Clas Ohlson ST-171, Manual

6

7

English

7. Viewing results of measurements

Collecting data

A.  If you selected 

Instant

 in “Basic Settings” data starts collecting as soon as 

you have clicked on “SETUP”.

B.  If you chose 

Manual

 in “Basic Settings” your data logger must be started manually by 

pressing the yellow button on the data logger. Both LEDs flash one at the same time when 
the Data logger starts.

N.B.

 A green double flash every ten seconds indicates that the manual start has been activated 

in the software but the data logger has not started. In that position, no data is stored. The data 
logger must be started manually by pressing the yellow button.
The data logger will save data as many times as have been set under “Sample Points”. 
The green LED “REC” flashes once each time a measurement is made.

Transferring saved measurement data from data logger to PC

1.  Connect the data logger to the same USB-port it was connected to during the installation.
2.  Double-click on the Datalogger Graph icon on “Desktop” to start the software.
3.  Click on “Download” to retrieve saved data from the data logger to PC. (Fig. 8)
4.  When the transfer is complete the boxes “Save” and “View” appear.

Save (Fig. 9)

Enter a file name and the name of the folder where the file is to be saved. Then click on “Save” 
to save. The file is saved initially in REC-format. The saved file can later be saved as Text file 
(

txt

), bit map (

bmp

) or excel file (

xls

).

View (Fig. 10)

Click on 

View

 to view saved data graphically. The number of measurements is shown 

(in the example here 382 measurements).

The saved temperature and relative humidity (and dew point) readings are shown graphically. 
The specified alarm limits also appear if Alarm is activated in the box 

LEDs flash…

 (Fig. 11)

Move the cursor into the diagram and drag the blue line to the desired time. The time reading 
appears in red text under the diagram. In the present example, the temperature was 21.4 ºC, 
the dew point (DP) 9.0 and the relative humidity (RH) 45.2 %. (Fig. 12)
If you wish to save data for a certain time, 
there is a zoom-function. Use the mouse 
pointer for “Drag and release” in the dia-
gram to enlarge the desired time.
Return to normal viewing by clicking on 

View >View All.