SDT 170 MTT User Manual
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SDT 170 MTT User Manual

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  • Page 2 170M TT doit être exclusivement alimenté par sa batterie. L’usage du chargeur est alors strictement interdit. Bij het gebruik van de SDT 170 MTT dient het toestel uitsluitend met de batterij gevoed te worden. Het gebruik van de lader is dan strikt verboden...
  • Page 3 SDT 170 MTT deve essere esclusivamente alimentato dalla sua batteria. L'utilizzo del caricabatterie è allora strettamente vietato. En su utilización, el aparato SDT 170 MTT debe ser abastecido exclusivamente por su batería. La utilización del cargador está entonces estrictamente prohibida.
  • Page 4 Ultrasonic system SDT 170 MTT for tightness controlling of underground fuel tanks and their associated pipe work Version with acquisition of reference values User’s manual...
  • Page 5 Fourth edition, US English. All rights reserved: No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without the written permission of SDT International n.v. s.a. The information herein is believed to be accurate to the best of our knowledge.

  • Page 6: Table Of Contents

    Interconnection of elements ..............23 Principle....................23 Overview of the SDT 170 MTT............ 27 Full view ....................27 The keyboard ................... 28 Full view of the SDT 170 MTT ..............29 Display ..................... 30 Fields of use for the SDT 170 MTT ............31...
  • Page 7 Appliances initial adjusting ............... 78 12.2 Entering the test informations..............79 12.3 Carrying out the tightness test in data recording mode ......81 12.4 Transferring data from the SDT 170 MTT to the PC ........ 84 12.5 Consulting uploaded data ................ 87...
  • Page 8 The resistance to distortion calculation ..........103 14.3 Link bewteen boiling point and pressure ..........109 Technical specifications ............113 15.1 SDT 170 MTT..................113 15.2 External ultrasonic sensors ..............114 15.3 Interface box (Switchbox) ............... 115 Certificate of conformity of the sensors and interface box... 117 Declaration of conformity in the European Union ....
  • Page 9 The undisputed leader in its field, SDT International designs and manufactures a wide range of measuring instruments for ultrasonic detection and the evaluation of various other physical parameters. The company’s expertise covers a wide range of applications: tightness tests on...

  • Page 10: The Ultrasonic System Sdt Tanktest

    The SDT 170 MTT system Two control procedures have been applied to the version named SDT 170 MTT. • A control procedure in free mode, without recording data.

  • Page 12: Technical Advantages Of The Tightness Control By Ultrasounds

    The test can be carried out whatever the height of the liquid (max. 2 meters) except if the tank is 100 % full. • The SDT TankTEST is not influenced by temperature, humidity or the angle of the tank. It is just as effective in dry environments as in wet.
  • Page 13 "in the field" and is able to perform thousands of checks. Portable • The pump and the 2 boxes are easy to transport. The SDT 170 MTT measuring appliance only weighs 0.7 kg. • The Ni-Cd power pack provides total freedom of movement (8 to 10 hours autonomy).

  • Page 14: The User's Manual

    The User’s manual is designed as an educational guide and reference tool for anyone who wishes to use the SDT 170 MTT equipment in the framework of controlling tightness of underground tanks. SDT produces this manual with the sole purpose of supplying simple and accurate information to the user.
  • Page 16 part equipmentx...

  • Page 18: Definitions

    4. Definitions OUND AND ULTRASOUND Sound is generally produced by a vibrating body. The surrounding air participates in its movement creating waves around it, which transmit the sound energy. The frequency, measured in cycles per second or hertz, is the number of sound wave vibrations in a second.

  • Page 19: Control Principle

    ONTROL PRINCIPLE Listening is understanding Using sensitive sensors, the SDT 170 MTT detector picks up specially defined frequencies to detect any tightness problems in the underground tanks, both above the level and in the liquid itself. It converts them into audible frequencies making an unknown part of his environment perceptible to the human being.

  • Page 20: Delivered Equipment

    • One RS 232 C cable. • One software for data transfer from SDT 170 MTT to PC delivered on a CD Rom. (2) Two ultrasonic sensors They must be installed inside the tank. These 32 mm Ø sensors are watertight, ex-proof and resistant to hydrocarbons.

  • Page 21: Available Options

    (4) Mechanical bush To be fitted to the manhole panel with a 2 inch male or female threaded connection. (5) Camlock Connection between the vacuum pump and the mechanical bush allowing the depth adjustment of the sensors.. (6) Suction hose Connection in plastic, between the vacuum pump and the camlock.

  • Page 22: Options For Hazardous Environments

    5. Delivered equipment PTIONS FOR HAZARDOUS ENVIRONMENTS For tanks containing flammable and/or explosive liquids, the pump and the hoses are replaced by the following flameproof (EX-PROOF) equipments: (1) A bush ENIVAC ex-proof vacuum pump ATEX approved. Max. flow.16 m Negative pressure: safety valve calibrated to ± 250 mBar 0.45 kW single-phase EEexd motor Depression manometer.

  • Page 23: Table Of The Equipment Composition

    The full equipment is made up of the following elements, most of which are brought together in 2 transport boxes. Designation SDT 170 MTT detector, with one battery block inside the detector, rubber protection and user’s manual, including: - Headphone, noise isolated.
  • Page 24 5. Delivered equipment 2b 5 Figure 4 : The delivered equipment.

  • Page 26: Detection Principle

    This is after the tank has been set under negative pressure and using two sensitive sensors, one in the liquid and the other above the level of the liquid. Towards pump SDT 170 MTT Sensors Tank to be controlled Figure 5 : Principle of ultrasonic tightness controls.
  • Page 27 1. If the tank is tight, no signal is detected on either sensor; the value displayed on the SDT 170 MTT shall be near or equal to the reference value measured before the setting under negative pressure of the tank.
  • Page 28 6. Detection principle Intrinsically safe Suction hose interface box Drain hose Pump Stuffing boxes Camlock Foul air Output with SDT 170 MTT exhaust anti-flame return Mechanical bush Headphone Flexible Threaded connection (optional use) Emerged sensor (black cable) Tank Immersed sensor (red cable) Figure 6: Interconnection of the various parts.

  • Page 30: Overview Of The Sdt 170 Mtt

    LCD display. RS 232C connector and cap. Holster. Audio output connector (minidisc, Keyboard. headphones, PC, analyzer). Backlight switch.. Sensor protective cap. On/Off switch. External sensor connector. Strap carrying rings. Figure 7 : The visible elements of the SDT 170 MTT.

  • Page 31: The Keyboard

    HE KEYBOARD The keys correspond to the following functions: Function First press: access to the menus and sub-menus. Second press: return to previous or basic screens. Increase amplification level. Scroll up through menus. Increment figures. Reduce amplification level. Scroll down through menus and sub-menus. Decrement figures.

  • Page 32: Full View Of The Sdt 170 Mtt

    7. Overview of the SDT 170 MTT SDT 170 MTT ULL VIEW OF THE Figure 8 : The function of the main components of the SDT 170 MTT.

  • Page 33: Display

    4. 3. Extension to be fitted between 2 and 4. Figure 9 : Precision accessories to be mounted on the sensor of the SDT 170 MTT. ISPLAY In addition to the measurement, the display indicates cyclically, in the top right...

  • Page 34: Fields Of Use For The Sdt 170 Mtt

    Figure 10: Location of icons for date, time, battery state and memory used. SDT 170 MTT IELDS OF USE FOR THE As the SDT 170 MTT is a multi-purpose model, it may be used for various types of controls and measurements: Tank tightness controls The present guide has been specifically written for this kind of control.
  • Page 36 part Installingx applicationx...

  • Page 38: Installing The Graphs & Measurements Application

    The Graphs & measurements application is provided on CD-ROM supplied with the hardware. Once installed on the PC hard disk, this application allows you • Transfer data memorized by the SDT 170 MTT to the PC. • View them in text format.
  • Page 39 APP00 The window opposite is displayed Specify the destination directory of the application; the default directory being C:\Program Files\SDT\170MTT. Click on the Next button to launch installation. Valid the selected directory in the previous step by clicking on the Next button or modify by clicking on the Change button.
  • Page 40 8. Installing the Graphs & measurements application Click on the Install button to launch the installation procedure. The barograph displays the progress of the installation. With the check box Launch the program checked before clicking Finish, the application is immediately launched.

  • Page 41: Parameterizing The Application

    ARAMETERIZING THE APPLICATION This procedure enables parameterization of the contact details of the SDT 170 MTT owner, which will be displayed (printed) automatically at the top of all pages of the report (see Figure 11). Figure 11: Locating data in the top of the sheet, right hand side.
  • Page 42 8. Installing the Graphs & measurements application In the window displayed, enter the data specific to the SDT 170 MTT owner (company or own name): Company: name. Address: postal address. City: town/city. Zipcode: zip code. City: city. Country: country. Tel: telephone number.

  • Page 44: Interconnecting To Sdt 170 Mtt Through Usb

    9. Interconnecting to SDT 170 MTT through USB The SDT 170 MTT detector is equipped with an RS 232C connector (see page 27, Figure 7, reference 9) for transferring data from the device to a PC. However, on some of today’s computers, this connector is removed. As transfer by RS 232C is...

  • Page 45: Parameterizing The Usb Port

    RS 232C cable supplied with SDT 170 MTT. • Connection from USB socket of converter to a free USB socket on PC. ARAMETERIZING THE PORT Proceed as follows to parameterize the USB port to which the SDT 170 MTT is connected: Step Screen Action...
  • Page 46 9. Interconnecting to SDT 170 MTT through USB Click on the + sign in Ports (Com and LPT). Double-click on the icon for the installed USB converter. In the window displayed, click on the Port settings tab. Define parameters follows (by...
  • Page 47 NB: if, after a further communication test, no communication is possible between the SDT 170 MTT and the PC, you must modify the PC’s communication port. Proceed as follows: Carry out steps 1 to 7 described above. window displayed (illustration opposite), click on the Advanced button.
  • Page 48 part Carrying out the testx...

  • Page 50: Installation Procedure

    10. Installation procedure 10.1 ARNINGS When the equipment is used in places where gases, vapours, mists, or flammable dust may be present in the atmosphere, safety precautions must be taken to reduce the risk of explosion due to ignition caused by arcing, sparks or hot surfaces, either in normal service or in specific default conditions.
  • Page 51 • Check the status of the SDT 170 MTT detector batteries. The remaining capacity in the battery is expressed by an icon (the amount of blackening corresponds to the remaining capacity of the battery). :...

  • Page 52: Installing Pump And Sensors

    10. Installation procedure 10.2 NSTALLING PUMP AND SENSORS For safety reasons, before testing a tank, one must ensure using an explosimeter that there are no explosive gases in the surrounding air. Contrary to what you expect, the tank could contain an inflammable and/or explosive product.
  • Page 53 Then connect the interface and the headphone to the SDT 170 MTT detector. Sensor cables Interface box Headphone plug Interface plug SDT 170 MTT Figure 16 : The interface is positioned under the SDT 170 MTT and connected to the latter and the two ultrasonic sensors.
  • Page 54 10 The 2 sensors must be tested and measured (display of the SDT 170 MTT). This measure is done by rubbing the upper part of the sensor with the thumb or rubbing it against an item of clothing for example.
  • Page 55 Figure 19 : Arrow signs will disappear when the level of amplification is right and the measurement value reaches at least 40 dBµV when pressing the thumb on the sensor. In the event that the minimum value of 40 dBµV has not been attained, the appliance along with the set of sensors should be returned to the manufacturer to be checked.
  • Page 56 10. Installation procedure 12 Connect the suction hose onto the vacuum pump and onto the camlock. Also fit the drain hose to the pump outlet. The pump suction outlet is the one where the safety valve is. Suction hose Drain hose Pump Camlock Foul air...
  • Page 57 Figure 22 : The interface acts as a galvanic separation between the electrical parts linked to the inside of the tank (sensors) and the measurement device (SDT 170 MTT). Tanks that are forbidden to be put under depression The following tanks cannot be put under depression: •...
  • Page 58 Connection to the connector The connection box is fitted with a fixed cable and 7 pin LEMO plug for connection to the SDT 170 MTT. The two cables from the sensors must be connected to the BNC sockets. Plugging of the LEMO plug into the connector 1.

  • Page 60: Procedure For Carrying Out The Tightness Test In Free Mode

    Pressing the button at this point does not work. 11.1 PPLIANCES INITIAL ADJUSTING Switching the detector on Proceed as follows: N° Screen Action Switch the SDT 170 MTT on. The display is on. A reading can be displayed according detector configuration.
  • Page 61 Selecting the working language Proceed as follows: N° Screen Action The display being on, push on the key. The Main menu being displayed, push several times on this key until reaching the last menu line. Note: this explanation does not display any text in the menu.
  • Page 62 11. Procedure for carrying out a tightness test in free mode Setting the automatic switch-off delay at maximum duration Proceed as follows: N° Screen Action The display being on, push on the key. The Main menu being displayed, select Parameters. Push this key.

  • Page 63: Taking And Recording Of The Reference Values

    AKING AND RECORDING OF THE REFERENCE VALUES The SDT 170 MTT is a detector having a high degree of accuracy of the measurements. Its amplification level being important, it has sensitiveness to the temperature. It is therefore advisable to take a reference value (dBµV) on each of the two sensors before the setting under negative pressure of the tank.
  • Page 64 11. Procedure for carrying out a tightness test in free mode The screen Base Measure is displayed. Confirm. Check that the environment is quiet (no audible or to come interference noise, because already visually identifying) 59è Confirm. If not, wait or quit the menu by pushing for a later operation recovery.

  • Page 65: Selecting The Max Value Function

    (next paragraph). 11.3 ELECTING THE AX VALUE FUNCTION Before proceed to the effective test in free mode, it is imperative to set the SDT 170 MTT in Max value mode, so as to display the maximal values. Proceed as follows. N°...

  • Page 66: Tightness Testing Under The Liquid Level

    11. Procedure for carrying out a tightness test in free mode 11.4 IGHTNESS TESTING UNDER THE LIQUID LEVEL Refer to the flow chart on page 71 for a visual explanation of the procedure. Proceed as follows: NB: When the detector is switched on, the numerical value shown depends on the ambient noise level.
  • Page 67 Switch on the vacuum pump to overcome the hydrostatic pressure of the liquid (max 250 mBar) using a simple calculation based on the density of the liquid. To calculate the value of the vacuum to be applied in the tank, take the density of the water as a reference.
  • Page 68 When a sufficient vacuum is reached, stop the pump. Check that the SDT 170 MTT is set to maximal sensitivity (A = 90). If not, push the key.
  • Page 69 Disconnect the connector of the interface box and connect the flexible sensor. Slide the flexible sensor connected to the SDT 170 MTT along the contour of the manhole cover and on the different connections fitted on this cover. If necessary, make sure these elements...
  • Page 70 11. Procedure for carrying out a tightness test in free mode Disconnect flexible sensor connect the connector of the interface box. Take the reading of the signals again on the immersed sensor by pressing the key: - If the noise has disappeared and the value measured is equal or near the reference value: the tank is tight below the level of the liquid and the tightness...

  • Page 71: Tightness Testing Above The Liquid Level

    11.5 IGHTNESS TESTING ABOVE THE LIQUID LEVEL Refer to the flow chart on page 71 for a visual explanation of the procedure. Proceed as follows: N° Screen Action Push the key to display the label Black Sensor on the upper left corner of the display.
  • Page 72 Disconnect the connector of the interface box and connect the flexible sensor. Slide the flexible sensor connected to the SDT 170 MTT along the contour of the manhole cover and on the different connections fitted on this cover. If necessary, make sure these elements are totally tight by sealing or tightening.

  • Page 73: Conclusion Of The Tightness Test

    Take the reading of the signals again on the sensor above the level of the liquid by pressing the key. If the noise picked up and the value greater than reference value persist, only then - and on a totally insulated tank - there is confirmation of a tightness problem on the tank above the level of the liquid.

  • Page 74: General Flow Chart For The Tightness Test

    11. Procedure for carrying out a tightness test in free mode You must always end the test with these measures of the level of liquids (point 1 above) with the gauge and the water-finding paste. • Any increase in the level of the liquid or the water gives you additional confirmation of the presence of a tightness problem under the level of the liquid.
  • Page 75 Step 1/3: test under the liquid level START OF PROCEDURE No sound signals. Sound signals. Measured Tank tight under Measured value equal or value greater than the base the liquid level. near to the base measurement. measurement. Test and make sure the manhole and the connections are tight Tank tight under...
  • Page 76 11. Procedure for carrying out a tightness test in free mode Step 2/3: test above the liquid level START OF PROCEDURE No sound signals. Tank tight above Sound signals. Measured Measured value equal or the liquid level. value greater than the base near to the base measurement.

  • Page 77: Some Advice

    Step 3/3: conclusion of the test Confirmation of the tightness problem Any additional confirmation of the Low pressure ¾ h. and tightness problem, under and/or above readings of levels the liquid level. Figure 25 : Depressurize the tank for confirmation of tightness defect(s). 11.8 OME ADVICE “Explosion”...
  • Page 78 11. Procedure for carrying out a tightness test in free mode Final test of sensors After all tightness tests have been carried out, it is recommended to test the sensors again following the same methods described for installation (rubbing with the thumb or against a piece of clothing).

  • Page 80: Procedure For Carrying Out The Tightness Test In Data Recording Mode

    12. Procedure for carrying out the tightness test in data recording mode (Second test) This optional procedure involves redoing the test and recording measurements taken and after actions described in the previous chapters has been carried out. This procedure is not time consuming as any tank preparation has already been done.

  • Page 81: Appliances Initial Adjusting

    The current state is as follows: • Sensors are installed; • The interface box is connected to sensors and the SDT 170 MTT; • Taking and memorization of the reference values, steps done before the setting under negative pressure;...

  • Page 82: Entering The Test Informations

    12. Procedure for carrying out a tightness test in data recording mode 12.2 NTERING THE TEST INFORMATIONS Proceed as follows: N° Screen Action Push this key to display the Main menu. Select Record data and … …confirm. The display shows the reference values of each sensor.
  • Page 83 Check that the correct under negative pressure has been maintained. If not, readjust. Enter the relative depression applied to the tank. The maximum negative pressure value is -250 mBar (pump safety valve). This value is reached in 50 mBar steps. The value stated must be negative (-250 mBar).

  • Page 84: Carrying Out The Tightness Test In Data Recording Mode

    The measuring starts automatically with the submerged sensor (Red Sensor). The top left part of the screen indicates alternately <Red Sensor> and <Tank test>. The SDT 170 MTT then does one measurement second. Each measurement is then memorized for the duration of the test laid down in step 5 of §...
  • Page 85 If necessary, the SDT 170 MTT can be switched off, without losing any measured data during this test. Note: measured data cannot be viewed detector. They must downloaded onto a PC, as described on paragraph 12.4, on page 84. Another test on the same tank or on...
  • Page 86 12. Procedure for carrying out a tightness test in data recording mode Pausing or canceling a test that is running Pausing a test Measurements and their recordings will be suspended during this period. No data will be lost and the test can be continued upon request from the operator. Proceed as follows: N°...

  • Page 87: Transferring Data From The Sdt 170 Mtt To The Pc

    To install the Graphs & measurements software on the PC, refer to Chapter 8 on page 35. Effective transfer of data from the SDT 170 MTT to the PC Erasing data: transferring data from the SDT 170 MTT to the PC automatically erases data memorized in the SDT 170 MTT.
  • Page 88 Select the folder in which the data extracted from the SDT 170 MTT will be stored. In the File name field, enter the name of the .txt type file under which the data extracted from the SDT 170 MTT will be stored, and click Open.
  • Page 89 SDT 170 MTT to the PC. During transfer, a status bar indicates the loading progress. During transfer of information from the SDT 170 MTT to the PC, the display indicates Remote control!!. Once transfer to the PC has...

  • Page 90: Consulting Uploaded Data

    Displaying measurements in the application window Proceed as follows: Step Screen displayed Action Launch the 170 MTT application. APP020 In the window displayed, click on Import. Select the file of data transferred to the hard disk and click on Open.
  • Page 91 The right-hand window show two drop-down menus. Left-hand Drop-down menus window Locate the pointer of the mouse above one of these drop-down menus to display a tool-tip. APP50 The above drop-down menu selects test tank reference. As soon the selection is done, the lower drop-down menu displays the tests relating to this reference.
  • Page 92 12. Procedure for carrying out a tightness test in data recording mode Click on the date/time line (right hand window) to display all the measurements and data of this test in the left hand window. APP54 Reading displayed data In the left-hand part and for each test, the measurements are identified by sensor (Red sensor= submerged sensor and Black sensor = emerged sensor).
  • Page 93 Displaying the graph relating to data Click on the Graphs button located at the bottom of the window to display the graph window. The Graphs button Figure 27: Location of the Graphs button in the application window. APP60 Figure 28 displays an example of a graph. The references correspond to the explanatory notes provided.
  • Page 94 12. Procedure for carrying out a tightness test in data recording mode Ref. Explanatory note Vertical axis: the scale of measurements in dBµV, with maximum and minimum values from -10 to +30, for the red (ref. 1a) and the black sensors (ref.
  • Page 95 Ref. Explanatory note Name of the PDF file to be generated. filename Warning: if any name is specified, the generated PDF file will automatically be saved under the name “report.pdf” in the directory root of the application. Open a window allowing the selection of the location and the name of the file to be saved.
  • Page 96 12. Procedure for carrying out a tightness test in data recording mode Operator list window To add an operator, enter the operator’s name (Figure 31, rep. 1) and click Add (rep. 3). The name will be displayed in the list (rep. 2) and then in the drop-down list labeled Operator of the windows Tanktest Results (Figure 29 and Figure 31).
  • Page 97 Step 2: displaying the created PDF file After a few seconds, the pdf file created is automatically displayed by the Acrobat Reader application freely available to download. The inspection report is presented as follows: The header of each page of the report shows, from the left to the right : The logo of the firm;...
  • Page 98 12. Procedure for carrying out a tightness test in data recording mode The third and following pages gather all the test’s numerical measurements, for each sensor, on separated pages and in as much pages as necessary. APP47 Figure 32 : Data shown after generation of the PDF file. Step 3: printing the created PDF file Print these pages by clicking on the Print button in the Acrobat Reader application or through its File/Print menu.
  • Page 100 part Appendixx...

  • Page 102: Specific Procedure For Petrol Tanks

    • You must carry out the check with the rubber ex-proof suction and exhaustion hoses and using the ex-proof vacuum pump (options EXPROOF available from SDT). Note: you must connect the switchbox interface to the earth using the elements supplied.
  • Page 103 Supergreen Super Unleaded Diesel oil / petrol petrol petrol Heating oil Density at 15 ° C 0.765 0.755 0.768 0.842 ° C start of distillation Distillation 10 % vol. Distillation 50 % vol. Distillation 90 % vol. ° C end of distillation Residue Calculation examples (see Pressure/Temperature chart on page 111).

  • Page 104: Safety Instructions

    13. Specific procedure for petrol tanks Example 3 • Diesel oil / Heating oil: temperature at start of distillation = 180°C. • If the temperature in the tank is 50°C, you can achieve an absolute theoretical vacuum without the risk of evaporation (see chart on page 111). 13.2 AFETY INSTRUCTIONS •...
  • Page 105 Figure 33: Detail of marking on sensors. Marking on interface box The marking indicates: • The article code of the box: FUTTSWBOX170 • code of the ISSEP certifying authority: 0492 • The type of protection in accordance with Directive 94/9/CE (ATEX): II (1)G •...

  • Page 106: Useful Information For Calculation

    14. Useful information for calculation 14.1 RESSURE UNITS CONVERSION TABLE Pascal m CE kg/cm² Atmosphere lb per Sq inch (P.S.I) 1 bar 10,2 1,02 0,987 14,5 1 pascal 102 10 10,2.10 9,87 10 0,145 10 1 m CE 98,1 10 9,81 10 96,8 10 1,42...
  • Page 107 Method of calculating resistance to distortion due to the external pressure (= internal vacuum). Calculations based on an empty tank placed on the ground (without any support or earth around the tank). ⎧ ⎫ ⎪ ⎪ ⎪ ⎪ ⎪ ⎪ ⎡...
  • Page 108 14. Useful information for calculation Example 2: . 1 , 3585 mBar ⎛ ⎞ ⎛ ⎞ ⎜ ⎟ ⎜ ⎟ ⎝ ⎠ ⎝ ⎠ Care should be taken when checking old tanks, which could present a considerable reduction in wall thickness (corrosion). For old tanks for which is no data available, it is advisable to check them when they contain a small amount of liquid to keep the pressure as low as possible.
  • Page 109 Table of the maximum permissible vacuum Source: ROARK’S formulas for stress and strain - 6th edition, chap 14, tab 35, item 20. Elastic stability of steel tanks put under vacuum. Wall of the tank without strengthening hoops. Acceptable external pressure (vacuum) Q’ (kg/cm r: radius l: length t: thickness of the wall...
  • Page 110 14. Useful information for calculation Table Q’ following value r/t on l/r 0,72 0,65 0,94 0,84 0,75 0,68 0,61 0,89 0,79 0,71 0,64 0,58 0,95 0,84 0,75 0,67 0,54 0,71 0,63 0,57 0,51 0,97 0,85 0,76 0,67 0,54 0,49 0,92 0,81 0,72 0,64...
  • Page 111 0,82 0,69 0,52 0,46 0,35 0,31 0,28 0,25 0,23 0,68 0,58 0,51 0,44 0,39 0,34 0,31 0,27 0,25 0,22 0,78 0,66 0,57 0,49 0,43 0,38 0,34 0,27 0,24 0,22 0,76 0,65 0,56 0,48 0,42 0,37 0,33 0,29 0,26 0,24 0,21 0,75 0,63 0,55...

  • Page 112: Link Bewteen Boiling Point And Pressure

    14. Useful information for calculation 14.3 INK BEWTEEN BOILING POINT AND PRESSURE Clapeyron’s integrated equation − ∆ ⋅ where: pressure (in atm.) ∆H : molar evaporation heat, specific to each material; expressed in J mol universal gas constant = 8,314 J K absolute temperature in °K Cte : constant value that can be determined from the normal boiling point...
  • Page 113 Diagram InP = f (T So, for a decrease in pressure (P ) there is an increase of 1/T i.e. a lower temperature T. Note For the boiling point to be calculated exactly, ∆H, the evaporation heat of the first fraction of petrol, must be known.
  • Page 114 14. Useful information for calculation Pressure/Temperature chart Distillation temperature at Absolute pressure atmospheric pressure in mm Hg = boiling point 1010 Temperature in the tank 1008 1005 1000 Relative vacuum in mBar °C °F °C °F The safety valve of the pump is pre-set at 250 mBar relative to avoid damaging the tank...

  • Page 116: Technical Specifications

    15. Technical specifications This chapter presents the main characteristics of the SDT 170 MTT and its sensors. The detailed characteristics and specificities of the SDT 170 MTT are those of the SDT 170, which are listed in the SDT 170 User’s manual.

  • Page 117: External Ultrasonic Sensors

    Autonomy of 8 to 10 hours without backlighting. Recharge time: 5 to 6 hours. Nominal Capacity: 1.5 Ah. Life span: 500 to 1,000 charge/discharge cycles. Recharge only with appropriate SDT charger. Auto power Auto power down after preset time. down Operating temp.

  • Page 118: Interface Box (Switchbox)

    15. Technical specifications 15.3 NTERFACE BOX WITCHBOX This box also encloses an intrinsically safe barrier. • Intrinsic safety connection interface between SDT 170 MTT sensors and detector (certificate below). • Diode-type protection. • Electrical characteristics: Uo = 10.5 V Io = 106.3 mA Po = 0.28 W...

  • Page 120: Certificate Of Conformity Of The Sensors And Interface Box

    16. Certificate of conformity of the sensors and interface box The certificates of conformity of the sensors and interface box are presented in the following pages.
  • Page 121 Figure 35: Facsimile of the certificate of conformity of the ultrasonic sensor (page 1/2). CE-C1G...
  • Page 122 16. Certificate of conformity of the sensors Figure 36: Facsimile of the certificate of conformity of the ultrasonic sensor (page 2/2). CE-C2G...
  • Page 123 Figure 37: Facsimile of the certificate of conformity of the interface box (page 1/2). CE-B1G...
  • Page 124 16. Certificate of conformity of the sensors Figure 38: Facsimile of the certificate of conformity of the interface box (page 2/2). CE-B2G...

  • Page 126: Declaration Of Conformity In The European Union

    CE regulations. To be able to operate by state of the art rules, as stipulated in the directive, the SDT 170 detection device has been designed in accordance with the following rules: •...

  • Page 128: Acknowledgments

    In France, in 1998, the Cetim de Senlis, on behalf of the French Ministry of the Environment tested and compared our method with the hydraulic method (checking through pressurizing the tank after it is filled with water). The SDT TankTEST method is recognized there as being more sensitive to detection, easier to set up, faster and more economical.

  • Page 130: Warranty And Limit Of Responsibility

    Warranties dating from the delivery shall take precedence over our general conditions of sale and are the following: Two (2) years for the SDT 170 MTT appliance with the exception of the batteries*. One (1) year for the pump*. * The warranty provides for the replacement free of charge of any part found to be faulty, either by a material default or a design fault.

  • Page 131: Important Recommendations

    These will be higher beyond 50° and lower below -10°. • The built-in sensor of the of the SDT 170 MTT and the sensor of the flexible rod are not tight sensors. Any penetration by foreign bodies such as water,...

  • Page 132: Index

    20. Index °C, 114 Battery pack, 114 ABCDEFG, 60 Bits per second, 43 Acceptance, 28 Black Sensor, 60, 68 Access to the menus, 28 BNC, 55 Acknowledgments, 125 Boiling point, 109 Acrobat Reader, 91 Bottom of pages, 38 Adobe Inc, 95 Browse, 85 Adress, 39, 92 Button...
  • Page 133 16 Free mode, 24 Declaration of conformity in the Frequency, 15 European Union, 123 Friction, 15 Delivered equipment, 17, 21 ftp://ftp.sdt.be, 113 Density of the water, 64 Gauge, 18 Depth adjustment, 18 Get data, 86 Description, 17 Graphs, 35 Device manager, 42 Graphs &...
  • Page 134 Parallelepiped tanks, 54 Parity, 43 Measurement Pausing a test, 83 Length of time, 80 PC, 24, 82, 84, 86 Measurements Connection to SDT 170MTT, 35 Memorization, 82 Measurments Minimal configuration, 35 Clear, 86 PDF, 35, 91 Mechanical bush, 18, 20, 49...
  • Page 135 Port Safety valve, 18, 53 COM, 44 SDT 170 M, 31 Ports (Com and LPT), 43 SDT 170 MTT, 27, 31, 113 Power pack, 17 Advantages, 7, 9 Precision accessories, 30 Description, 17 Precision connection, 17, 20 External view, 29...
  • Page 136 Port parameterizing, 42 Perforation, 64 USB convertor, 41 Petrol, 47, 99 USB link, 41 Polyethylene, 54 Use of the SDT 170 MTT, 31 Reference, 60 Vacuum, 24 Specific procedure, 99 Maximum permissible, 47 Tight, 24 Vacuum pump, 18, 20, 24, 53...
  • Page 137 Your SDT 170 MTT detector...

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