Extech SD800 Operating Manual
User's Guide
CO2/Humidity/Temperature Datalogger
Model SD800
Introduction
Congratulations on your purchase of the Extech SD800 CO2/Temperature/Humidity
Datalogger. This meter measures, displays, and stores CO
humidity readings. Data is stored on a SD card for transfer to a PC. This meter is shipped
fully tested and calibrated and, with proper use, will provide years of reliable service
, temperature and relative
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Features
• LCD simultaneously displays Carbon Dioxide, Temperature and Relative Humidity
• Datalogger date/time stamps and stores readings on an SD card in Excel® format for
easy transfer to a PC
• Selectable data sampling rate: 5, 10, 30, 60, 120, 300, 600 seconds
Product Description
1. Humidity/Temperature Sensor
2. Humidity Display
3. Temperature Display
4. CO2 Display
5. LOG (ENTER) button
6. SET button
7. AC adaptor socket
8. CO2 probe socket
9. ▲(TIME) button
10. ▼ button
11. Reset button
12. RS-232 output
13. SD memory card socket
14. CO
15. CO
Note: Battery Compartment and Tilt Stand are located on the back of the meter.
probe
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plug
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12
13
1
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4
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Operation
Setup
1. Connect the CO
the bottom of the datalogger.
2. Connect the AC adaptor to the datalogger by inserting the plug into the connector on
the bottom of the datalogger.
3. Insert the 6 AAA batteries into the battery compartment. Without these batteries
installed, the real time clock will reset every time the ac adaptor is disconnected.
Datalogging
1. Open the left side door and insert a formatted SD card
Note: The SD card should be at least 1GB in capacity (4GB to 16GB recommended)
Note: Do not use memory cards formatted by other meters or cameras. Use the SD
card formatting procedure under the advanced features section of this manual
to correctly format the card.
Note: The internal clock must be set to the correct time See the advanced features
section of this manual to set the clock.
Note: The default data structure uses a decimal point “.” as the numeric decimal
indicator. See the advanced features section of this manual to change this to a
comma “,”.
Note: If the SD memory card is not installed, “EMPTY” will appear in the display
Note: Displayed error messages:
CHCArd
probe to the datalogger by inserting the plug into the connector on
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The memory card is full or there is a problem with the card
LobAt
No
CArd
2. Press the LOGGER button for >2 seconds to begin logging. “DATALOGGER” will
appear in the display and the meter will beep each time the data is recorded (if the
beeper is enabled).
3. To stop datalogging, press the LOGGER button for >2 seconds. “DATALOGGER” will
change to “DATA” and the meter will count down through the recorded data.
NOTE: To avoid corrupting data, do not remove the memory card without properly
ending the record function.
Time/Date/Sample Rate Check
Press and Hold the TIME button for >2 seconds and the display will cycle through the date,
time and sample rate information.
The battery is low.
The SD card is not inserted
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