AZ INSTRUMENT 7727 CO2 Humidity Temp Desktop Monitor User Manual

AZ INSTRUMENT 7727 CO2 Humidity Temp Desktop Monitor

INTRODUCTION

This is an accurate, smart and easy-to-use indoor air quality monitor. In addition to measuring the CO2 concentration, it also measures the ambient temperature and relative humidity. It is also a clock and provide C02 trend of past 24 hours. This monitor is developed to be the best helper to checking the indoor air quality.

Features

• Large LCD displays CO2 value, humidity, temperature, current C02 level good/ normal/ poor indicator,
• CO2 trend of past 24 hours and hour-minute clock.
• Touch panel to program the setting
• NDIR (non-dispersive infrared) waveguide CO2 technology
• 3-color backlight (green/yellow/ red) gradually changes color with CO2 concentration. (AUTO mode)
• 7-color backlight to fit into home/office decoration and to be used as a nightlight.(ON mode)
• Programmable audible alarm threshold
• Eco mode to turn the backlight dim during nighttime
• Areas of application: Widely used in the office building, residential houses, schools, exhibition hall, shopping mall, meeting room, fitness center, restaurant and other public places where personal comfort and health are important.

MATERIAL SUPPLIED

The standard package contains below:

• CO2 monitor x 1pc

• USB-C cable x 1pc
  NOTE: provided USB-C cable is for power charging only, can’t be used for data transfer

• Operation manual x 1pc

POWER UP

This CO2 meter is designed as desktop or wall mount use. It is mainly powered up by 5VDC through USB-C cable. For mobility, you may also use power bank for temporary use. Once CO2 is powered, the LCD will auto turn on.

CAUTION

• Please take off the AC power adapter and store it well when this CO2 monitor left idle for long. Please use a standard USB power supply (such as PC’s USB port, universal AC adapter with USB port). Improper power supply can cause serious damage to the device, or result in injury or death to the user.
• This CO2 monitor is for home use, not suitable for certifying the test results. If use this CO2 monitor for testing, it does not guarantee the test results. The vents allow the air circulation liquid for measurement of the CO2 concentration and the ventilation should not be blocked.

DISPLAY KEYPAD, SPECIEICATION

1. CO2 concentration, parts per million (ppm). NDIR CO2 sensor, display up to 5000ppm
2. Ambient temperature. ‘cÍF switchable. Range 0.0-50.0C(32.0-122.0F)
3. Relative humidity. Range 5-95%RH
4. Real-time clock display. Real-time 24-hour clock (hour/minute)
5. Three emojis. The status of current CO2 level B00ppm 800ppm-1000ppm 1000ppm
6. Trend: 24-hour Historical Chart, Bar graph displays indicate the status of cO2 records up to 24 hours
7. CO2 concentration alarm buzzer. Buzzer is default as OFF and can be activated through keypad

SETTING

• Short press to switch between backlight mode.
• Setting modes. Long press to enter setting mode

VOLUME +

• While buzzer sounds, short press to mute
• While in setting mode, press to adjust value

SPECIFICATION

OPERATION

1. Power on and Measure:

2. Connect the USB-C cable to a PC or 5VDC wall adapter or power bank to power on the device.

3. After power on and 10 seconds warm-up, the device will start to measure CO2 concentration, ambient temperature and relative humidity.

4. Backlight & Buzzer Mode

5. Besides value display, this meter is also equipped with programmable

6. There are 4 different backlight modes: Auto, AL, ON and OFF. Default as Auto.

7. There are 2 buzzer modes: OFF and ON. Default as OFF. acklight and buzzer features.

8. Short press ” (SET)” key to display the existing backlight mode. To change it, press ” key to switch between Auto>AL>ON>OFF. After selecting the mode, you do not need to press any key to confirm it, just wait for 3 seconds and it will return to normal display with the setting you choose.

9. How to turn off buzzer:
   Buzzer function is default OFF in case of using in quiet places. It is required to activate buzzer function in setting mode while audible alarm is needed. While buzzer is activated and measured CO2 is over alarm threshold, buzzer sounds once a second till pressing ” (mute)” to stop.

10. Setting mode:
    Long press ” ” key till entering the setting mode. Then, press ” ” key to select setting modes in sequence: COL (Backlight COLOR), AL (Alarm setting), Buzzer, ECO (energy-saving mode), Real-Time Clock and Unit (temperature unit).
    Press ” key to adjust the parameters.
    Note : During the setting process, the device will return to the main screen after 60 sec of idle time.

11. 1 COL: The default LCD backlight color is white. A total of 7 colors are

12. AL: The default alarm setting is 1,000ppm. It is adjustable from 800ppm to 3,000ppm, the interval is 100ppm. This thresold is also related to buzzer alarm trigger and red backlight trigger in Auto mode and AL mode.

13. Buzzer activation : Buzzer is default OFF for using in quiet places. Press +” to turn to ON.

14. ECO: The default ECO setting is “ON”. Press “+” key to select “OFF”. After ECO mode is turned on, the backlight is dimmer during the period from 22:00 pm to 6:00am for saving power and easy reading.

15. Real-time:
    Set “12 Hour(AM/PM) or 24 Hour ” by pressing “+” key. The default setting is 00:00(24 Hour Clock). The setting sequence is hour then minute. After setting “hour”, press “SET” key to set “minute” (the interval is 1 hour / 1 minute). Press “+” key to adjust the value. Press and hold “+” key for 5 seconds to adjust faster.
    Note : Complete the settings(hour-minute) to save the real-time values.

16. Temperature unit: Press “+” to switch between C and’ F

Trend

Bar graph display indicates the status of CO2 records up to 24 hours “Now” bar graph displays the current CO2 and it is updated with new records every 4 seconds.

• 3-24″ bar graphs display the average C02 and it is updated with new records every 10 minutes.
• “-3” is the average CO2 concentration of the latest 3 hours.
• “-6” In past 6 hours, the average C02 concentration of the first 3-hour.
• “-12” In past 12 hours, the average CO2 concentration of the first 6-hour
• “-18” In past 18 hours, the average CO2 concentration of the irst 6-hour
• -24 In past 24 hours, the average CO2 concentration of the first 6-hour.

E.g. It is now 12:00 noon on 12/19. “-3” = 09:00-12:00 (12/19):

“-6” 06:00-09:00 (12/19); “-12″ = 00:00-06:00 (12/19) ;”-18″ = 18:00~24:00 (12/18); “-24” = 12:00-18:00 (12/18)

CO2 Calibration

• The meter is calibrated at standard 400ppm C02 concentration in factory. It’s suggested to do manual calibration regularly to maintain good accuracy.
• First of all, leave the meter in a known 400ppm CO2 condition for some minutes. press “”+ “”keys at the same time till “CAL”appears. Pressing ” ” key to start the calibration. After a period of 250 seconds count down, the display show “Pass” on display to indicate the calibration is done.
• Press “O” key return to normal measuring mode.

CAUTION : Do not calibrate the meter in the air with unknown CO2 level. Otherwise, it will be taken as 400 ppm and leads to inaccurate measurement. The manual calibration is suggested to be done outdoor with good ventilation, fresh air and sunny day where CO2level is around 400ppm. Do not calibrate in rainy day because high humidity will affect the CO2 level in air. Do not calibrate in places crowded with people or close to where exist high CO2 such as ventilating outlets or fireplaces.

ERROR CODE AND SOLUTIONS

? Can’t power on
Check whether the adaptor is well plugged.

WARRANTY & RETURN AUTHORIZATION

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. Proof of purchase is required for warranty repairs. Warranty is void if the meter has been opened.
Authorization must be obtained from the supplier before returning items for any reason. When requiring a RA (Return Authorization), please include data regarding the defective reason, the meters are to be returned along with good packing to prevent any damage in delivery and insured against possible damage or loss.

FAMILY PRODUCTS

Other related CO2 products:

• Portable:
  Model 7752, 77532, 7755, 77535, 77596 and 77597 portable CO2/RH/Temp. meter

• Wall mount
  Model 7721,77231,7722,77232,7729,7530 Wall mount CO2/RH/Temp. meter

• Desktop:
  Model 7787, 7788and 7798 desktop CO2/RH/Temp. meter

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