Instrument Description Teledyne API Ultrafine Particle Monitor - Model 651
36 07506C DCN6727
Status Messages Status messages display at the top of the home screen. The
indicators are as follows:
Status Indicator Description
Low Water Water level is low
Warmup Instrument is warming up
Laser Fault Laser fault
Inlet Pressure Fault Inlet pressure is too high/low
Vacuum Fault Vacuum pressure is too high/low
Nozzle Fault Plugged nozzle or wet sample flow filter
Absolute Pressure Fault Barometric pressure is out of range
Optics Temp Fault Optics temperature is out of range
Growth Tube Temp Fault Growth Tube temperature is out of range
Conditioner Temp Fault Conditioner temperature is out of range
Separator Temp Fault Water Separator temperature is out of range
Pulse Height Fault Low particle pulse height
Ready Warm-up process has finished and the
instrument is ready for use
Note: The status messages on the front-panel display either indicate
that the instrument is warming up or that there is a problem
with the instrument. However, only one indicator can display
at a time. Check the Status screen for more details about
potential problems.
Indicator Light The blue indicator light on the front panel flashes once for each
particle detected. At particle concentrations >100 particles/cm3, the
flashing becomes a continuous glow.