EGT-Gauge USER MANUAL (FI)
Contents
1. will be shown shortly on display and immediately after that the gauge will show the current temperature of the sensor Power can be switched OFF by pressing upper button for a couple of seconds as soon as power is off the display will also be off Under the same upper button there is additional operationality off backlight more on chapter 3 4 Peak value and warning light value are in memory and wont disappear during power OFF Chancing battery however resets these values and gauge needs reprogramming 3 2 Reading and zeroing peak value When ON the gauge will save the highest peak value in its memory Peak temp can be read from the memory by shortly pressing the lower button If lower button is pressed for longer time first 2 seconds there will be peak value on display Then there is shown 0 for indication of zeroing the peak value from the memory Peak value will be kept in the memory even when the gauge is turned OFF Battery changing resets this value 3 3 Adjustment of the warning light Warning light adjustment can be done by the lower button After a long pressing of the lower button described in the chapter 3 2 there will be a further warning light value showing and adjusting If lower button is continuously pressed after peak value operations the gauge will show it s current warning light limit If still pressed the warning light value will scroll up with the steps of 5 C If value is scrolled after 995 C it will roll ov2. PIILIx Design USER MANUAL EGTx Battery Operated Exhaust Gas Thermometer 2015 PIILIx Design J rvensivuntie 11A Fl 33100 TAMPERE FINLAND www piilix design fi UULSX DESIGN Table Of Contents 1 TECHNICAL DETAILS ii XaeneralTh O E 1 3 Technical Gar ane ters ps sistivscivscesestvaagoncusctidessesnenesnecdussusisnevuctier 2 ASSEMBLY BA EEN 2 3 Gauge assembly E 3 USER MANUAL 34a ON OFF EIERE 3 2 Reading and zeroing peak value ues eiit 3 3 Adjustment of the warning light uan euis i aobotdd 3A Using OF begleet eg niensis eres potopor cost esheets 3 5 Changing the EE T ME ICTU UT Em 3 7 ZO EE E 3 8 WARNING AND WARRANTY iode istis hbt tides Revision A Date 13 09 2015 Written Veli Pekka Vuoristo QO 9X DESIGN PIILIx Design 2015 2 DUSX DESIGN TECHNICAL DETAILS 11 General info EGTx is a one channel battery powered microcontroller based exhaust gas Picture 1 EGTx Exhaust Gas Thermometer 1 2 Technical parameters SENSOR not included in all sales packages Type of sensor Type of tip Material of sensor body Temperature range of sensor Temperature range of sensor cable Temperature range of sensor connector GAUGE Measurement range Measurement resolution Measurement accuracy 0 999 C Current consumption no lights Type of battery Operation time without lights 25 C Operation time with backlight ON 25 C Operation time all lights ON 25 C Operat
3. RY RISK OF SHORT CIRCUITS AND TOTAL FAILURE OF THE GAUGE Due to time in stock and the small data retention current consumption the battery supplied with the gauge may have shorter than normal operational life 3 6 Cleaning EGTx gauge frame and back panel is made of anodized aluminium and the front window is acrylic polycarbonate plastic Use only mild washing liquids for cleaning Use of alkaline or heavy solvents may cause permanent damage to the surfaces of the EGTx gauge Display window material is hard coated acrylic plastic with good resistance to scratching It however has no glass like surface and will be harmed if wiped with abrasive tools or cleaning fabrics 3 7 Zero point calibration EGTx gauge has zero point offset calibration trimmer located near the battery If for some reason the display value has drifted it can be readjusted back to accurate reading using this internal trimmer A good method for recalibration is to use correct thermocouple calibrator but reasonable results can be achieved using for example boiling water 100 C at sea level Please do not touch this trimmer if you are not familiar with thermocouple calibration 3 8 WARNING AND WARRANTY EGTx gauge has one 1 year warranty including racing use Warranty time will be calculated from the day of purchase Wire harness and sensor if supplied has no warranty because manufacturer have no way to know the correct assembly and operation of these Failure in
4. assembly and usage against sensible methods may remarkably shorten the useful life of these components Clear material and manufacturing defects in the components are naturally included in the warranty Failure of the sensor or gauge may cause severe problems if the display value of the EGTx gauge is the only method to analyse the behaviour of the engine Manufacturer strongly suggest to use all other methods spark plug colour AFR value etc to evaluate the quality of ignition and fuel mapping before making any tuning based only on EGT values Because the manufacturer of the EGTx gauge has no real method to affect the operations by the end user all failures in engines etc are in no responsibility of the EGTx gauge manufacturer EGTx gauge has no aviation authorities approvals Use of EGTx in aeroplanes is in sole responsibility of the end user QO 9X DESIGN PIILIx Design 2015 7
5. d problems Constant bending must be avoided To avoid electrical disturbances sensor cable must be located away from high current and high voltage cables like ignition and alternator cables The woven protection layer of the sensor cable conducts electrical current Please be careful when routing cable near battery or any other live circuits This same shield may in some cases cause harmful ground loop currents Sensor end of the shield is grounded to the sensor body If shield is touching vehicles body then this shield is parallel connected to the engine grounding cable and it can conduct high currents especially when starting the engine Rubber grommets and shrink tubes are good for insulation purposes 2 2 Gauge assembly Gauge can be fixed to the wanted position by 2 sided tape or by supplied special fixing 3M Dual Lock tape To enable battery changing very rugged fixing is not preferred If needed small holes can be drilled to the back panel of the gauge Please make sure not to short circuit battery and also take care to retain enclosure sealing against water after modification In high vibration use like in RR motorcycles it is a good practice to use foamy rubber or plastic for fixing This will dampen the unwanted vibrations to acceptable level QO 9X DESIGN PIILIx Design 2015 4 3 USER MANUAL 3 1 ON OFF operations Gauge can be switched on by shortly pressing upper button As an indication for this a 888
6. e measurement accuracy can be lost Due to the battery chemistry this warning may sometimes come prematurely when gauge is used in extreme cold temperatures After heating the gauge the operation will revert to a normal Because of this known phenomena it is advised to use back and warning light sparingly in cold climates Battery inside EGTx gauge is 3V lithium type CR2450N It is widely available from battery shops Please note the lithium batteries are listed dangerous in air transportation Because of these limits the manufacturer of this EGTx gauge PIILIx Design cannot sell batteries other than the one supplied within the gauge Battery is located behind the back panel inside the gauge To change battery you must remove back panel To remove back panel unscrew all four Torx screws size of the correct tool is T10 Back panel seal may be stick to the gauge frame but the panel can be easily removed by the help of chisel type screwdriver etc Removing and reassembling the battery is best to proceed as seen on Pictures 1 2 When reassembling back panel please make sure seal is correctly seated and do not overtighten the screws Frame is made of aluminium and threads can t stand extreme torquing the screws REMOVING THE BATTERY Picture 2 Removing the battery QO 9X DESIGN Picture 3 Battery reassembly PIILIx Design 2015 6 NOTE WHEN CHANGING BATTERY PLEASE TAKE CARE NOT TO TOUCH ANY INTERNAL CIRCUITS WITH THE BATTE
7. er and continue again from 0 C When suitable value is displayed button pressing must be stopped and warning limit will be automatically saved to the value last seen on the display After this the gauge will return to a normal operation within a couple of seconds NOTE Lower button has been designed to register one long pressing only If lifted temporarily and then pressed again the operation will not resume to the point where last operation happened Warning light consumes a lot of current To maximise battery life it is a good practice to adjust warning light to flash only when really necessary 3 4 Using of backlight Backlight can be switched ON and OFF using upper button When gauge is on you can turn backlight ON and OFF by shortly pressing upper button State of the backlight toggles with every short pressing of the button After every pressing display shows the status of the backlight 888 Backlight ON 000 Backlight OFF Default state of the backlight after turning the gauge on is OFF After turning on the gauge display shows 888 in this operational phase this means Gauge ON not Backlight ON LUX DESIGN Backlight consumes a lot of current To maximise battery life use backlight sparingly PIILIx Design 2015 5 3 5 Changing the battery Low battery warning is indicated by blinking the display With this warning on you can still use the gauge but after some time the reliability of th
8. ional temperature range Protection class of the meter Material of the case Window material Cold point compensation operational range Accuracy of the cold point compensation Dimensions no cable width x height x depth PIILIx Design 2015 3 thermometer It is designed for use with any K type thermocouple sensor K type Insulated Inconel 600 50 1100 C 50 700 C 50 220 C 0 999 C 4 C 8 bit 7 C 0 7mA CR2450N 3V Lithium approx 800h approx 200h approx 50h 10C 60 C IP55 splash proof Anodized aluminium 2mm acrylic plastic hard coated 10 60 C 5 C 61x41x27mm 2 ASSEMBLY 2 4 Sensor assembly Sensor should preferably be assembled by TIG welding or by brazing in 2T engines the weld nut to the exhaust pipe You must drill 6mm 1 4 hole for sensor compression fixing kit to the exhaust pipe Material of the weld nut is stainless steel AISI 304 The optimal place for the sensor in 2 stroke engine is something like 100 150mm from the piston edge A good practice is to locate the sensor after the point where fresh inlet air oscillates during exhaust phase This can be normally seen from the colour of the exhaust pipe inner surface In 4 stroke engine suitable place for sensor is at the very beginning of the exhaust pipe In turbocharged engine sensor can be located before or after the turbine Sensor cable must be fixed with zip ties etc in order to avoid vibration relate
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