PG7000™ OPERATION AND MAINTENANCE MANUAL
© 1998-2008 DH Instruments, a Fluke Company
Page 148
HLDPPOS
Purpose
Get the piston positions of the reference and tare PG7000s in high line differential mode.
Also returns the real time or average crossfloat fall rate difference when available.
Syntax “HLDPPOS”
Remarks
This command can be used while generating the line pressure or during normal high line
pressure operation. The third field (crossfloat fall rate difference) is only available during
the crossfloating step of line pressure setting. It is an average value during the
crossfloat fall rate measurement function and a real time value in all other conditions.
Example Typical
command:
Typical reply:
“HLDPPOS”
“0.7, 0.6, 9 8”
Notes
See the “HLDLINEP” command
See Also
3.9.4.2, 3.11.5, 4.5, MODE, ABORT, HLDVIEW, HLDPPOS, HLDFALL, HLDXFLT
HLDVIEW
Purpose
Get the results from the previous line pressure set in high line differential mode.
Syntax “HLDVIEW”
Remarks
Returns the results of the previous line pressure set sequence (local or remote). This
data is replied in the following comma delimited format:
pppp.pp uuuu, rr.r, tt.t, RR.R, TT.T, delta
Pppp.pp
uuuu
rr.r
The nominal line pressure
The line pressure units
The reference piston-cylinder temperature recorded at the time
of crossfloat in º C
tt.t
The tare piston-cylinder temperature recorded at the time of
crossfloat º C
RR.R
TT.T
Delta
The reference piston natural fall rate (mm/s)
The tare piston natural fall rate (mm/s)
The natural fall rate difference
Example Typical
command:
Typical reply:
“”HLDVIEW”
“2000.0 kPa, 23.4, 23.2, -0.3, -0.4, 0.21”
See Also
3.9.4.2, 3.11.5, 4.5, MODE, ABORT, HLDVIEW, HLDPPOS, HLDFALL, HLDXFLT
HLDXFLT
Purpose
Get the results of the last crossfloat fall rate measurement step while executing the line
pressure sequence in high line differential mode.
Syntax “HLDXFLT”
Remarks
This command should only be used after the crossfloat fall rate measurement function of
setting a line pressure has completed (see Section 4.5). The reply contains:
Final average crossfloat fall rate difference (
Δ
mm/min) or “ERR”
Suggested trim mass (g) adjustment on the tare PG7000 or “ERR”
If the reference or tare piston position was outside of
±
2.9 mm during this step, an ERR
message is contained in both data fields.
Example Typical
command:
Typical reply:
Typical reply:
“HLDXFLT”
“0.1, 0.001g” (step completed without error)
“ERR, ERR” (piston position exceeded
±
2.9 mm)
Error
ERR #40
ERR #41
Did not just complete crossfloat step of LineP sequence
Piston position exceeded
±
2.9 mm
See Also
3.9.4.2, 3.11.5, 4.5, MODE, ABORT, HLDVIEW, HLDPPOS, HLDFALL, HLDXFLT
LOCALG(=)
Purpose
Set or read the PG7000 local gravity.
Syntax “LOCALG=x”
“LOCALG”
Default “LOCALG=9.80665”
Argument
X:
The current local gravity.
Remarks
The local gravity is used in the mass to pressure calculation. The Setup determines if
the local gravity, the default gravity or a user defined gravity will be used for this
calculation.
Example Typical
command:
Typical reply:
“LOCALG=9.805”
“9.80500”
Error
See 9.3.2 Error Messages
ERR #1
If x is <8 or >11
See Also
3.11.6, 2.4.3, 3.10
