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SDT 170 - Adash.com

1. The active keys inis eve ete dede b eee S 16 12 3 The accessible mentis eee eoe re RE RENI E aded 16 7 3 Choice of route MD version nnne 17 Tal JAecessthe Toute Secor a ETE ER REST DN EPA EE TUUS 17 7 3 2 Definition of a Measurement eene nennen nennen nnn nns 17 Definition 17 7 3 3 Definition of a Memory Number ener 18 73 4 Definition ofa Route cheer ten eiie edt tende 19 1 3 5 The active keys eem ee RC te e ee ees 19 7 4 Visualization of the measurements M and MD versions only ssssssss 20 7 4 1 Access to the memory number ssssssssseseseeeenee eene nnne 20 FAQ Generalantormation ete A Re eet git d A REI E reu 20 7 4 3 More detailed information sess ener 21 7 5 Delete measurement M and MD versions only 21 7 5 1 Access to a memory number ssessssssssseeseeeeeeneen eene emere enne nes 21 W522 General information iie amen te e iat eds 21 7 5 3 Visualize detailed information sse 22 7565 Parameters 42 ee eere p bases NS PETER tag E EE TE RE ELA SAESP REENQAT US 22 56 1 ImedDatesssicestibtos enema tehb ndo nee te 22 Table of contents 7 6 2 DISP CRTST Adjust the displays contrast ratio 23 1 6 3 Backlightingsuxi 4st BOR E e RR T EU 24 7 6 4 Auto power off usce inei en d HERE 24 7 6 5 bangudges cite eere re ERE ERR EH Ren e Ure eee RUN RES ere ET PUe Res 25 7 6 6 Measurement system ISO IMP e
2. Applications the equipment functions in combination with an ultrasonic transmitter 200 mW SDT 8 or SDT 13 In the measurement of different physical magnitudes the equipment functions in combination with a specific sensor temperature air mass flow RPM Light intensity pH etc Please read this users manual carefully and file it in a safe place for future reference All suggestions and warnings must be followed in order to maximize the value of your investment Chapter 4 Recommendations 6 5 The package The package contains the following elements 1 The SDT 170 detector in S M or MD version 2 A rechargeable battery pack NiMH 7 2 V 1 3 Ah 3 A charger for the battery pack specific to the power supply of the country 4 Arubber holster blue Fluor silicone holster wrapped around the SDT 170 5 A contact probe optional for the SDT 170 S version 6 A headphone not shown 7 A Users Manual not shown 8 A carrying case with inlay foam for transport not shown 9 Localization probe not shown 10 Punch not shown AY The SDT 170 contact probe battery and charger Chapter 5 The package 6 Presentation The SDT 170 is a measurement instrument designed for predictive maintenance and quality control It combines technology with simplicity and versatility A diverse selection of sensor options makes it a multifunctional solution answering all the needs of industry The SDT
3. Steam traps valves heat exchangers bearings pumps motors pressure vacuum leaks electrical gear air distribution boxes Manifold 13 2 17 Water waste treatment Bearings valves pressure leaks gearbox Chapter 13 Practical applications 54 13 3 Main applications Foreword Our local representative will give you the necessary information about the use of the appropriate sensor for the applications of the SDT 170 that are interesting you The application list here under is not exhaustive Therefore do not hesitate to contact us for any further information about the use of the equipment or its accessories 13 3 1 The bearings Generalities The friction of the balls themselves and on the bearing track produces an ultrasonic emission When the bearing is new and well lubricated the grease film absorbs the emission generated by the balls When the viscosity of the grease deteriorates the acoustic emission increases This increase corresponds with an elevated reading dBuV from the SDT 170 Trending acoustic energy with the Data Logger software allows the user to accurately predict when lubrication should be applied to a bearing and also when the bearing itself is entering early failure stages Each bearing emits its own sound or ultrasound and its value is expressed in dBUV by the unit SDT170 This emission is directly influenced by the following factors e The type of bearing with needles conical with balls or rol
4. battery and the amount of capacity left in the battery pack as well as the number of battery recharge cycles done INFO SCREEN Serial number of the Number of recharge cycles done battery pack with the battery pack Nominal capacity of the Remaining battery capacity in battery pack Example of the complementary information screen 2 Active key Function First key press show the equipment s serial number version and software revision Second key press battery pack information Third key press return to the main menu Chapter 7 The main menu 28 8 Measurement display Once the unit is powered up the display shows the following information specific to the connected sensor type of sensor unit of measurement as well as common information time date and battery power 8 1 Type of sensor The type of sensor is displayed at the upper left corner of the display The system auto recognises externally connected sensors and switches to the corresponding function Display example of sensor type connected 8 2 Time Date Autonomy This information is cycling on the upper right corner of the screen The format of the displayed time and date depends on the type of language used The remaining capacity in the battery is expressed in at the upper right corner of the display right of the battery icon The amount of blackening corresponds to the remaining capacity of the battery Exam
5. normal valve the valve is blocked in closed position defective valve The thickness of some large manual valves does not allow the detection of a sufficient signal by means of the contact probe Using a magnetic sensor can solve this problem Confusion can arise between the ultrasounds of a leak and those due to turbulence under high pressure before a closed valve or a condenser A leak always produces a signal that is higher to the one produced by turbulence A leak will produce a signal in one specific spot while turbulence will come from a more generalized area Experience and familiarity with your own plant is a great help in differentiating between a leak and turbulence 13 3 13 Vibrations There is no defined method The best way is to listen to the generated acoustic signal and to localize the signal Chapter 13 Practical applications 59
6. six months The warranty covers all material supplied and implies the free replacement of all parts that contain a manufacturing fault The warranty does not include packing and transportation to and from the factory These remain the responsibility of the customer The warranty period begins on the day that the unit is delivered to the end user and is valid only if the warranty card is returned to SDT International directly or via a local representative In case of failure the manufacturing shipment date will be used as a reference The warranty is void if misused or accident damages the product if the product is altered in any way if an unauthorized party attempts repair or the unit is opened without written authorization of SDT International In the event of a defect contact your local SDT representative or SDT International 3 2 Responsibility limits Neither the company SDT International nor any related company will in any circumstances be liable for any damages including without limitation damages for loss of business business interruption loss of information defect of the SDT 170 unit or its accessories bodily harm loss of time financial or material loss or any other indirect or consequential loss arising out of the use or inability to use this product even when it has been warned of possible damages Chapter 3 Warranty and responsibility limits 4 4 Recommendations 4 1 Usage recommendations This Users Man
7. 170 not only detects pressure and vacuum leaks it is also capable of quantifying the leak by means of a mass air flow sensor Mechanical wear and lubrication failure contact and non contact temperature measurement rotation speed RPM noise level dBA water tightness testing light intensity LUX and pH acidity are examples of the systems multi functionality 6 1 Front and back side Presents itself as follows Display Keyboard Strap carrying rings Holster Battery charger connector Communication connector Headphones connector The visible elements on the front and bottom of the SDT 170 Chapter 6 Presentation 8 6 1 1 The display The LCD display contains different icons that indicate the functional mode of the equipment the context and or the type of sensor connected The locations are as follows SDT 170 M AND SDT 170 MD VERSION BRWNe Primary icon locations on the display of the SDT 170 M and SDT 170 MD versions The display is composed of the following icons Location Associated function 1 Sensor 2 amp 3 Amplification adjustment indicators 4 Bar graph 5 Peak and hold maximum signal indicator 6 Measurement value 7 Battery level indicator 7 Time Hour y Date 8 Unit of measurement 9 Complementary information Remarks Type of sensor used connected Only for ultrasound dBuV and sound level dBA measurements Visual indications of the measured value This indic
8. 55 Use of the contact probe Rules to respect In most circumstances the contact probe is the best sensor to monitor a bearing The contact probe is a standard accessory in the SDT 170M and MD versions and an option in the SDT 170S version To ensure the repeatability of the measurements taken with the contact probe it is imperative to follow the next rules e Attach the needle correctly e Always take a measurement by applying the top of the needle on the same spot possible marking with the awl to dimple the housing e Maintain the contact on the vertical plane perpendicular of the measurement point Any oblique position should be avoided e Apply the same holding pressure on the probe e Hold the M button down for 3 to 4 seconds until stabilization of the measurement is achieved e Make sure that the appropriate functioning mode has been selected see next pages Operating method To determine the status of the bearing two operating methods are possible 1 Trending the evolution periodical measurements are recorded for further analysis with PC software or by consultation of the internal memory of the unit version M amp MD Any signal increase higher than 10 dBuV needs to be watched 2 By comparison any significant difference several dBUV between the measurements take on the bearings evolving under similar operating conditions is to be watched Operating mode When the probe is connected to the SDT 170 the sub
9. E Gat 44 12 6 5 Flexible sensor Length 550 mm Closed sensor 13 mm 44 12 6 6 Flexible sensor Length 550 mm or 820 mm Closed sensor 13 mm 44 12 6 7 Magnetic sensor BNC and SMB types 45 12 6 8 Threaded sensor ede eta ped Sd beet loi 45 12 45 Cabless sire ERO 45 Table of contents 12 7 1 BNC to LEMO 7 pin cable Length 2 5 m 8 2 ft sss 45 12 7 SMB to LEMO 7 pin cable Length 2 5 m 8 2 ft 46 12 8 Ultrasonic transmitters optional nennen 47 12 8 1 SDT 200mW transmitter essere ener nennen 47 12 8 2 SDT 8 fixed power multi transmitter eeesssseseseeeeereneeeenn ns 48 12 83 SDT 13 adjustable multi transmitter essere 49 12 9 External sensors optional eere nne nennen nens 50 12 9 1 Sound Level Meter o b t i rh Pte 50 12 9 2 Rotation speed measurement ssssssssssssssseeeeene ener 50 12 9 3 Ait mass flow mieasuremelhlt 4er RRENE ANE eds 50 12 9 4 Temperature measurement interface sss 51 129 57 Lightantensity meter casos te e EE ob De Eod 51 12 96 vrplimeasurementiuseosnen etcetera tn Ne mad Reb aeons dte 51 13 X Practical applications ssim 52 13 1 Ultrasonic Wayes oen eere ineo e eC eee omite 52 I3 General eee rtr REP REP EROR PFERDE Seed 52 13 1 2 Operating principle of the SDT 170 sssssssssseeeeeeeenenenes 52 13 1 3 Physical present
10. arrows are shown on the display The table shown below indicates the correlation between the amplification level in dB and the absolute amplification value amas 10 7 o 9 o 0 000 Chapter 8 The measurement screen 30 8 4 The bargraph Situated on the lower side of the display it graphically illustrates the amplitude of the measured signal While measuring an indicator line shows the peak value measured Every two seconds the peak and hold indicator is reset i Instant value Peak value Maximum allowed value The bargraph and its peak and hold indicator Chapter 7 The main menu 31 9 Usage This chapter discusses using the unit with the internal sensor or any external sensor Measurements can be taken with or without using pre defined routes see paragraph 7 3 for more information 9 1 Available Configurations 9 1 1 SDT 170 S version This version is limited to the usage of either internal or external ultrasonic sensors The S version has no ability to memorize values 9 1 2 SDT 170 M and MD versions Usage without user programmed route Data can be stored into a so called bulk route route 0 This route cannot be pre defined by the user See paragraph 7 3 3 and 7 3 4 for more information on route defining The M and MD versions have the full range of multi functional sensors available 9 1 3 SDT 170 MD version Usage with user defined routes Data can be measured and then
11. compressors is different from the sonic thresholds of the standard ball bearings Therefore a measurement of 50 dB on the bearings of a screw compressor does not mean a problem The high amplification level is due to the airflow in the screw Once again using the trending methods described earlier an increase of 10 to 15 dBuV over normal baseline shows that a failure is approaching Chapter 13 Practical applications 57 13 3 6 Corona effect Micro electrical discharges caused by corona effect electrical arcs in cables line bushings transformers engines engine brushes etc generate ultrasonic phenomena that sound like frying eggs These problems can cause serious problems such as fires and explosions Using the SDT 170 in the airborne mode corona effect can be discovered at an early stage and from a safe distance from the problem 13 3 7 Gears Meshing of gears produces a friction that creates an acoustic emission It is possible using the SDT 170 to Estimate the wear on gears by control in time Diagnose the defective gearwheel either by an irregular ultrasonic noise or by a dBUV value that has increased over time Operate as follows e Listen to the signal by sweeping from one side of the box to the other using the airborne sensor A good gear mesh produces constant and regular ultrasounds A defective gear can be recognized by a high pitched irregular production of ultrasounds Take measurements on each gear Co
12. key for auto decrement Enter validate the adjusted backlighting timer s value and return to the options menu e gt 7 6 4 Auto power off This function adjusts the time before the unit switches off power automatically to save the battery pack s power The auto power off restarts each time a key is pressed When no key is pressed for the pre programmed time the unit will switch off power automatically The display will show a screen similar to the one below DUH TIHE An example of the screen that permits the adjustment of the auto power off timer The auto power off timer is adjustable between 1 and 100 minutes Chapter 7 The main menu 24 Active keys Function Return to the parameter menu without taking in to account eventual changes Increases the auto power off timer Hold key for auto increment Decreases the auto power off timer Hold key for auto decrement Enter validate the adjusted auto power off timer s value and return to the options menu 7 6 5 Language This function permits the user to change the language of the messages on the display The display will show a screen similar to the one below Select Language HEDERLANDS ENGLISH LH ENGLISH U3 Screen example when changing the language Active keys Key Function Return to the parameter menu without taking in to account eventual changes Move up the inverted language selector Move down the inverted lang
13. limited to 1000 points It is possible to measure and store data in the M version however there is no possibility to define routes or load identification information for specific plant machinery The M version cannot transfer its stored data to a PC 2 1 2 SDT 170 MD Multifunction Datalogger Version This equipment contains all the functions described in the technical specifications found in chapter 12 A dynamic datalogger is capable of memorizing approximately 15 000 measurement points Using the software program provided the user can create individual maintenance routes that clearly define the machines to be monitored Each route can contain as many as 1000 points each point clearly identified by a 10 character alphanumeric code The SDT 170MD can transfer all measured data back to the software by means of either an RS 232 C or IRDA connection The SDT Data Management Software will organize measured data in several formats all definable by the user Chapter 2 The Users Manual 2 2 2 Purpose The Users Manual is designed as an educational guide and reference tool for anyone who wishes to use the SDT 170 equipment for its intended purposes Inside you will find information pertaining to The description and functionality of the equipment Its many uses How to care for and maintain the equipment Recommendations relative to the declaration of compliance to the European Community s regulations the warranty and the differe
14. occurring mechanical phenomena friction of rotating equipment pressure or vacuum pneumatic or hydraulic problems or arcing and corona electrical problems Artificially by means of a transmitter like the SDT 8 or the SDT 13 for tightness testing 13 1 2 Operating principle of the SDT 170 The SDT 170 detects ultrasonic signals converts them to audible frequencies and amplifies them The challenge is to transpose the received signal using the heterodyne technology into an interpretable audible signal This solution extends the ability of the human ear beyond the simple audible range and into the ultrasonic one F kHz A principle functions of the SDT 170 is converting high frequency signals into audible frequencies Chapter 13 Practical applications 52 13 1 3 Physical presentation of the ultrasonic sensors We have built several types of sensors to accommodate the diverse range of applications in the industrial environment The primary ultrasound sensor 1s wired directly inside the detector It is designed to detect sources of airborne ultrasound like compressed air leaks vacuum leaks corona discharge etc The extruded aluminum case serves to protect the sensor from the hazards inherent in most plants However the sensor is not waterproof and every precaution must be taken to prevent water and dust out of the sensor With the same concept as the built in airborne sensor other ultrasonic sensors are available
15. stored onto a predefined route A route must first be mapped out with the SDT 170 Data Management software and then uploaded to the SDT 170MD Refer to the software manual for more information on building a route The measurement will be stored onto the route selected by the user see paragraph 7 3 4 All information can be transferred onto a personal computer 9 2 Switching on the unit Press the key to switch on the unit 9 2 1 Self diagnostics Once the unit is switched on the unit performs an internal diagnostics This takes about two seconds to complete If the self test fails the unit will show a specific message to the user see chapter 11 for more information Chapter 9 Usage 32 9 2 2 Route selection M and MD versions No user defined route The measurements must be stored in the so called bulk route route 0 When another route is to be used please refer to the next paragraph Pre programmed route MD version only From the measurement screen press the CS key to select the main menu followed by the key to validate the route menu selection Select the route by pressing the and keys Enter validate by pressing the e key Return to the measurement screen by pressing the key 9 2 3 Amplification This function is only available when measuring one of the ultrasonic sensors e When the bar graph is active it shows the current ultrasonic signal strength When necessary modify the amplification b
16. that are waterproof Contact sensors like the contact probe the magnetic sensor the threaded sensor and others are designed to augment the functionality of the overall detector 13 2 Main application fields An entire book could be devoted to the list of applications for ultrasonic detection in industry for preventative predictive maintenance and quality control The following is an outline of some of the most commonly used applications 13 2 1 Automotive and transportation Wind noise water leaks windshield tightness bearings including bearings on robots Leaks on air brake systems 13 2 2 Aviation and space Cabin pressure leaks cockpit windows oxygen system leaks fuel cells actuators tire retention hydraulic valves hot air duct leaks slides and rafts nitrogen system and pneumatic system leaks bearings 13 2 3 Trucks and buses Wind noise water leaks air brakes injector sequence wheel bearings slow speed 13 2 4 Rubber and tire Leak detection steam traps valves bearing monitoring electrical gear tracking pumps motors 13 2 5 Railroads Air brakes bearings water leaks electrical gear and diesel injector s sequence 13 2 6 Chemical and petrochemical Pressure vacuum leaks bearing monitoring steam traps valves compressors heat exchangers gear gear boxes pumps including cavitation motors electrical gear arcing 13 2 7 Construction Contracting vehicles amp cranes Pump cavita
17. to 150 C 2 between 25 to 150 C and 50 to 450 C Measurement units Celsius C Fahrenheit F Kelvin K Rankine R 12 9 5 Light intensity meter Function Light intensity level metre Measurement ranges 0 200 lux 0 to 499 ftcd 200 to 2000 lux 5000 to 19 990 ftcd 2000 50 000 lux 20 000 to 30 000 ftcd Resolution lux 1 ftcd 10 lux 10 ftcd 100 lux 100 ftcd Precision 0 5 lux 0 200 lux range gt 5 lux 200 20 000 range Measurement unit Lux lumens m footcandels candels ft 12 9 6 pH measurement Function PH meter Measurement range 0 14 pH Precision 0 05 pH over the whole scale Resolution 0 01 pH Chapter 12 Technical specifications S1 13 Practical applications 13 1 Ultrasonic waves 13 1 1 General Ultrasonic waves are sound waves beyond the range of human hearing 20 kHz To be detected we need to use equipment like the SDT 170 with the capability to receive ultrasonic frequencies and convert them to corresponding audible sounds Ultrasonic frequencies travel through gases air and solids bearing housings in a very directional nature unlike audible sounds which disperse in all directions Ultrasounds are low energy sound waves therefore they are quickly absorbed by the medium through which they travel Ultrasonic waves are generated by Naturally
18. 1 General recommendations esce eA RIED eene e evtl dede 35 I0 1 The ch rger iu sese eite eec c E e n e e ENG 35 10 1 2 The battery pack 2 E o RE EE eae ee 35 10 2 The b attery Chatger c eoe HR ee eS TE RO weet 36 10 2 1 General ss de ERR sia fel RU cee leh 36 I0 2 2 The status indicator light eese ete eie etie 37 10 3 Recharging the battery pack in the unit ssssssseeeneenenennenen 37 10 3 T General i90 sou Lapsus essen Ue Ei Ba oce ces 37 10 3 2 Operation ceste REM bas Ree e ee ee RN ERN UE Ae edu 37 10 3 3 General ite ERECTO GP RERO Dee 38 10 3 4 Operation zoe ER Vae ion 38 11 Functional Anomalies esses 40 Tiel Battery dischatged oe RRERRR I ee ee es 40 11 2 Otherundications sese e E ER REOR ERREUR 40 12 Technical SDOOIfICallOHS csi irati aii cn a ei pe e in c RR E 41 12 Measurement Unit o eripe rere PO RU e Eie POE HR EE Ped 41 12 2 Battery pack ise I eee ee 41 12 3 Battery chargef rnrn jenini iien E EERE RA E RE EER RE 42 12 4 Internal ultrasonic sensor enne ennt nennen nennen 42 12 5 Gontact probe eee RH eer NU TU te Ree iS 42 12 6 External ultrasound sensors optional seen 43 12 6 1 Open sensor I4 mr tette te eoe Rete iere pee Ud 43 12 6 2 pen sensor 20 MAM cece teer toe ere rene en Co NER Ee RA e E CARA 43 12 6 3 losed sensor I3 mm oae ten e PE ER ERES 43 12 6 4 losed sensor 23 mim 4 Re ere
19. 1 Ultrasonic level front bearing of pump RPM speed of pumps bearing Temperature of pumps bearing Ambient noise level of workshop Oven temperature without contact Lighting level Tightness of valve Temperature RPM speed Mechanical wear of pulley Noise level of ventilator RMP speed of ventilators motor Tightens incoming gas valve 1 1 1 RPM speed of centrifugal pump 7 3 5 The active keys Function Return to main menu without validating the changes escape Increases the route number Decreases the route number Enter validate the selected route number and return to the main menu K Y X d 5 Chapter 7 The main menu 19 7 4 Visualization of the measurements M and MD versions only Note it is advised to have knowledge of the information shown in chapter 8 This function permits the user to display for a given memory number the stored memory contents four last values only 7 4 1 Access to the memory number Enter VISU MESURE by pushing the e key When a new screen is shown select the memory number by pressing the Q or Y key Keep pressing the key to auto increment decrement the memory number Enter validate the selected memory number by pressing the key Return to the other menu escape by pressing the key 7 4 2 General information When no data is stored on the selected memory location the display responds with No measurements available Press the key t
20. 10 Recharging the battery pack 38 Place the charged battery pack in the SDT 170 unit like indicated Slot upside Rounded part downwards Replace the battery pack by taking care of the position of contact pads the rounded edge and the slot like indicated Chapter 10 Recharging the battery pack 39 11 Functional Anomalies 11 1 Battery discharged The following message appears flashing on the display Battery charge too low The warning message when the battery pack s charge is to low Change the battery pack and recharge the empty pack as indicated in chapter 10 11 2 Other indications These appear when a serious internal error occurs In most cases this is due by an electronic failure of the unit The user must return the equipment to the distributor for repair There are no internal parts on the SDT 170 which are serviceable by the end user Only qualified technicians should attempt repairs Chapitre 11 Functional Anomalies 40 12 Technical specifications 12 1 Measurement unit Function Multifunction detector Display Graphic LCD with backlighting Keyboard 8 function key s Ultrasonic sensor Integral See Chapter 12 2 External See appendix External sensors Sound level noise level RPM air mass flow temperature light intensity pH acidity Data Logger Capacity of approx 15 000 points includes time date unit and type of
21. 7 2 2 Permits the user to delete one of the four measurements previously stored on the selected memory number Only one measurement can be deleted at a time simultaneous deletion of multiple measurement is not allowed 7 5 1 Access to a memory number Select EFFAC MESURE and press the to enter the function When the new screen appears select the memory number by pressing the 9 and Ww keys Hold the key to rapidly increment decrement the memory number Enter validate the selected memory number by pressing the 7 5 2 General information When the selected memory number is empty the message No measurements available is shown When the selected memory number contains at least one measurement the following similar screen is shown Time date and battery Memory number gt condition alternating Measurement number 1 UE d Ei Jd 7 dell Measurement unit Measured value Display example relative to ERASE MEASUREMENT Chapter 7 The main menu 21 Active keys Function Return to the previous menu main menu by successive key presses Move the inverted selection line upwards The first number is the last measurement made Move the inverted selection line downwards The last number is the first measurement made Enter validate the selected memory number This allows you to see more details about the measurement to be deleted see next paragraph 7 5 3 Vi
22. USER MANUAL SDT 170 Copyright 1998 by SDT International n v s a First 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 Due to continued research and development specifications of this product can change without prior notice SDT International n v s a Bd de l Humanit 415 B 1190 Brussels BELGIUM Tel 4432 2 332 32 25 Fax 32 2 376 27 07 e mail info sdt be web page http www sdt be Contents 4 Confomnity SIalemoehl s oie Sade ay sia iii Wael ato sv case va ea nada oad 1 2 The Users Manuali a bv et o doa Ee aba ca ti EE ev D dad eig 2 2 Versions uen ote iem eei a e WAT e eee 2 2 1 1 SDT 170 M Multifunction Version nennen nennen 2 2 1 2 SDT 170 MD Multifunction Datalogger Version ssssseeeee 2 2 2 lig 3 2 4 Reading isse sedemees enden e ee i de eed 3 3 Warranty and responsibility limits sss 4 SL AWOFTABly Ses psu tree Torre E EAEE besser Ld oie er uL eed ae 4 32 Responsibility limits ertet RETE eee aoe eee on een 4 Z Recommieridations otov eee ten eoa Loo veau Dea ds drea aV Mov usw vu rea 5 4 Usage recommendations ssssssssseseeseeeeeeerener enne ee nn
23. aded sensor 39 XO OA ed LSS eq 5 CX SoS sac SxS o es eo oS SS o e eS e e LS S S RSLS OX M OS The sensor is supplied with BNC type connector and a 2 5m 8 2ft cable equipped with BNC and 7 pin LEMO connector BNC X cO G N Q 32 E 72 6 12 7 Cables M8 012 12 7 1 BNC to LEMO 7 pin cable Length 2 5 m 8 2 ft lt 914 5 e E 53 Chapter 12 Technical specifications 45 12 7 2 SMB to LEMO 7 pin cable Length 2 5 m 8 2 ft 26 3 Chapter 12 Technical specifications 46 12 8 Ultrasonic transmitters optional 12 8 1 SDT 200mW transmitter This unit is a small portable ultrasonic transmitter equipped with one transducer The transmitter is available in directional and bi sonic modes It is equipped with an internal rechargeable NiCd battery The user can select between two power positions Internal Battery 9 6V 100mAh NiCd Transmitter frequency 39 5 kHz 100 Hz Transmitter power 200 mW Transmitter angle 150 Autonomy 4 hours Dimensions 108 x 35 x 40 mm 4 25 x 1 37 x 1 57 inches L x W x H Weight 230 gr 8 11 oz Chapter 12 Technical specifica
24. al test procedure the main menu allows you to choose between different complimentary menus and their associated functions 7 1 Access the main menu 7 1 1 Switch on the equipment Press the key to switch on the equipment 7 1 2 Automatic tests Once the equipment has been switched on the build in automated self test is started and takes about two seconds to finish In case of a problem a specific message is shown to warn the user of a possible malfunction Please refer to Chapter 11 Functional Anomalies for more information If no problem or fault is detected during the build in self test the unit will place itself into the measurement mode 7 1 3 The measurement screen M and MD version Once the measurement screen is shown press the to access the main menu Continue on the next Chapter Measurement screen SDT 170 S version Chapter 7 The main menu 15 7 2 The main menu 7 2 1 Presentation Contains the following choices Hain Menu SELECT ROUTE VIEH DAT ERASE DATA Main menu The menu ROUTE CHOISE is only in the SDT 170 MD version accessible The menus VISUALISE MEAS and ERASE MEAURE are not available in the SDT 170S version 7 2 2 The active keys The activated keys in the main menu and sub menu are contexts are Function Return to the measurement function Select one of the menu lines by moving the inverted line upwards only when the A sign is displayed in the upper righ
25. an not be localized with precision e Vacuum ultrasounds if the volume permits place it under vacuum after having previously introduced an ultrasonic sensor in it The air penetration from a leak can be detected more easily as the volume constitutes a resonance chamber Depression liquid sonic signal by filling the volume with liquid prior to putting it under vacuum any leak will provoke air bubbles that can be detected by means of a sensor placed in the liquid This method combined with the previous one can be used when the liquid is not filling the entire volume Example Underground Storage Tanks Chapter 13 Practical applications 58 13 3 9 Leaks detection and localization Any air leak with a size of about 1 mn pipe openings badly tightened join porous flexible on a compressed air network at 7 bar pressure represents a loss of about 5 m h This represents about 43 800 m of lost air per year for one single leak Detecting compressed air leaks is an important source of financial savings Sweep the detector back and forth using the airborne sensor and listening for leaks in the headphones A characteristic hissing sound associated with a leak will be obvious if a leak exists Due to the directional nature of ultrasound once the hissing is detected it is easy to zero in on the exact source of the leak Often it requires a simple action to make the repair The same strategy can be employed for vacuum leaks however in
26. ation of the ultrasonic sensors 53 13 2 Main application fields ise eet eee e Ra 53 13 2 1 Automotive and transportation sess eee eene 53 1322 Aviation and space etse ht pai rir e End ee Ou Ps 53 13 2 3 Tricks and buses i eee ceil epp din icis de Re chain ERR oca 53 13 24 Rubber and tire icone ee TRE CP GERD ee Ee mec ae 53 1322 5 Rairoads ig oon dot etae dom on tot teks RE eec dd 53 13 2 6 Chemical and petrochemical ssssesseseeeeeeeree enne 53 13 2 7 Construction Contracting vehicles amp cranes sssssssseeee 53 13 2 8 General manufacturing eee es e e ee Rea 53 13 2 9 Gasiplaniss 55i ee SERE RN ea 53 13 2 10 Facilities and buildings esee enne 54 IE EM Eis e XE 54 13 2 12 Materials and composites ssssssssssesesee eene 54 13 22 13 Pulp and paper reo eee e ouest ior UP ER ead 54 13 2 14 Power plants generation distribution esssseeeeeeenenens 54 13 2 15 Textile 45 052 itte e ini te o Rei id ahi cde a eee eed 54 13 2 16 Food processing esie eee eei eed e 54 13 2 17 Water waste treatment ooa d tea n e RO ERR Quee 54 I33 Main applications cocer pee Meet rre Re HA ere eene us 55 13 3 1 The bearings i SURG REIR UR PE ARR URS IERI ERR ERA Ue eds 55 13 32 Coupling alignment ee ene eate e nee id Eds 56 13 3 3 Barelsand bottles 4 note ERI e EDO ELO des 57 13 34 Hydraulic circ its i
27. ator shows the maximum signal detected and resets itself after approximately 2 seconds The lines are replaced with a measured value when the M key has been pressed This key is only used when measuring dBuV and dBA 100 corresponds to a fully charged battery Display alternates between time date and load Current time Display alternates between time date and load Current date Display alternates between time date and load Depends on the connected sensor See further A amplification value in dB ultrasound Chapter 6 Presentation 9 SDT 170 S VERSIONS The orientation of the main icons on ine SDT 170 S version The display is composed of the following icons Location Associated Function 1 Sensor 2 Bar graph 3 Indication of the maximum measured signal peak value 4 Complimentary information 5 Date Remarks Type of sensor connected Visual indication of the measured vales The scale 10 70 gives a visual idea about the amplitude strength of the measured signal This indicator resets itself after approximately two seconds A amplification level used in dB ultrasound Display alternates between time date and battery load Chapter 6 Presentation 10 6 1 2 The keyboard The keys correspond to the following functions Key Associated Function Remarks Access to the menus first press or return to the See 7 2 measurement second press Upward movement of the selector Use to t
28. by means of the status light The definitions of the status light are shown in the following table Status of the light Meaning No light Battery charged Green Fix Power supply to the SDT 170 unit the battery pack is in a slow charging mode 12 to 14 hours Green Flashing Fast charging 5 to 6 hours only on the battery pack Red Fix Problem with charging 10 3 Recharging the battery pack in the unit 10 3 1 General The battery pack can be charged while still in the unit Charging will be done transparently to the operation of the unit Advantage Possibility to charge the battery pack while the unit is in use Disadvantage Charging time is longer when the equipment is switched on due to power consumption restrictions of the charger 10 3 2 Operation Proceed as follows Connect the charger connector to the unit Plug the charger into the mains power socket The charging will be done in about 5 to 6 hours when the unit is switched off or 12 to 14 hours when the equipment is used Refer to paragraph 10 2 2 for the charger status light indications Charger Status indicator Charger connector The connecton of the charger to the unit Note When a charger is connected to the unit the charger automatically switches to slow charge when the unit is switched on To switch back into fast charge mode turn off the unit It is not advised to change charging speeds of the battery by switching on and off the
29. ctor as soon as possible When the battery pack reaches its end of life it must be disposed of in the proper way These batteries contain no heavy metals and can be recycled Please send them to the nearest battery recycling center Chapter 10 Recharging the battery pack 35 Battery contact pads Do not short circuit Battery charger connector The elements of the battery pack 10 2 The battery charger 10 2 1 General The charger mono block type is represented as follows Battery charger status indicator View of the battery charger and its status indicator The mains supply voltage depends on the model used 110 or 220 VAC The output voltage of the battery charger can be either 7 2V or 9V depending on it s operating mode charger connected directly to the battery pack or charger connected to the SDT 170 the unit being switched on or off The maximum output current is about 500 mA While charging the battery pack the following criteria are permanently monitored End of battery charging cycle detection by means of the A U method Endofthe battery charging cycle detection by means of excessive change in the battery pack s temperature Detection of temperature overload Endofcharging cycle by means of timeout timer Chapter 10 Recharging the battery pack 36 10 2 2 The status indicator light When the battery charger is connected to the power supply it informs the user of its charging status
30. d as external sensors See Chapter 6 2 3 for more information 6 2 2 The infrared window except S and M versions This window permits the unit to communicate by means of the IRDA mode wireless infrared communication 115 kBaud with equipment that permits this kind of communication IRDA V1 0 compliant 6 2 3 The connector for external sensors Depending on the version S M or MD you have purchased additional external sensors are available which can measure several phenomena ultrasonic RPM air mass flow rate temperature light intensity pH etc The internal airborne ultrasound sensor is automatically disconnected when an external sensor is connected Chapter 6 Presentation 13 6 3 The back view Permits access the battery pack Battery pack Battery pack locking catch Visible elements of the backside of the equipment 6 3 1 The battery pack The battery pack can be removed after unlocking the locking catch This is done by shifting the locking catch towards the front of the equipment in the direction of the internal airborne ultrasound sensor 6 3 2 The battery The batter is a NiMH type Nickel Metal Hydrate operating voltage 7 2 V It is specific to the equipment Chapter 12 1 presents the general characteristics of the battery pack Chapter 10 explains how to recharge the battery pack Chapter 6 Presentation 14 7 The main menu After the unit is switched on and has concluded the intern
31. d to an other user Brussels March 1998 Chapter 1 Declaration of Conformity 1 2 The Users Manual 2 1 Versions The SDT170 is available in three versions Depending on the needs of the customer SDT configures the software to meet individual requirements and or budget The hardware configuration remains the same for all three versions Each version can be upgraded to the version above by purchasing an upgrade license from your authorized SDT dealer This user manual describes the scope and functionality of the three versions and indicates which functions are available with each version To see which version is installed with your SDT 170 refer to chapter 7 1 2 for more details on how to show the implemented version on the LCD display SDT 170 S Standard Version The S version is designed to detect compressed air and vacuum leaks and listen to mechanical phenomena in the ultrasonic domain The signal is displayed by means of an analog bar graph on the LCD display This version is limited to the usage of the internal and external ultrasonic sensors It contains no memory or storage possibilities it has no multi functional measurement capabilities found in the M and MD version see chapter 12 specifications and it cannot communicate to a PC 2 1 1 SDT 170 M Multifunction Version The M version contains all the functions described in the technical specifications see Chapter 12 An internal memory is installed but its capacity is
32. ed Continue on paragraph 7 6 8 Chapter 7 The main menu 16 7 3 Choice of route MD version This function permits the selection of one route from a maximum of 15 user definable routes from 1 to 15 Note this function is not available on the SDT 170 M version This version SDT 170 M has only 1 000 points memory capacity numbered from 0 to 999 route 0 or bulk route The specific information of the routes is defined by means of the SDT 170 Data Management software which is included with the SDT 170MD version and can be installed on a personal computer running Windows The hierarchy of the MD Data Collector is as follows Measurements the last four Route 1 15 measurements taken with any type of sensor connected to the equipment number of measurement depending on the amount of memory Memory n 0 Measurements the last four measurements taken with any type of sensor connected to the equipment number of measurement depending on the amount of memory Memory n 999 max The hierarchy of the different storage levels A summary is defined below 7 3 1 Access the routes Select CHOIX ROUTE by pressing Q or QD key Enter validate the selection by pressing the key 7 3 2 Definition of a Measurement Definition A measurement is a numerical value example 250 C stored in the unit For each memory number the last four measurements are stored numerical values and are retrie
33. formation 1 1 1 1 1 Memory location No 2 Measure T n Measure dBuV n 1 Measure RPM n 2 Measure dBA n 3 In this example on memory location number 2 four measurement type have been done T dBwy RPM and dBA Chapter 7 The main menu 18 7 3 4 Definition of a Route Definition A route consists of several different physical locations that are to be monitored with the various sensors available to the SDT 170M equipment The order and sequence of these locations are defined by the user and mapped out within his SDT Data Software package Once a route is defined on the PC it can be uploaded to the SDT 170 device by means of the IRDA link or the RS232 interface Up to fifteen independent routes can be stored in the unit at once The tasks of the user is thus perfectly defined and simplified No measurement is forgotten or stored in the wrong memory location Usage The routes are defined and transferred in the equipment by the means of a specific SDT 170 Data Management software installed on a personal computer The conventions are Route 0 Is a non predefined route and gives the possibility to the user to store an optional or non planned measurement or control point as needed This route is also called a bulk route Routes 1 to 15 MD versions only Predefined and uploaded routes from a personal computer Example of the utilization of routes and memory numbers Route NR Memory NR Measurement to be taken
34. harger Contains no user serviceable parts and must not be opened by the user for any reason Must not be subjected to water or used in humid environments Chapter 4 Recommendations 5 4 2 Operator safety The operator must take all necessary precautions when using the equipment in high risk area s sound levels high light and radiation levels extreme temperature conditions chemical corrosive elements etc The user must be particularly vigilant when entering enclosed zones holds silos where a risk of asphyxiation or lack of oxygen is possible 4 3 End of life destruction of the equipment When the equipment becomes obsolete the internal battery pack must be removed from the equipment and must be disposed of in a such a way that conforms to the environmental laws of the country The outer casing and other internal components may be destroyed by the appropriate specialized organizations Local laws take precedence over this text and must be scrupulously respected 4 4 Usage limits This multifunctional equipment is designed on one hand as a detector of ultrasonic sound waves and on the other hand as a measuring device when connected to specific sensors In the domain of In the detection of transmitted ultrasonic waves the equipment will function with its internal ultrasonic sensor or with an external ultrasonic sensor In the context of being used in a transmitter receiver application as described in the chapter
35. ied with a 2 5 m 8 2 ft cable equipped with a 7 pin LEMO connector 14 92 5 53 12 6 3 Closed sensor 13 mm The sensor is supplied with a 2 5 m 8 2 ft cable equipped with a 7 pin LEMO connector 26 SS 2 5 8 013 7 61 Chapter 12 Technical specifications 43 12 6 4 Closed sensor 23 mm The sensor is supplied with a 2 5 m 8 2 ft cable equipped with a 7 pin LEMO connector 15 12 6 5 Flexible sensor Length 550 mm Open sensor 13 mm The sensor is supplied with BNC type connector and a coiled cable equipped with BNC and 7 pin LEMO connector The coiled cable can be stretched to approx 2 m 6 6 ft 12 6 6 Flexible sensor Length 550 mm or 820 mm Open sensor 13 mm The sensor is supplied with BNC type connector and a coiled cable equipped with BNC and 7 pin LEMO connector The coiled cable can be stretched to approx 2 m 6 6 ft flexible rigid 914 820 Chapter 12 Technical specifications 44 12 6 7 Magnetic sensor BNC and SMB types The sensor is supplied with BNC type connector and a 2 5m 8 2ft cable equipped with BNC and 7 pin LEMO connector OO OD KKK ces SSS SSS Ode KS XLX RLS RS LS SRS oes SO SS SS SS lt gt lt gt 12 6 8 Thre
36. lected route 9 2 6 Switch off the equipment The unit can be switched off by briefly pressing the key The unit will switch off automatically after a pre programmed period of This auto power down timer can be adjusted in the Auto power off menu See paragraph 7 6 1 for more information Chapter 9 Usage 34 10 Recharging the battery pack 10 1 General recommendations 10 1 1 The charger Always keep and use the battery charger in a dry indoor place Never short circuit the pins of the charger connector Never use a battery charger to charge the battery pack other than the one supplied with your kit The charging of the battery pack must always be done in a cool place ie Room temperature out of the sun or away from any heating system The battery charger and its battery pack 10 1 2 The battery pack Never short circuit the contact pads on the battery pack Never use the battery pack with inverted polarity Always drain the battery before recharging to maximize the number of cycles Always charge the battery pack completely Always store the battery pack charged and in a cool dry place After a long period without use it is advised to charge discharge the battery 3 times before the full battery capacity can be used again Never incinerate or disassemble the battery pack or the battery cells The components used in the battery are corrosive and may be dangerous for skin and eyes In case of any harm contact a do
37. ls single or double The diameter The rotation speed The load The lubrication The mounting The envelope features The environment heat dust humidity In other words there is no absolute rule Two identical bearings evolving in different environments may produce different acoustical emissions The unit SDT 170 connected to a contact probe trends bearing wear to determine the life cycle of a bearing Users are forewarned of impending failure The measurements taken and memorized have to be considered as relative values and not absolute In general the critical operating threshold is fixed at a value of 15 dBuV above the value of the signal produced when the bearing is in perfect status normal operating baseline An increase of 10 dBuV is reason to suspect a dramatic change in the lubrication condition To optimize the use of the SDT 170 unit it is essential to listen to the bearings Listening to the noise of a bearing provides significant information on the measured values A regular noise associated to stable values indicates a normal functioning A strident noise indicates a lack of lubrication an overload or a rotation speed not adapted to the features of the bearing A crackling noise associated to unstable or high dBuV values indicates faults wear or breaking Use the headphones in conjunction with the digital readout to perform a total diagnostic predictive maintenance Chapter 13 Practical applications
38. m performance this charger is microprocessor controlled Charger type Specific for SDT 170 NiMH battery pack Power supply 230 or 110 VAC 15 10 50 60 Hz Output voltage 7 2 or 9 0 V DC depending on the operating mode Current 500 mA max Recharge time 5 to 6 hours typical in fast mode 12 to 14 hours typical in slow mode Protections Temperature limitation at 60 C 140 F Status indicator Two color LED type Isolation Double isolation Weight 425 g 15 oz Housing PPE 12 4 Internal ultrasonic sensor Function amp type Open type ultrasonic sensor Measurement range 10 to 100 dBu V Precision 3 dBuV over the whole scale Resolution 0 1 dBuV over the whole scale Signal to Noise ratio 5 dBuV typical Bandwidth 2 kHz at 3 dB Frequency 38 4 kHz 12 5 Contact probe The contact probe is supplied with a 1 20 m 8 2 ft cable equipped with a 7 pin LEMO connector probe is standard on SDT 170 M and MD versions option for SDT 170 S version e Q e S N Pa an T 3 9 aO Il 33 i cane Al mo 90 EMT 144 260 Chapter 12 Technical specifications 42 12 6 External ultrasound sensors optional 12 6 1 Open sensor 14 mm The sensor is supplied with a 2 5 m 8 2 ft cable equipped with a 7 pin LEMO connector 24 12 6 2 Open sensor 20 mm The sensor is suppl
39. menu Frequency band of the menu Parameters allows the user to choose from three operating modes These modes are preprogrammed frequency bands that are common to the application being tested There are three different designations e MEC to listen and to measure bearings with a rotation speed higher than 300 RPM e SLOW MEC to listen and to measure the bearings with a rotation speed lower than 300 RPM e US to listen and to measure the bearings of turbines and bearings with a speed higher than 10 000 RPM This mode is also most convenient for finding internal leaks hydraulic systems fluids 13 3 2 Coupling alignment A coupling aligned to its tolerances produces a smooth characteristic whistling sound A miss aligned coupling produces an irregular noise staccato in nature The SDT 170 can provide useful periodic inspection of pumps which may be out of alignment Operate as follows Place the probe MEC mode in front of the coupling or under the casing if there 1s one in order to isolate the coupling noise Avoid positioning the probe in the direction of the engine e Listen to the signal Generally a signal above 55 dB indicates a fast wear of the bearings due to a misalignment of the coupling Chapter 13 Practical applications 56 13 3 3 Barrels and bottles Leaks on the weld seams of bottles of gas for example under pressure are too small to be directly detected using the ultrasonic method The leak can be a
40. mplified however by spraying liquid Water oil or more lubricated oil over the seams Small bubbles are created where there is a leak The bubble burst provokes ultrasonic emissions of high intensity which are easily detectable in the airborne sensor of the SDT 170 or with the flexible sensor 13 3 4 Hydraulic circuits Operate as follows Place the probe US mode on the circuit e Close the valve and measure the signal value in dBuV The value corresponds to the turbulence created by the turbulence before the closed valve Open valve measure the signal value in dBuV produced by the passage of the fluid Any difference signifies a leak On systems like shock absorbers press circuits or bulldozers etc the presence of a leak is revealed by the formation of air bubbles The burst when put under pressure is easily detected by the ultrasounds produced 13 3 5 Compressor Piston compressors The functioning of piston compressors depends on the quality of the suction and repulsing valves To detect the presence of deposits of contaminating materials carbon or others on the valve seats operate as follows Mark each valve by means of the awl to maintain the same point each time Using the contact probe MEC mode take ultrasonic measurements once a month Any increase of the values indicates an increase of deposits on the valves and seats Screw compressors Measuring and listening to the ball bearings of screw
41. ne 25 Od Temperature Unt x oc Reha tetti Er ae 26 7 6 8 Frequency band seite eee eee ete 27 TAL Systemuntformation Ie et e re a RD IRR ARE red 28 8 Measurement display sss eene einen 29 8 1 Type OF sensore EAT RIEN RE RR N RS A ete e avevi dets 29 82 Time Date Autonomy cies eed e e e ie een 29 8 3 Phe measurement ice eR Re 30 8 amp 3 The measured value stone e te eae au Pee eg ine ele 30 8 32 The measurement Units ette tete teet ee eis 30 8 33 Theamplification level is iade ee e 30 SA The bargraph dct eripe E deae 31 9 5 OU SAQG us eren e au aet use Aas levies dedo uev chav de Dele ad new cals mate od 32 9 1 Available Configurations eerte eee t RT SUE e ev elena tee 32 9 1 SDT 170S Version ete e eee e eh ed m ve eb d RS 32 9 1 2 SDT 170 M and MD versions Usage without user programmed route 32 9 1 3 SDT 170 MD version Usage with user defined routes sss 32 92 Switching on the Unit o enfe le t e REA EO RR A 32 92 1 Self diagnostics us seated Reed eee e ede e ie bed de 32 9 2 2 Route selection M and MD versions sss 33 923 AmpllifiCatiOTi is io deo t IU E PSE e E aaa AEE eE ences 33 9 2 4 Taking a Measurement M and MD versions only eee 33 9 2 5 Storage M and MD versions only sese 34 9 2 6 Switch off the equipment eren ener enne 34 10 _ Recharging the battery pack 35 I0
42. ne 5 Ale rheequipment orones wii e EO EP 5 41 2 The battery packen Re RR RARIUS RINT S E ERR ees 5 41 3 Thecharger sese see diee ee He EE e iUe eed 5 AD Operator salety cu stet d EO ERR GER e It n teet eei 6 4 3 End of life destruction of the equipment 6 44 Usage mits ruin ERE trecenti Rt n diete A levet feed 6 6 Presentation icis ctis Ais de vi ore cv v d uae aa Ya eu Tee vi Tu Bieta v va 8 6 1 Fronteand back side 5 od repiten reco b ef eue GER ede 8 Olay Ihe displ y ee RENE ERI AR AEE TAS TR VO TRE 9 6 1 2 The Keyboard cci ete e eile o e Ee REIR 11 6 1 3 The rear connectors jt o E a ee E ee ee 12 6 2 The front YIew snesena eR he tes tiere RUE aen RE WIRE RE Ete eds 13 6 2 1 The internal ultrasonic senson sesser aeie nennen nennen enne 13 6 2 2 The infrared window except S and M versions 13 6 2 3 The connector for external sensors ene 13 6 3 The back views onus E ap i Intebeguinwiiuueg nie 14 6 3 1 The battery packs cscs eR ER ERE ee ee es 14 6 3 2 Theibattery sss eine iie Ue e p ere ete 14 he malnm menu ies este eiii Tie avai XS a HH uv De V E dad 15 FA Access the main menu ueste neither ede Nee e ren OESR 15 Td Switchontheequtipment eee Ee aed ed 15 TAD Automatic tests esae n rn UH ERE 15 7 1 3 The measurement screen M and MD version sss 15 FD The main menu eot ete e tea aee ERA UH e baro d CAS 16 7 21 Presentation side e E E T e de e etatis 16 1 3
43. nsidering the diversity of the materials since it is impossible to give precise reference values for every size and type of gear in the marketplace Use the comparison method when diagnosing gear problems especially if a baseline has not been established 13 3 8 Tightness control emission reception An ultrasonic transmitter such as SDT 8 or SDT 13 for bigger volumes must be used Operate as follows Place the transmitter inside the volume From the outside localize the passage of ultrasounds first with the detector only and afterwards with the detector equipped with the localization probe Ifthe volume dimensions allow it try reversing the procedure by placing the transmitter outside and the SDT 170 inside Certain volumes due to their shape and wall thickness can not be controlled by ultrasounds as they remain inside Therefore an alternative solution has to be found e Air ultrasounds put the volume under pressure and localize the leaks by means of the detector The detection limit is 4 cc per minute e Air liquid developer ultrasounds this method is used when the pressure is under 1 bar 15 PSI and when the leaks are smaller than 4 cc per minute Air water ultrasounds put the volume under pressure and submerse into water Any leak provokes a bubble and its burst produces ultrasounds even when the bubbles are scarcely visible This method allows controlling the tightness of a volume but the origin of the leaks c
44. nt area s of applications are included into this Users Manual SDT produces this manual with the sole purpose of supplying simple and accurate information to the user SDT shall not be held responsible for any miss interpretation of this manual Despite our efforts to provide an accurate manual it may contain technical errors beyond our control If in doubt contact your local SDT distributor for clarification While every effort was made to present a true and accurate text modifications and or improvements to the product described herein can be made at any time without corresponding changes being made to the manual This Users Manual and its contents remain the inalienable property of SDT 2 3 Reading The SDT 170 can be used for direct measurements versions 170 S M MD for measurement and undefined data storage 170 M version Note No PC Communication for measurement and defined data storage 170 MD version Note In the MD version routes are defined by the user with a software program included with the MD system Please refer to the Users Manual of the SDT 170 Data Management software for further details Chapter 2 The Users Manual 3 3 Warranty and responsibility limits 3 1 Warranty SDT International guarantees the SDT 170 unit against manufacturing faults for a period of 2 two years with the exception of the battery and accessories charger headphones sensors etc these are guaranteed for a period of 6
45. o return to the previous screen When at least one measurement has been stored on this memory location the following similar display will be shown Date Memory number Measurement number easure umbe 1 Measured value Measurement unit Date of measurement Example of the SHOW MEASUREMENT display Active key s Key Function Return to main menu by successive key presses A Move the inverted selection line upwards The first number is the last measurement made Y Move the inverted selection line downwards The last number is the first measurement made Enter validate the selected memory number This allows you to see more details about the measurement see next paragraph Chapter 7 The main menu 20 7 4 3 More detailed information When a particular measurement has been selected press the key The display will show the following information Memory mumber and HEH 1 Ld 1 i Current time and date charge measurement number selected THTEPH AL T F left in the battery Time when measurement was taken Measurement unit Sensor type Date measurement was taken Measured value Example of a display shown when detailed information of the measurement is recalled Active key s Function Return to the main menu with successive key presses e Return to the general information menu 7 5 Delete measurement M and MD versions only For the usage of the keyboard please see paragraph
46. oggle through the menu options Increment of the displayed information Use to select a number in a route the memory point the time the date the level of amplification dBuV and dBA only etc Downward movement of the selector Same as above Decrement of the shown information Same as above Storage of the shown measured value except Is only available when a valid measurement for the S version has been take by pressing the key The measured value is stored on the position selected on the datalogger Ro Only used when measuring ultrasound and ub except S version noise levels dBu V and dBA Acceptance of the choice except S version Used to accept a shown selection ae C Ks Activate backlighting Press the key to switch on the backlight The backlighting switches off automatically if the no buttons are used within a pre defined period of time Pressing the key again switches off the backlight On Off switch First key press switch on the unit The unit switches off automatically if no buttons are touched on the keypad within a pre defined period of time Second key press switch off the unit JQ Chapter 6 Presentation 11 6 1 3 The rear connectors This figure represents the location of the connectors Charger connector Communication expansion connector Headphone connector Connectors on the bottom of the equipment The battery charger connector This 3
47. ontrast ratio The display will show a screen similar to the one below Screen example when changing the displays contrast ratio A contrast ratio of 75 is ideal at room temperature Increasing the value darkens the display decreasing the value brightens up the display Active keys Key e gt Function Return to the parameter menu without taking in to account eventual changes Increases the contrast ratio Hold key for auto increment Decreases the contrast ratio Hold key for auto decrement Enter validate the adjusted contrast ratio and return to the options menu Chapter 7 The main menu 23 7 6 3 Backlighting This function adjusts the amount of time before the backlight automatically switches off to save the battery pack s power The backlighting accounts for about 40 of the power consumption of the unit The backlighting timer restarts each time a key is pressed When no key is pressed for the pre programmed time the backlighting will switch off automatically The display will show a screen similar to the one below LEHT TIHE An example of the screen that permits the adjustment of the backlighting timer The auto power off timer is adjustable between 1 and 100 seconds Active keys Key Function Return to the parameter menu without taking in to account eventual changes fi Increases the backlighting timer Hold key for auto increment Decreases the backlighting timer Hold
48. ower 0 to 250 mW per transducer Autonomy 12 to 38 hours depending on selected power Dimensions 350 x 230 x 200 mm 13 7 x 9 x 7 9 inches L x H x W Weight 6 Kg 13 2 Ib Operating temperature 10 C to 50 C 14 F to 122 F Chapter 12 Technical specifications 49 12 9 External sensors optional 12 9 1 Sound Level Meter Function Sound Pressure Level Meter Measurement ranges 30 to 140 dBA Precision 2 dB at full scale Resolution 0 1 dB over the whole range Type of filter A weighted compliant with CEI 651A Measurement unit dBA 12 9 2 Rotation speed measurement Function Tachometer Measuring range 60 to 30 000 RPM Precision 1 RPM Resolution 1 RPM Measurement unit RPM revolutions per minute 12 9 3 Air mass flow measurement Function Measure leak flow rate Measuring ranges 0 1 SCCM a 1000 SCCM depending on the sensor Precision 5 depending on the sensor type Repeatability 1 depending on the sensor type Measurement unit SCCM Standard Cubic Centimeter Minute SCFM Standard Cubic Foot Minute Chapter 12 Technical specifications 50 12 9 4 Temperature measurement interface Function J type thermocouple interface temperature measurement Measurement range 25 to 150 C et 50 to 450 C Precision 1 between 25
49. pin connector is used to make the connection with the battery charger provided with the SDT 170 Due to the active interaction between the charger and the battery equipment only this charger can be used to charge the batteries Connecting another charger will do serious damage to the equipment and void the warranty The communication expansion connector This 8 pin connector permits a connection to a PC by means of a RS 232 C type connection This is used to download measurements to a PC This port is also used to upload new software to the SDT 170 These functions are described in the SDT 170 Data Management software manual The headphone connector The supplied headphones are connected to the SDT 170 in order to listen to the converted ultrasounds Chapter 6 Presentation 12 6 2 The front view Presents itself as follows Connector for external sensors Infrared window Internal sensor The visible elements on the front side of the equipment 6 2 1 The internal ultrasonic sensor The SDT 170S M and MD all have an internal sensor for detecting airborne ultrasonic phenomena such as compressed air leaks vacuum leaks and corona discharge It is directly connected to the internal components and protected by the sturdy extruded aluminum housing This sensor is not waterproof Precautions must be taken to protect the sensor from humidity and projections of liquids Different waterproof sensors are available to be connecte
50. ple of battery capacity remaining Chapter 8 The measurement screen 29 8 3 The measurement Using the internal sensor for airborne ultrasonic detection is described in chapter 9 8 3 1 The measured value The measured value is shown in the middle of the screen It should be remembered that for each memory number the last four measurements can be recalled at any time by pressing the key and selecting the VISU MESURE menu Refer to paragraph 7 4 for more details on this operation CLOSED 13MH 1 ii UFER iL 1n 2i 1998 FLOW 1 3uF del del domam n Oe 35 a on ST a a S Oe Example of the display M and MD versions 8 3 2 The measurement units The measurement units are shown on the right side of the display 8 3 3 The amplification level This is displayed when using ultrasound sensors only The amplification level A symbol can be increased by pressing the key or decreased by pressing the key The optimum adjustment of the amplification level is assisted by means of the arrows located on the left side of the screen The symbol A indicates that the amplification level is to low and that a higher amplification level should be selected The symbol vy indicated that the amplification level is to high and that a lower amplification level should be selected The displayed arrows can be used to guide the operator when adjusting the amplification Optimum amplification is reached when no
51. r use the normal temperature scale or a temperature relative to absolute zero This selection is done in combination with the ISO Imperial selection see paragraph 7 6 6 CELCIUS KELVIN in the ISO METRIC system one of both scales can be used See paragraph 7 6 6 FAHRENHEIT RANKINE in the English Imperial system one of both scales can be used See paragraph 7 6 6 The display presents itself as follows when the ISO METRIC system is used KELVIN Example of the shown screen when selecting the temperature scale to be used Active keys Key Function Return to the parameter menu without taking in to account eventual changes Move up the inverted measurement scale type selector Move down the inverted measurement scale type selector lt gt Enter validate the adjusted contrast ratio and return to the options menu Chapter 7 The main menu 26 7 6 8 Frequency band This function is only accessible when a contact probe is plugged into the unit by means of the external sensor connector The user can select one of three operating modes depending on the application See chapter Applications for more information on when and how to use these frequency bands SLOW MEC Slow mechanical movements most sensitive MEC Normal mechanical movements US For the detection of internal leaks Select Frec SLOW HEC uz Example of the shown screen when selecting the measuring frequenc
52. se RR ee RED ae ERE RU RE ODD op ERES 57 IEEE CONDUCT It 57 13 3 6 Corona effect ooo UO aq 58 13 3 GEaTS i oe eR ru dete 58 13 3 8 Tightness control emission reception sesessseeeeeeeeennenns 58 13 3 9 Leaks detection and localization 59 13 3 10 Complex reducers cn diee e tet TUS TE REIS 59 13 3 I Continuous welds nett e re tre PUE ERE NT ert nete teh tete o one pas 59 135 9312 SV ALVES ie edo eerte eet itle oen iS E cU Ds eee ie 59 13 3 13 Vibrations 22i dete i cu pee rt Eigenes cito dr rede bie eee 59 Table of contents 1 Conformity statement Manufacturer SDT International n v s a Boulevard de l Humanit 415 B 1190 BRUSSELS BELGIUM Declares that SDT 170 Multifunction Detector making the object of this declaration is conform to the fundamental description concerning security stipulated in de EMC 89 336 CEE directive The equipment contains the C logo of being compliant to the current CE regulations To be able to operate by state of the art rules as stipulated in the directive It has been designed by the following rules The SDT 170 does not radiate electromagnetic waves EMC The SDT 170 is immunized against external electromagnetic radiation EMI The SDT 170 is protected against electrostatic discharges ESD Note the owner is obliged to preserve the present users manual with the obligation to pass it on to future users or been resol
53. sensor used Identification of the measuring points up to 1 000 points per route 10 characters alphanumeric code point Data transfer See communications Communication RS 232 C communication interface 19 2 kBaud IRDA communication interface 115 kBaud Battery pack Rechargeable NiMH Nickel Metal Hydrate Autonomy of 8 to 10 hours without backlighting Recharge time 5 to 6 hours Nominal Capacity 1 3 Ah Life span 500 to 1000 charge discharge cycles Recharge only with appropriate charger Auto power down Auto power down after pre set time Operating temperature 10 C to 60 C 14 F to 140 F Housing Extruded aluminum Weight Approx 700 g 24 69 oz with battery and holster included Dimensions 203x38x88mm 8x 1 5 x 3 4 inches L x H x W Holster Rubber resistant to hydrocarbons Fluor silicone 12 2 Battery pack For optimum performance this battery pack is equipped with an electronic management system includes digital serial number capacity temperature management Battery type 6 cell 7 2 V 1300mAh NiMH battery pack Dimensions 106 x 52x 12 mm 4 17x2 x 0 5 inches L x W x H Protections Short circuit reverse polarity and temperature protected Weight 190 g 6 7 oz Housing Polyamide 6 Epoxy contact area CSection 12 Technical specifications 41 12 3 Battery charger For optimu
54. sualize detailed information When a particular measurement has been selected press the key The display will show the following information Memory number shown Measurement number m im EHRSTPETETEOETTTMM condition alternating Um EE ii LIH E Measured value and VES H 1 measurement unit Time of measurement Time date and battery Type of sensor used for measurement Date of measurement Commarfd to erase Command not to erase Relative example of detailed information to erase a measurement Active keys Function Return to previous menu main menu by successive key presses Erase the selected measurement 7 6 Parameters For the operation of the keys refer to paragraph 7 2 2 7 6 1 Time Date This function allows the adjustment of time and date The display will show a screen similar to the one below DATE El 15 18 23 1395 Display example that permits to change the time and date of the units internal real time clock Chapter 7 The main menu 22 Active keys Function Return to the parameter menu without taking into account eventual changes Increment the inverted field Hold key for auto increment Decrement the inverted field Hold key for auto decrement Go to the next field to be modified Enter validate values and return to the options menu 7 6 2 DISP CRTST Adjust the displays contrast ratio This function permits to change the displays c
55. t corner of the display Select one of the menu lines by moving the inverted line downwards only when the V is displayed in the lower right corner of the display Enter validates the choice the inverted line Continue on the paragraph relative to the selected choice Activates the backlight This key is available at any time See paragraph 7 6 3 Switch of the equipment This function is always available OBA Ke KN a NF 7 2 3 The accessible menus There are five 5 menus ROUTE CHOICE MD version only Select a user defined route for storing measured data See paragraph 7 3 VISUALIZE MEAS M and MD versions only preview the measurements stored in the data collector point by point See paragraph 7 4 ERASE MEASURE M and MD versions only delete measurements stored in the data collector point by point See paragraph 7 5 PARAMETER use this menu to adjust time and date of the internal real time clock set the LCD display s contrast define the displays backlighting timer auto power down timer select the language type of measurement system unit of measurement relative to temperature and frequency range only available when a contact probe is attached to the equipment Continue on paragraph 7 6 SYSTEM INFO display s complementary equipment information on the display serial number software version language used serial number and type of battery number of times the battery has been recharg
56. the case of vacuum much of the ultrasound occurs inside the body of the vessel or pipe Therefore detection can require more skill and experience 13 3 10 Complex reducers Measurements are taken on different places so as to localize the defective bearing and to minimize the dismantling work Following indications can be taken into account e Well lubricated reducer smooth and regular noise value inferior to 40 dB e Badly lubricated reducer uniform but sharp noise value near the 50 dB Problems of gears clicking noise and values above the 60 dB Problems of bearings localize the highest value by an axial search instead of a radial one The measured value exceeds 60 dB 13 3 11 Continuous welds A magnetic sensor placed at the basis of the cathode of the continuous welding system detects a relatively continuous signal when the welding is good Any default produces either a signal loss or an increase of the dB values 13 3 12 Valves The contact probe US mode permits detection of gas or liquid flowing through an open valve A closed and tight valve will not produce ultrasounds Therefore any signal implies a leak Operate as follows Position the contact probe and listen to the movement of the valves and to the gas or liquid flow in the valve e Ifthe signal is continuous the valve is normally open normal valve the valve is blocked in open position defective valve Jfthere is no signal the valve is normally closed
57. tion valve leaks air in leakage around fittings tire retention bearings gears 13 2 8 General manufacturing Bearings valves steam traps compressors heat exchangers pneumatic systems pressure vacuum leaks gear gear boxes electric arc corona tracking in electrical gear 13 2 9 Gas plants Compressor valve analysis leak detection valves bearing monitoring Chapter 13 Practical applications 53 13 2 10 Facilities and buildings Bearings air handlers pumps motors compressors pressure leaks steam traps valve chillers transformers circuit breakers relays leaks in building envelope i e air infiltration water leaks 13 2 11 Marine Water tightness integrity tests hatches bulkheads pneumatic system leaks valves heat exchangers steam traps diesel injector timing condensers bearing monitoring refrigeration leaks pumps compressors electrical gear arcing air distribution boxes Manifold 13 2 12 Materials and composites Vacuum autoclaves bearings on pumps 13 2 13 Pulp and paper Steam traps valves bearing monitoring including slow speed heat exchangers pressure vacuum leaks and electrical gear 13 2 14 Power plants generation distribution Condenser in leakage heat exchangers steam traps valves boilers bearing monitoring pumps turbines arcing and corona in electrical gear 13 2 15 Textiles Bearings valves pressure vacuum leaks steam traps 13 2 16 Food processing
58. tions 47 12 8 2 SDT 8 fixed power multi transmitter This unit is a small portable fixed power multi head 8 pieces ultrasonic transmitter The SDT 08 uses the bi sonic mode only It is equipped with a removable rechargeable Lead Gel battery pack Battery pack 12 V 1 2 Ah Sealed Lead Gel type Frequency bi sonic 39 5 kHz f 10Hz Power 125 mW per transducer Autonomy 2 5 hours Dimensions 160 x 100 x 95 mm 6 29 x 4x 3 75 inches L x H x W Weight 1 5 Kg 33 Ib Operating temperature 10 C to 50 C 14 F to 122 F Chapter 12 Technical specifications 48 12 8 3 SDT 13 adjustable multi transmitter This unit is a microprocessor controlled portable adjustable power multi head 13 pieces ultrasonic transmitter The power of each transducer can be adjusted separately between 25mW and 250mW in 6 fixed steps A display show s the current power setting used on each transducer group The SDT 13 transmitter can be used in directional bi sonic or mixed directional and bi sonic mode The unit has an RS 232 C type connection to be connected to a personal computer for accurate power adjustments 0 to 250mW in 256 steps pre programmable power sets It is equipped with a removable rechargeable Lead Gel battery pack Battery pack 12 V 6 5 Ah Sealed Lead Gel type Frequency Directional 39 50 kHz bi sonic 39 5 kHz fs L 0Hz P
59. uage selector Enter validate the selected language and return to the options menu e gt 7 6 6 Measurement system ISO IMP This function defines the unit system that is used for the measurements ISO The measurements will be done in the ISO METRIC system The mass flow sensor will read in SCCM Standard Cubic Centimeter per Minute Pressure will read out in Bar Light intensity will read in Lux Temperatures will read in degrees Celsius or in degrees Kelvin depending on the setting see paragraph 7 6 7 IMPERIAL The measurements will display the English imperial measurement system The mass flow sensor will read in SCFM Standard Cubic Foot Minute Pressure will read in PSI Light intensity will read in Foot Candle Temperature will read in degrees Fahrenheit or in degrees Rankine depending upon the setting see paragraph 7 6 7 The display will show a screen similar to the one below Select Unit METRIC IMFERIAL Example of screen that permits to change the measurement system Chapter 7 The main menu 25 Active keys Function Return to the parameter menu without taking in to account eventual changes Move up the inverted measurement system selector Move down the inverted measurement system selector Enter validate the measurement system and return to the options menu 7 6 7 Temperature unit This function defines the measurement system used for temperature measurement You can eithe
60. ual must be read carefully and completely prior to anyone using the equipment 4 1 1 The equipment Can be used alone or in combination with an external sensor or an adapted ultrasonic transmitter SDT 8 for example Must be used outside of any classified zone by the fact of the absence of intrinsic security certificate or not being explosion proof Must not be submerged in liquids of any kind Caution should be used to ensure that airborne ultrasonic sensors are kept dry and clean In situations where high levels of dust and moisture are present use environmentally sealed sensors which are designed for harsh applications All sensors must be used within the temperature range and humidity limits outlined in the technical specifications Can be used with the battery charger connected When operating the equipment in this way the user must respect normal precautions for equipment under main s power supply proper power source voltage amperage condition of the cables etc 4 1 2 The battery pack Contains MiMH type batteries Nickel Metal Hydrate operating voltage 7 2 V Short circuit of the battery pack s connections can be dangerous Must not be thrown into a flame or fire Must be protected from any mechanical shock that can lead to a rupture of the battery pack s outer casing that can compromise the life of the batteries Must be recharged at least every 3 three months when not used for long periods of time 4 1 3 The c
61. unit this reduces the life of the battery Once a charging cycle has begun it should be allowed to finish Chapter 10 Recharging the battery pack 37 10 3 3 General Recharging the battery pack while outside the 170 is best Advantages The battery pack is always charged in fast mode The unit can be used with another battery while charging the empty one Disadvantages none 10 3 4 Operation Proceed as follows Shift the battery lock towards the front of the unit towards the build in sensor Remove the battery pack by turning the equipment while maintaining the battery lock towards the front of the equipment towards the build in ultrasonic sensor Place your hand under the battery pack and gently tap the unit against your hand The battery pack will fall release easily using this method Battery pack L7 Battery lock To remove the battery pack unlock the battery lock Plug the connector on the end of the battery charger into the connector on the battery pack Plug the battery charger in the 110 or 220V socket depending on the type of charger supplied with your device The charging cycle will take about 5 to 6 hours to be completed Please refer to paragraph 10 2 2 for more information on the status light on the battery charger Battery charger Status light Battery charger SE Ld battery pack P Le connector Connection of the battery charger to the battery pack Chapter
62. vable any time regardless of the sensor type used The internal memory capacity of the equipment permits storage of up to 15 000 time dated measurements of any sensor type MU E E22 B l di dH dd 8 dEul 3 i 23798 33 5 dew The last four measurements are stored in the equipment Chapter 7 The main menu 17 7 3 3 Definition of a Memory Number Definition A memory number is an electronic page where data from any of the sensors is stored For each route a maximum of one thousand independent storage locations numbered from zero to 999 are available For each storage location the 170 stores the data measured value unit type of sensor used time and date of the last four measurements made The memory works on the theory of first in first out so the fifth oldest measurement is automatically deleted Usage A memory number is generally attached to a physical location For example workshop 3 waste water return pump could define memory location one For each memory location the physical location in reality the user defines the type of sensor to be used In this example the ultrasonic sound level on the front pump bearing and the pumps rotation speed and temperature is to be measured For each memory location measurement point a label can be defined and uploaded from a personal computer in the SDT 170 s memory MD version only See the corresponding user manual of the SDT Data Management software for more in
63. y band for the contact probe Active keys Key fi e gt Function Return to the parameter menu without taking in to account eventual changes Move up the inverted contact probe frequency band selector Move down the inverted contact probe frequency band selector Enter validate the selected contact probe frequency band and return to the options menu Chapter 7 The main menu 27 7 7 System information For the operation of the keys refer to paragraph 7 2 2 This function permits the visualization of the system information and is a sequence of three consecutive screens Information Numbers It consists of information relative to the type of equipment serial number of the unit and contains information relative to the equipment version and software version and copyright message mE 178388616 1H 17 c SOT Int 1997 Explanation of displayed system information Complimentary information screen 1 starting from the previous display press the key The display will show information relative to the internal electronics and system software This information is only useful to a service engineer in case of a problem IFO SCREEN EEREN 3 BUILD 17 jg UPDATE 1 2 Example of the complementary information screen 1 Complimentary information screen 2 starting from the previous display press the key The display will show information relative to the selected language serial number and type of
64. y means of pressing the or key until the amplification adjustment indicators up or down pointing arrow at the left of the screen are not shown anymore E D Amplification adjustment indicator Amplification level in ultrasound mode Example of measurement screen with amplification indication and amplifier adjustment indicator 9 2 4 Taking a Measurement M and MD versions only Press the key The maximum or peak value is displayed for as long as the key is pressed When the M key 1s released the 170 stops measuring The display shows the highest measured value recorded while the key was pressed To make a new measurement and erase the previous maximum value just press the M again Chapter 9 Usage 33 9 2 5 Storage M and MD versions only To store the measured value in the data logger memory proceed as following Once the measured value is displayed on the screen see previous paragraph press the M key to begin the storage operation Select the location in the data collector where you want to store the measurement by using the Q or key Hold the keys down to make the selector move faster Store the value by pressing the q M Key The screen will show the type of sensor that was used time date measured value and the measurement unit used Return to the measuring screen by pressing the or keys Note The measured and stored values are automatically stored in the previously se

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