9 SDL550-EU-EN V1.4 3/14
Automatic Datalogging
In automatic datalogging mode the meter takes and stores a reading at a user-specified sampling
rate onto an SD memory card. The meter defaults to a sampling rate of two seconds. To change the
sampling rate, refer to the Setup Mode section (the sampling rate cannot be ‘0’ for automatic
datalogging):
1. Select the sampling rate in the Setup Mode to a value other than zero.
2. Press and hold the LOG button for at least 1.5 seconds. The meter will flash the REC icon at the
selected sampling rate indicating that readings are now being automatically recorded to the SD
card. The LOG display icon will appear on the secondary (lower) LCD display digits.
3. If a card is not inserted, the meter will display "Sd","-E-" If a card is defective, the meter will
display " ScAn "," Sd ".
4. Pause the datalogger by pressing the LOG button momentarily. The REC icon will stop flashing
and the sample rate will display for a short time. To resume logging simply press the LOG
button again momentarily.
5. To terminate the datalogging session press and hold the LOG button for at least 1.5 seconds.
6. When an SD card is used for the first time a folder is created on the card and named HTB01. Up
to 99 spreadsheet documents (each with 30,000 readings) can be stored in this folder.
7. When datalogging begins a new spreadsheet document named HTB01001.xls is created on the
SD card in the HTB01 folder. The data recorded will be placed in the HTB01001.xls document
until 30,000 readings are reached.
8. If the measurement session exceeds 30,000 readings, a new document will be created
(HTB01002.xls) where another 30,000 readings can be stored. This method continues for up to
99 documents, after which another folder is created (HTB02) where another 99 spreadsheet
documents can be stored. This process continues in this same fashion with folders HTB03
through HTB10 (last allowable folder).
SD Data Card to PC Data Transfer
1. Complete a datalogging session as detailed in above in the previous sections. Hint: For the first
few tests, simply record a small amount of test data. This is to ensure that the datalogging
process is well understood before committing to critical, large scale datalogging.
2. With the meter switched OFF, remove the SD Card.
3. Plug the SD Card directly into a PC SD card reader. If the PC does not have an SD card slot,
use an SD card adaptor (available at most outlets where computer accessories are sold).
4. Power the PC and run a spreadsheet software program. Open the saved documents in the
spreadsheet software program (see example spreadsheet data screen below).
Spreadsheet data example
