4. REMOTE OPERATION
Page 155
© 1998-2008 DH Instruments, a Fluke Company
PISTONRDYx(=)
Purpose
Read or set a piston-cylinder module’s rotation rate limits.
Syntax “PISTONRDYx=MinRPM,
MaxRPM
“PISTONRDYx”
Default N/A
Argument
MinRPM:
The minimum allowed rotation speed at which the measurement
becomes
Ready
[rpm]. If autorotate is enabled, this is also the
point at which the rotation system will engage. This does not
apply if the bell is not loaded.
MaxRPM:
The target maximum rotation rate when automated rotation
engages to rotate the piston. This does not apply if the bell is
not loaded.
Remarks
There are a number of conditions to allow the PG7000 measurement to become
Ready
.
These two piston-cylinder module dependent limits determine when the rotation rate is in
the correct limits.
Example Typical
command:
Typical reply:
“PISTONRDY1”
“10, 50”
Error
See 9.3.2 Error Messages
ERR #1..2
x invalid first or second argument
See Also
3.4, 3.4.2, 3.11.1.1, READYx
PISTONVARx(=)
Purpose
Read or set a piston-cylinder module’s characteristics.
Syntax “PISTONVARx=Sn,PCalpha,CylAlpha,DefCoef,Tension,Offset, k (P)”
“PISTONVARx”
Default N/A
Argument
x:
The piston-cylinder number 1, 2, or 3
Sn:
The piston-cylinder serial number (4 digits max)
Pcalpha:
The piston temperature coefficient
CylAlpha:
The cylinder temperature coefficient
DefCoef:
The piston-cylinder Ae pressure coefficient
Tension:
The surface tension
Offset:
The reference level offset from the mounting post reference
mark
k(P):
The mass to fall rate coefficient for tare piston-cylinders used in
high line differential mode.
Remarks
You may define up to seventeen different piston-cylinder sets to use with PG7000 using
the PISTONx, and the PISTONVARx command is then used to edit the piston-cylinder
set physical information.
Example Typical
command:
Typical reply:
“PISTONVAR1”
225, 5.5000 10-6/dC, 4.5000 10-6/dC, 5.3800 10-6/MPa,
0.0000000N/m, 32.4600mm
Error
See 9.3.2 Error Messages
ERR #1..7
x invalid first through seventh argument
See Also
3.11.1.1
PISTONx(=)
Purpose
Read or set a piston-cylinder module’s general information.
Syntax “PISTONx=Sn,Area,Mass,Density,CalCert#,CertDate; EditDate”
“PISTONx”
Default n/a
Argument
x:
The piston-cylinder module number 1 through 17
Sn:
The piston-cylinder module serial number
Area:
The piston-cylinder module effective area (mm2)
Mass:
The piston assembly mass (kg)
Density:
The piston assembly apparent density (kg/m3)
CalCert#:
The calibration report number (dd/mm/yy)
CertDate:
The calibration report date (dd/mm/yy)
EditDate:
The date that this data was last edited
Remarks
You may define up to seventeen different piston-cylinder sets to use with the PG7000
using the PISTONx, and PISTONVARx commands. The PISTONx command is used to
edit the piston-cylinder set general information.
Example Typical
command:
Typical reply:
“PISTON1”
“225, 196.110000 mm2, 0.200000kg, 4233.0Kg/m3, 100,
19990115, 19990120
Error
See 9.3.2 Error Messages
ERR #1..7
x invalid first through seventh argument
See Also
3.11.1, 3.11.1.1, PISTONVARX (=)
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