High pressure liquids and gases are potentially hazardous. Energy stored in these liquids and gases
can be released unexpectedly and with extreme force. High pressure systems should be assembled
and operated only by personnel who have been instructed in proper safety practices.
Information in this document is subject to change without notice. No part of this document may be reproduced or transmitted in any
form or by any means, electronic or mechanical, for any purpose, without the express written permission of DH Instruments, a
Fluke Company 4765 East Beautiful Lane Phoenix AZ 85044-5318 USA.
DH Instruments makes sincere efforts to ensure accuracy and quality of its’ published materials; however, no warranty, expressed
or implied, is provided. DH Instruments disclaims any responsibility or liability for any direct or indirect damages resulting from the
use of the information in this manual or products described in it. Mention of any product or brand does not constitute an
endorsement by DH Instruments of that product or brand. This manual was originally composed in English and was subsequently
translated into other languages. The fidelity of the translation cannot be guaranteed. In case of conflict between the English version
and other language versions, the English version predominates.
Products described in this manual are manufactured under international patents and one or more of the following U.S. patents:
5,142,483, 5,257,640, 5,331,838, 5,445,035. Other U.S. and international patents pending.
DH Instruments, DH, DHI, PG7000, PG7302 and PG7307 are trademarks, registered and otherwise, of DH Instruments, a Fluke
Company.
Swagelok is a registered trademark of the Swagelok Company.
This manual is designed to be used in conjunction with the PG7000 Piston Gauges Operation and
Maintenance Manual, to operate a PG7307 Piston Gauge.
PG7307 is similar in conception and features to a PG7302 piston gauge. PG7307 differs in that it
includes provisions for the application of an independent controlled clearance pressure to the outside
surface of the cylinder. This includes differences in the piston-cylinder module and the mounting post.
This manual covers the aspects of PG7307 that are different from PG7302.
To operate a PG7307, use the PG7000 Operation and Maintenance Manual and follow the instructions
and information applying to PG7302. Refer to this manual for details on the PG7307 piston-cylinder
mounting post and piston-cylinder modules and the use of controlled clearance pressure.
(CAUTION) is used in throughout the manual to identify user warnings and cautions.
(NOTE) is used throughout the manual to identify operating and applications advice and
additional explanations.
T
T
HHIISS
M
AANNUUAAL
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Manual Conventions
[ ] indicates direct function keys (e.g., [RANGE]).
PG7307 is a special model in the PG7000 line of piston gauges. PG7307 is identical to PG7302 except
for its piston-cylinder modules and mounting post.
PG7307 is designed to allow an independent controlled clearance pressure (CCP) to be applied
to the outside surface of the cylinder. The controlled clearance pressure is used to alter the
pressure deformation coefficient of the piston-cylinder to study the piston-cylinder’s elastic deformation
with pressure. Relative to PG7302, PG7307 has different piston-cylinder modules that can only be
mounted in the PG7307 mounting post. The PG7307 mounting post includes a passage for application
of the independent controlled clearance pressure and there is a connection on the rear of the platform for
the controlled clearance pressure source.
PG7307 is available on a limited basis and, generally, is only offered for use in national measurement
institutes or other laboratories performing fundamental research in pressure metrology.
This manual was intended to be used as a supplement to the PG7000 Operation and Maintenance
Manual. PG7307 is identical to PG7302 except for its piston-cylinder modules and mounting post. To
operate a PG7307, use the PG7000 Operation and Maintenance Manual and the information on
PG7302 referring to this manual for PG7307 piston-cylinder module mounting post and controlled
clearance pressure information.
1.2 PLATFORM REAR PANEL
The PG7307 Platform rear panel provides the connection to the PG Terminal, remote communication
connections, the measured pressure and controlled clearance pressure connection ports.
1. COM2 (RS232) - External Barometer and Pass
Through Communications