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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).
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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)
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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.
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.
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PTU51 Programming menu structure Pag. 5 di 24 Page 5 of 16...
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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;...
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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...
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.
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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.
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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.
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.
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.
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.
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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.
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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”...
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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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