SGM LEKTRA PTU05 User manual

Compact ultrasonic level transmitter
PTU05 mA GB
PTU05 Mechanica installation
Enclosure material: PP
Mechanical installation: 1” BSP
on request with PP DN100 flange screwed
Mechanical protection: IP68
Electrical connection: n.1 output cables (L=3m)
Working temperature: -25 a +75°C
Pressure: from 0,5 to 1,5bar (absolute)
Power supply: 24Vdc
Power consumption: 1W
Serial port: RS485
Max measure range: 5m
[The above distance must be intended from perfect
reflecting surfaces]
Blocking distance: 0.3m
Temperature compensation: PT100 from -30 to +80°C
Accuracy: +/- 1% not better than +/-2mm
Resolution: 1mm
Calibration: by SWING unit
Warm-up: 30 minutes normally
LEDs display: red LED for supply
yellow LED flashing for echo receiving
fig.1
PTU05
Technical Data
fig.2
A) B) C)
D) E)
Important close to the sensor there is a “blind zone” of 0,3m
where the equipment can’t measure.
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 0,3m, 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 application

The PTU05 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 “PTU05” 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 PTU05 shows led flashing (when echo is received).
To calibrate 4mA needs to put the PTU05 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 PTU05 at the distance at which you want 20mA output. Wait till the L3 is flashing
than: press simultaneously P1 and P2, release them and verify that L3 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 “LC” S/W operating manual
PTU05 Calibration
fig.D
fig.A

fig.B
fig.C
PTU05 Electrical Connections

Pump control, compact stand
alone unit. The Pump control
configuration is made from
SWING unit.
Non contact continuous level
measurement into tanks with
agitator
Measurement in vessels and
channels
SGM-LEKTRA
via Papa Giovanni XXIII, 49
20090 Rodano (Milano)
tel. ++39 0295328257 r.a.
telefax ++39 02295328321
e-mail: [email protected]
web: www.sgm-lektra.com
PTU05 Application
PTU05 Warranty
The warranty expires when damages they have provoked from
the use not quite or from not correct installations. The warranty
is valid for a period of 12 months from the sell behind presen-
tation of this manual. All the reparations in warranty will have
realized in our workshop in Rodano (MI), the costs of dismuonting
and reinstalling of the device and the costs of the transport will
be paid by the customer.
In conformity to the company and ceck procedure I certify
that the equipment:
PTU05 ............. Serial n. ......................
is conform to the technical requirements on Technical Data
and it is made in conformity to the SGM-LEKTRA procedure
Quality Control Manager
.............................................................................................
Production and ceck date
.............................................................................................
PTU05 Factory test certificate
The SGM-LEKTRA, reserves the right to make
improvements in the product described in this manual at
any time without notice