AZ 77294 CO2 Humidity Temperature Wall Mount Desktop Data Logger Instruction Manual

AZ 77294 CO2 Humidity Temperature Wall Mount Desktop Data Logger

Specifications

• Model: 77294
• Type: CO2, Humidity, Temperature Wall Mount/Desktop Datalogger
• Power Input: 5VDC
• Interface: USB Type-C
• Logging Capacity: 12000 times

QUICK GUIDE

INTRODUCTION

This is an accurate, fast, smart, and easy-to-use air quality datalogger. In addition to measuring the CO2 concentration, it also displays the hazardous level and monitors ambient temperature and relative humidity. This monitor not only provides instant value but also record measurement for future check.

Features

• Large LED displays CO2 value, humidity, and temperature.
• 12000 times auto logging. USB2.0 plug and play. No need to operate through specific software.
• Wall mount display with the 3-color light bar to provide hazardous level indicator from a far distance
• Touch panel to program the setting
• NDIR (non-dispersive infrared) waveguide CO2 technology
• 3-color lightbar (green/yellow/red) gradually changes color for CO2 concentration.
• CO2 automatic background calibration(called ABC) for long-time drift compensation
• The buzzer alarm function is included
• Areas of application: Widely used in office buildings, schools, exhibition halls, shopping malls, meeting rooms, fitness centers, restaurants, and other public places where energy cost, personal comfort, and health are important.

MATERIAL SUPPLIED

The standard package contains below:

• CO2 Datalogger x 1pc
• USB-C cable x 1pc

NOTE: provided USB-C cable is for both data transfer and power charging.

• Operation manual x 1pc
• Sticker & Screws for wall mount hanging x 1 pack

POWER UP
This meter is designed for wall mount & desktop use. It is powered up by 5VDC through a USB-C cable. For mobility, you may also use a power bank for temporary use. Once the meter is powered, the LED will auto turn on.

CAUTION

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

DISPLAY, KEYPAD, SPECIFICATION

1. CO2 concentration, parts per million (ppm). NDIR CO2 sensor, display up to 9999ppm
2. Ambient temperature. “C/F switchable. Range -10.0-60.0C (14.0-140.0F)
3. Relative humidity. Range 0.1-99.9%RH
4. 12000 times record auto logging function
5. C02 alarm buzzer. The buzzer is defaulted as OFF and can be activated through the keypad
6. Three-color light bar. The status of measured CO2. Default: <800ppm 800~1000pm> 1000ppr

SET

• Setting modes. Long press to enter setting mode

MUTE /+

• While buzzing mode, prost real value

• Press a longer time to start or stop logging

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 the device.

3. After powering on, the LED counts down for 10 seconds during warm-up.

4. The device will start to measure CO2 concentration, ambient temperature, and relative humidity after warm-up.

5. Suggest to power on for at least 30 minutes before using the logging function.

6. Light bar:
   Besides the value display, this meter is also equipped with a programmable light bar color feature.
   There are 3 different light bar colors for CO2: Green, Yellow, and Red. The color auto switches according to the measured value. Yellow color will be skipped if the red light setting is identical to yellow

   • From Green turns into Yellow:  Adjustable from 700 to 3000 (default as 800)
   • Yellow turns into flashing Red: Adjustable from 700 to 3000 (default as 1000)

7. Buzzer & How to turn off buzzer:
   The buzzer function is default OFF in case of use in quiet places. It is required to activate the buzzer function in setting mode while an audible alarm is needed. While the buzzer is activated and measured CO2 is over the alarm threshold, the buzzer sounds once a second till pressing the “MUTE” key to stop.

8. Setting:
   Long pressing the “SET” key to enter the settings. Then press the “SET” key to select setting modes in sequence: AL (CO2 Alarm color), Unit (temperature unit), Buzzer, and ABC (auto background calibration). and bL (Brightness of light bar),
   Press the” + ” key to adjust the parameters.
   Note: During the setting process, the device will return to the main screen after 25 sec of idle time.

   • Alarm (AL): For CO2, green turns into yellow, adjustable from 700ppm to 3,000ppm, default 800. Yellow turns into red, adjustable from 700 to 3000ppm, default 1000. Red should be larger than yellow, yellow color will be skipped if the red light setting is intentionally identical to yellow. Interval is 100ppm. This red light threshold is related to the buzzer alarm trigger and red light bar trigger.
     To adjust the alarm threshold value, Press the “+” key.

   • Temperature unit: Press “+” to switch between °C and °F

   • Buzzer activation: Buzzer is default OFF for use in quiet places. Press “+” to turn it to ON.

   • CO2 ABC function: ABC means the lowest measured CO2 value in the past 7 days will be used as 400ppm to auto-calibrate the CO2 sensor to reduce the long-term drift. It is defaulted as ON. However, it is not suggested to turn on the ABC feature in hospitals, houses, wineries or any less-ventilated places where CO2 has no chance to get low. Press “+” to switch between ON and OFF.

   • Brightness of light bar (bLt): The brightness of the light bar is adjustable. From off to strong is 0 to 10, O is turned off and 10 is the strongest. Default as 6. Press “+” to adjust the brightness of the light bar to fit your needs. Though the light bar might be set to off, it will still blink at the weakest level 1 brightness while the measured CO2 is higher than the alarm threshold.

9. Data logging
   In addition to being a real-time monitor, you can also set up a recording sampling rate per your need to log the measured value and download the data later for future analysis use.
   Before operating this function, strongly suggest powering on the device for 30 minutes.
   Plug the USB port to any Windows O/S computer, it is plug and play, no need to install specific software ahead.The computer will recognize the logger as a CD-ROM and pop up a new screen for configuration. If not, you may go to file management to click a recognized CR-ROM called “PDF Logger “

   • Double-click “Logger configuration tool” to set up the logger. The logger configuration screen offers 8 languages to help you set up easily. The programmable parameters are sampling rate, start delay time, and Logger ID.
     

   • The programmable sampling rate is from 1 min to 2 hours.

   • The start delay time is from 0 min to 12 hours. By choosing 5 mins, it means the first record will be taken into the memory file 5 mins after you press the start key.

   • Logger ID is a 4-digit number you can use to give each logger a unique property code, such as 0928.

   • After setting, click “Save” to synchronize the setting and your PC time zone to this datalogger.

   • Finally, close the setup screen and disconnect the logger from the computer. Within 30 minutes, Install the logger to the place where you want to monitor and record the indoor air quality.

   • Long press the “Start” key to activate the logger till the “REC” LED flashes. If the logger is programmed with a start delay of 5 minutes, the “REC” LED will consistently display and then turn into flashing after 5 minutes.

   • To stop recording before memory is full, press the “STOP” key longer time till the “REC” LED goes off. There are 12000 records in memory. While memory is full, the FULL icon will appear on display to remind the user.

   • Connect to the computer to read out. The procedure is the same as connecting to setup.

   • Click the “Data Download” button on the setup screen and choose where to save the logged file.

   • The read-out csv report can be opened by Windows Excel.

The saved report contains:
Configuration Time, Start Time, Start delay, Sampling rate, ID no. and Total records number.

Each record contains Date and time, CO2, TA and RH(%)

MAINTENANCE

CO2 CALIBRATION

• The meter is calibrated at standard 400ppm CO2 concentration in the factory. While you turn on the meter for the first time, simply leave it in fresh air condition to check if it is within specification. If it is, no need to do re-calibration.
• Nevertheless, you may still do either ABC or manual calibration regularly to maintain good accuracy.
• Press the “ SET” + “+” keys at the same time till “CAL” is flashing. Long pressing the “SET” key to start the calibration. During the calibration, “CAL” will flash on display with a 300-second count down. After 5 minutes of counting down, the display returns to normal measuring mode to indicate the calibration is done.
• During the calibration procedure, long pressing the “+” key can quit the calibration function.

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

ERROR CODE AND SOLUTIONS

Can’t power on
Check whether the adaptor is well plugged and the 5VDC power supply is working.

Unexpected or expected blackout

• While the meter is programmed to record data, once the logging is started, a blackout will cause the logging function to stop. “Stop” and real-time CO2 values will appear in turns.
• Please return to the computer to download data and re-program again.

WARRANTY

WARRANTY & RETURN AUTHORIZATION
The meter is warranted to be free from defects in material and workmanship for 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. The 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:
  • a. Model 7752, 7755, 77532, 77535 Temp./CO2 /RH meter
  • b. Model 77596 portable CO/CO2/Temp. Logger. high performance
  • c. Model 77597 portable CO/CO2/RH/Temp. Logger. high performance
• Wall mount
  • a. Model 7710 PM2.5/CO2/RH/T datalogger
  • b.Model 7729 CO2/RH/T monitor
  • c. Model 7721/7722/77231/772332 wall mount Temp./CO2 /RH meter
  • d. Model 7530 Wall mount CO2 controller.
  • e. Model 7730 hard wired CO2/RH/T monitor
• Desktop:
  • a. Model 7787/7788 deskop Temp./RH/CO2 meter, general purpose.
  • b. Model 7798 desktop Temp./RH/CO2 Logger, with relay.
  • c. Model 7727 deskop Temp./RH/CO2 7 backlight meter.

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