Kane 450 combustion flue gas analyser user manual
Contents
1. 600 C 32 1112 F 20 Pa 100 Pa 2000 Pa 80 hPa 0 21 0 2000ppm nom 4000ppm max for 15 minutes 0 10 000ppm 0 to 100 ppm 0 30 0 99 9 0 250 Pre programmed Fuels Natural gas Light Oil Propane Butane LPG Wood Pellets KANE450 manual Page 26 Dimensions Weight 0 77kg 2 2lb handset with boot Handset 200mm 7 9 x 45mm 1 8 x 90mm 3 5 Probe L300mm 11 8 x Dia 6mm 0 25 with 200mm 7 8 long stainless steel shaft type K thermocouple and 3m 6ft long neoprene hose Ambient Operating Range 0 C to 40 C 32 104 F 10 to 90 RH non condensing Storage Capacity LOG 255 sets of test results in volatile memory REPORT sets of each report in volatile memory Battery Life 4 AA cells gt 12 hours using Alkaline AA cells AC battery charger Input 110Vac 220 Vac nominal optional Output 10 Vac off load Using dry gases at STP Calculated KANE450 manual Page 27 12 ELECTROMAGNETIC COMPATIBILITY European Council Directive 89 336 EEC requires electronic equipment not to generate electromagnetic disturbances exceeding defined levels and have adequate immunity levels for normal operation Specific standards applicable to this analyser are stated below As there are electrical products in use pre dating this Directive they may emit excess electromagnetic radiation levels and occasionally it may be appropriate to check the analyser before use by Use t2. SERVICE password protected KANE450 manual Page 12 SETUP SET FUEL NATU GAS set fuel type L OIL PROPANE BUTANE L P G PELLETS N lt C gt G N Nett C Condensing G Gross efficiency calculation SET TIME XX yy ZZ set time values HH MM SS SET DATE DD MM YY choose date format then set date MM DD YY values YY MM DD C lt gt F C centigrade F fahrenheit PPM lt gt MG ppm parts per million MG M3 milligrams per cubic metre 02 REF No YES set reference value LANGUAGE English set language French Italian German Spanish Dutch Swedish KANE450 manual Page 13 PRESSURE SMOOTH OFF select smoothing ON POINTS LOW select decimal point resolution HIGH PS UNITS mBAR select pressure units mmH20 Pa kPa PSI mmHg hPa inH20 STORE up to 255 sets of combustion test results can be stored VIEW TEST xxx enter test number to be viewed then use rotor to select display If less than 9 set of readings are stored rotate the dial then use the up down buttons to change the LOG number AUTO STO YES NO if YES set logging time interval in minutes DEL ALL YES NO clears stored values REPORT There are dedicated report formats for the following tests Pressure UK tightness testing Temperature Room CO DRAUGHT All report menus follow the format TEST VIEW DEL ALL The TEST functions are described l
3. from the measured oxygen and type of fuel used Displays reading during a combustion test O gt is displayed while in fresh air Losses calculated from Oxygen and type of fuel Displays reading during a combustion test O gt is displayed while in fresh air KANE450 manual Page 29 BAT DATE TIME Displays the Battery power available in When the LO BAT symbol appears this indicates the batteries are at less than 10 of charge and should be replaced readings may be affected 1f used with low power batteries Warning all stored readings are lost when the batteries are removed or become exhausted Date shown as day month and year The order can be changed using the menu function Date is recorded when each combustion test is printed The time is shown in hours and minutes expressed in Military time or the 24hr clock Time is recorded when each combustion test is printed Note When changing the batteries on the instrument the memory will store the date and time for up to one minute if outside this time it may be necessary to re enter the details Date and time may also need to be reset if re chargeable batteries are allowed to totally discharge SYMBOLS used on the display P R lambda AMB loss triangle delta T TF eff symbol H PO 0 gt OC Poison Index measured CO divided by calculated multiplied by 100 CO CO Ratio measured CO divided by calculated Excess Ai
4. measured by the flue gas probe in Centigrade or Fahrenheit It displays OC if the flue probe is disconnected Nett temperature calculated by deducting the AMBIENT or INLET temperature from the measured FLUE temperature Displays in either Fahrenheit F or Centigrade C or and will display OC if the flue probe is not connected Temperature measured by the inlet temperature probe in Centigrade or Fahrenheit It displays OC if the flue probe is disconnected Carbon Monoxide reading displayed in ppm parts per million gt is displayed if there is a fault with the CO sensor or the instrument has not set to zero correctly switch off instrument and try again Carbon Monoxide displayed in mg m Carbon Monoxide in ppm normalised to the O2R value Carbon Monoxide in mg m3 normalised to the O2R value Carbon Monoxide calculation as if there were 0 Oxygen present This is only displayed in ppm Carbon Dioxide calculation determined by fuel type This is only displayed when a combustion test is being carried out O gt is displayed while in fresh air Combustion efficiency calculation displayed in percentage either as Gross G or Nett N or Condensing Nett Use MENU to change The calculation is determined by fuel type and uses the calculation in British Standard BS845 The efficiency is displayed during a combustion test O gt is displayed while in fresh air Excess air calculated
5. on top of the analyser KANE450 manual Page 6 Backlight Press and hold Ofk to toggle the display s backlight Note use of the backlight increase the current drain on the batteries Tasklight Comes on in conjunction with the display s backlight see above Switching The analyser normally operates with the pump on Press PUMP quickly PUMP on off to switch the pump off and on When the pump is switched off the analyser displays PUMP OFF approx every 30 seconds NOTE the pump will not switch off if the CO reading is above 20ppm This helps to protect the CO sensor from damage NOTE the pump cannot be switched off with the rotor set to Zeroing the pressure sensor Press and hold the PUMP key until the top line display shows ZERO CAL Freezing the display Press and hold the HOLD ENTER key until a second beep is heard to freeze all readings The display flashes and readings can be printed by pressing PRINT key Press and hold the HOLD ENTER key again until a second beep is heard to go back to live measurements The HOLD function is inhibited when the display LEDs are flashing Storing a set of Press and hold the HOLD ENTER key for approx 4 seconds readings Note this STORE function is inhibited if the display LEDs are flashing Note this STORE function is inhibited in normal operation if the pump is switched off Changing the Press and release the HOLD ENTER key unt
6. Although sensor life is typically more than two years the analyser should be re calibrated and serviced annually to stop any long term sensor or electronics drift or accidental damage Local regulations may require more frequent re calibration In the UK Kane International has service facilities at Atherton near Manchester Tel 01942 873434 the primary service centre for UK customers and at Welwyn Garden City in Hertfordshire Tel 01707 375550 the primary service centre for non UK customers By sending you analyser back to Kane for an annual fixed price service Check www kane co uk for details you have the opportunity to extend the warranty on your analyser to 5 years KANE450 manual Page 25 11 ANALYSER SPECIFICATION NOTE MAY BE SUBJECT TO CHANGE Temp Measurement Flue Temperature 1 0 C F Inlet Temperature 1 C F Temp Nett 1 0 Pressure Measurement 1 Pa 0 01 hPa Gas Measurement Oxygen Carbon Monoxide KANE450CO KANE450COH Nitric Oxide NO Carbon Dioxide Efficiency Excess Air 2 0 5 F 0 3 reading 1 C F 0 3 reading 2 C 5 F 0 3 reading 0 5 Pa 3 Pa 3 of reading 3 of reading 02 10ppm lt 1 00 5 of reading 20ppm lt 400ppm 5 lt 5000 10 gt 5000ppm 2ppm lt 30ppm 5 ppm gt 30ppm 0 3 reading 1 0 reading 0 2 0 600 C 32 1112 F 0 100 C 32 212 F 0
7. KANE450 Flue Gas Analyser Kane International Ltd Kane House Swallowfield Welwyn Garden City Hertfordshire AL7 1JG Tel 44 0 1707 375550 Fax 44 0 1707 393277 E mail sales kane co uk www kane co uk Stock No 18221 5 January 2007 Kane International Ltd benchmark The code of practice for the installation commissioning amp servicing of gas fires and wall heaters CONTENTS Page No KANE450 USER GUIDE 3 1 BEFORE USING THE ANALYSER FOR THE FIRST TIME 4 2 BEFORE USING THE ANLYSER EVERY TIME 5 3 USING THE ANALYSER AND ITS FOUR BUTTONS 6 7 4 USING THE KANE450 AS A THERMOMETER OR PRESSURE METER 8 5 USING THE ROTARY DIAL STARTING FROM MENU 9 6 MAIN MENU FUNCTIONS 12 7 MEASURING MODES 16 22 MEASURING FLUE GASES 16 STANDARD COMBUSTION PRINTOUT 17 STORING A DRAUGHT MEASUREMENT TO PRINT WITH A COMBUSTION TEST 18 MEASURING PRESSURE 19 MEASURING TEMPERATURE 20 MEASURING AMBIENT AIR ROOM CO 21 MEASURING FLUE DRAUGHT 22 8 WHEN YOU FINISH A COMBUSTION TEST 23 9 ANALYSER PROBLEM SOLVING 24 10 ANALYSER ANNUAL RECALIBRATION AND SERVICE 25 11 12 ANALYSER SPECIFICATION NOTE MAY BE SUBJECT TO CHANGE 26 27 ELECTROMAGNETIC COMPATIBILITY 28 APPENDIX 1 MAIN PARAMETERS 29 30 KANE450 manual Page 2 KANE450 User Guide The KANE450 Combustion Analyser measures O differential temperature differential pressure and CO It calculates efficiency Nett Gro
8. ater KANE450 manual Page 14 SCREEN CONTRAST SET xx lighten or darken the display AUX Selected Fuel assign the AUX rotor position Pressure units COM Date CO air free Reference value HEADER Header 1 2 lines each of 20 characters Header 2 KANE450 manual Page 15 7 MEASURING MODES MEASURING FLUE GASES After the countdown is finished and the analyser is correctly set up put its flue probe into the appliance s sampling point The ideal sampling point is at least two flue diameters downstream of any bend Put the probe tip in the flue center With balanced flues make sure the probe is positioned far enough into the flue so no air can back flush into the probe Use the probe s depth stop cone to fix it in flue diameters from 4 to s inch 6 to 21 mm Its maximum operating temperature is 1112 F 600 C Make sure you do not exceed the analyser s operating specifications In particular Do not exceed the flue probe s maximum temperature Do not exceed the analyser s internal temperature operating range Do not put the analyser on a hot surface Do not exceed the water trap s levels Do not let the analyser s particle filter become dirty and blocked View the displayed data to ensure that stable operating conditions have been achieved and the readings are within the expected range Press PRINT or press HOLD first to freeze or store the rea
9. d to be replaced or recalibrated by an authorized repair center If the inlet probe is connected to the analyser during its countdown the measured temperature from the inlet probe will be used as the inlet temperature If the inlet probe is not connected and you connect the flue probe s temperature plug to the analyser during countdown the measured temperature from the flue probe will be used as the inlet temperature If neither probe is connected during countdown the analyser s internal ambient temperature will be used as the inlet temperature Switching OFF the Analyser Press y button to switch the analyser OFF The display counts down from 30 with the pump on to clean the sensors with fresh air If the probe is still connected make sure analyser and probe are in fresh air Press HOLD ENTER if you want to stop the countdown and return to making measurements Note the analyser will not switch off until the CO reading is below 20ppm Using UP DOWN ENTER Buttons Use the UP DOWN ENTER keys to change settings such as time date and fuel when the rotary dial is turned to MENU Printing Data Press and quickly release the key to start the analyser printing The analyser displays PRINTING until this is completed Press and release the key again to abort printing Make sure the printer is switched on ready to accept data and its infrared receiver is in line with the analyser s emitter
10. dings before printing KANE450 manual Page 16 STANDARD COMBUSTION PRINTOUT K450 Serial No 1 0 product code 123456789 Kane s serial number sales kane co uk user header 1 KANE INTERNATIONAL user header 2 DATE TIME INLT C NETT C EFF PRS mbar Losses XAIR CO CO2 PI O2 ref 12 12 05 09 53 23 NATU GAS 5 1 9 0 n f NO sensor not fitted condensing efficiency KANE450 manual Page 17 STORING A DRAUGHT MEASUREMENT TO PRINT WITH A COMBUSTION TEST Rather than print a draught test report and then a combustion test report it is possible to combine the two sets of results on one printout by taking a draught reading first and storing it for printing later The following sequence must be followed With PRESSURE on the top line and with the rotor pointing to Prs and with the pump off then if LOG is activated the current pressure reading will be stored in the draught register with its current scaling All the conditions must be met and no other values will be logged As this occurs the top line display briefly shows DRAUGHT Whilst the instrument is in this mode activating LOG again will overwrite the stored reading The stored reading is cleared whenever the analyser is switched off or by entering any REPORT menu Resuming normal operation adds the stored DRAUGHT reading to any combustion printout or any combustion log In such cases the printout changes so instead of PRS bei
11. he normal start up sequence in the location where the analyser will be used Switch on all localized electrical equipment capable of causing interference Check all readings are as expected A level of disturbance is acceptable If not acceptable adjust the analyser s position to minimize interference or switch off if possible the offending equipment during your test At the time of writing this manual August 2005 Kane International Ltd are not aware of any field based situation where such interference has occurred and this advice is only given to satisfy the requirements of the Directive This product has been tested for compliance with the following generic standards EN 61000 6 3 EN 61000 6 1 and is certified to be compliant Specification EC EMC KI K450 details the specific test configuration performance and conditions of use Please Note Batteries used in this instrument should be disposed of in accordance with current legislation and local guidelines At the end of the product s life it should be re cycled in accordance with current legislation and local guidelines KANE450 manual Page 28 Appendix 1 Main Parameter Here are the legends used and what they mean O O2R T Flue T Nett T inlet CO COm COn COH COa CO X AIR Loss Oxygen reading in percentage Oxygen reference setting means switched off or set to 0 Temperature
12. ial changes the LED indicated display line and selects access to the menu to make changes to the date time fuel etc KANE450 manual Page 3 1 BEFORE USING THE ANALYSER FOR THE FIRST TIME Turn over the analyser remove its protective rubber sleeve and fit 4 AA batteries in the battery compartment Take great care to ensure they are fitted with the correct battery polarity Then replace the battery cover and protective rubber sleeve Always check that the analyser is working correctly after replacing batteries Set the analyser s correct time date fuel source etc after it is switched on and calibrated See USING THE ROTARY DIAL below These settings are stored when the analyser is switched off Using Re Chargeable Batteries This analyser has been designed for use with both alkaline and rechargeable Nickel Metal Hydride NMiH No other battery types are recommended WARNING The battery charger unit must only be used when NMiH batteries are fitted batteries are entirely suitable for top up charging at any time even for shorts periods Alkaline batteries are not re chargeable Attempting to recharge Alkaline batteries may result in damage to the product and may create a fire risk Ensure the batteries are fitted in the correct manner Charger Ensure that you use the correct charger The part number is KMCU450 UK An in vehicle adapter can be used to top up the analyser s batteries from a 12 volt vehic
13. il the illuminated LEDs point display s active line at the display line that you wish to change While the LEDs are flashing turn the rotary dial to display the parameter that you want If the rotor is not turned the active line will go back to its previous setting after approx 5 secs KANE450 manual Page 7 4 USING THE KANE450 AS A THERMOMETER OR PRESSURE METER With the KANE450 switched off press and hold down the HOLD button and then press and release the ON OFF button then release the HOLD button The KANE450 will now operate as a fixed display pressure meter thermometer with the pump off and inhibited The display will show pressure flue temp inlet temp differential temp The rotor display indications will now be locked apart from MENU Readings can be held and logged in the normal way Up to 8 sets of readings can be logged Exit this mode by switching the KANE450 off The standard printout for this mode is as follows K450 1 0 Serial No 123456789 sales kane co uk KANE INTERNATIONAL DATE 12 12 05 TIME 09 53 23 PRS mbar 2 KANE450 manual Page 8 5 USING THE ROTARY DIAL starting from Menu Rotating the dial selects the displayed parameter unless MENU is selected or the pressure temperature mode has been selected ROTARY DIAL POSITIONS MENU switches to MENU function BAT Displays estimated battery life If battery voltage falls below a
14. ing flow and return temperatures or for setting up hot water temperature flow on a combi boiler Standard Temperature Report this mode is accessed via the MENU function K450 1 0 Serial No 123456789 sales kane co uk KANE INTERNATIONAL TIME 10 15 20 03 06 C 54 1 E 24 1 KANE450 manual Page 20 MEASURING AMBIENT AIR ROOM CO The analyser s CO sensor can be used to detected spillage from appliances A standard spillage test can be conducted where the analyser automatically records 16 sets of 1 minute samples and prints the results as below Standard Room CO Report this mode is accessed via the MENU function K450 1 0 Serial No 123456789 sales kane co uk KANE INTERNATIONAL TIME 16 58 12 12 05 EST KANE450 manual Page 21 MEASURING FLUE DRAUGHT STANDARD DRAUGHT REPORT K450 1 0 Serial No 123456789 sales kane co uk KANE INTERNATIONAL KANE450 manual Page 22 8 WHEN YOU FINISH A COMBUSTION TEST Remove its probe from the flue THE PROBE WILL BE HOT and let it cool Do not put the probe in water which will be sucked into the analyser damaging its pump and sensors When the analyser s readings return to ambient levels switch it off The analyser counts down from 30 before switch off with the pump running to self clean its sensors KANE450 manual Page 23 9 ANALYSER PROBLEM SOLVING If any problems are not solved with these solutions contact us or an authorized repair ce
15. le battery The part number is KMCU450 12 Trickle Charging on first charging charge for at least 12 hours continuously subsequently charge overnight for approx 8 hours Fast Charging With the analyser switched on connect the charger and then switch the analyser off The display will then show BATTERY CHARGING Battery Disposal Always dispose of depleted batteries using approved disposal methods that protect the environment KANE450 manual Page 4 2 BEFORE USING THE ANALYSER EVERY TIME Check the water trap is empty and the particle filter is not dirty To empty water trap unplug its rubber stopper and re plug once it is empty To change the filter remove protective rubber sleeve pull out the water trap unit from the analyser remove the water trap s particle filter from its spigot and replace Reconnect the water trap and rubber protective sleeve Connect the flue probe into the bottom of the analyser s water trap and connect the probe s temperature plug to the socket next to the water trap check the plug s orientation is correct otherwise incorrect temperature measurements will occur After switch on check fuel source date and time are correct and battery power is sufficient SAFETY WARNING This analyser extracts combustion gases that may be toxic in relatively low concentrations These gases are exhausted from the back of the instrument This analyser must only be used in well ventilated locations by
16. ng printed DRGT is printed instead NOTE whenever there is a stored DRAUGHT reading the current pressure reading is ignored and the stored reading is always used WARNING This means that if a user stores a draught reading from one appliance and goes to another appliance without switching off or re entering the reports menu his printouts and logs will show the last stored draught reading and its scaling KANE450 manual Page 18 MEASURING PRESSURE The analyser can be used to measure pressure by connecting tubing to the appropriate ports Standard Pressure Report this mode is accessed via the MENU function This mode allows a tightness test to be carried out automatically The times for the test can be set by the user From the start of the test the analyser waits 60 secs to allow temperature stabilisation then records and displays the pressure reading at the start ofa 120 second countdown The live pressure reading is displayed during the 120 second countdown and then locked at the end of the countdown The display then shows start pressure and finish pressure The summary results can then be printed as below Pressure Test Printout K450 1 0 Serial No 123456789 sales kane co uk KANE INTERNATIONAL TIME 14 58 12 12 05 PRS_1 mbar 20 110 PRS_2 mbar 19 998 Duration mins 2 00 KANE450 manual Page 19 MEASURING TEMPERATURE The analyser can be used as a normal single input or differential thermometer ideal for measur
17. nter Causes Solutions e Air leaking into probe tubing water trap connectors Fault symptom e Oxygen too high too low Oxygen reading CO reading Batteries not holding charge Analyser not running on mains adapter Analyser does not respond to flue gas Net temperature or Efficiency calculation incorrect Flue temperature readings erratic or internal to analyser Oxygen cell needs replacing Analyser was stored in a cold environment and is not at normal working temperature Oxygen cell or CO sensor needs replacing Pump is switched off Batteries exhausted AC charger not giving correct output Fuse blown in charger plug Particle filter blocked Probe or tubing blocked Pump not working or damaged with contaminants Ambient temperature set wrong during Automatic Calibration Temperature plug reversed in socket Faulty connection or break in cable or plug e flue or nett displays e X Air EFF COa or CO2 display Oxygen reading is above 18 C e Analyser just continually beeps e Turn dial back to MENU and press ENTER e BAT only shows 65 with fully charged NiMh batteries fitted KANE450 manual e This is not a problem and is to be expected as NiMh batteries only deliver 1 25 V per cell whereas Alkalines deliver 1 5 V per cell Fresh alakalines might give a BAT value of 80 or so Page 24 10 ANALYSER ANNUAL RECALIBRATION AND SERVICE
18. pre set limit the display flashes LOW BAT every 10 seconds See above to change the batteries or re charge if applicable TIME Displays Time LOSS Displays calculated losses when O values are less than 18 CO CO ratio Measured CO divided by calculated CO when O values are less than 18 Displays calculated Carbon Dioxide values once values are below 18 O Displays Oxygen values in T inlet Displays the inlet probe temperature T Flue Displays flue probe temperature If the flue probe s temperature sensor is broken or open circuit it displays OC KANE450 manual Page 9 T Nett Displays the difference between flue and inlet ambient temperatures If the flue probe s temperature sensor is broken or open circuit it displays OC CO Displays Carbon Monoxide values in PPM as CO in ppm normalized ac COn Display value in mg m as COm in mg m3 normalised as COH NO Displays Nitric Oxide values in PPM as NO if fitted in ppm normalized as NOn Display value in mg m as NOm in mg m3 normalised as NOH PRS Display the measured pressure or draft value in user selected units X AIR Displays calculated excess air when values are less than 18 EFF Displays calculated efficiency when O values are less than 18 EFFn EFFg or EFFc as selected by the user AUX addition user selectable displays Rotate the dial to MENU and use the UP or DOWN buttons
19. r Either the internal temperature of the analyser or the inlet temperature as measured during the start up sequence Loss losses 100 minus efficiency Nett Temperature Flue Temperature Efficiency mg m normalised pump off oxygen greater than 18 so calculation is disabled open circuit temperature input KANE450 manual Page 30
20. ss or Condensing losses the CO CO ratio Poison Index excess air and CO air free in ppm only The analyser can be upgraded with the addition of a Nitric Oxide sensor either on initial purchase Order Code KANE450N or as a retrofit as part of an annual service procedure In addition the KANE450 Combustion Analyser s CO sensor checks carbon monoxide levels in ambient air useful when a CO Alarm is triggered and tests the safety of appliances The CO and NO readings can be referenced to the oxygen reading in ppm or 3 mg m All analysers have a protective rubber sleeve with a magnet for hands free operation and their flue probes work on all combustion appliances and take ambient air measurements The large display shows 4 readings at a time and all data can be printed via an optional infrared printer The printed data can be live data frozen data or stored data 255 sets of tests can be stored Note stored data is lost if the batteries are removed or are exhausted Two lines of 16 characters can be added to the header of printouts The analysers are controlled using 4 buttons and a rotary dial The four buttons from left to right switch on and off the analyser print actual or frozen data switch on and off the backlight switch on and off the pump and freeze hold data The buttons with UP DOWN and ENTER arrows also change settings such as date time fuel source etc when in MENU mode The rotary d
21. to select the following function for change When you have selected the function to change press ENTER to select Repeat this to scroll through the menu and select using the ENTER key and change using the UP DOWN keys the function The final logical ENTER returns you to the main menu display To exit the Menu function you can normally rotate the dial to another position Unless the final logical ENTER is pressed no changes are made KANE450 manual Page 10 The exception is STORE DELETE where the ENTER key must be pressed to confirm the change and exit If you rotate the dial before pressing ENTER the instrument will beep continuously You must rotate the dial back to MENU and press ENTER before you can continue In STORE View mode the rotary dial is used to select the saved parameter to be displayed Use the UP DOWN keys to change the Test number To exit the View mode press ENTER KANE450 manual Page 11 6 MAIN MENU FUNCTIONS There are six menu headings each with its own sub menu SETUP fuel selection efficiency calculation time and date setting temperature unit gas units oxygen referencing language exit PRESSURE Smoothing resolve number of decimal points resolution number of decimal points resolution units time exit STORE view auto store delete exit REPORTS pressure temperature room CO draught exit SCREEN contrast auxiliary display header exit
22. trained and competent persons after due consideration of all the potential hazards Sensor manufacturers recommend users of portable gas detectors containing electrochemical sensors conduct a bump check before relying on the unit to verify an atmosphere is free from hazard A bump test is a means of verifying that an instrument is working within acceptable limits by briefly exposing to a known gas mixture formulated to change the output of all the sensors present This is different from a calibration where the instrument is also exposed to a known gas mixture but is allowed to settle to a steady figure and the reading adjusted to the stated gas concentration of the test gas For Oxygen monitors a level of confidence that the unit is working adequately may be gained by exhaling over the sensor inlet and viewing the reduction in reading obtained KANE450 manual Page 5 3 USING THE ANALYSER AND ITS FOUR BUTTONS Switching ON the Analyser Press button to switch the unit ON in fresh air outside the property about to be tested This lets the analyser auto calibrate 115 sensors properly On switch on the analyser beeps four times and displays the fuel previously selected the date and time and model number Its bottom line counts down from 60 until the sensors are ready to use This normally takes 20 30 seconds but may take longer as sensors get older If the analyser will not auto calibrate its sensors nee
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