Computer Interface, Commands, and Data Collection

Teledyne API Ultrafine Particle Monitor - Model 651

Notes: Data records written to the flash drive are also echoed out of the Ethernet interface on the Telnet socket. This allows redundant external data collection to be performed with the Ethernet connection while data is being collected by the flash drive.

You cannot change the SAMPLE TIME while data is being logged - you must stop logging data first.

4.Press STOP to discontinue data logging at any time.

Note: Do not remove the Flash drive while logging data.

Do not restart data logging or go beyond 99 files. If you do, data files may be overwritten.

5.Remove the Flash drive and connect it to a computer to download the data.

Flash Memory Data Files

The data is stored in files with the "dat" extension and a new file is created either every day or every hour (depending upon the Logging selection you have made). If you stop data collection at any time, the current data file is saved even if it contains less than one hour/day of data.

Every time a new run is started, a unique file is created. Each data file has the following format:

Filename

yymmddxx, where yy is the year (no leading zero), mm is the

 

month (1-12), dd is the day of the month, and xx is a sequence

 

number for the day (01-99). Example: 9110601.DAT where 9

 

is the Year, 11 is the month, 06 is the day, 01 is the file

 

number and .DAT is the extension.

LINE 1

“TSI CPC DATA VERSION 3”

LINE 2

Time stamp for the file: yy/mm/dd,hh:mm:ss where yy is the

 

year, mm is the month, dd is the day of the month, hh is the

 

hours, mm the minutes, and ss the seconds

LINE 3

Data average period (sample time intervals) in seconds.

LINE 4

Dead-time correction factor, flow calibration constant (mL/min).

LINE 5

Instrument model number, firmware version number, serial

 

number

LINE 6

Header descriptions.

LINE 7

First data record.

LINE 8

Second data record.

LINE X

Last data record.

70

07506C DCN6727

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Teledyne 651 operation manual Flash Memory Data Files, Line