Innovation Technology SF6 User's Manual
Contents
1. 5 Repeat the calibration if necessary and remember to accurately hold the probe in the leak The Exit button can be used to abort calibration at any time The original calibration factor then remains unchanged 11 1 Set clock The clock keeps time even while the instrument is off Adjustment may be necessary for the following Summer winter time changeover Different time zone Normal long term adjustment If the battery has been disconnected Should this happen the instrument automatically opens the set date time screen after power on This is quite straightforward use the pads to change and when correct press Page 11 12 0 User set up This gives access to a number of parameters which determine the behaviour of the instrument They are described as follows and all are selected using the up down arrows and changed using the buttons 12 1 Peakhold gauge This due to the short recovery time after detecting a leak this function is helpful The peak value will be held on the handgun display for the time you select In position OFF no peak hold occurs 12 2 Peakhold screen on the touch screen two leak rate displays are visible the main display in big digits and the auxiliary display below it One of them always shows the live reading while the other holds a peak value if selected This is factory pre set to AUX DISPLAY In this position AUX DISP the big display2. This is the delay after which the selected standby mode is entered When choosing the delay consider the following For short delay times up to 10 minutes use the LIGHT SENSOR option For longer delays when battery saving is a concern more than 10mins use POWER DOWN This shuts down the instrument in the same way as pressing the OFF button 14 1 RS232 Protocol The serial interface supports all common handshake protocols The required setting depends on the device to be connected For a computer select For a printer please see its manual for the appropriate protocol Other parameters are fixed at 9600 8 N 1 Page 13 14 2 Sound type Using the buttons select sound output you prefer HARMONIC or TRADDITIONAL If more than one instrument is used in a confined space it may be useful to set them to different sound types 14 3 Sound begins at This allows you to set the display value at which the sound begins For leak detection we suggest settings of 20 to 50 If you use higher settings leaks may be missed Irrespective of the level selected the handgun and touch screen display operates as normal and shows all response to leaks 14 4 Live tick If activated a slow tick will be heard as long as GAS CHECK P1 is ready to measure 14 5 Filter Threshold Factory pre set to 5 14 6 Filter Count Factory pre set to 10 These parameters control the ppm mode signal filter Although they are not supposed to be modified by
3. it is recommended to press the CIRCLE key occasionally to zero the detector to ambient conditions TRIANGLE The RESULT STORE key The peak reading shown on the touch screen is transferred to memory for later printout 6 1 TOP CAPS A choice of top caps are available Standard P1 100 0003 extended P1 100 0004 and extended with a Stainless Steel tip P1 100 0005 This has a 5mm diameter and is designed for leak searching in enclosed spaces or where rough welded surfaces must be checked 6 2 FILTERS It is essential that FILTER P1 100 0005 is always fitted This provides a small micron filter and provides a seal for the secondary sinter This sinter forms part of the detector vacuum cell and is critical to good stable and accurate operation The flow down the top cap past the filter and into the vacuum chamber is constantly monitored The vacuum automatically compensates for filter restriction to a point when accuracy is threatened At this time the LOW FLOW ERROR is displayed and the filter should be changed All these items are available ex stock from ISL or your local agent Page 5 7 0 GETTING STARTED This assumes you have just received the instrument and it is NOT powered up 1 Plug in the sensor and connect the handgun to the console Align the red marks and press home 2 Connect to a mains electrical supply AC 85 265V An opening screen is now displayed which identifies the major components of the instrument You wil
4. not English Please advise us of any changes which will make this easier Two modes of operation are available volume loss time cc sec leak detection and ppm concentration of SF6 in air All controls and displays required for detection are found in the hand unit Accurate and clear measurement is achieved from the console touch screen display Measurements can be stored in the instrument and later transferred to a printer or computer A battery powered printer is available Results may also be downloaded to a computer via the RS2323 link The only item which needs to be replaced in normal use is the Smart Sensor probe Smart Sensors contain a microchip programmed with specific sensor information At Switch ON the console automatically reads sensor information Smart Sensors are not radioactive and contain nothing harmful Life is approximately 200hours Sensors are changed by switching OFF the instrument and plugging in a replacement Three 3 are supplied and available as exchange items The operation of the instrument and sensor require permanent and precise control by software Any faults give immediate error messages which are then displayed on the touch screen This in conjunction with the sample flow monitoring function ensures the instrument reliably determines and displays all fault conditions All vital user parameters are password protected against unauthorised entry Access to the touch screen is required for set
5. shows the live reading while the auxiliary display holds the peak If set to MAIN DISPLAY the peak hold is held on the big display while the auxiliary display shows the live reading The peak hold seen on the console display represents the value that is stored in memory when the STORE key is pressed Pressing either the STORE or CLEAR buttons resets this 12 3 Display units The touch screen display and alarm level entries as well as reference leak values will operate in the units you select Use the buttons to change between E 6 ml sec E 7 ml sec gm yr and ppm For gm yr and ppm measurements all the above parameters are held separately and do not need to be re entered when changing between leak rate and concentration modes There is also a separate calibration factor for each mode Gm yr weight loss and ppm concentration measurement should not be used for leak detection Leaks are measured in volume loss time ml sec ppm mode demands a higher sensitivity than leak rate mode When measuring low ppm concentrations the display responds considerably slower Response time depends on the actual concentration and at very low levels may exceed 10 seconds In the present software version the ppm mode is still experimental state Therefore all information is approximate For precise ppm measurement it is recommended that calibration is made to a 10ppm SF6 in air source For more information please contact ISL De
6. top cap and the sinter leading into the detector vacuum chamber To access the filter first switch off then remove the probe and hold it upright CAREFULLY unscrew the top cap and the small brass filter will be seen on the sinter housing It is not possible to reclaim this filter Part No P1 100 0005 Dusty environments will slowly reduce the detector s performance At a point when this threatens the ability to leak detect the sensor will shut down with a screen displayed notice Bigger particles are captured in a filter and tend to obstruct it The reduction in flow is automatically compensated but again only to a level which will not threaten performance On power up the instrument first scans the characteristics of the new sensor and sets these values in the console memory this may take 10 50 seconds 15 2 Changing the Probe To change the sensor You Must Power Down Never unplug the probe while the red lights on the console are still on To remove the probe just grip the plug at its sliding piece and pull it straight out When inserting the new probe align the red marks at the plug and socket and push 16 0 Known Problems 16 1 Power Up During Transport During environmental testing it was found that it is sometimes possible that should the instrument be dropped the force may switch the instrument ON Under normal circumstances this is relatively harmless as the handgun is normally unplugged if the instrument is packed for tr
7. 13 14 1 RS232 Protocol 13 14 2 Sound type 14 14 3 Sound begins at 14 14 4 Live tick 14 14 5 Filter threashold 14 14 6 Filter count 14 15 0 Tech data readout 14 15 1 Probe Sensor Filter life 15 15 2 Changing the Probe 15 16 0 Known problems 15 16 1 Power Up During Transport 15 16 2 Power Up after fuse has been removed 15 16 3 Pre set passwords on delivery 15 16 4 Settings on despatch 16 16 5 Citizen printer 16 16 6 Spares and consummables 16 3 0 GENERAL This manual is addressed to those responsible for and using this instrument and applies to software version V1 37BB 3 1 SAFETY Please read this paragraph carefully before operating the instrument Do not open any part of the instrument there are no user serviceable parts inside Protect from moisture and water Use in dry conditions Use only to leak test on voltage free and grounded switchgear Touching a finger gently to the screen surface operates the touch screen DO NOT USE TOOLS TO TOUCH THE SCREEN Page 2 4 0 SYSTEM PROPERTIES Introduction GAS CHECK SF6 is a portable mains independent instrument for leak detection and leak measurement of SF6 gas Although designed for SF6 other gases with a high affinity for electrons such as refrigerant R12 may also be detected Although designed for operation without training we recommend that this manual be read before use This manual and the instrument have been designed to be understood by users whose first language is
8. INSTRUCTION MANUAL GAS CHECK SF AN INSTRUMENT FOR THE LOCATION AND MEASUREMENT OF LEAKS IN SF FILLED ELECTRICAL SWITCHGEAR User Manual iss 01 Software Version V1 39BB INNOVATION MOVATIVE LEAK DETECTION SOLUTE Iv Registered in England No 2359038 VAT No 532 2024 00 Email info ionscience co bsile i Contents Subject 3 0 3 1 4 0 4 1 10 0 10 1 10 2 10 3 10 4 10 6 Software version V1 39BB Description General Safety System Properties introduction Console controls Handgun displays and controls Handgun analogue display Handgun display LED s Handgun buttons Top Caps Filters Getting started Measuring operation Possible fault conditions during operation Low flow error Flare stall Low battery voltage Switching OFF Switching OFF in case of fault User setup Set volume Contrast Open Operator Level Operator ID Data printout Clear data memory Open Supervisor Level Set alarm levels Operator ID mode Do not force operator ID Force operator ID by name Force operator ID by key code Access codes Changing passwords Terminate and lock supervisor level Open Tech level Calibration Set clock Page 1 Page an r RA ww NNN OD OD N N CO 12 0 User setup 12 12 1 Peak hold gauge 12 12 2 Peakhold screen 12 12 3 Display units 12 13 0 Desen Factor 1 13 13 1 Desen Factor 2 13 13 2 Standby mode 13 14 0 Standby delay
9. SIGNAL Switches on whenever a reading above 2096 alarm level was taken Reset by STORE or CLEAR key 5 ALARM This light is on as long as a reading equal to or above the alarm level is taken Yellow MESSAGE Prompts the operator to read a message that is present on the LCD screen Page 4 6 0 HANDGUN BUTTONS SQUARE This has two functions MEASURE MODE and SEARCH bar graph MODE On power up the SEARCH mode is automatically selected the touch screen displays a bar graph This is ideal for fast and ultra low level leak detection 10 E 8cc sec In this mode high accuracy is not possible just leak detection and location When a leak is discovered the audible alarm sounds and the bar graph as well as the handgun analogue gauge responds usually full scale To change from SEARCH to MEASURE mode press and hold the SQUARE button for 2 seconds the RED light comes on and the display changes to 0 00 You are now in the MEASURE high accuracy mode If you have selected Peak Hold Console leaks will be measured and held ready for printing if required Pressing SQUARE once gives desensitise x1 The second press gives desensitise x2 as pre set in USER SET UP section in touch screen The LED marked SPECIAL flashes slowly with x1 and faster with x2 CIRCLE This zeroes and cancels desensitise and may be used at any time During the short zero time the lights change from RED to GREEN Do not leak test during this time During normal use
10. all At this point the instrument must be switched OFF and the sensor changed 7 5 LOW BATTERY VOLTAGE If the battery becomes discharged the operator is warned of the pending shut down If main s power cannot be made available operation can be resumed for a short time but the instrument may now shut down at any time without further warning 7 5 SWITCHING OFF During system shutdown the processor updates the memory releases vacuum and turns OFF the touch screen To shutdown press one of the on off keys for several seconds A time bar on the screen visualises the hold time When the time bar is complete the button should be released If it was held down longer the shutdown sequence will not finish properly 8 0 SWITCHING OFF IN CASE OF FAULT Normally shutdown is controlled as described above Should this process be changed by a serious failure the instrument can still be switched off under hardware control This activates whenever one of the on off keys is continuously held down for approx 10 seconds Page 7 8 1 USER SETUP This paragraph describes the parameters that determine the behaviour of the instrument The first step is always Activating the Menu System In normal operation the instrument can be taken to programming mode by simply touching the touch screen From the main menus items can be selected Touching the screen will display the following menu structure Set volume Contrast O
11. and use LF to advance the paper Now switch SEL ON and you can now print the stored results by tapping the screen entering OPEN OPERATOR LEVEL then DATA PRINTOUT The printer will then operate Note that if you try to print with SEL OFF the screen will show print in progress and then time out If you have entered your operator or company information in This will appear in the printed message 16 6 Spares amp Consumables Description Part No Sensor probe complete Steel tipped top cap 25mm Filter Manual Iss 07 Software version V1 39BB Compiled by Mel Vinton P1 100 0000 P1 100 0004 P1 100 0005 Page 16 Operator ID see 9 1 page 8 supplied in packs of 3 supplied in packs of 10
12. avelling In this situation as the instrument does not recognise the sensor it powers down after a short time We recommend removing the fuse from the main s socket prior to transportation particularly air transport 16 2 Power Up after transportation if the fuse has been removed The real time clock must be set Make a calibration check and re calibrate if required using the Portable Reference Leak 16 3 PRE SET PASSWORDS AT DELIVERY On delivery all passwords are set to 000 To change them please refer to paragraph Changing Passwords Page 15 16 4 Settings on despatch as found User Setup Instrument serial Number P1 Peak Hold gauge Peak Hold screen Display Units Desen Factor 1 Desen Factor 2 Standby Mode Standby Delay RS232 Protocol Sound Type Sound begins at Live tick Filter Threshold Filter Count 16 5 Date 0 5s AUX DISP E 6 ml s 5x 10 x Light sensor 15 min DTR DSR HARMONIC 2096 Alarm OFF 5 10 A Citizen dot matrix printer type iDP together with a mains transformer is supplied as an option Additional printer rolls can be obtained from ISL or from your local computer printer supplier Below the paper roll is a DIL switch having 4 switches With DTR DRS selected from the user set up ALL 4 SWITCHES MUST BE IN THE OFF POSITION Switch the printer ON using the side mounted slide switch The POWER and SEL green lights should be lit Press SEL to turn OFF the light
13. i e the entry is terminated with the edit line empty the instrument will operate normally but data printout is not possible Page 9 10 2 Force Operator ID by key code If selected a password key code number entry screen is opened after power up The operator is now required to enter his personal key code If nothing or an invalid key code is entered data printout is not possible A corresponding message must be confirmed before operation is allowed Key codes can be assigned for 6 different operators please refer to Changing Passwords section 10 4 10 3 Access codes 10 4 CHANGING PASSWORDS Use one of the eight buttons to select the password you wish to change then enter the password as usual The password can be up to 5 digits ATTENTION Be careful when changing the Supervisor Level password Should you by mistake enter an incorrect password you are in trouble 10 5 Terminate and lock Supervisor level Press this to return to main display 10 6 Open tech level Enter 000 or new code then keypad press Page 10 11 0 Calibration The GAS CHECK SF6 is unique in that completely separate values are stored for each of the display modes This means that if you want to measure ppm or gm yr these values must be calibrated before use Calibration follows the same easy routine as with cc sec calibration using the Portable Reference Leak Regular calibration furthe
14. l hear the vacuum system initialising and a valve operation This is setting the required vacuum level Approx 20 30 seconds later the instrument will enter SEARCH MODE High sensitivity leak searching can now begin You may find the display difficult to read due to different light levels Tap the screen with your finger this will change to a menu Touch Set Volume Contrast you will now be given a menu move to Display Contrast coarse and press the move this to change contrast When the screen is right for you press Exit Should this not be the case please refer to paragraphs Possible Fault Conditions During Operation and Switching Off in Case of Fault in this manual 7 1 MEASURING OPERATION The GAS CHECK is ready to measure whenever the big digit leak rate display is visible on the console screen 000 this will only happen while Sensor is working within operational limits Sample flow is correctly within tolerance All self diagnostic checks are successful The green LED READY on the handgun will be on as long as the reading is below 20 of the alarm value Clear the reading by pressing the CIRCLE key 7 2 POSSIBLE FAULT CONDITIONS DURING OPERATION In case of a relevant fault condition the status indication lights will change from READY to NOT READY plus MESSAGE The operator should now read and confirm the error message on the screen The following fault conditions may occur Pre
15. ngs were stored using the STORE key on the hand unit these can be printed or transferred to a computer After printout the data memory is cleared See section 16 5 page 15 for ISL supplied printer settings and information 9 3 Clear Data Memory Use this function prior to beginning a new set of measurements to remove invalid data from memory Exi Press to return to normal screen display 9 4 Open Supervisor Level Please enter access code You need password entry this is factory set at 000 Enter 000 or new code then keypad press 9 5 Set Alarm Level Enter the alarm level for the leak rate you wish to alarm at This level alerts the ALARM LED in the handgun Only the alarm level corresponding to the chosen mode ml sec or ppm can be entered Valid alarm levels are for leak rates 0 5 E 6 5 E 7 ml s to 20 E 6 200 E 7 ml s and 5 to 1000 ppm concentration Values beyond these limits are rejected 9 6 Operator ID mode It may be useful to be able to identify the operator from the data printout there are two stages to ensure this 10 0 Do not force operator ID Selected this if no data printouts are to be made 10 1 Force Operator ID by name Select this only If data printout is to carry an operator s name If selected the operators name entry screen is opened after power on The operator may now enter his name or short code If nothing is entered
16. pen Operator Level Open Supervisor Level Open Tech Level Exit In the following it is presumed that this menu is displayed on the screen Passwords and Numeric Values must be entered as required Numeric or alphanumeric keypads appear as required Just touch the appropriate buttons using to delete the last digit and RETURN to confirm the entry In some cases the present value of a parameter will already be entered You may then confirm or delete and re enter 8 2 Set volume Contrast Using the three slider type controls on this screen select contrast for best visibility Be careful with the contrast if you bring the slider to its extreme positions it is possible that the screen appears blank If this happens and your finger is still on the screen then run it straight upwards until the screen contents reappears The and buttons are for fine adjusting the contrast These provide better resolution than the sliders Every 5 presses advance the slider one step 9 0 Open Operator Level This menu displays to following 9 1 Operator ID If the operator s name is required on the data printout the name can be entered here If the mode Force Operator ID by Name is active this screen will automatically appear after power up If nothing is entered normal operation is possible but data printout is not possible Page 8 9 2 Data Printout If readi
17. r improves the precision of measurement over the standard factory set calibration For cc sec volume loss over time mode You will need the Portable Reference Leak PRL supplied as an option with the instrument and available from lon Science Ltd The leak rate will be approximately 5x10 6cc sec 5 E 6cc sec Press Calibration The screen now asks you to enter or confirm the leak rate of the PRL or gas concentration when in ppm mode If this is to be changed then use the keypad to enter the SAME leak rate as printed on the PRL As long as the same PRL gas concentration is used this value needs to be entered only once Just press RETURN to confirm it each time you make a calibration On pressing RETURN the calibration process begins Background Air is measured first which takes 4 seconds A time bar is displayed along with an audible bleep The display then instructs the operator to put the probe to the reference leak When this is done the final calibration step begins automatically and takes 6 seconds During this time it is important to hold the probe accurately in the reference leak otherwise an incorrect calibration may occur Should the leak be missed or the probe removed by mistake just move the probe off the leak The time bar is then reset and the process can be re started When calibration is complete the instrument returns to normal mode Now check the portable reference leak which should be the same reading
18. sens Factors Allow large leaks or large concentrations to be displayed Page 12 13 0 Desens 1 Factory pre set at 5 On a high or gross leak press the GREEN handgun pad once This desensitises by x5 the Green special lamp will flash 13 1 Desens Factor 2 Factory pre set at x5 Pressing the GREEN handgun pad again invokes a further desensitise the lamp will flash faster To change the desens factor use the buttons 13 2 Standby mode This useful feature allows you to programme a standby sleep time from when the instrument is last used or moved This allows the instrument to save power and component life When the instrument in the standby mode sleeping the NOT READY LED in the handgun will flash slowly The instrument returns to normal operation when the hand unit is picked up or moved Pressing the buttons gives these choices Factory pre set to LIGHT SENSOR NONE LIGHT LIGHT SENSOR POWER DOWN In LIGHT SENSOR mode the following will occur The touch screen screen contrast sensor and sample flow regulation are switched off Vacuum is released Lifetime of all major components is saved If POWER DOWN is selected the instrument will not wake up when handgun is moved Before standby mode is entered a screen message and acoustic signal are given At the end of this signal provided the handgun has not been moved the instrument enters standby mode 14 0 Standby delay
19. ssing the ZERO button before and after critical leak testing will zero the instrument to ambient conditions and compensate for background levels of SF6 in the air Page 6 7 3 LOW FLOW ERROR The flow through the sensor is controlled by the vacuum pump The level of vacuum required to maintain the required flow can be seen in the lower LH screen Should the sample intake of the sensor be partially or totally blocked the instrument will first try to compensate by increasing the vacuum If unsuccessful an error is reported You have the choice to confirm one of the following instructions TRY TO CONTINUE Instrument will try to resume normal operation This is useful if the blockage can be overcome with a higher vacuum The LOW FLOW ERROR may also occur if the sensor cap was changed for the capillary probe this needs higher vacuum to maintain the sample flow BEFORE changing probes and sensors ALWAYS switch OFF The ideal vacuum levels for a clean filter are 100 to 300mb To fit the capillary probe FIRST switch the instrument off This allows the new flow levels to be automatically compensated 74 FLARE STALL This relates to sensor condition Two reasons are possible for this 1 Very high concentration of SF6 many times above the measuring range 2 High vacuum in the probe caused by a partially blocked or aged sensor The instrument will attempt to compensate for these until a level is reached where the detector will st
20. the user here are some hints about their operation The main function of the filter is to block out short wave noise Filter Count represents the number of measuring cycles over which the signal must be continuously above or below the average value For high signals the filter is partially bypassed to gain acceptable rise times at high ppm concentrations Higher values for both parameters result in better smoothing and the expense of longer response times especially with low concentrations Lower values sacrifice smoothing for improved response Settings of 0 completely bypass the corresponding filter branch Values of 5 10 for Filter Threshold and 5 20 for Filter Count have proven to be average settings 15 0 Tech Date Readout This is a log record of the complete instrument and sensor It records use and status of all major components Serial numbers hours of operation and other data are displayed These are mainly for service purposes These cannot be selected or changed as they are simply a record Press EXIT to return to previous menu and EXIT to return to main display Page 14 15 1 Probe Sensor Lifetime filter Sensor life is presently estimated to be 200 hours of continuous use in a normal industrial atmosphere Sensor life is affected only by contamination in the air sample being drawn through probe Therefore it is dependent on ambient conditions Filter This is positioned between the
21. up only If used outside or in difficult conditions the transparent cover over touch screen can be left locked 4 1 CONSOLE CONTROLS 1 Touch screen for numeric leak rate display and parameter entry Two red on off buttons located at the front and right side panel Both are lit when the instrument is on White light combines mains supply and battery charge control This flashes while on charge and is permanently on when the battery is full A Key allows the transparent front cover to be locked during use Page 3 5 0 Handgun Displays and Controls 40 50 60 70 will S0 Alarm3 y 30 9 Al The following controls are found on the hand unit 5 1 Analogue gauge displays the response to leaks in 96 rather than an absolute value displayed on the touch screen and shows the leak rate in the form of a percentage of the alarm value This is clearer and easier for an operator 5 2 Handgun Six LEDs indicate status COLOUR Bl DESCRIPTION 1 READY TO MEASURE Normal operation If ON you may confidently measure This is OFF whenever the instrument is in standby or programming mode error condition or the actual reading is above 20 of the alarm level EN _ NOT READY This light is on whenever the instrument is in the programming mode or an error condition exists It flashes during standby mode SPECIAL Desensitise functions flashes when one of them is active Yellow 4
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