Siemens SITRANS LR150 - Page 102

Technical data and dimensions
15.1Technical data
Distance to installations > 200mm (7.874in)
Reflector Flat plate reflector
False reflections Biggest false signal, 20dB smaller than the useful signal
Deviation with liquids
Measuring distance
> 0.25m/0.8202ft
≤2mm
Measuring distance
≤0.25m/0.8202ft
≤10mm
Non-repeatability
a
≤2mm
Deviation with bulk solids The values depend to a great extent on the application. Binding
specifications are thus not possible.
a
Already included in the meas. deviation
Variables influencing measurement accuracy
Temperature drift - Digital
output
<3mm/10K, max.5mm
Temperature drift - Current
output
<0.03%/10K or max. 0.3% relating to the 16.7mA span
Deviation in the current
output due to digital/analogue
conversion
<15µA
Additional deviation through electromagnetic interference
According to NAMUR NE21 <80µA
According to EN61326-1 None
According to IACSE10
(shipbuilding)/IEC60945
<250µA
Characteristics and performance data
Measuring frequency W-band (80GHz technology)
Measuring cycle time
a
≤250ms
Step response time
b
≤3s
Beam angle
c
8°
a
With operating voltage U
B
≥ 24VDC
b
Time span after a sudden distance change from 1m to 5m until the output signal reaches 90% of the
final value for the first time (IEC61298-2). Valid with operating voltage U
B
≥24VDC.
c
Outside the specified beam angle, the energy level of the radar signal is 50% (-3dB) less.
Ambient conditions
Ambient temperature device -40…+70°C (-40…+158°F)
Ambient temperature display -25…+70°C (-13…+158°F)
Storage and transport
temperature
-40…+80°C (-40…+176°F)
SITRANS LR150
Operating Instructions, 08/2020, A5E50352155
93