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How to use the Reed SD-9901 Air Quality Detector.
Operating instructions
This Reed SD-9901 Air Quality Datalogger are able to operate with three probes plugged in simultaneously. These probes are: the Humidity, CO2, and either the O2 or the CO Probe. During the operations the meter will datalog all three values and will display on the meter’s LCD only one at a time. To start using the meter plug in the Humidity, CO2, and either the O2 or the CO Probe into the sockets. Turn on the meter by pressing the Power Button. To turn the meter off, hold the Power Button for over 2 seconds. Press the Function Button to scroll through the measuring functions:
- rH: Humidity/Temperature
- dP: Dew point Temperature
- _ET: Wet bulb Temperature
- CO: CO/Temperature
- O2: O2/Temperature
- CO2: CO2/Temperature
The selected measurement function will be saved as the default.
How to use Data hold function
During the measurements, the Reed SD-9901 Air Quality Detector are able to hold on the screen the measured value. For using that, just press the Hold Button once and a HOLD symbol will appear on the Display. Press the Hold Button once again will release the data hold function.
How to use Data Record (Max., Min. reading)
The data record function records the maximum and minimum readings. Press the REC Button once to start the Data Record function and a “REC” symbol will appear on the display. With the “REC” symbol on the display. Press the REC Button once, and a ”REC. MAX.” symbol along with the maximum value will appear on the display. Press the REC Button again, and a “REC. MIN.” symbol along with the minimum value will appear on the display. To delete the minimum value, press the Hold Button once, and the display will show a “REC.” symbol only and execute the memory function continuously.
REED SD-9901 Specifications
Circuit: Custom microprocessor LSI circuit
Display: 52mm x 38mm LCD with backlight
Auto Sampling Time: 2 seconds to 8 hours
Memory Card: SD memory card, 1 GB to 16 GB
Data Output: USB/RS232 PC computer interface
Sampling Time: Approx. 1 second
Operating Temperature: 0-50°C (0-122°F)
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