Supco IAQ50 Operation Manual
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Supco IAQ50 Operation Manual

Indoor air quality monitor co2/humidity/temperature
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OPERATION MANUAL
IAQ50
Indoor Air Quality Monitor
CO
/Humidity/Temperature
2
SEALED UNIT PARTS CO., INC.
PO BOX 21, 2230 LANDMARK PLACE
Model:
7721
ALLENWOOD, NJ 08720 USA
Phone: 732-223-6644 • Fax: 732-223-1617
77231
www.supco.com • info@supco.com
7722
77232

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Summary of Contents for Supco IAQ50

  • Page 1 OPERATION MANUAL IAQ50 Indoor Air Quality Monitor /Humidity/Temperature SEALED UNIT PARTS CO., INC. PO BOX 21, 2230 LANDMARK PLACE Model: 7721 ALLENWOOD, NJ 08720 USA Phone: 732-223-6644 • Fax: 732-223-1617 77231 www.supco.com • info@supco.com 7722 77232...
  • Page 2 INTRODUCTION Ideal for Indoor Air Quality Diagnostics. Identify Sick Builiding Syndrome due to High CO Levels. Features/Benefits: • Triple displays of CO level, temperature and humidity. • Stable NDIR sensor for CO detection • Statistics of weighted average TWA (8 hours weighted average) STEL (15 minutes weighted average) •...

  • Page 3: Material Supplied

    MATERIAL SUPPLIED This package contains: Meter Adaptor Operation manual Plain white box POWER SUPPLY The meter is powered by an AC adaptor (12V/1A output). LCD DISPLAY MAX MIN AVG TWA STEL PPM concentration in ppm Air temp. Dew point Relative Wet bulb humidity in % temp.

  • Page 4: Operation

    KEYPAD Enters setup mode. Saves and finishes settings. Enters CO calibration with DP/WB Enters RH calibration with Exits setup page/mode. Resets the meter and clear MAX/MIN. RESET RESET Terminates during calibration. Selects AIR, DP, WBT temps display. DP/WB Selects mode or increases value in calibration and setup.
  • Page 5 TAKING MEASUREMENT The meter starts taking measurement after power on and updates readings every second. In the condition of opera -ting environment change (ex. from high to low temp.), it takes 30 sec to respond for CO sensor and 30 minutes for RH. NOTE: Do not hold the meter close to faces in case that exhalation affects CO levels.

  • Page 6: Alarm & Output

    In STEL and TWA modes, the main display shows the weighted average of CO readings for the past 15 minutes (STEL) and 8 hours(TWA). The lower displays are the current AIR, DP/WB temperatures and humidity. (Fig.6) STEL Fig.6 NOTE: 1. If the meter is turned on for shorter than 15 minutes, the STEL value will be the weighted average of readings taken since power on.

  • Page 7: Alarm Output

    It emits beeps(Abt.80dB) with blinking LED when CO level goes over the upper limit. Beeps can be stopped by pressing any key or automatically stops when CO reading falls below lower limit. If the beeper is temporarily shut, it will sound again when readings fall below lower limit and then go over the upper limit again, or users press...
  • Page 8 SETUP Hold down under normal mode for more than 1 sec to enter setup mode. To exit setup, press in P1. and it returns to normal mode. Note: is not applicable in these models but for future model with CO and CO measurements.

  • Page 9: Temperature Scale

    When the preferred value is set, press to go into P1. (Fig. 10) for lower limit setting. After both settings are done, press to save or without saving and return to P1. Fig. 10 TEMPERATURE SCALE Press in P1. to access P3. for set- DP/WB ting up temperature scale(Fig.11).
  • Page 10 Press and it goes into P4. with blinking “dis” default (Fig.14) on the lower left display. To enable the ABC function, press and “En” blinks DP/WB for choice(Fig. 15). After the preferred selection is done, press to save the setting or without saving and return to P4.
  • Page 11 (Automatic Baseline Calibration) ABC is to calibrate the meter at the minimum CO reading detected during 7 days continuous monitoring (power on). It is supposed that the ventilating area can have fresh air with CO level in around 400ppm during a period of time.
  • Page 12 RH CALIBRATION The meter defaults to be calibrated the humidity with 33% and 75% salt solution. The ambient condition is recommended to be at 25 C and stable humidity(better to be close to the calibrating value). To abort calibration, hold down for more RESET RESET...

  • Page 13: Troubleshooting

    Calibration Salt Solutions are not available through SUPCO. Fig.19 “CAL” and calibrating value (75.2% if at 25 C) are blinking on the LCD with current temperature at the left. Meter is now calibrating. Wait about 60 minutes until blinking stops, then calibration is completed and it returns to normal mode.
  • Page 14 RS232 interface and software. The protocol is as follows. A. 9600 bps, 8 data bits, no parity. B. Format ( ASCII) Model IAQ50 Cxxxxppm:Txxx.xC(F):Hxx.x%: dxxx.xC(F):wxxx.xC(F) LRC CRLF Description: $CO :Air:RH:DP:WBT LRC CRLF SPECIFICATION IAQ50 0-2000ppm, Accuracy +50ppm...

  • Page 15: Warranty

    WARRANTY The meter is warranted to be free from defects in material and workmanship for 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.

  • Page 16: Co 2 Levels And Guidelines

    Appendix LEVELS AND GUIDELINES Non-Enforced Reference levels NIOSH recommendations 250-350 ppm: normal outdoor ambient concentrations 600 ppm: minimal air quality complaints 600-1000 ppm: less clearly interpreted 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.

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