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8. Calibrating CO/CO

2

 Sensor 

 

 

34 

8. Calibrating CO/CO

2

 Sensor 

When calibrating the IAQ Monitor on site, follow the instruction below. 

It is recommended to calibrate the IAQ Monitor’s CO/CO2 measurement every 2-3 months to ensure accurate readings. 

In addition, it is still recommended to send your IAQ monitor to KANOMAX for annual calibration. 

* It is recommended to exchange the CO sensor annually and it is a consumable. 

8.1 Preparation for Calibration 

Fully warm up the instrument (for about 20 minutes) before performing a calibration. 

Normally calibrate ZERO gas first then Span gas.   

(It is also acceptable if you calibrate either ZERO gas or Span gas.) 

 
 

                   

                     

       

                                                                                             
 
 
 

         

 

Valve 

Close 

       

Open

 

 
 
 

Turn to      Turn to 
the back    the front 

1. Confirm if the valve of the regulator is closed 

2. Attach the regulator to a ZERO gas cylinder. 

 

3. Connect the regulator to the calibration cap 

by using a tube. Connect them firmly in order 

to prevent the gas-leaking.

 

4. Put the calibration cap on the probe. Insert it 

firmly in order to prevent the gas-leaking.

 

Summary of Contents for 2212

Page 1: ... 1 Data Acquisition Software for Windows RS232C Cable 6000 02 1 Used to connect the instrument and PC Options Item Model Features ZERO Gas 2211 05 Zero Point Calibration for CO and CO2 CO Span Gas 2211 06 CO Span Calibration Approx 35ppm CO2 Span Gas 2211 07 CO2 Span Calibration Approx 1000ppm Gas Valve 2211 08 Valve for the gas cylinders listed above Spare Probe 2212 01 Spare Probe Analog Output ...

Page 2: ... Measuring MAX AVG and MIN Value CALUCULATION MODE 11 5 Measuring Percent Outdoor Air OA MODE 14 6 Data Output 18 6 1 Stored Data Item 18 6 2 To Redisplay Stored Data 18 6 3 Printing out Measurement Data 20 6 3 1 Preparation for Print Out 20 6 3 2 Printing from the NORMAL Measurement Mode 20 6 3 3 Printing from CALCULATION mode 21 6 3 4 Printing from OA Percent Outdoor Air mode 21 6 3 5 Printing o...

Page 3: ...tion Procedure ZERO Calibration 35 8 3 Calibration Procedure SPAN Calibration 38 9 Specifications 41 10 Calculation Result DT WB AH and HR 42 10 1 What is DT 42 10 2 What is WB 42 10 3 What is AH 43 10 4 What is HR 43 11 Troubleshooting 44 11 1 Battery Check 44 11 2 Initial Operation Check 44 11 3 Check While Measuring 44 11 4 Printer Check 44 11 5 Digital Output Check 45 11 6 Analog Output Check ...

Page 4: ...rminal DC Input Terminal Power Switch I ON Ｏ OFF Analog output Terminal Optional Approx 188 Battery Compartment 1 Part Names and Functions 1 1 Main Body Unit mm Approx 51 Approx 88 Probe Socket IAQ MONITOR Approx 66 Operation Panel Display ...

Page 5: ...between temperature and humidity START HOLD KEY To start and stop calculation and or measurement To put displayed reading on hold and press this key again to release hold NAVIGATION KEY 1 In the Normal Measurement Mode this key is used to change the display item relating to humidity See P 9 2 In the MENU screen this key is used to select a desired item or to set a numeric value MENU START HOLD SET...

Page 6: ... Part Names and Functions 3 1 3 Probe Unit mm Approx φ15 Approx 43 Approx 320 Approx 169 Approx 53 Approx φ25 CO2 sensor Humidity Sensor Temperature Sensor CO Sensor Probe Number Approx φ32 L Approx 2000 ...

Page 7: ...atteries Mixing different types of batteries or incorrect battery polarity may cause battery leakage or damage to the instrument Batteries CANNOT be recharged by the optional AC adapter 3 Lift the cover away from the instrument 1 Press down the battery cover with your finger as shown left 2 Slide the cover toward the bottom of the instrument 5 Put the cover back on by reversing the above procedure...

Page 8: ...nto the main body or twist the probe when it is attached as it may cause a serious damage to the instrument 2 3 Disconnecting Probe CAUTION Make sure that the power is OFF when connecting or disconnecting the probe 1 Pull up the probe s connector See chart 1 A 2 Pull out the connector from the main body with the connector up See below chart 2 CAUTION DO NOT twist the probe when it is connected as ...

Page 9: ...cted properly Power Switch I Power ON Ｏ Power OFF Check the Battery Level Indicator in the upper right corner to confirm the remaining battery level When the battery level drops to a level requiring replacement the indicator starts blinking Since each battery has different battery life it is recommended to replace them ahead blinking Time to replace batteries LOCK When is displayed the instrument ...

Page 10: ...form an accurate measurement it is recommended to use the provided prove stand and to place the probe away from you while measuring How to use the Probe Stand Lightly push the grip part of the probe into the probe stand s holder as shown in the below figure 1 Make sure to place the probe stand on a stable flat surface Placing the probe on an unstable surface may cause the probe stand to fall and d...

Page 11: ...eat generated by the lamp It is recommended that the measurement is performed in an environment with at least 0 1m s airflow to obtain accurate readings 2 5 3 Humidity Measurement Precautions If a measurement is performed in the place where the humidity is high for a long period of time or temperature changes rapidly humidity reading may become exceedingly high due to dew condensation When dew con...

Page 12: ...ature 1 CO2 CO Humidity 2 CO2 CO and Humidity Measurement Screen Press key when the screen in the left is displayed to change the humidity related display mode in the sequence of Humidity 3 Dew point Temperature DT 4 Wet bulb Temperature WB 5 Absolute Humidity AH and 6 Humidity Ratio HR See P 42 for detailed information on each item 3 Due point Temperature Measurement Screen 4 Wet bulb Temperature...

Page 13: ... display Press key again to recover from the HOLD mode Maximum Value Hold How to Hold the Maximum Value Display Procedure When the NORMAL Measurement mode screen is displayed keep pressing key While is being pressed HOLD indicator keeps appearing on the left side of the display and the maximum values of each parameter CO CO2 Humidity or Temperature are shown on the screen Release key to keep the m...

Page 14: ...Time Average AVG AVG ΣTRIAL N N Maximum MAX MAX TRIAL i Minimum MIN MIN TRIAL j CALCULATION MODE SETTING SCREEN 1 CALCULATION MODE AVERAGE Average every second s data during sampling time and make it as one measurement data INSTANT Make an instantaneous value per each sampling time as one measurement data 2 SAMPLING TIME 1 999 sec Set the length of sampling time 3 No TRIAL 1 999 Set how many data ...

Page 15: ...e will be saved as raw data DATA STORAGE YES NO Use key to select 4 DATA STORAGE and press key Use key to select YES or NO and press key You CANNOT store more than what is left in the memory If you set the number more than the number of remaining data locations it automatically adjusts to the amount of remaining memory For example if the remaining memory is R0020 1500 you can only measure 20 times...

Page 16: ...Use key to check each parameter in the sequence of CO2 CO Temperature Humidity Dew point Temperature DT Wet bulb Temperature WB Absolute Humidity AH Humidity Ratio HR As for Dew point Temperature Wet bulb Temperature Absolute Humidity and Humidity Ratio only average values will be displayed Press key to return to the MENU screen Calculation data will be stored when 4 DATA STORAGE is set to YES Rel...

Page 17: ...ir A measurement takes place in the following sequence Return Air Supply Air Outdoor Air Average value in each point is used to calculate percent outdoor air Temperature or CO2 concentration data at each point TRIAL 1 TRIAL N will be also stored in the memory TRIAL 1 2 3 N TRIAL 1 2 3 N TRIAL 1 2 3 N Time required to measure at each point Sampling Time N Number of Trial Return Air R_A Supply Air S...

Page 18: ...key to select 3 No TRIAL and press key Use key to select the number of trials 1 999 times and press key PERCENT OUTDOOR AIR OA MEASUREMENT MODE SETTING SCREEN 1 CALCULATION MODE TMP To read temperature value and perform calculation CO2 To read CO2 concentration value and perform calculation 2 SAMPLING TIME 1 999 sec Set the length of sampling time instantaneous value 3 No TRIAL N 1 999 times Set h...

Page 19: ...pressing key However any measured data will not be saved Waiting for the next measurement point After Return Air R_A measurement is completed NEXT will show up at the top to indicate that it is waiting for the next Supply Air S_A measurement to be started After that Supply Air S_A measurement and Outdoor Air O_A measurement will be performed respectively Display Icons 1 RDY Current Status READY SA...

Page 20: ...ey to display average values of Return Air R_A Supply Air S_A and Outdoor Air O_A at each point Press key to return to the MENU screen When YES is selected for DATA STORAGE the calculation result will be stored Related Functions When printer is connected press key to print out the calculation result To redisplay stored data P 18 To print out measured data P 20 ...

Page 21: ...OA CO2 concentration of R_A S_A and O_A 6 2 To Redisplay Stored Data Display Procedure Press key to bring up the MENU screen Use key to select 4 DATA OUTPUT and press key Use key to select 1 DISPLAY and press key CALCULATION OA OA To set page Use key to select the page that you want to display and press key Page number to be output Measurement Mode Calculation A AVERAGE I INSTANT Measurement Date ...

Page 22: ...t calculation START and press key The cursor will move to END No Use key to select data number where to end the calculation END and press key Press key to display the calculation result of the data range selected You cannot select more than one range CALCULATION TION OA In CALCULATION mode Press key to display calculation result in the sequence of CO2 CO Temperature Humidity DT WB AH HR Only avera...

Page 23: ...ng Measurement Unit and Baud Rate Page 30 As for setting the printer refer to the printer s operation manual Connecting the instrument with a printer 1 Connect a printer to the instrument by inserting a connecting cable into RS232 terminal located at the side of the instrument 2 Turn ON the power of the instrument first and then turn ON the printer 3 Make sure that the instrument is in NORMAL Mode...

Page 24: ...PM CO AVG 0 9 PPM CO MIN 0 7 PPM CO MAX 25 6 ﾟ C AVG 25 6 ﾟ C MIN 25 5 ﾟ C MAX 64 6 RH AVG 64 5 RH MIN 64 4 RH DT 15 4 ﾟ C WB 18 1 ﾟ C AH 7 5 g m3 HR 6 4 g kg PAGE SET PAGE 002 MODE OA TMP DATE 2004 06 19 TIME 13 35 23 ATM 1013hPa DATA 003 SAMPLING TIME 001 START 001 END 003 MAX 25 5 ﾟ C R_A AVG 25 4 ﾟ C R_A MIN 25 4 ﾟ C R_A MAX 24 3 ﾟ C S_A AVG 24 2 ﾟ C S_A MIN 24 1 ﾟ C S_A MAX 23 2 ﾟ C O_A AVG 2...

Page 25: ... Press key to show a cursor at START No Use key to select data number START where to start calculation and press key The cursor will move to END No Use key to select data number END where to end the calculation and press key Press key to bring up the PRINT OUTPUT screen to select what to print out Use key to select 1 2 or 3 and press key to print out 1 RESULT Print out measurement condition and ca...

Page 26: ...2 23 0 006 25 4 24 2 23 0 007 25 4 24 2 23 0 008 25 5 24 2 22 9 009 25 4 24 1 22 9 010 25 4 24 1 22 8 PAGE SET PAGE 011 MODE CALCULATION I DATE 2004 06 21 TIME 16 23 08 ATM 1013hPa DATA 005 SAMPLING TIME 001 START 001 END 005 MAX 612 PPM CO2 AVG 598 PPM CO2 MIN 567 PPM CO2 MAX 1 2 PPM CO AVG 0 9 PPM CO MIN 0 7 PPM CO MAX 25 6 ﾟ C AVG 25 6 ﾟ C MIN 25 5 ﾟ C MAX 64 6 RH AVG 64 5 RH MIN 64 4 RH DT 15 ...

Page 27: ...setting BAUD RATE refer to 7 2 Changing Measurement Unit and Baud Rate Page 30 As for setting the computer refer to the computer s operation manual Connecting the instrument with a computer 1 Connect a computer to the instrument with the RS232 cable 2 Turn ON the power of the instrument 3 Make sure that the instrument is in NORMAL Mode RS232C Cable Wiring Diagram PC D Sub9 pin Connection IAQ Monit...

Page 28: ...S will be returned The display range of measurement items shown on the screen and configured atmospheric pressure will be output What will be output CTH CO measurement range temperature measurement range configured atmosphere pressure CO measurement range 00 0 50PPM 01 0 500PPM Temperature measurement range 00 0 60 o C 01 20 60 o C Display Procedure To output measurement unit Enter U After the com...

Page 29: ...Temperature Humidity CALCULATION Mode After sending F command Data No CO CO2 Temperature Humidity DT WB AH HR Percent Outdoor Air OA Mode Data No OA R_A S_A O_A Display Procedure To output measurement condition Enter M Enter the page number of the measurement condition to be output in 4 digit number After the command is received AM will be returned and the measurement condition of the specified pa...

Page 30: ...0 ppm M 2500 V ppm 0 5000 ppm M 5000 V ppm Temperature T 0 50 o C T 50 V o C 0 100 o C T 100 V o C 20 30 o C T 50 V 20 o C 20 80 o C T 100 V 20 o C Temperature F 32 122 o F F 90 V 32 o F 32 212 o F F 180 V 32 o F 4 86 o F F 90 V 4 o F 4 176 o F F 180 V 4 o F Humidity H 0 50 RH H 50 V RH 0 100 RH H 100 V RH It is linear output whose minimum value is 0V and maximum value is 1V Output data is output ...

Page 31: ...ress key Use key to switch in the sequence of CO CO2 TMP Temperature and HUM Humidity Select the measurement item to output and press key To set output range Use key to select 2 and press key Use key to select the output range and press key To save the setting Use key to select 3 SAVE INFO and press key to save the setting If pressing key before completing the setting you will return to the MENU s...

Page 32: ...to move a cursor to the item that you want to change and use key to change the value Press key to fix the value and the cursor will move to the next item To save the changes Use key to select 4 SAVE INFO and press key to save the changes and go back to the MENU screen After changing the date the date of the measurement data stored before the change will also be altered accordingly If pressing key ...

Page 33: ...hange the setting Press key to fix the changes To save changes Use key to select 5 SAVE INFO and press key to store the changes and return to the MENU screen If pressing key before completing the setting you will return to the MENU screen without that the changes are saved Unit Conversion Table Temperature T o F 1 8 x T o C 32 Absolute Humidity 1 g m3 6 24 10 5 lb ft3 Humidity Ratio 1 g kg 9 9999 ...

Page 34: ...ey to select the last page to be deleted and press key Use key to select YES to delete the selected pages and press key The selected page will be deleted and the subsequent page number will be shifted up EX There are data from page 1 to page 4 If the 3rd page is deleted the data in the 4th page will be shifted up to the 3rd and the data from page1 to page3 will be remained Page 1 Page 2 Page 3 Pag...

Page 35: ...y to select 2 ALL CLEAR to delete all and press key Use key to select YES to delete all data and press key After all the data is deleted the Remaining Memory will become 1500 The first page to be deleted The last page to be deleted Delete partially YES or NO Delete all YES or NO Remaining Memory Total Memory It shows that the number of measurement data ...

Page 36: ...r inside the battery cover located at the rear side of the main body The contrast of the screen can be adjusted by using a flat blade precision screwdriver 0 9 1 5mm As described in the picture below turn it clockwise to darken and vice versa Contrast Adjuster Dark Bright ...

Page 37: ... a consumable 8 1 Preparation for Calibration Fully warm up the instrument for about 20 minutes before performing a calibration Normally calibrate ZERO gas first then Span gas It is also acceptable if you calibrate either ZERO gas or Span gas Valve Close Open Turn to Turn to the back the front 1 Confirm if the valve of the regulator is closed 2 Attach the regulator to a ZERO gas cylinder 3 Connect...

Page 38: ...Press key Use key to select YES and press key Now it is ready for calibration It indicates the type of a sensor whose data is displayed on the screen This is only applicable when selecting BOTH The data of the one with symbol is selected In the left picture CO s status is shown at the moment When either CO or CO2 is selected in the previous step only the selected type will be displayed Reading bef...

Page 39: ...l li ib br ra at ti io on n f fa ai il ls s w wh he en n 1 CO concentration maintains above 10ppm in 30 seconds after calibration starts 2 the calibration value s deviation Max value Min value does not fall within 6ppm for 20 seconds before calibration ends C CO O2 2 c ca al li ib br ra at ti io on n f fa ai il ls s w wh he en n 1 CO concentration maintains above 200ppm in 30 seconds after calibra...

Page 40: ...elect YES to retry calibration Press key to go back to the MENU screen If ERR Error is displayed during calibration please check the cause and return to the MENU screen for retrying calibration When selecting CO or CO2 the procedure will be the same Reading after calibration It shows that calibration is ended It shows the result of calibration when calibration fails Operation Indicates the selecte...

Page 41: ...y to select the sensor that you want to calibrate 2 CO or 3 CO2 and press key CO2 is selected in this example Perform a calibration by using span gas Press key Use key to enter a concentration value displayed on the SPAN gas cylinder and press key After setting the concentration select YES by using key and press key Enter the concentration value shown on SPAN gas cylinder label Concentration Setti...

Page 42: ...o the MENU screen without the changes are saved Operation Reading after calibration It shows that calibration is ended It shows a calibration result It indicates that it is calibrating now It shows that gas is emitted and it is waiting for key to be entered It shows countdown initial value unit second CO Calibration 90sec CO2 Calibration 120sec Replace the ZERO gas cylinder that is connected to th...

Page 43: ...r ra at ti io on n f fa ai il ls s w wh he en n 1 CO2 concentration does not reach 60 of the configured value of standard concentration in 30 seconds after calibration starts 2 the calibration value s deviation Max value Min value does not fall 6 or 100ppm the greater value will be applied of the configured value of standard concentration for 20 seconds before calibration completes Select CO SPAN ...

Page 44: ...98 0 RH Resolution 0 1 RH Accuracy 2 80 RH 2 0 RH 80 98 RH 3 0 RH Response Time Approx 15sec 90 responsive Measuring Function Hold the reading Hold the MAX reading Remaining battery level indicator 5 levels Time display function Barometric pressure correction Selection of measuring units Temp DT WB C or F AH g m3 or lb ft3 Humidity Ratio g kg or lb lb Max Min Average value measurement measurement ...

Page 45: ... y 0 td 13 715 y 8 4262 10 1 y2 1 9048 10 2 y3 7 8158 10 3 y4 In case of y 0 td 13 7204 y 7 36631 10 1 y2 3 32136 10 2 y3 7 78591 10 3 y4 ew Saturated Vapor Pressure Pa T Absolute Temperature K t o C 273 15 T Dry bulb Temperature o C E Water Vapor Pressure Pa U Relative Humidity Td Dew point Temperature o C 10 2 What is WB WB Wet bulb Temperature Wet bulb temperature is measured using a wet bulb t...

Page 46: ...water per 1kg of dry air To calculate absolute humidity apply temperature and relative humidity on below formula ln ew 6096 9385 T 1 21 2409642 2 711193 10 2 T 1 673952 10 5 T2 2 433502 ln T e U 100 eW D g m3 0 794 10 2 e 1 0 00366 t ew Saturated Water Vapor Pressure Pa T Absolute Temperature K t 273 15 t Dry bulb Temperature e Water Vapor Pressure Pa U Relative Humidity D Absolute Humidity g m3 1...

Page 47: ... humidity g m3 lb ft3 and humidity ratio g kg lb lb 30 11 3 Check While Measuring Symptom Possible Cause s Solution s Refer To Page No Reading is displayed as Measurement range is exceeded The instrument must be used in the specified measurement range 41 Reading is displayed as Or it is kept showing as 0 Probe may not be connected property Check the connection 5 Probe wire disconnection or sensor ...

Page 48: ... polarity of the output terminal is correct 27 The reading may be in HOLD mode 27 Output appears in tiered pattern Output is set per second 27 Incorrect Output Value Analog output setting may be incorrect 27 Output value range setting may be incorrect 27 Load impedance may be set lower than the specified value Load impedance must be set to 5K Ω and over 27 11 7 Calibration Check Problem Possible C...

Page 49: ...e mishandling improper packaging by the owner alteration accident electrical current fluctuations failure to follow operating maintenance or environmental instructions prescribed in the PRODUCT s instruction manual provided by KANOMAX or service performed by other than KANOMAX NO IMPLIED WARRANTY INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE APPLIES TO THE P...

Page 50: ...years after production cessation of the PRODUCT This storage period of repair parts is considered as the period during which KANOMAX can provide repair service For more information please contact your sales representative When you make a call please have the following information of your PRODUCT at hand 1 PRODUCT name 2 Model number 3 Serial number 4 Probe number 5 Description of Symptom and 6 Dat...

Page 51: ...x usa com E Mail info kanomax usa com CHINA Shenyang Kano Scientific Instrument Co Ltd No 12 4 Jia Wencui Road Heping District Shenyang City PRC TEL 86 24 23845309 FAX 86 24 23898417 URL http www kanomax com cn E mail sales kanomax com cn Copyright Kanomax Japan Inc All rights reserved 2014 No copying distribution publication modification or incorporation of this document in whole or part is permi...

Page 52: ...13 Contact Information 49 ...

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