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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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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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SD Card Data Structure
1. When the SD card if first inserted into the datalogger the folder CHA01 is created.
2. The first datalogging session will then create a file CHA01001.XLS. All data will be
saved to this file until the number of columns reaches 30,000.
3. After 30, 000 columns a new file, CHA01002.XLS is created. This is repeated every
30,000 columns until CHA01099.XLS. At this point a new folder, CHA02 is created
and the process is repeated. CHA10 is the final folder.
Transferring Data to a PC
1. Remove the memory card from the datalogger and plug it into the SD card slot on the
PC.
2. Launch Excel® and open the data file on the memory card from within the
spreadsheet program. The file will appear similar to the figure below.
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Advanced Settings
The SET function is used to accomplish the following:
• Format the SD memory card
• Set the date and time
• Set the sampling time
• Set the beeper sound ON/OFF
• Set the SD card Decimal character
• Select the Temperature units
• Set the RS232 data output ON/OFF
• Set CO
• Set CO
height compensation in meters
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height compensation in feet
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1. Press and Hold the SET button for >2 seconds to enter the setting mode. The first
function (Sd F) will appear in the display. Press the SET button to step through the
seven functions. Use the ▲ and ▼ buttons to adjust the selected function. Use the
“LOGGER” button to step through fields within a function. In the SET mode, if no
button is pressed within 5 seconds the logger will revert to the standard mode.
2. Sd F – Format the SD card. Press the ▲ button to select yES or no. For yES, press
the Enter button to format the card and erase all existing data.
3. dAtE – Set the date and time. Press the ▲ or ▼ buttons to adjust the selected field.
Press the Enter button to store the value and to step through the various fields.
4. SP-t – Set the sample rate. Press the ▲ button to select the desired sample rate and
press Enter to store the selection. The selections are: 5, 10, 30, 60, 120, 300, 600
seconds and AUTO. In AUTO, the data will be stored every time there is a
temperature change of >1 degree, > 1 %RH or > 50 ppm.
5. bEEP - Set the beeper ON or OFF. Press the ▲ button to select ON or OFF and
press Enter to store the selection.
6. dEC - Set the SD card Decimal character. Press the ▲ button to select USA
(decimal) or Euro (comma) and press Enter to store the selection.
7. t-CF - Set the Temp. unit to °F or °C
8. rS232 - Set the RS232 data output ON/OFF. Press the ▲ button to select ON or off
and press Enter to store the selection
9. HIgh- – Set the height compensation for CO
in meters. Press the ▲ or ▼ buttons to
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adjust the selected field to the height (altitude) of the measurement site. This
adjustment will improve measurement accuracy.
10. HIghF - Set the height compensation for CO
in feet. Press the ▲ or ▼ buttons to
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adjust the selected field to the height (altitude) of the measurement site. This
adjustment will improve measurement accuracy.
11. ESC – Exit the setting mode. Press the SET button to return to normal operation.
System RESET
If a condition appears where the CPU does not respond to keystrokes or the meter seems
frozen, press the RESET button on the side of the datalogger (use a paper clip or similar
pointed object) to return the meter to a working state.
RS232 Interface
A serial output is provided to link the meter to a PC’s serial port. Call Technical Assistance
for more information on this interface.
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Battery Warning, Installation and Replacement
1. When the AC adaptor is not connected and the
display, the batteries are weak and should be replaced. To replace or install batteries,
remove the Philips head screw that secures the rear battery cover and lift off the
cover.
2. Replace the six AAA batteries (use alkaline heavy duty type), observing polarity
3. Replace and secure the cover.
4.
You, as the end user, are legally bound (EU Battery ordinance) to return all
used batteries, disposal in the household garbage is prohibited! You can
hand over your used batteries / accumulators at collection points in your
community or wherever batteries / accumulators are sold!
Disposal: Follow the valid legal stipulations in respect of the disposal of the
device at the end of its lifecycle
low battery icon appears in the
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Specifications
Display 60 x 50 mm (2.4 x 2.0”) LCD
Measurement sensors Temperature: Internal sensor
Relative Humidity: Precision capacitance type
CO
Response Time <2 min to 63% of final reading typical
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Memory Card SD memory card, 1 GB to 16 GB.
Datalogger Sampling Time 5/10/30/60/120/300/600 seconds or Auto.
Temperature Compensation Automatic
Display update rate Approx. 1 second
Data Output RS 232
Operating Temperature 0 to 50°C (32 to 122°F)
Operating Humidity Less than 90% RH
Power Supply 9V AC adaptor.
Weight Meter: 240 g (0.53lbs.). Probe 158g (0.35lb)
Dimension Meter: 132 x 80 x 32mm (5.2 x 3.1 x 1.3”)
Range Resolution Accuracy
Temperature
0.0 to 50.0 °C 0.1°C ± 0.8°C
32.0 to 122.0°F 0.1°F ± 1.8°F
Relative Humidity
10 to 70%
70 to 90% ± (4% of reading + 1% RH)
CO
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≤1000ppm
>1000 to ≤3000ppm: ± 5% of reading
>3000ppm ±250ppm typical
CO
: NDIR
2
Six (6) AAA (UM4) 1.5 V batteries for clock backup
Probe: 132 x 38 x 32mm (5.2 x 1.5 x 1.3”)
0.1%
± 4% RH
± 40ppm
1ppm
Note: Above specification tests under the environment RF Field Strength less than 3 V/M &
frequency less than 30 MHz only.
Copyright © 2010 Extech Instruments Corporation (a FLIR company)
All rights reserved including the right of reproduction in whole or in part in any form.
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99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
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