B-4
Model 3786 Ultrafine Water-based Condensation Particle Counter
S e t C o m m a n d s
These commands are used to set instrument parameters, data
collection modes, and water handling modes. When set commands
are issued without a parameter, the return response is the current
setting of the parameter or mode. The Set commands will cause
interruptions in data reporting, so execution of these commands
during the data collection process is not recommended. The
primary Set command intended for user control of data collection is
SM (Set Mode) command.
C a u t i o n
The use of Set commands other than the SM can adversely affect the
calibration of the instrument, and possible damage. Use extreme care
when executing Set commands.
SAS
S
et
A
bsolute Pressure
S
cale Factor
This command is used to calibrate the absolute pressure sensor. The supplied
parameter is stored internally as a gain factor. The nominal value for the parameter is
1000.
Command:
SAS,x
Set Absolute pressure sensor scale factor (500 to 1500)
Response:
OK
Example:
SAS,1020
Command
OK
Response
SAS
Command
1020
Response - echoing current value of 40 millivolts
SD
S
et
D
ryer
This command allows the dryer to be turned on or off. The dryer is on by default upon
power-up.
Command:
SD,x
Command to set dryer on or off
x = 0 turns dryer off, x = 1 turns dryer on
Response:
OK
Response
Example:
SD,0
Command turns dryer off
OK
Response
SD
Command to read back the current setting
0
Response indicates dryer is off
