Technical data and dimensions
12.1 Technical data
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
≤ 250 ms
Step response time
≤ 3 s
Beam angle
8°
With operating voltage U
B
≥ 24 V DC
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.
Outside the specified beam angle, the energy level of the radar signal is 50% (-3 dB) less.
Ambient conditions
Ambient temperature
-40 … +60 °C (-40 … +140 °F)
Storage and transport
temperature
-40 … +80 °C (-40 … +176 °F)
Mechanical environmental conditions
Vibrations (sinusoidal
vibrations)
Class 4M8 (5 g at 4 ... 200 Hz acc. to IEC 60271-3-4)
Impacts (mechanical shock)
Class 6M4 (50 g, 2.3 ms acc. to IEC 60271-3-6)
Impact resistance
IK07 acc. to IEC 62262
Process conditions
Process temperature
-40 … +60 °C (-40 … +140 °F)
Process pressure
-1 … 3 bar (-100 … 200 kPa/-14.5 … 43.51 psig)
Electromechanical data
Cable entry
SITRANS LR140
Operating Instructions, 08/2020,
A5E50352144
47
