Teledyne API Ultrafine Particle Monitor - Model 651 APPENDIX A Firmware Commands
07506C DCN6727 A-17
D Record D records contain the following information:
D Record identifier
Date Date in yyyy/mm/dd format
Time Time in hh:mm:ss format
Flags Status Flags (see information in RIE command description)
Conc Aggregated concentration calculated by dividing the
accumulated aggregate counts by the live-time of the
sample flow rate (2 cm3/sec). The aggregated counts and
live-times are accumulated each 1/10th second interval.
The overflow flag is set when the concentration value
exceeds the maximum specified concentration.
AT Elapsed sample time 0.1 sec resolution (0.1 to 3600)
LT Live time 0.001 sec resolution (0.001 to 3600)
CNT Accumulated particle counts
Photo Average photo-detector value in mV
Reserved Blank reserved space
PH Average pulse height in mV
PSTD Pulse height standard deviation
Example D Record:
D,2012/11/2,08:01:21,0,1.04e4,6.0,4.4,769424,140,,0,0
Record Type Date Time Flags Conc AT LT CNT Photo PH PSTD
D 2012/11/2 08:01:21 0 1.04e4 6.0 4.4 769424 140 0 0