Technical Instructions for
Correlation Sensors
Page 30
Correlation Sensors – Rev. 07 as of 20.04.2016
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Zero point drift
absolutely stable zero point
Error limits
(per scan layer)
<1 % of measurement value (v > 1m/s)
< 0.5 % of measurement value +5 mm/s (v <1 m/s)
Minimum filling level
6,5 cm
Sonic beam angle
±5 degrees
Level measurement – Water ultrasonic
Measurement range
0 to 200 cm (0 to 6.56 ft)
Zero point drift
absolutely stable zero point
Measurement uncertainty
< ±2 mm
Level measurement - Pressure
Measurement range
0 to 500 cm
Zero point drift
max. 0.75 % of final value (0–50 °C)
Measurement uncertainty
<0.5 % of final value
Temperature measurement
Measurement range
-20 °C to +50 °C (-4 °F to 122 °F)
Measurement uncertainty
±0.5 K
4.6
Air Ultrasonic-Sensor, type OCL-L1
Measurement principle
Ultrasonic transit time
Measurement frequency
120 kHz
Protection rating
IP 68
Ex-Approval
II 2 G Ex ib IIB T4 Gb (ATEX)
Ex ib IIB ic (IECEX)
Operating temperature
-20 °C to +50 °C (-4 °F to 122 °F)
-20 °C to +40 °C (-4 °F to 104 °F) for applications in Ex Zone 1
Storage temperature
-30 °C to +70 °C (-22 °F to 158 °F)
Operating pressure
max. 1 bar
Cable length
10/15/20/30/50/100 m
Type of cable
LiYC11Y 2x1.5 + 1x2x0.34
Outside cable diameter
8.4 mm ±0.25 mm
Type of construction
Wedge sensor for installation in channel vertex
Medium contacting
materials
Polyurethane, stainless steel 1.4571, PPO GF30, PA
Measurement range
0 to 200 cm (0 to 6.56 ft)
Dead zone
(as from ground plate)
14 cm (5.51 in)
Measurement uncertainty
< ±0.5 % of final value
Temperature measurement
Measurement range
-20 °C to +50 °C (-4 °F to 122 °F)
Measurement uncertainty
±0.5 K
