Accredited calibration/NIST traceable calibration certificate for REED R9900 Indoor Air Quality Meter might be available on request (for an extra charge). Please contact us for more info.
The R9900 is a Reed precision Indoor Air Quality Meter used to measure carbon dioxide in the same time with relative humidity and temperature. The Reed R9900 CO2 Level Detector can do Dew point and wet bulb temperature measurements and displays both STEL and TWA readings. Thanks to its very good response time and its low drift, non-dispersive infrared CO2 sensor, Reed R9900 assures excellent performance and accuracy in various applications including indoor air quality monitoring and surveillance.
Warm-Up the instrument
When powering on, this Indoor Air Quality Meter will beep and starts to warm-up for 30 seconds. After this time the instrument will enter into the normal-measuring mode and will show the current CO2, temperature, and humidity readings on its LCD display. The meter will update the values for every second.
Using the Data Hold function
Sometimes, during the measurements you need to hold on the readings of CO2. Using the Data Hold function this Reed Indoor Air Quality Meter will keep on the display the CO2 values. Activate this by pressing the “HOLD” button. The “HOLD” symbol on the LCD will indicate the function is activated.
Max, Min, & Weighted Averages
When the instrument turns into MIN and MAX modes, the LCD will show the minimum and maximum readings of CO2 on the main display and of the readings on the lower displays. To show the weighted average of CO2 readings for the past 15 minutes use the STEL mode. Thanks to its Averages function the Reed R9900 CO2 Level Detector are also able to show the average of CO2 reading for the past 8 hours (TWA mode). The lower displays will continue to measure normally. Note that the instrument needs at leas 5 minutes to calculate STEL and TWA.
C02 concentrations alarm function
This meter features an audible alarm when CO2 concentrations exceed a set limit. To set-up the alarm, press and hold the “SET” button for two seconds. “AL” and P1.0 will appear on the LCD. Press the “ENTER” button to modify the alarm setting.
To change the temperature scale from °C to °F, press and hold the “SET” button for 2 seconds. Press the “DOWN” button and “Unit” and P3.0 will appear on the LCD. Press the “ENTER” button, and modify the temperature unit by pressing the “UP” or “DOWN” buttons. Press the “ENTER” button to save the setting, or press the “ESC” button to cancel.
Depends on your needs, you can have the LCD of the insrument backlighted. Hold down the “BACKLIGHT” button for a second to activate and to cancel the backlight function.
As a canadian distributor of REED Instruments products we stock most of these Gas Detectors for same day shipping. To enquire on the REED R9900 Indoor Air Quality Meter availability and current list price please contact us.