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HTA 77596 Operation Manual

Portable iaq meter
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OPERATION MANUAL
PORTABLE IAQ METER
Model:
77597, 4 in 1
77596, 3 in 1

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Summary of Contents for HTA 77596

  • Page 1 OPERATION MANUAL PORTABLE IAQ METER Model: 77597, 4 in 1 77596, 3 in 1...
  • Page 2 INTRODUCTION Thank you for purchasing this portable IAQ me ter. The me ter me asures CO level,CO level, air temp ., dew point, wet bulb temp . and humi dity(DP, WB , RH are for mo dels 77597 only) and is an ideal instrume nt for indoor air quality (IAQ) diagnosis.

  • Page 3: Material Supplied

    Features: Big LCD display with blue backlight to use in dark area One touch to display CO /Dew point temperature/Wet bulb temperature/ Air temperature/Humidity/CO in turns. Designed with NDIR (non-dispersive infrared) Waveguide technology CO sensor Programmable warning CO level Long time drift compensation on CO sensor Audible alarm (~80db)threshold setting Max, Min, TWA, STEL functions included...

  • Page 4: Power Supply

    POWER SUPPLY The meter is powered by either 4 AA batteries or a DC adaptor(9V/1A output). Install the batteries into the battery compartment on the rear and make sure they are in correct polarity and good contact. When an adaptor is used, it will cut off the power supply from batteries.

  • Page 5: Lcd Display

    LCD DISPLAY HOLD HOLD TA DP WBT STEL STEL %rh rh Re call Symbols Upper LCD CO2/CO/Temp..reading Lower LCD Real time display Carbon dioxide reading Carbon monoxide reading HOLD Readings are freezed unchanged MIN/MAX Minimum/Maximun readings STEL Short-term exposure limit (15 minutes weighted average) Time weighted average(8 hours) Low battery indicator...

  • Page 6: Operation

    Freezes the current readings. HOLD Selects unit or increases value in setup. Cancels data hold function. Press to manually record the reading. Selects unit or decreases value in setup. Activates MIN, MAX, TWA, STEL M /AVG function. Saves and finishes settings. OPERATION POWER ON/OFF Press...
  • Page 7 CO2 (Carbon Dioxide) MODE Press to switch the mode to CO2. RECALL User can get the CO2 reading in ppm unit on main display.(Fig.4). The lower display shows the real time clock. Fig.4 Fig.5 CO (Carbon Monoxide) MODE Press to switch the mode to CO. RECALL User can get the CO reading in ppm unit on main display.(Fig.5).
  • Page 8 DATA HOLD HOLD In normal display mode, press freeze the readings, "HOLD” icon is flashed on the left top of LCD(Fig.9). All current readings are kept unchanged. Press again to cancel the hold HOLD function. HOLD HOLD %rh rh Fig.9 NOTE: THE HOLD FUNCTION IS DISABLE IN MIN/MAX/ AVG MODE.

  • Page 9: Min Max Stel Twa

    While in “HOLD” mode, STEL and TWA will remain updating every 5 mins. In this max/min/STEL/TWA/current modes, it shows the corresponding readings on main display and the accumulated time of how long you are in this mode. Fig10~12). In this mode, press to switch the MODE RECALL...
  • Page 10 MANUALLY RECORDING The meter features 99 point memories. In normal or hold mode, Press to record, icon and main display flash for about 3 seconds. The main display shows the memory serial number , at most 99 points.( Fig. 15) Each memory contains all parameters (CO2, CO, TA..%rh), not only the parameter you choose to see on main...
  • Page 11 The meter can automatically record readings of CO2/CO/TEMP./RH for long time environment monitoring. The memory capacity is 32000 (#77597) or 24000 (#77596) points. Users can set up sampling rate from 1 second to 4hours 59 minutes and 59 seconds (See SETUP P40).

  • Page 12: Auto Power Off

    Fig.19 To terminate data logging, press START for 2 seconds, icon stops flashing START While press to start the logging again, the previous logging records are overwrite. Press key to switch to the mode you MODE RECALL want to see. Except the mode switch function, min/max, manual record, hold and recall functions are all disabled during logging.
  • Page 13 P10: 99 MEMORIES CLEAR When entering setup mode, P10 and “CLr” (Fig.21) are displayed on the LCD. Press to go into P11 and decide to M /AVG clear or keep all the manual records. The current set will be blinking on LCD (Fig.22).
  • Page 14 P30 TEMPERATURE UNIT When entering setup mode, P30 and “unit” (Fig.25) are displayed on the LCD. Press to go into P31 and decide the M /AVG temperature unit. The current set will display on LCD (Fig.26). HOLD Press to choose C or F and press to confirm.
  • Page 15 P50 PRESSURE COMPENSATION When entering setup mode, P50 and “PrES” (Fig.29) are displayed on the LCD. Press to set pressure compensation M /AVG value for CO2 measurement. The current set will flash on LCD (Fig.30).The barometric pressure unit is kpa. Press to adjust the pressure HOLD...
  • Page 16 CO CALIBRATION The meter is calibrated at standard 400ppm CO concentration in factory. It’s suggested to do manual calibration regularly to maintain good accuracy. Note: When the accuracy becomes a concern after a long time usage, return to dealers for standard calibration. CAUTION: Do not calibrate the meter in the air with unknown CO concentration.
  • Page 17 Fig.33 Fig.34 RH CALIBRATION (77597) 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, just turn off the meter.
  • Page 18 “CAL” and calibrating value (75.3% if at 25 C) are blinking on the LCD. Meter is now calibrating, and will finish in about 60 minutes when “CAL” and humidity stop blinking. To abort the cali- bration, turn off the meter at any time. Fig.35 CO CALIBRATION When the accuracy becomes a concern...

  • Page 19: Troubleshooting

    Fig.37 Fig.36 NOTE: It is allowed to adjust the CO calibration point from 385~415ppm (400+15ppm) TROUBLESHOOTING ? Can’t power on -Press for more than 0.3 seconds ON/OFF and try again. Check whether batteries are in good contact and correct polarity, or the adaptor is well plugged.
  • Page 20 PC CONNECTION Connect the logger to PC, users can do logging setting and data transmission with the included software. Plug the USB cable into the socket at the right side of the meter and the other port to PC. Then install the software in your PC with the following procedure.
  • Page 21 Software Operation AutoConnect Start the software and it will detect logger connection automatically and indicate the COM Port information at the bottom of the main screen as well as the COMPort setting column. Logger Settings To set up logging plan, click “Setting” icon and select “Logger”.
  • Page 22 Data Transmission To transmit auto recorded data from the meter, click “Download” icon on the left top side of the main screen. All auto- recorded data in the logger will be transmitted. The raw data with time stamp will display at the lower part of the screen and the graph in the middle.
  • Page 23 Zoom window: Hold down “Ctrl” key and drag click the left button of the mouse to select an area on the Graph and the selected area will be enlarged . Zoom Xaxis: Hold down “Ctrl” key and drag click the left button of the mouse to select an area on the Graph and the X-axis of the selected area will be enlarged.

  • Page 24: Specification

    “Load” and select a desired file and it will be loaded in the main screen with the file details at the left top side. SPECIFICATION 77597 77596 Measuring range 0~9999 ppm, 0~9999 ppm, (5001~9999 ppm out of scale range) (5001~9999 ppm out of scale range)

  • Page 25: Co 2 Levels And Guidelines

    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.

  • Page 26: Co Levels And Guidelines

    CO LEVELS AND GUIDELINES Symptoms and applicable standard Normal background levels Maximum indoor air quality level: Maximum allowable concentration per ASHRAE Residential standards 62-1989 for living area. Maximum limit 8 hrs of continuous exposure per California OSHA workplace standards. Maximum 8 hrs average exposure level per US OSHA workplace standards.

  • Page 27: Warranty

    WARRANTY The meter is warranted to be free from defects in material and workmanship for a period of one year 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 28 Accuracy, the Zenith of Measuring / Testing Instruments ! Hygrometer/Psychrometer Thermometer Anemometer Sound Level Meter Air Flow meter Infrared Thermometer K type Thermometer K.J.T. type Thermometer K.J.T.R.S.E. type Thermometer pH Meter Conductivity Meter T.D.S. Meter D.O. Meter Saccharimeter Manometer Tacho Meter Lux / Light Meter Moisture Meter Data logger...

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77597

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