SGM LEKTRA PTU15 User manual

825B073G
PTU15 Mechanical installation
PTU15
Compact ultrasonic level transmitter
To reach a good and safe measurement, avoiding spurious echo
(not reflected from the surface to measure) need to take care about
the sensor sensibility volume in the sound path, no obstacles or
objects must be present into the sensibility volume (lobe), see fig.2/
D/E.
On fig.2 some suggestion:
1)Install perpendiculary at the surface, see fig.2/A
2)Don’t use with foaming products, see fig.2/B
3)Avoid installation where the product distance could be less
than 0,7m, see fig.2/C
4)No obstacles or objects must be present into the sensibility
volume, see fig.2/D/E
applied solutions for the applications
TECHNICAL DATA
Enclosure material: PP
Mechanical installation: 1” BSP
on request with PP DN150 PN6 flange screwed
Mechanical protection: IP68
Electrical connection: n.1 output cables (L=3m) or
IP68 male connector with linking cable
Working temperature: -25 ÷ +75°C
Pressure: from 0,5 to 1,5bar (absolute)
Power supply: 24Vdc
Power consumption: 1W
Analog output: 4÷20mA max load 750 ohm
Serial port: RS485
Max measure range: 0,7÷12m
[The above distance must be intended from perfect
reflecting surfaces, in contrary case decreases the
maximum measurable distance]
Temperature compensation: PT100 from -30 to +80°C
Accuracy:
not better than +/-2mm
Resolution: 1mm
Calibration: two push-buttons, for self-acquisition
or by SWING unit
Warm-up: 30 minutes normally
LEDs display: red LED for supply
yellow LED flashing for echo receiving
PTU15 Overall dimensions
fig.2
A) B) C)
D) E)
fig.3
fig.4

PTU15 Electrical Connections
SWING connections
No special cable or coax-cable are requests, and no
practice distance limits.
For the Vdc power supply take in consideration that the
negative of the power supply is electrically connected to
the negative output current.
A special J-box with P1 and P2 calibration push buttons
built-in is available on request.
The picture below shows the connectors and the push-
buttons for the 4÷20mA version calibration.
Available a RS485 serial port to communicate to PC or
PLC.
On request the “SoniSoft” S/W communication for PC and
the RS485/RS232 conversion module are available.
Analog output version
fig.7
fig.6
fig.5

PTU15 Calibration
The PTU15 calibration can be done in two different ways:
a) By means the P1 and P2 push-buttons.
b) With PC or PLC soft. communication with RS485 port.
a) By means the P1 and P2 push-buttons
To calibrate by-means 2 push-buttons P1 and P2 (see
figure), needs to put the “PTU15” respectively at the
distance refers to 0% and 100% level, in order to
memorise the relevant distance electronically.
In the condition of normal working the PTU15 shows led
flashing (when echo is received).
To calibrate 4mA needs to put the PTU15 at the distance
at which you want 4mA output current. Wait till the led is
flashing than: press simultaneously P1 and P2, release
them and verify that led will stay fix lightened.
Press two times P1, release it and wait until led is flashing
again before move the sensor. The distance has been
memorised and associated to 4mA output.
To calibrate 20mA needs to put the PTU15 at the distance
at which you want 20mA output. Wait till the led is flashing
than: press simultaneously P1 and P2, release them and
verify that led will be fix lightened.
Press two times P2, release it and wait until led is flashing
again before move the sensor. The distance has been
memorised and associated to 20mA output.
b) With PC or PLC soft. communication with RS485 port
Refers to the “SoniSoft” S/W operating manual
Calibrations via SWING RS485 connection
Refers to the “SWING” operating manual
fig.8
fig.9
fig.10
fig.11

PTU15 Warranty
PTU15 Factory test certificate
Non contact continuous
level measurement into
tanks with agitator
Pump control
compact stand
alone unit, only
through SWING
unit connection
Products supplied by SGM LEKTRA are guaranteed for a
period of 12 (twelve) months from delivery date according to
the conditions specified in our sale conditions document.
SGM LEKTRA can choose to repair or replace the Product.
If the Product is repaired it will mantein the original term of
guarantee, whereas if the Product is replaced it will have 12
(twelve) months of guarantee.
The warranty will be null if the Client modifies, repair or uses
the Products for other purposes than the normal conditions
foreseen by instructions or Contract.
In no circumstances shall SGM LEKTRA be liable for direct,
indirect or consequiential or other loss or damage whether
caused by negligence on the part of the company or its
employees or otherwise howsoever arising out of defective
goods
PTU15 ApplicationPTU15 Order code
In conformity to the company and ceck procedure I certify
that the equipment:
PTU15 ............. Serial n. ......................
is conform to the technical requirements on Technical Data
and it is made in conformity to the SGM-LEKTRA procedu-
re
Quality Control Manager ...............................................
Production and ceck date
...............................................
documentation subject to technical change with no prior warning
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fig.12
fig.13
fig.14 waterway level measurament
SGM LEKTRA s.r.l.
Via Papa Giovanni XXIII, 49
20090 Rodano (Milano)
tel. ++39 0295328257 r.a.
fax ++39 0295328321
e-mail: [email protected]
web: www.sgm-lektra.com