SGM LEKTRA PTU51 Manual

Ultrasonic level transmitter
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Technical Data
Housing material:
Mechanical installation:
Sensor protection degree:
Electrical connection:
Working temperature:
Pressure:
Power supply:
Power consumption:
Analog output:
Digital
communication:
Measure range:
[In case of non perfectly reflecting surfaces, the maximu distance
value will be reduced]
Blind distance:
Temperature compensation:
Accuracy:
±0,2% (of the measured distance)
Resolution:
Calibration:
VLW601 prog. module with 4
Warm-up:
LCD Display:
fig.1
fig.2
PTU51
Ultrasonic level transmitter
PP or PVDF
1"GAS M
IP68 or IP69K male connector
with 5/10/15/20m linking cable
-25° ÷ +75°C
da 0,5 a 1,5 bar (absolute)
4÷20mA max 750ohm
MODBUS RTU
0.3÷6m
digital from -30 to 80°C
not better than ±3mm
buttons
or by MODBUS RTU
30 minutes
typical
VLW601 wall mounting module
applied solution for the application
IP68
24Vdc
1,5W
0,3m
1mm
PTU51
Important!!! close to the sensor there is a "blind zone" of
0.3m where the instrument can't measure (see fig.3). To
reach a good and safe measurement, avoiding spurious
echoes (not reflected by the surface), take care of the
positioning of the PTU51 sensor and check that no obstacles
are interferring with the ultrasonic waves emission lobe (see
fig.2).
Install
perpendicularly
to the surface
825B124A
Mechanical Installation
Avoid to install in
Do not use
with foaming
case of product
products
level
<0.3m from the
sensor
fig.3
distance

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Summary of Contents for SGM LEKTRA PTU51

  • Page 1 0.3m where the instrument can’t measure (see fig.3). To reach a good and safe measurement, avoiding spurious echoes (not reflected by the surface), take care of the positioning of the PTU51 sensor and check that no obstacles are interferring with the ultrasonic waves emission lobe (see fig.2).
  • Page 2 Tab.1 2. CONNECTIONS Table 1 shows the cable color/signal corresponding 3. CONFIGURAZIONE The PTU51 configuration and calibration can be done in two different ways: - via MODBUS RTU by PC - by the keyboard VLW601 module 3.1 Via MODBUS RTU 3.1.1 MODBUS RTU PC connection (fig.10)
  • Page 3 Configuration 3.2 Via VLW601 3.2.1 Keyboard/display module VLW601 (fig.11) The VLW601 module can be the easy way to configure your PTU51. The VLW601module has a large matrix LCD (Fig.12) Also you can view the measure with: - 2 values (small characters) - 1 value (big characters) The operating manual allows an easy and fast start-up through the keyboard.
  • Page 4: Menu Structure

    PTU51 Programming menu structure 5. MENU STRUCTURE 5.1 Programming menu 1. SETUP – in this menù it’s possible to set the basic adjustment of the sensor 2. DISPLAY – in this menù it’s possible to setup the sensor display mode an adjust the contrast of LCD 3.
  • Page 5 PTU51 Programming menu structure Pag. 5 di 24 Page 5 of 16...
  • Page 6 PTU51 - Configuration 6. CONFIGURATION 6.1 SETUP (1) From “RUN” mode press then move the cursor on “SETUP” and confirm with Select the parameters by moving the cursor with , and confirm with 6.1.1 ACTUAL LEV. 4mA Press to associate the actual measure with 4mA output value;...
  • Page 7 PTU51 - Configuration 6.1.5 MEDIUM Press to access the settings change. There are 3 possible configurations: Solids - granular solids measurement Liquids - liquids measurement Liquids Pipe - liquids measurement in pipe reference Press to select the product type. Press to confirm 6.1.6 FILTER COEFFICENT...
  • Page 8: Display Values

    PTU51 - Configuration 6.2 DISPLAY (2) From “RUN” mode press , then move the cursor on “DISPLAY” and confirm with Select the parameters by moving the cursor with , and confirm with 6.2.1 DISPLAY VALUES Press to access the settings change.
  • Page 9 PTU51 - Configuration 6.2.1.b VALUES Press to access the settings change. Two values are displayed; it’s possible to choose which one is the primary and which is the secondary, each with a choice of 5 parameters With the button you can select data to display Press to confirm.
  • Page 10 PTU51 - Configuration 6.3 DIAGNOSTIC (3) From “RUN” mode press , then move the cursor on “DIAGNOSTIC” and confirm with With the button you can select the parameter to be programmed. Press to confirm. 6.3.1 FALSE ECHO DETECT Press to access the "FALSE ECHO DETECT" function.
  • Page 11: Peak Values

    PTU51 - Configuration 6.3.4 FROZEN GAIN Press to access the “FROZEN GAIN” function. It’s possible to fix a value of gain (from 1 to 255) and consequently disable the automatic gain control. Once the value is 000 the automatic gain control restarts to modify that value.
  • Page 12: Reset Values

    PTU51 - Configuration 6.3.6.II RESET VALUES Pressing erase all the stored values 6.3.7 OUTPUT SIMULATION Press to access the “OUTPUT SIMULATION” function. It’possible to force the analog output to a desired value. to modify that value. Press to exit The output returns to its normal function in only in “RUN” mode.
  • Page 13: Com Mode

    PTU51 - Configuration 6.4 SERVICE (4) From “RUN” mode press , then move the cursor on “SERVICE” and confirm with Select the parameters by moving the cursor with , and confirm with 6.4.1 OUTPUT SAFE MODE Press to access the “OUTPUT SAFE MODE” function.
  • Page 14 PTU51 - Quick Guide 6.4.5 CHECK FREQUENCY Press to access the “CHECK FREQUENCY” function. It’s possible to check the computed emission frequency of the sensor 6.4.6 F-WINDOW Press to access the “F-WINDOW” function. With the enabled AGITATORS function, it’s possible to set the threshold for acquisitions in succession that the same echo signal must reach to be considered valid, in the agitators working area.
  • Page 15 PTU51 - Quick Guide 7. QUICK GUIDE 7.1 0% Calibration For the 0% (4mA) calibration are possible 2 procedures: for self-learning (7.1.1) or by inserting the corresponding distance (7.1.2) 7.1.1 ACTUAL LEV. 4mA From “RUN” mode press then move the cursor on “SETUP”...
  • Page 16 PTU51 Warranty 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.

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