PPCH-G™ OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company
Page 106
PSF
Purpose
Set a new target pressure, using a fast fixed rate and aborting pressure control once the
target
is reached.
Command “PSF
n
”
Classic “PSF=
n
”
Arguments
N:
The target pressure in the current pressure unit.
Remarks
The PPCH-G sets the given target pressure using a rate of 2 % FS/sec, and stops controlling
as the pressure approaches the given target. The system does not attempt to maintain the
target pressure.
The “PR?”, “PRR?”, “STAT?”, or “SR?” program message queries can be used to monitor the
progress of the generation.
Example
(enhanced)
Cmd sent:
Reply:
“PSF 1000”
“1000 kPa a (no reply if IEEE-488)
Example
(classic)
Sent:
Reply:
“PSF=1000”
“1000 kPa a
Errors ERR#
6
ERR# 8
ERR# 12
The target pressure is out of range.
Active external RPM4 timeout.
Pressure has exceeded maximum limits.
See Also
“PR”, “PRR”, “STAT”, “SR”, “PSS”, “PS”
3.2.1
PSS
Purpose
Set a new target pressure using a slow fixed rate and aborting pressure control once the
target
is reached.
Command “PSS
n
”
Classic “PSS=
n
”
Arguments
N:
The target pressure in the current pressure units.
Remarks
The PPCH-G sets the given target pressure using a rate of 0.2% FS/sec, and stops
controlling when the pressure has reached or passed the given target. The system does not
attempt to maintain the target pressure.
The “PR?”, “PRR?”, “STAT?”, or “SR?” program message can be used to monitor the
progress of the generation.
Example
(enhanced)
Cmd sent:
Reply:
“PSS 1000”
“1000 kPaa”
(no reply if IEEE-488)
Example
(enhanced)
Cmd sent:
Reply:
“PSS? 1000”
“1000 kPaa”
Example
(classic)
Sent:
Reply:
“PSS=1000”
“1000 kPaa”
Errors ERR#
6
ERR# 8
ERR# 12
The target pressure is out of range.
Active external RPM4 timeout.
Pressure has exceeded maximum limits.
See Also
“PR”, “PRR”, “STAT”, “SR”, “PSF”, “PS”
3.2.1
