Teledyne 651 User Manual

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Teledyne API Ultrafine Particle Monitor - Model 651 
Instrument Description 
07506C DCN6727 
41 
 
The pulse output is a way to get raw particle count information. 
This information is also available through serial command. Using 
the SM or SSTART,3 command, described in 
Appendix B
, you can 
read raw, uncorrected, particle counts. TAPI recommends using the 
serial interfaces for raw counts rather than the pulse output 
because then all the information used to calculate the corrected 
concentration is communicated and there are no issues with the 
monitor’s ability to accurately count the pulses. 
Ethernet Communication Port 
Instrument status, including particle concentration, of the Model 
651 can be monitored remotely from a local area network or over 
the internet using the Ethernet communication port.