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Page 10 

 

 

G

ENERAL FEATURES

 

6.1 Operating principles 

 

6.1.1

 

The 

Always on

 principle 

The FDL Mini 

is “Always on” meaning that w

henever it has power (from external supply or 

internal battery) and the “

Off-dongle

” is not connected, it will log data using the settings last 

specified by the user.  
 

6.1.2

 

File creation 

The FDL Mini will keep logging data to a file until a new file is created. A new file is created 
when:  

 

The FDL Mini 

is switched off and turned on again (e.g. mounting the “

Off-dongle

 for 

5 seconds and removing it again. Wait 30 seconds before connecting to a PC) 

 

The internal time setting of the FDL Mini is changed 

 

The FDL Mini sampling rate is changed 

 

STOX support is either enabled or disabled for one of the data channels  

 

6.1.3

 

Download of data 

The data can be downloaded at any time from the FDL Mini using the SensorTrace Logger 
software. Downloading data will not interrupt the data logging process. The FDL Mini will 
continue to store data in the same file and append it to the data that are already stored. 
Therefore, when data is downloaded at the end of a deployment the file will contain all data 
from that deployment. Downloading data during a deployment can be used as a sneak peek 
to see how things are going. 
 

6.1.4

 

Data calibration 

Data are recorded uncalibrated in the FDL Mini. Calibration is performed after download of 
data to the SensorTrace Logger. Each sensor must be calibrated before or after the 
deployment. This calibration is imported into the data file retrieved from the FDL Mini and 
applied to the data retrieved from the FDL Mini.  
 

6.2 Support for STOX sensors 

Sensor channels with built-in amplifiers support the use of STOX sensors for measuring 
extremely low O

2

 concentrations. The timing and the polarization for the on/off cycles of 

the front guard can be set individually for each channel. The data file will contain both the 
signal for oxygen concentration and a signal indicating whether the front guard polarization 
is on or off.  
 

6.3 Sensor connections 

At the time of ordering it is decided for each channel whether the amplifier is internal or 
external. With internal amplifier the sensor is mounted directly on the bulk-head connector 

Содержание Mini

Страница 1: ...Field Datalogger Mini Manual Field Datalogger Mini October 2018 docx...

Страница 2: ...l features 10 6 1 Operating principles 10 6 1 1 The Always on principle 10 6 1 2 File creation 10 6 1 3 Download of data 10 6 1 4 Data calibration 10 6 2 Support for STOX sensors 10 6 3 Sensor connect...

Страница 3: ...with built in amplifier 17 7 4 2 Channel with external in situ amplifier 17 7 5 Downloading data to PC 17 7 5 1 File size and download time 18 7 6 Calibration 18 7 6 1 Calibration of the sensors 18 7...

Страница 4: ...se or the inability to use this product 1 3 Repair or adjustment Equipment that is not covered by the warranty will if possible be repaired by Unisense A S with appropriate charges paid by the custome...

Страница 5: ...fy reverse engineer disassemble or de compile all or any part of the software or rent lease distribute or sell the software The Customer shall however be entitled to make one copy of the software for...

Страница 6: ...dditional products or if you encounter any problems and need scientific technical assistance please do not hesitate to contact our sales and support team We will respond to your inquiry within one wor...

Страница 7: ...ation of the front guard is collected together with the signal for O2 concentration The FDL Mini may be integrated with other platforms It may be powered from a CTD or ADV or other source using a 6 28...

Страница 8: ...ini external features Two channel left and four channel right FDL Mini seen from the sensor end These dataloggers are with built in amplifiers FDL Mini with Off dongle and dummy mounted at the non sen...

Страница 9: ...13 Ah 7 4 V Deployment up to 3 months 25 C Not included to be ordered separately Unisense in situ microsensors Connectors for in situ microsensors In situ amplifiers with cable one for each channel w...

Страница 10: ...data that are already stored Therefore when data is downloaded at the end of a deployment the file will contain all data from that deployment Downloading data during a deployment can be used as a sne...

Страница 11: ...e seen in the Unisense Logger software See 7 3 4 Checking battery level and storage capacity 6 6 Computer connection The PC communication cable MDL COM001 connected to the communications bulkhead conn...

Страница 12: ...for connecting the FDL Mini with external units are ordered separately 7 WORKING WITH THE FIELD DATALOGGER MINI 7 1 Connecting the Field DataLogger Mini to a PC The FDL Mini is connected to a USB por...

Страница 13: ...rization must be set correctly and individually for each channel Wrong polarization may destroy the sensor The correct polarization for each type of sensor is found in the sensor manual Open the Senso...

Страница 14: ...create a new logging file in the FDL Mini 7 3 2 Setting sampling rate Right click one of the channels and select Device settings In the window that opens you may select the datalogging frequency for t...

Страница 15: ...he Set button to set the instrument time to the date and time displayed in the New time box Click the Synchronize button to set the instrument time to the current date and time of the connected PC NOT...

Страница 16: ...ltage range for the amplifier Select the smallest range possible to get the most out of the resolution of the amplifier matching the expected signal range of the sensors It is recommended not to selec...

Страница 17: ...housing The sensor needs to be mounted on an In Situ Connector which is then connected to the In Situ Amplifier See separate manuals for this http www unisense com manuals Note Most microsensors requi...

Страница 18: ...stored in the Logger file on the PC and not on the FDL Mini which will only store raw data After downloading a file from the FDL Mini data must be calibrated in Logger using an already stored calibra...

Страница 19: ...and are applied to the FDL Mini datafile after logging is completed Open the data file in Logger using File Open dialog Make the dataset active by double clicking the appropriate experiment name in th...

Страница 20: ...ata file into Logger Double click the relevant experiment in the Experiment overview window to the left Select the data tab name identical to the Experiment name Click the Export button Choose the fil...

Страница 21: ...sor is sensitive to temperature and calibration should be done at the same temperature as the measurements If temperature varies during the deployment the calibration should be done at both the highes...

Страница 22: ...y o See 7 3 4 Checking battery level and storage capacity For each channel set the correct polarization voltage for the sensor to be connected o See 7 3 1 Setting polarization Set the Sampling rate o...

Страница 23: ...ftware Consult the Logger part of the SensorTrace Suite manual http www unisense com manuals for details on how to log data directly on a PC Note that the delivery of data from the FDL Mini to the PC...

Страница 24: ...www unisense com info unisense com...

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