Function; Application And Measuring Ranges - Pepperl+Fuchs LUC-T Series Manual

3 Function

4 Application and measuring
ranges
2-Wire, 4 mA ... 20 mA "Loop-Powered"
LUC-T!!-!!!-!!!-!!
4-Wire, including mains power supply
LUC-T!!-!!!-!!!-!!
6
An ultrasonic emitter (sensor) mounted above the product is electrically excited and directs an
ultrasonic pulse through the air towards the product. This pulse is reflected back from the surface of
the product. The echoes partially reflected are detected by the same sensor, now acting as a receiver,
and converted back into an electrical signal. The time taken between transmission and reception of
the pulse – the time-of-flight – is directly proportional to the distance between the sensor and the
product surface.
The LUC-T is a compact ultrasonic transmitter for continuous non-contact level measurement in
liquids and in coarse-grained or pelleted solids (grain size from 4 mm/0.16 in). It has an integrated
temperature sensor for time-of-flight compensation. The LUC-T series consists of three transmitters,
which can be equipped with one of several electronic modules, with graduated measuring ranges from
0.25 m (0.82 ft) upwards
.
Sensor LUC-T10-G5
Process connection 1½"
Measuring ranges m/ft
liquid: 0.25-4/0.8-13
solid: 0.25-2/0.8-6.6
without I2
communication
HART IH
PROFIBUS-PA PA
Sensor LUC-T20-G5
Process connection
Measuring ranges
liquid: 0.25-5/0.8-16.4
solid: 0.25-2/0.8-6.6
power supply 180 V ...
250 V AC 127 V AC
without AC
communication
HART AH
PROFIBUS-PA PA
(2-wire)
LUC-T10-G6 LUC-T20-G5
2" 1½"
m/ft m/ft
0.4-7/1.3-23 0.25-4/0.8-13.1
0.4-3.5/1.3-11.5 0.25-2/0.8-6.6
I2 I2
IH IH
PA PA
LUC-T20-G6
1½" 2"
m/ft m/ft
0.4-8/1.3-26
0.4-3.5/1.3-11.5
90 V ... 18 V ... 180 V ... 90 V ...
36 V DC 250 V AC 127 V AC
UC DC AC UC
UH DH AH UH
PA PA PA PA
LUC-T20-G6 LUC-T30-FA
2" 4"
m/ft m/ft
0.4-7/1.3-23 0.6-15/2-49
0.4-3.5/1.3-11.5 0.6-7/2-23
I2 –
IH –
PA PA
LUC-T30-FA
4"
m/ft
0.6-15/2-49
0.6-7/2-23
18 V ... 180 V... 90 V ... 18 V ...
36 V DC 250 V AC 127 V AC 36 V DC
DC AC UC DC
DH AH UH DH
PA PA PA PA