Pressure Balances
AMH Automated Mass Handler for PG7000 series Piston Gauges

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.

Description

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.

 

Specifications

AMH-38 Piston-Cylinder Ranges and Automated Increment
Piston-cylinder moduleMin pressureMax pressure
with max 38 kg mass load
Min automated increment
kPaPsikPaPsikPaPsi
PC-7100/7600-10-L713805510.15
PC-7100/7600-10, TC101.53805510.15
PC-7100/7600-20182.676011020.3
PC-7100/7600-50355190027550.7
PC-7100/7600-10070103800551101.5
PC-7100/7600-2001402076001100203

 

AMH-38 Piston-Cylinder Ranges and Automated Increment
Piston-cylinder moduleMin pressureMax pressure
with max 38 kg mass load
Min automated increment
kPaPsikPaPsikPaPsi
PC-7100/7600-10-L713805510.15
PC-7100/7600-10, TC101.53805510.15
PC-7100/7600-20182.676011020.3
PC-7100/7600-50355190027550.7
PC-7100/7600-10070103800551101.5
PC-7100/7600-2001402076001100203

1 Limited by fall rate.
2 100 MPa (15 000 psi) max in PG7202.

 

Automated Mass Handler
Electrical Power
100 to 240 VAC, 50 to 60 Hz
30 W max consumption
Normal Operating
Temperature Range
15 to 35 °C
Weight (Mass Handler Only)

 

AMH-38:
18 kg (40 lb)
AMH-100:
12 kg (26 lb)
Dimensions

 

AMH-38:
41 cm H x 37 cm W x 38 cm D
(16.3 in. x 14.6
in. x 15 in.)
AMH-100:
41 cm H x 41 cm W x 36 cm D
(16.3 in. x 16.1 in. x 14.1 in.)
Communications PortRS-232 (COM1), controlled by PG7000 platform
Drive Air Supply550 kPa (80 psi) “shop air”
Drive Air Connection
Quick connect equivalent to Swagelok
QM Series (QM2-B200)
AMH-38 Vacuum Chamber

 

Fittings:
(2) KF40 for pump and vacuum gauge upgrade
Typical Residual Vacuum:
< 10 mPa (0.08 mTorr) with 70 l/s turbo pump
Higher pressure with other pumps
Mass Changing Time< 15 sec
CE ConformanceAvailable, must be specified

 

Mass Set: MS-AMH-38, 25, 13
Fits PG7000 Platforms7601, 7607
Minimum mass (piston and bell)0.7 kg (1 kg w/ tungsten carbide 10 kPa/kg)
Maximum mass load38 kg, 25 kg or 13 kg
Minimum automated increment
100 g (373 increments), trim masses to 0.01 g may be loaded manually
Mass set composition

 

Piston 0.2 kg (10 kPa/kg t-c 0.5 kg)
Bell, tray, lifter assembly 0.5 kg
(6) cylindrical binary masses of 0.1, 0.2, 0.4,
0.8, 1.6, 3.2 kg
(5, 3 or 1) main mass disks of 6.2 kg each
(1) trim mass set of 50 g to 0.01 g*
Mass uncertainty± 5 ppm or 1 mg

* Trim masses loaded manually onto trim mass tray when needed.

 

Mass Set: MS-AMH-100, 80, 60, 40
Fits PG7000 Platforms7102, 7202, 7302, 7307
Minimum mass (piston and bell)1 kg
Maximum mass load103.7 kg, 87.3 kg, 63.7 kg or 43.7 kg
Minimum automated increment
100 g (1 027 increments), trim masses to 0.01 g may be loaded manually
Mass set composition

 

Piston 0.2 kg (10 kPa/kg t-c 0.5 kg)
Bell, tray, lifter assembly 0.8 kg
(7) cylindrical binary masses of 0.1, 0.2, 0.4,
0.8, 1.6, 3.2, 6.4 kg
(9, 7, 5 or 3) main mass disks of 10 kg each
(1) trim mass set of 50 g to 0.01 g*
Mass uncertainty± 5 ppm or 1 mg

* Trim masses loaded manually onto trim mass tray when needed.