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Supco IAQ50, Operation Manual, Page: 3 / 17

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Supco IAQ50 Operation Manual Download Page 3

MATERIAL SUPPLIED

Meter
Adaptor
Operation manual
Plain white box

This package contains:

POWER SUPPLY

The meter is powered by an AC adaptor
(12V/1A output).
 

2

LCD DISPLAY

TWA          Time weighted average(
STEL          hort-term exposure limit
                  (15 minutes weighted 
DP             Dew point temperature
AIR            Air temperature
WBT          Wet bulb temperature
%               Unit of relative humidity

o

E (C/F)    Celsius/Fahrenheit 

AVG/CO/ALM/HLD/      
                  Vain icons in these models

                        
 

MAX/MIN  Maximun/Minimum readings

 8 hours)

S

average)

%

%

O

O

ALM

HLD

CO

2

    CO

2

concentration

in ppm

Relative
humidity in %

Air temp.
Dew point
Wet bulb
temp. in 

o

C or  F 

o

Symbols

MAX MIN AVG TWA STEL PPM

CO

Summary of Contents for IAQ50

Page 1: ... Indoor Air Quality Monitor CO2 Humidity Temperature Model 7721 77231 7722 77232 SEALED UNIT PARTS CO INC PO BOX 21 2230 LANDMARK PLACE ALLENWOOD NJ 08720 USA Phone 732 223 6644 Fax 732 223 1617 www supco com info supco com ...

Page 2: ...ics of weighted average TWA 8 hours weighted average STEL 15 minutes weighted average Visible and audile CO warning alarm 2 Alarm output for ventilation control ABC Automatic Baseline Calibration and manual CO2 via RS232 interface Includes 12 V Power Adapter 1 Ideal for Indoor Air Quality Diagnostics Identify Sick Builiding Syndrome due to High CO2 Levels ...

Page 3: ...rt term exposure limit 15 minutes weighted DP Dew point temperature AIR Air temperature WBT Wet bulb temperature Unit of relative humidity o E C F Celsius Fahrenheit AVG CO ALM HLD Vain icons in these models MAX MIN Maximun Minimum readings 8 hours S average O O ALM HLD CO2 CO2 concentration in ppm Relative humidity in Air temp Dew point Wet bulb temp in o C or F o Symbols MAX MINAVG TWASTEL PPM C...

Page 4: ...alibration and setup Activates MAX MIN STEL TWA function Selects mode or decreases value in calibration and setup KEYPAD SET SET CAL ESC CAL ESC DP WB M X N AVG RESET RESET DP WB M X N AVG OPERATION Plug in the adaptor and the meter turns on automatically with a short beep It performs 30 seconds countdown Fig 1 for meter warm up then enters normal mode with current CO temperature 2 and humidity re...

Page 5: ...akes 30 sec to respond for CO sensor and 30 minutes for RH 2 NOTE Do not hold the meter close to faces in case that exhalation affects CO levels 2 AIR DP WBT DP WB PPM PPM Under normal mode press to see the minimum maximum and weighted average readings Each press of it displays MIN MAX STEL TWA in sequence and returns to normal mode In MIN and MAX modes it shows the minimum and maximum readings of...

Page 6: ...ighted average of readings taken since power on Same for TWA values appear before 8 hours 2 It takes at least 5 minutes to calculate STEL and TWA The display shows Fig 7 during the first 5 minutes from power on O O STELCO2 Fig 7 The meter features visible and audible alarm to give warnings when CO2 concentration exceeds the limit Users can set up 2 limits An upper limit for alarm threshold that re...

Page 7: ...activator for conditioning the air quality The relay will drop out when CO readings fall under the lower limit 2 It emits beeps Abt 80dB with blinking LED when CO level goes over the upper 2 limit Beeps can be stopped by pressing any key or automatically stops when CO reading falls below lower limit 2 If the beeper is temporarily shut it will sound again when readings fall below lower limit and th...

Page 8: ...er limit The current set value 2 will be blinking on LCD Fig 9 CAUTION It s suggested to set up the alarm value within specification range that accuracy is ensured The out of spec readings are only for reference and not suitable to use as alarm limits SETUP SET SET CAL ESC CAL ESC Hold down under normal mode for more than 1 sec to enter setup mode To exit setup press in P1 0 P3 0 or P4 0 and it re...

Page 9: ...4 0 ABC SELECTION Fig 11 ABC Automatic Baseline Calibration is to implement baseline calibration to eliminate the zero drift of the infrared sensor The ABC function default is off when turning on the meter Users can enable it by following the procedure Press in P3 0 or in P1 0 to access P4 0 for selecting ABC function Fig 13 Fig 10 SET SET CO2 PPM SET SET CAL ESC CAL ESC When the preferred value i...

Page 10: ...spitals or offices with windows shut The meter is calibrated at standard 400ppm CO concentration in factory 2 It s suggested to do either ABC or manual calibration regularly to maintain good accuracy Fig 14 Fig 15 CO2 CO2 Press and it goes into P4 1 with blinking dis default Fig 14 on the lower left display To enable the ABC function press or and En blinks for choice Fig 15 After the preferred sel...

Page 11: ...lace the meter in the calibration site Turn on the meter and hold down and simultaneously to enter CO2 calibration mode Fig 16 400ppm and CAL are blinking on the LCD while performing calibration CAL ESC CAL ESC DP WB CO2 PPM Manual Calibration 10 ABC Automatic Baseline Calibration ABC is to calibrate the meter at the minimum CO reading detected during 2 7 days continuous monitoring power on It is ...

Page 12: ... salt solution The ambient condition is recommended o to be at 25 C and stable humidity better to be close to the calibrating value To abort calibration hold down for more than 1second at any time RH CALIBRATION O O Fig 17 O O Fig 18 After 33 calibration plug the sensor probe into 75 salt bottle then press to enter 75 calibration Fig 19 CAUTION Do not calibrate the humidity without the default cal...

Page 13: ...is completed and it returns to normal mode Error messages E01 CO sensor damaged 2 E02 The value is under range E03 The value is over range E04 The original data error results in this error RH DP WB E07 Too low voltage to measure CO2 Check if the adaptor output is 12V E11 Retry humidity calibration E17 Retry CO calibration 2 E31 Temperature sensor damaged E34 Humidity sensor damaged Can t power on ...

Page 14: ...rity SPECIFICATION IAQ50 CO2 Temperature Humidity Range Resolution 1 ppm Pressure 1 6 reading per kPa Dependence from normal pressure 100kPa Range 14 F 140 F 10 0 60 0 C Resolution 0 1 F 0 1 C Accuracy 0 9 F 0 6 C Range 0 0 99 Resolution 0 1 Accuracy 3 10 90 5 others Warm Up 30 seconds Operating 32 F 106 F 0 50 C 0 95 RH avoid condensation Storage 68 F 140 F 20 60 C 0 99 RH avoid condensation Powe...

Page 15: ...a period of 2 years from the date of purchase This warranty covers normal operation and does not cover misuse abuse alteration neglect improper maintenance or damage resulting from leaking batteries Proof of purchase is required for warranty Warranty is void if the meter has been opened 14 ...

Page 16: ... 1000 ppm indicates inadequate ventilation complaints such as headaches fatigue and eye throat irritation will be more widespread 1000 ppm should be used as an upper limit for indoor levels Non Enforced Reference levels Regulatory exposure limit ASHRAE Standard 62 1989 1000ppm CO2 concentration in occupied building should not exceed 1000ppm Building bulletin 101 BB101 UK standards for schools say ...

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