Oxygen Meter User Manual
Contents
1. This adjusts amplifier gain of temperature sensor out voltage so that the gain is 10 00 This gain is already adjusted at shipment lt H ow to adjust VR1 gt Connect the temperature sensor measure the voltage V between J B1 2 and B1 3 and adjust VR1 such that the temperature display is 100 times the measured voltage O 18 19 eg When the voltage V between J B1 2 and J B1 3 is 0 25 V adjust VR1 such that the temperature is 25 C e Variable resister VR2 This adjusts amplifier gain of sensor out voltage For the oxygen sensor this gain is already adjusted at shipment O 19 1902. 19 Zero Point Calibration Short input terminals from Oxygen sensor click Start button Sensor Out mV Hereafter sensor output voltage will be compensated by this value This calibration is required only one time after when DC voltage measurement circuit is connected to the PC 3 5 Gas calibration Sensor out voltage from pure atmosphere of gas concentration 20 9 is used for gas oxygen concentration calibration When the Gas calibration menu is clicked the following window will be opened w Gas Calibration Sensor Out mv Oxygen 940 50 20 90 Set oxygen sensor in pure atmosphere click the start button Sensor output voltage is measured 10 times and average value is automatically saves as a gas calibration voltage 0 8 190 w Gas Calibration Sensor Out mv Oxygen 3408 00 20 90 Calibration Completed 3 6 Liq Calibration Saturated dissolved oxygen concentration in pure water depends on water temperature The relation between the saturated dissolved oxygen concentration and the temperature is measured and booked Thetemperature and the sensor out voltage from oxygen saturated dissolved pure water are used for dissolved oxygen concentration calibration 3 6 1 Liq calibration at the temperature measurement enabled Both the temperature and the oxygen concentration are measured at the same time When the Lig calibration menu is clicked the following window will be opened wm Liqu
3. after measurement completion Voice Out When checked the measured value is spoken by PC speaker Sampling interval and count sampling interval and count selections from this combo o 6 190 boxes Sensor out mV Sensor output voltage from the DC Voltage measurement circuit Oxygen Oxygen concentration This is converted value from the above sensor out voltage Temp C Temperature This is converted value from the temperature sensor our voltage Lower text boxes Displays sampling interval sampled count measured oxygen concentration and temperature Graphic window Displays graphically the measured oxygen concentration and temperature Gas start Starts oxygen concentration measurement in gas Liq start Starts dissolved oxygen concentration measurement in liquid Stop Stops measurement Exit Exits from this program Copy Copies the measured data to a Window clip board Excel Displays the measured data in Excel File Files the measured data into a file 3 4 Zero Point calibration This calibrates offset voltage from Oxygen sensor When the Zero Point calibration menu is clicked the following window will be opened m Zero Point Calibration Short input terminals from Oxygen sensor click Start button Gilar Sensor Out mv Short input terminals from oxygen sensor and click the start button Sensor output voltage is measured 10 times and average value is saves as an offset calibration voltage O 7
4. 4 3 ga 5 3 gaz 30 4 5 aad 7 l gap a asal ag 3 a 8 48 10 a aasal js 3 11 10 8 48 a Alle 12 if 444 10 13 12 a4 14 13 aaa 5 15 14 ara 16 15 ga Y 17 16 gaa o 20 309 TP 80 16 17 15 i 20 19 8 47 26 55 21 20 8 44 26 55 ap H 8 44 26 55 3 9 Data transfer to Excel etc Lower text boxes display measured oxygen concentration and temperature Excel button displays the measured data in Excel Copy button copies the measured data into Window clip board The clip board data can be pasted in Excel File button files the measured data in a file 3 10 Changing language Clicking J apbanese menu changes language to J apanese Clicking English menu changes language to English O 14 190 MENE SST RBA Bt oa See Be Enel comi ME eeth EEH r arae SEIE sus am E os Bu eytt MAD mt RRREm O 304 aec 2695 7 Himal 4 Restrictions 1 One PC can use only this one oxygen meter 2 When Excel is used Excel license from Microsoft is required 3 Temperature sensor is LM 35DZ from the National Semiconductor This works from 0 C to 50 C 4 In this version the Text to Speech engine can not work for English language 5 Notes for Operation 1 Temperature sensor is water resistant Use the temperature sensor at the temperature range from 10 C to 60 C Usage outside this range will damage the sensor 2 When you insert or remove the USB cable handle the USB cab
5. Oxygen Meter User Manual Monday J uly 23 2007 Ds AQUINO ana a Se anceut oli cines as id e 2 De PROGKAM NM ebctsct 2s A A A E 3 2 1 Environment for program execution ooooocccinnoccccnonocccncnnanncncnnanoncnncnnn cnn rnnnn nn nnnnnnss 3 225 OSM A de 3 PAE R OESO a EAA E E T AA A there oe 3 2 4 USB driver installation Aai a a a aa a a ie 3 2 5 Text to Speech ENQiNB oooccccococcccnononncnonnannnnoncanoncnnnnnonnnnonan a aie aaan IAEN aa e aaa 3 NS 4 A A er lo A E AAAA 4 3 27 JEXOCUEION O A O 4 3 3 Ma WIMGOW heinean a aii ras 5 34 Zao Pont CADENA Aa A EEE ALAREN aRt 7 A Sl A AE T AA T ETA 8 310 UG Calibration aa a A E A Ea 9 3 6 1 Liq calibration at the temperature measurement enabled cccccscceeeees 9 3 6 2 Liq calibration at the temperature measurement disabled 10 A CT eE AA E A A EAT 11 3 8 TLS A E nu aaa A AA Eaa 13 3 9 Data transfer to Excel iii aria rra Oia dan 14 310 Changing langue Ri RR ee ates 14 e ROSE Sii A A A A T ISA 15 Ds NOLES Or Opera Oia ias 15 RA dad 16 Appendix 1 DC Voltage Measurement Cir Cllit ococooniccocinoconccccnnonnncnnanonnnnonnnn cnn cnnar nn nnrnnnnr 17 O 1 19 1 Outline This is an educational oxygen meter to understand oxygen concentration in gas or liquid This measures oxygen concentration and temperature and then displays them in a graph Following shows the measurement system USB Cabla Oxygen A Temperature C Temperature Sens
6. asured data graphically When Excel out flag is checked the measured data is displayed by Excel after measurement completion Q 11 190 BB trym Heber Dep Port Calan Gan Calibration Lipad calbeaton Setting Hap Jar Ergi COM Fert COM3 gt Excel Gut TF Voice Out T Lig Start Gas Start Sampling hieral lis me Count 50 Sensor Gut mv 7 00 Oxygen H 0 59 Temp c ot de E E T i TE i T i T i F f DE A A A e ETT A IET T o a nl a 4 i 3 2 4 3 5 4 4 5 7 La a 7 3 E 10 E 11 10 12 11 13 12 14 13 15 14 16 15 17 16 18 17 f 15 18 1 28 27 20 15 1 2 2T 21 20 117 2T 22 21 11 27 23 22 1 08 27 Q 12 190 3 8 Liq Start This starts dissolved oxygen concentration measurement Select sampling interval and count and click the Liq start button When the measurement is for dissolved oxygen the back ground colors of data are blue Lower text boxes display measured dissolved oxygen concentration and temperature Lower picture window displays the measured data graphically When Excel out flag is checked the measured data is displayed by Excel after measurement completion Oxygen Heber Teo Font Calbra on Gea Cslbraion Lied caleston Selig Help uagenese Eng comPet M Exceso r veiesOut F Liq Start Gas Start Samelirg herve E Court BO Sensor Qut rn 1255 00 _ ster conn EE toc o E ao 0 E f I st O0 13 190 1 Es L Y 3 2 42 27
7. id calibration La Temp O ISD Start Sensor Out mV Oxygen mg L o 9 190 Set oxygen sensor and temperature sensor in pure water click the start button Oxygen sensor output voltage and temperature are measured 10 times and average values are calculated The temperature and the saturated oxygen sensor out voltage for the temperature are automatically saved as dissolved oxygen calibration values Liquid calibration La Temo pS Sensor Out mv Oxygen mg L 3 6 2 Liq calibration at the temperature measurement disabled The temperature is measured by another sensor When the Lig calibration menu is clicked the following window will be opened Liquid calibration ia Temp O RST Start Sensor Out mv Oxygen mg L E As Key in the temperature value and set oxygen sensor in pure water click the start button Oxygen sensor output voltage is measured 10 times and average values are calculated The temperature and the saturated oxygen sensor out voltage for the O 10 190 temperature are automatically saved as dissolved oxygen calibration values Liquid calibration La Temo HBOS Sensor Out mV Oxygen mg L EI a 3 7 Gas Start This starts gas oxygen concentration measurement Select sampling interval and count and click the Gas start button Lower text boxes display measured gas oxygen concentration and temperature Lower picture window displays the me
8. le at fixing the USB connector 3 To work with Text to Speech function the software must be installed completely and a speaker must be attached to the PC 4 To follow the Text to Speech function the sampling time must be greater than 3 seconds 0 15 190 References 1 Mitsuo Takahashi Trail and Experiment of Oxygen sensor Transistor Gijytsu J apanese 12 2003 O 16 190 Appendix 1 DC Voltage Measurement Circuit O 17 19 Hereafter shows adjustments and cable connections Most adjustments have been executed before shipment Usually adjustments are not needed for users e Terminal Block TB1 This has three terminals This connects temperature sensor TB1 1 VCC Red wire TB1 2 Temperature sensor out White wire TB1 3 GND Black wire e Terminal Block TB2 This has two terminals This connects oxygen sensor TB2 1 Oxygen sensor out Red wire TB2 2 GND Black wire e jumper Jl This selects temperature sensors J umper between J 1 1 and J 1 2 Internal temperature sensor Note Now internal temperature sensor is not implemented J umper between J 1 2 and J 1 3 External temperature sensor e Jumperj2 This selects mode of oxygen sensor out Jumper between J 1 1 and J 1 2 Oxygen sensor out is current Jumper between J 1 2 and J 1 3 Oxygen sensor out is voltage e Jumper J3 amp 4 This selects sensor types J umper J 3 Oxygen sensor Jumper J 4 Other sensor e Variable resister VR1
9. ng the USB cable 3 2 Execution Double click the program file XxxTmpM eter exe or its short cut icon Main windows will be opened O 4 19 3 3 Main window BB oryn Haber Dep Por Gaian Gan bean Lapid calbraton Salir Hap Japanese Eng COM Peet COM3 Excel Gut I Voie Out T Lig Start Sampling interval E Count Pro Sensor Out iimw Oxygen H Temp 0 Main window when the temperature measurement is enabled O 5 190 Ep trym Heter Dep Fimi Gaian Gan an Lapad calbeoton Salir Hap deae Ergi COME COM Pet LOMA Excel Out O VoiceQut T Lig Start Gas Start Sameling terval lsec Count 10 Sensor Out mv Oxygen 4 Main window when the temperature measurement is disabled Zero Point calibration Calibrates offset voltage of the DC Voltage measurement circuit for oxygen concentration measurement Gas Calibration Calibrates the oxygen concentration in gas Liquid calibration Calibrates the dissolved oxygen concentration in liquid Setting Enable or disable the temperature measurement function Help Displays version and how to use this software J apanese Changes language to J apanese English Changes language to English COM Port Displays assigned com port The DC Voltage measurement circuit has USB Serial conversion circuit in which the USB driver automatically assigns a COM port for the USB channel Excel Out When checked the software displays measured data in Excel
10. or Oxygen Personal Computer Sensor DG Voltage Messurerment Circuit The oxygen sensor is a Galvanic battery type sensor This sensor generates a DC voltage proportional to the oxygen concentration The temperature sensor is LM35DZ transistor type sensor from the National Semiconductor This generates a DC voltage proportional to the temperature The DC voltage measurement circuit amplifies the DC voltages from the both sensors converts to digital values and sends them to a Personal computer via USB cable The personal computer displays measured values and also speaks the values by a speaker Features of the Oxygen sensor 1 Low cost Easy reproducible 2 Students can easily construct this sensor by themselves 3 Electrode liquid used for sensor is safe for human 4 Measure both gas oxygen concentration and dissolved oxygen concentration Features of the Temperature sensor 1 It is waterproofed to measure liquid temperature 2 It is high precise by using semiconductor PN junction voltage O 2 190 Features of this measurement system 1 TheDC voltage measurement circuit does not require a DC Power supply since the DC power is supplied from the USB cable 2 Calibration is easy and automatic 3 Measured data is displayed in real time 4 Hasan Excel interface 6 Supports bi language 7 Measured values can be spoken from a PC speaker Program 2 1 Environment for program execution Windows XP WindowsVi
11. sta Runtime version of Visual Basic 6 0 Microsoft Text to Speech Engine Speaker 2 2 Installation Following are files for installation e setup exe e setup LST e XxxTmpMeterCAB Double click the setup exe and follow the procedure guided by the installation program 2 3 Un installation Uninstall the installed program from the Windows control panel 2 4 USB driver installation The DC voltage measurement circuit requires a special USB driver When the USB cable is attached to the PC the PC requires the USB driver installation The USB driver is saved in a supplied CD ROM Insert the CD ROM and install the USB driver by setting the searching path to the CD ROM When the USB driver is not installed completely the following message will be displayed Can not find USB COM Port 2 5 Text to Speech Engine Install the Text Speech Engine Those engine files can be downloaded from the next url page O 3 190 Microsoft Agent download page for end users http Awww microsoft com msagent downloads user asp 1 SAPI 4 0 runtime support Download the Microsoft SAPI 4 0a runtime binaries 824 KB exe File name Spchapi exe 2 Text to speech engines Download selected engine Lernout Hauspie ITS 3000 TTS engine J apanese 3MB exe File name Ihttpsjpj exe Downloaded files are already saved in the CD ROM You can install engines from those files 3 Operation 3 1 Preparation Connect the DC Voltage measurement circuit to the PC usi
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