Sensopress-istr
Contents
1. SAVE 900 cm mode fig 17 or SAVE 100 cm mode fig 21 Make certain that the sensor is subjected to the level indicated 900cm or 100 cm It s possible to save the reading of the sensor by pressing the YES button If the operation has been successful you will have a visualization as in fig 22 on the contrary you will have a visualization as in fig 23 in the case of a failure in the operation a default value is used That assures an acceptable measurament bat obviously not as good as when the calibration has been successful The failure may be due to a real level that is quite different from the one indicated or due to some anomaly in the subsystem that makes the pressure measurement Fig 22 Fig 23 With the NO button you can return to the AUTO mode this takes place if no button is pushed edition 2 09 2004 code 5878 13 16 ELECTROMAGNETIC INTERFERENCES If the device is placed in an environment where there is a lot of electromagnetic noise present or if the contacts of the relay supply some particular loads the device may show some strange anomalies The software is able to take measures to restore the correct functioning In particular in the AUTO mode the display is reset at regular intervals of 9 seconds This is the maximum duration of a written message deteriorated due to NOISE In the case of particularly strong inductive loads that is when the disturbances are such that there are frequent an2. the device is turned on the protection of the device is deactivated On the display you will see shown PROTECT DISABLED if the protection is deactivated PROTECT ENABLE if the protection is activated To activate the protection it is necessary to fig 10 ga eFeonsopress LCD Special Protection turned on by LUG E Fig 10 Enter PROTECT mode Press the YES key until the wording PROTECT ENABLE appears protection turned on 3 Press MENU key to memorize N Once the password has been activated it will be requested every time you wish to change a parameter To disable the protection proceed as follows fig 11 Protection disabled Fig 11 1 Return to the PROTECT mode 2 Enter the password pressing the YES NO Keys in the following sequence NO YES YES YES NO 3 Press the YES key until the word PROTECT DISABLED appears protection disabled 4 Press Menu key to memorize edition 2 09 2004 code 5878 9 16 PASSWORD entry MRC Lo Fig 12 NOTE If you decide to activate the protection device to access each mode on the display the words ENTER PASSWORD will be visualized fig 12 that is to say that a password made up of five characters will be requested to be introduced with the combination of the buttons YES amd NO if the combination is correct you will be able to access that mode and thus modify it if the combination should resu
3. Sensopress LCD Special English 0080800898999 edition 2 09 2004 code 5878 1 16 Sensopress LCD with sensor 10 60 C 1 FS Housing NORYL ULVO S Dimensions mm tosx90x73 S Weight gr 50 Device Sensor Weight o S Sensor Provided o Sensor for Sensopress LCD Housing Stainless Stell AISI 316 PRS00B1A1M20000 Dimensions mm 82K Weight gr 4 Power Supply Voltage 15 30 V 20mA max Output Current 4 20mA Rt 250 OHM max Thermal Zero Shift 0 02 f s C Thermal Zero Span 0 01 f s C Can be used in all type of water with water ph between 5 9 For use in other kinds of liquids contact the factory Stability 0 3 f s year a 25 C Sensopress is a high technology electronic gauge and level regulator that can be used in sandy drinking water in liquid food products or with the help of adequate system solutions in dirty and corrosive liquids Measurements rely on a very sensitive pressure sensor whose signal transformed and processed by a microcontroller is converted into water column height measured in centimeters Note In fact all displayed values are in mBar The correct value in cms of water can be obtained by increasing the pressure in mBar by 2 1 973 at 4 C edition 2 09 2004 code 5878 2 16 FRONT PANEL of the Sensopress LCD Special The front panel of the Sensopress equipped comes with an LCD display on which are visualized all the information relative to the
4. device as well as three push buttons with which it is possible to interact and modify the parameters establish the points of intervention at which to activate or deactivate a command relay of any kind of power equipment pump motor or signal lights alarms etc The display of the device when turned on visualizes the name of the manufacturer the version of the software and the name of the product MAC3 V12 SENSORPRESS FIG 1 Fig l Sensopress presents seven functioning modes in order AUTO LOW HIGH MANUAL DISPLAY PROTECT CALIB In the following table the name of the mode is indicated with its corresponding operation that is carried out Modalit Operazione eseguita AUTO gt Indicates the level of water in the tank high and low threshold LOW gt Low threshold setting HIGH gt High threshold setting MANUAL gt Manual setting of the eclectrovalve DISPLAY gt Regulator of the retroillumination of the display PROTECT Insertion for the device protection CALIB gt Measurement of the water level scale edition 2 09 2004 code 5878 3 16 AUTO fig 2 Relay position Level measurement Auto mode Low threshold High threshold Fig 2 After having turned on the device the AUTO mode is the first to be visualized The name of the mode AUTO the position of the relay OFF O or ON the liquid level measured in cm in which the sensor is immersed Lev 288 cm the low thereshold Low 027 and hi
5. equest to pass to another mode is displayed NOTE Attention in the MANUAL mode the device does not return to the AUTO mode edition 2 09 2004 code 5878 7 16 REGULATION DISPLAY DISPLAY mode fig 8 Present mode Retroillumination Turned ON Fig 8 Present mode Power save mode Lil a t DI nali Redi mo a by Lio le Fig 9 The DISPLAY mode allows you to control the state of the backlighting of the display When turning on the device the backlighting is inserted and will turn itself off automatically after five minutes of non use By pressing the YES key it s possible to set up the backlighting mode By using the formulation in fig 8 the backlighting is continuous whereas when set up as in fig 9 it is time scanned an elapse of 5 min from the last button pushed The timer that reactivates the backlighting that is time scanned starts again by pushing any key On the other hand with the MENU key you pass to the request to change mode if no key is pressed the device returns to the AUTO mode edition 2 09 2004 code 5878 8 16 INSERTING THE PROTECTION SETTING Protection Mode password NO YES YES YES NO The password of the device is inserted at the factory and cannot be modified In the PROTECT Mode there is the possibility of activating or deactivating the protection of the device in such a way as to impede non authorized personnel to modify the parameters when
6. gh threshold High 156 of the intervention established by the user The buttons YES NO are not in function By pressing the button MENU on the display the present mode and the request to transfer to another mode are indicated Fig 3 Table 1 Present mode Request for transfert to another mode table1 Table 1 Go to DISPLAY Go to PROTECT Go to CALIB Once having picked out the mode that you wish to modify by pressing the button YES you can access it By pressing the button NO however or by waiting about ten seconds the device returns to the AUTO mode edition 2 09 2004 code 5878 4 16 SETTING THE HIGH AND LOW THRESHOLD Low Threshold Low Mode fig 4 Present mode High threshold Fig 4 Low threshold The LOW mode allows you to set the minimum point of intervention On the display is shown the name of the mode LOW the present maximum threshold level defined by the user HIGH 156 cm and the minimum threshold level to be set LOW LEVEL 031 cm By pushing the buttons YES NO it s possible to increase or decrease the minimum threshold level desired The minimum threshold level cannot excede the maximum level if by mistake the minimum level should excede the high level the value of the minimum threshold level will begin again from 000 With the button MENU the value inserted is memorized and the request to pass to a different mode is displayed on the front panel if no button is p
7. lt incorrect you will not be able to effect an change The password is inserted in the factory with the sequence NO YES YES YES NO It can not be modified edition 2 09 2004 code 5878 10 16 CALIBRATION OF THE LEVEL WATER SCALE The instruments that leave the MAC3 plant are calibrated that is to say that they are able to measure the water level in the field of measurement forseen and with the specifics indicated by MAC3 With this in mind no intervention on the part of the user is required For various reasons such as the derating of the components the substitution of the sensor a variation in the position of the sensor etc the need to effect a new calibration may be necessary This can be effected upon request by the MAC3 technicians A useful alternative that can be used is an operation that is furnished with the device with just this purpose in mind thanks to which the user can autonomously effect a calibration You must have the possibility to subject the pressure sensor to two levels that are the most precise possible as specified here as follows CALIB In the CALIB mode you can save the reading effected by the sensor subjected to zero level and subjected to the maximum level can be selected between 100Cm and 900Cm In this way the reading results to be correct in the entire forseen field of measurement When accessing this mode you have the visualizzation as seen in fig 15 B
8. omalies we suggest the use of a snubber circuit connected in parallel to the contact of the load You make a snubber circuit by mounting a resistor in series to a condenser Fig 24 shows an example of the wiring diagram Reccomended values R1 47 Ohm W C1 polyester 0 1uF 250 Vac Fig 24 Alimentazione Power supply edition 2 09 2004 code 5878 14 16 SERIAL CONNECTION Optional The Sensopress has the possibility of being connected to a computer by means of a serial port RS232 the data transmitted from the device can be visualized with the demonstrative software Fia ga oo 3 i Yos ul ensopress LCD Special J Terminale per ricezione via seriale RS232 da sensopress LED Special jf COMI EE Livello Livello Livello attuale minimo massimo T201 IGC OU EM Sensopress LCD Special fig 13 which can be downloaded from the MAC3 website www mac3 it Fig 13 It s also possible to use any communication software while keeping in mind the following parameters Byte per second bps 300 Data bit 8 RS232 standard connections 00000 0000 Welding view edition 2 09 2004 code 5878 15 16 ELECTRICAL DIAGRAM Sensore Sensor 15V RETURN RS232 DAANAN AXX RELE 10 A 250W DYDD DOCOMO B Alimentazione Power Supply edition 2 09 2004 code 5878 16 16
9. ushed the device returns to the AUTO mode after a few seconds edition 2 09 2004 code 5878 5 16 High Threshold High Mode fig 5 Present mode Low threshold by LU I La ed g sl High Threshold Fig 5 The High mode allows you to set the maximum point of intervention On the display is shown the name of the mode HIGH the present low threshold level LOW 031 cm and the maximum level to be set HIGH LEVEL 156 cm By pressing the buttons YES NO it s possible to increase or decrease the maximum threshold level desired the maximum level must not be inferior to the minimum threshold level If this level is reached the device begins again from the point 899 cm with the MENU button the value that was inserted is memorized and the request to pass to a different mode is displayed on the front panel if no button is pushed the device returns to the AUTO mode after a few seconds edition 2 09 2004 code 5878 6 16 MANUAL SETTING MANUAL MODE fig 6 fig 7 present mode Relay position OFF Fig 6 Request for transfert to relay ON Present mode Relay position ON Fig 7 Request for transfert to relay OFF On the display is shown the name of the mode MANUAL and the position of the relay RELE OFF RELE ON In the MANUAL mode by pushing the button YES it s possible to intervene on the rele relay moving from ON to OFF and vice versa The button NO is disabled With the button MENU the r
10. y pressing the MENU button it s possible to select one of the submenus as shown in fig 15 16 17 passing ciclycally Fig 15 Fig 16 Fig 17 edition 2 09 2004 code 5878 11 16 SAVE PRESS ZERO mode fig 15 Make certain that the sensor is subjected to the zero level It s possible to save the reading of the sensor by pressing the YES button If the operation has been successful you should have the visualizzationas seen in fig 18 otherwise you will have the visulizzation as seen in fig 19 in the case of an unsuccessful attempt a default value is used That assures an acceptable measurament bat obviously not as good as when the calibration has been sucessful The failure may be due to a real level that is not admissible as a zero level or some anomaly in the subsystem that makes the pressure measurement Fig 18 Fig 19 The 100cm 900 cm Y mode fig 16 By pressing the YES button it is possible to select the maximum level at which the calibration is made cyclically When fig 16 is visualized the system is predisposed to save a value that it considers to be 900cm When fig 20 is visualized the system is predisposed to save a value that it considers to be 100cm In this case by pushing the MENU button it is possible to select one of the submenus shown in the fig 15 20 21 by passing cyclically from one to the other edition 2 09 2004 code 5878 12 16 Fig 20 Fig 21 The
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