6 Kbit/s
+18 ... +30 °C (+64 ... +86 °F)
45 ... 75 %
860 ... 1060 mbar/86 ... 106 kPa (12.5 ... 15.4 psig)
> 200 mm (7.874 in)
Flat plate reflector
Biggest false signal, 20 dB smaller than the useful signal
≤ 2 mm (measuring distance > 0.25 m/0.8202 ft) or ±10 mm
(measuring distance 0 ... 0.25 m/0.8202 ft)
a
≤ 2 mm
The values depend to a great extent on the application. Binding
specifications are thus not possible.
< 3 mm/10 K, max. 5 mm
< 50 mm
SITRANS LR110
Operating Instructions, 12/2020, A5E49829013