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Fluke PG7000-AMH - full automated mass handling for dead weight tester
Article-No.: PG7000-AMH von DH Instrumentsmanufacturer
- AMH Sytem - an optional accessory to PG7000 platforms
- Pressure Range: Gas to 1,100 bar
- Two models cover the complete PG7000 line of gas
and oil operated piston gauges - Includes absolute mode with a vacuum reference
- Ultra-high performance alternative in pressure controller applications
Calibration Software COMPASS for Pressure is also available
PG7000™, already the world's most advanced piston gauge, takes another
step ahead with the introduction of AMH™ automated mass handling
technology. Finally, tedious, error prone and wear inducing manual mass
manipulation can be eliminated from high end piston gauge operation…
over the full pressure range, in a bench top system, at a reasonable
cost.
The AMH system is an optional accessory to PG7000
platforms. It can be added to existing platforms or ordered with new
installations. Two models are available to cover the complete PG7000
line of gas and oil operated piston gauges… including absolute mode with
a vacuum reference. Thanks to the PG7000's unique system architecture,
the exact level of automation appropriate for the application can be
configured with standard components. Automate mass handling while
maintaining direct operator control over pressure generation and
adjustment, or use standard pressure controllers to automate pressure
control and make fully automated piston gauge operation a reality. In
all cases, PG7000’s unified approach assures a simple, integrated system
with a single local and remote interface.
AMH technology
To
install the AMH masses, a binary mass loading tray isplaced on the
piston cap and a mass bell is installed over the tray. The mass set's
main mass discs are hung from the mass bell. Tubular binary masses are
placed in descending sequence on the mass bell hanger and on the tray.
The
mass handling system is placed over the installed mass set and
controlled by the PG7000 platform, using RS232 communications from the
platform's COM3 port.
To load a specific mass value, the mass
handling system raises the entire mass load above the piston upper end
of stroke to the mass selection position. The mass is raised by a
pneumatically actuated lifter acting on a lifter shaft connected to the
binary mass spindle. Each tubular binary mass that is not to be loaded
is held in place by engaging three selector pins. The three main mass
columns are rotated synchronously so that the main masses not to be
loaded are held in place by the columns' retention ledges and masses to
be loaded face release flats. When the mass selection is complete, the
lifter moves down, placing the lifter shaft, binary spindle, bell and
all the released masses onto the piston.
The AMH mass handling system is designed and tested to provide years of reliable, maintenance free mass manipulation.
Mass loading control
Control
of the mass handling system is integrated into PG7000’s intelligent
operation. In pressure entry mode, when a target pressure command is
entered from the front panel or remotely, PG7000 calculates the mass
required to achieve the target pressure. It then stops piston rotation
and loads the mass value by sending a command to the AMH. The true value
of mass loaded and exact pressure value achieved are reported and
updated real time. In mass entry mode, the requested value is loaded
directly.
The mass actually loaded by the AMH is as close as
possible to the target value within AMH's 100 g loading resolution. If
more precise mass loading is specified, the operator is instructed to
load trim masses on the trim mass tray (not available in absolute mode
with vacuum reference).
Access to piston-cylinder module
The
same piston-cylinder modules used in PG7000 with manual mass handling
are used with AMH. The piston-cylinder module can be removed and
reinstalled in less than 5 minutes, and requires about the same amount
of effort as a single, manual mass handling calibration sequence.
The
piston-cylinder module is accessed by removing the AMH mass handling
system and masses. The procedure is to load all of the mass on the
piston so that no masses are in contact with the mass handler. The mass
handler is lifted off of the PG7000 platform vertically, leaving behind
the complete loaded mass set. The masses are then removed manually to
access the piston-cylinder module.
AMH-38, 38 kg under vacuum for PG7601
The
AMH-38 provides automated mass handling of a 38 kg mass set for the
PG7601 piston gauge platform. The mass handling system is integrated
into a vacuum chamber which provides KF40 vacuum fittings for connection
of a turbo molecular vacuum pump and external vacuum gauge if desired.
Automated mass handling eliminates the need to break the vacuum between
pressure points and reference vacuum as low as 0.01 Pa (< 0.1 mTorr)
can be maintained indefinitely.
AMH-100, 100 kg for PG7102, 7202, 7302
The AMH-100 provides automated mass handling of a 100 kg mass set for the PG7102, PG7202 and PG7302 piston gauge platforms.
The
100 kg mass set results in a very wide range on a single
piston-cylinder module, minimizing the need for piston-cylinder changes.
A mass set of less than 100 kg can be configured if less than 100 kg is
needed.