DH Instruments PG7307 User manual

© 2002 - 2007 DH Instruments, a Fluke Company
PG7307™
Controlled Clearance Piston Gauge
Operation and Maintenance Manual
(Use with PG7000 Operation
and Maintenance Manual)

© 2002 - 2007 DH Instruments, a Fluke Company
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.
© 2002 - 2007 DH Instruments, a Fluke Company All rights reserved.
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.
Document No. 550127-01
070918
Printed in the USA.

TABLE OF CONTENTS
Page I © 2002 - 2007 DH Instruments, a Fluke Company
T
TA
AB BL LE E O
OF
F C
CO
ON NT TE EN NT TS S
TABLE OF CONTENTS...............................................................I
TABLES..................................................................................II
FIGURES.................................................................................II
ABOUT THIS MANUAL .............................................................III
1. INTRODUCTION .................................................................5
1.1 PRODUCT OVERVIEW ...........................................................................................................................5
1.2 PLATFORM REAR PANEL .....................................................................................................................5
1.3 MOUNTING POST AND PISTON-CYLINDER MODULE SCHEMATIC..................................................6
1.4 SPECIFICATIONS ...................................................................................................................................7
1.4.1 GENERAL SPECIFICATIONS.......................................................................................................................7
1.4.2 PISTON-CYLINDER MODULES....................................................................................................................8
2. INSTALLATION ..................................................................9
2.1 UNPACKING AND INSPECTION ............................................................................................................9
2.1.1 INSPECTING CONTENTS.............................................................................................................................9
2.1.1.1 PG7307 PLATFORM..................................................................................................................................9
2.1.1.2 PISTON-CYLINDER MODULE ................................................................................................................10
2.2 INITIAL SETUP......................................................................................................................................10
2.2.1 CCP PRESSURE CONNECTION................................................................................................................10
2.2.2 INSTALLING AND REMOVING THE PISTON-CYLINDER MODULE........................................................10
3. OPERATION..................................................................... 11
3.1 CONTROLLED CLEARANCE PRESSURE (CCP)................................................................................11
4. MAINTENANCE, ADJUSTMENTS AND CALIBRATION............ 13
4.1 DISASSEMBLY AND REASSEMBLY OF CONTROLLED CLEARANCE OIL OPERATED PISTON-
CYLINDER ASSEMBLIES (PG7307) ....................................................................................................13
5. TROUBLESHOOTING ........................................................ 15
5.1 OVERVIEW............................................................................................................................................15
6. WARRANTY STATEMENT .................................................. 17
APPENDIX............................................................................. 19

PG7307™ OPERATION AND MAINTENANCE MANUAL
© 2002 - 2007 DH Instruments, a Fluke Company Page II
T
TA
AB BL LE ES S
Table 1. PG7307 Parts List..........................................................................................................................9
Table 2. PG7307 Piston-Cylinder Modules Parts List ...............................................................................10
Table 3. PG7307 Troubleshooting Checklist.............................................................................................15
Table 4. DHI Authorized Service Providers...............................................................................................17
F
FI
IG GU UR RE ES S
Figure 1. PG7307 Platform Rear Panel.......................................................................................................5
Figure 2. PG7307 Mounting Post and Piston-Cylinder Module Schematic.................................................6
Figure 3. Oil Piston-Cylinder Module (Exploded View)..............................................................................14

ABOUT THIS MANUAL
Page III © 2002 - 2007 DH Instruments, a Fluke Company
A
AB
BO OU UT T T
TH
HI IS S M
MA
AN NU UA AL L
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.
Manual Conventions
(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.
[ ] indicates direct function keys (e.g., [RANGE]).
< > indicates PG7000 screen displays (e.g., <1yes>).

PG7307™ OPERATION AND MAINTENANCE MANUAL
© 2002 - 2007 DH Instruments, a Fluke Company Page IV
N
NO
OT TE ES S

1. INTRODUCTION
Page 5 © 2002 - 2007 DH Instruments, a Fluke Company
1
1. . I IN
NT TR RO OD DU UC CT TI IO ON N
1.1 PRODUCT OVERVIEW
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
2. COM3 (RS232) - Automated Pressure
Generation/Control Component
3. COM1 (RS232) - Remote Host Communications
4. Ambient Temperature Sensor
5. IEEE-488 - Remote Host Communications
6. Ambient Relative Humidity Sensor
7. Pressure Ports:
TEST Port: DH500
CCP Port: DH500
8. PG7000 Terminal Port
Figure 1.PG7307 Platform Rear Panel

PG7307™ OPERATION AND MAINTENANCE MANUAL
© 2002 - 2007 DH Instruments, a Fluke Company Page 6
1.3 MOUNTING POST AND PISTON-CYLINDER MODULE
SCHEMATIC
1. Piston Head
2. Flange Screws (2 ea)
3. Oil Run Off Passage
4. Mounting Post
5. Platinum Resistance
Thermometer Mounting Hole
6. Weep Hole
7. Cylinder (tungsten carbide)
8. Piston (tungsten carbide)
9. Cylinder Sleeve
10. Module Retaining Nut
11. Piston Cap
12. Upper Sleeve Flange
13. Controlled Clearance Pressure Sleeve O-Ring
14. Cylinder Counter Bore
15. Controlled Clearance Pressure Sleeve O-Ring
16. Controlled Clearance Pressure Supply
17. Measured Pressure Supply
18. Measured Pressure Mounting Post O-Ring
19. Controlled Clearance Pressure Mounting Post O-Ring
20. Lower Sleeve Flange
21. Controlled Clearance Pressure Cylinder O-Ring,
Lower Sleeve Flange (and Anti-extrusion Ring
for 500 kPa, 1 Mpa and 2 Mpa P-C Modules)
22. Measured Pressure Cylinder O-Ring
23. Controlled Clearance Pressure Cylinder O-Ring,
Upper Sleeve Flange
Figure 2. PG7307 Mounting Post and Piston-Cylinder Module Schematic

1. INTRODUCTION
Page 7 © 2002 - 2007 DH Instruments, a Fluke Company
1.4 SPECIFICATIONS
1.4.1 GENERAL SPECIFICATIONS
Specifications below are specific to PG7307. All other specifications are identical to PG7000
specifications found in the PG7000 Operation and Maintenance Manual (P/N 550099).
Weight
Instrument platform
with no mass loaded.
13 kg (29 lb)
Overall Pressure Range 100 kPa to 200 MPa (14.5 to 30 000 psi)
Normal Operating Medium Di-2 EthylHexyl Sebacate
Maximum Mass Load 100 kg, while not exceeding 200 MPa (30 000 psi)
Pressure Connections
Test Port: DH500
Controlled Clearance Pressure (CCP) Port: DH500
DH500 is a gland and collar type fitting for 1/4 in. (6 mm) coned
and left hand threaded tubes equivalent to AE F250C, HIP HF4,
etc.

PG7307™ OPERATION AND MAINTENANCE MANUAL
© 2002 - 2007 DH Instruments, a Fluke Company Page 8
1.4.2 PISTON-CYLINDER MODULES
Oil operated, controlled clearance, piston-cylinder module characteristics.
For all modules, pressure deformation is near zero with a controlled clearance pressure
of 20 to 25 % of the measured pressure.
PC-7307-100 (Kn = 100 kPa/kg)
Operation
Piston Material
Cylinder Material
Nominal Diameter
Nominal Area
Mounting System
Typical Drop Rate (50 kg, zero CCP)
Nominal pressure deformation (zero CCP)
Oil operated, oil lubricated
Tungsten carbide
Tungsten carbide
11.2 mm
98.1 mm2
Simple free deformation with controlled clearance feature
0.04 mm/min
1.2 x 10-6 MPa-1
PC-7300-200 (Kn = 200 kPa/kg)
Operation
Piston Material
Cylinder Material
Nominal Diameter
Nominal Area
Mounting System
Typical Drop Rate (50 kg, zero CCP)
Nominal pressure deformation (zero CCP)
Oil operated, oil lubricated
Tungsten carbide
Tungsten carbide
7.9 mm
49.0 mm2
Simple free deformation with controlled clearance feature
0.08 mm/min
8.9 x 10-7 MPa-1
PC-7300-500 (Kn = 500 kPa/kg)
Operation
Piston Material
Cylinder Material
Nominal Diameter
Nominal Area
Mounting System
Typical Drop Rate (50 kg, zero CCP)
Nominal pressure deformation (zero CCP)
Oil operated, oil lubricated
Tungsten carbide
Tungsten carbide
5.0 mm
19.6 mm2
Simple free deformation with controlled clearance feature
0.25 mm/min
7.5 x 10-7 MPa-1
PC-7300-1 (Kn = 1 MPa/kg)
Operation
Piston Material
Cylinder Material
Nominal Diameter
Nominal Area
Mounting System
Typical Drop Rate (50 kg, zero CCP)
Nominal pressure deformation (zero CCP)
Oil operated, oil lubricated
Tungsten carbide
Tungsten carbide
3.5 mm
9.8 mm2
Simple free deformation with controlled clearance feature
0.50 mm/min
7.2 x 10-7 MPa-1
PC-7300-2 (Kn = 2 MPa/kg)
Operation
Piston Material
Cylinder Material
Nominal Diameter
Nominal Area
Mounting System
Typical Drop Rate (50 kg, zero CCP)
Nominal pressure deformation (zero CCP)
Oil operated, oil lubricated
Tungsten carbide
Tungsten carbide
2.5 mm
4.9 mm2
Simple free deformation with controlled clearance feature
1.00 mm/min
7.1 x 10-7 MPa-1

2. INSTALLATION
Page 9 © 2002 - 2007 DH Instruments, a Fluke Company
2
2. . I
IN
NS ST TA AL LL LA AT TI IO ON N
2.1 UNPACKING AND INSPECTION
2.1.1 INSPECTING CONTENTS
Check that all items are present and have no visible damage.
2.1.1.1 PG7307 PLATFORM
Table 1.PG7307 Parts List
DESCRIPTION
PG7307
P/N 401758
MOTORIZED
ROTATION
NON-CE
PG7307
P/N 401758-CE
MOTORIZED
ROTATION
CE
PG7307
P/N 401757
NON-MOTORIZED
ROTATION
NON-CE
PG7307
P/N 401757-CE
NON-MOTORIZED
ROTATION
CE
Platform 401760 401760-CE 401759 401759-CE
Mass Bell 402098
Terminal 401284
PG Terminal to Platform Cable
Non-CE (DB25M -DB25F,
≈1.8 meters) 102227 102227
CE (DB25M - DB25F,
≈1.5 meters) 102227-CE 102227-CE
Power Cable 100770 (Black) 100770-CE (Gray) 100770 (Black) 100770-CE (Gray)
Accessory Kit 401134
NIP, SS, DH200, 2.75 in. 100204
ADPT, SS, DH200 F x 2 NPT F 100299
O-ring, Buna 2-242 (2 ea.) 101976
Storage Cover, 7600 Type 102132
Allen Wrench, 2.5 mm 102257
Allen Wrench, 3 mm 102168
Allen Wrench, 5 mm 102262
Spanner Wrench (Metrological) 122568
Wrench, 5/8 in. 103044
Collar, SS, DH500 101201
Krytox®GPL205/6 0.5 oz 102496
Gift Kit with Gloves 400511
Documentation
Calibration Report (PG)
Calibration Report (Mass Bell)
Technical Data
PG7000 Operation &
Maintenance Manual
PG7307 Operation &
Maintenance Manual
Documentation CD
550100
550100
550101
550099
550127
102987

PG7307™ OPERATION AND MAINTENANCE MANUAL
© 2002 - 2007 DH Instruments, a Fluke Company Page 10
2.1.1.2 PISTON-CYLINDER MODULE
Table 2. PG7307 Piston-Cylinder Modules Parts List
PC-7307-100 100 kPa/kg PC-7300-200 200 kPa/kg PC-7300-500 500 kPa/kg PC-7300-1 1 MPa/kg PC-7300-2 2 MPa/kg
Piston-Cylinder Kit 401761 401762 401763 401764 401765
Piston-Cylinder Module 401851 401852 401853 401854 401855
Hermetic PVC Bullet Case 401850 401850 401850 401850 401850
Accessory Kit 401818 401819 401826 401826 401826
O-rings 101675 (2 ea)
101972 (2 ea)
102109 (1 ea)
101294 (2 ea)
101675 (2 ea)
101972 (2 ea)
102109 (1 ea)
101294 (1 ea)
101206 (1 ea)
101675 (2 ea)
101972 (2 ea)
102109 (1 ea)
101294 (1 ea)
102296 (1 ea)
101675 (2 ea)
101972 (2 ea)
102109 (1 ea)
101294 (1 ea)
102296 (1 ea)
101675 (2 ea)
101972 (2 ea)
102109 (1 ea)
101294 (1 ea)
102296 (1 ea)
Anti-Extrusion Ring N/A N/A 123537 123537 123537
Calibration Report 550100 550100 550100 550100 550100
2.2 INITIAL SETUP
2.2.1 CCP PRESSURE CONNECTION
The pressure connection labeled CCP is for the application of a controlled clearance
pressure to the outside of the cylinder (see Section 3.1).
2.2.2 INSTALLING AND REMOVING THE PISTON-CYLINDER
MODULE
This piston-cylinder module is installed and removed from the piston gauge platform in the
same manner as PG7302 and other PG7000 piston-cylinder modules. See the PG7000
Operation and Maintenance Manual.

3. OPERATION
Page 11 © 2002 - 2007 DH Instruments, a Fluke Company
3
3. . O OP
PE ER RA AT TI IO ON N
3.1 CONTROLLED CLEARANCE PRESSURE (CCP)
PRINCIPLE
PG7307 allows an independent pressure to be applied to the total outside length of the cylinder.
The purpose of this feature is to apply a counter-force to the outside of the cylinder in order to vary the
size of the gap between the piston and the cylinder. The ability to predictably vary the size of the gap
between the piston and the cylinder can be useful in analyzing piston-cylinder elastic deformation.
The controlled clearance pressure is introduced through the CCP port on the back of the PG7307 platform.
The pressure is applied to the cylinder through the mounting post to a separate circuit in the
piston-cylinder module (see Figure 2).
See the publication in the Appendix section of this manual, “A New Oil Operated Controlled Clearance
Piston Gauge for Operation to 200 MPa” for additional information on PG7307 principles of design and use.
OPERATION
The recommended range of CCP for the experimental study of the pressure deformation coefficient is
from zero to 50 % of the measured pressure. Since the CCP resulting in zero deformation coefficient is
about 25 % of the measured pressure, a CCP range of zero to 50 % of the measured pressure allows
positive and negative deformation values symmetric around zero to be obtained.
By design, the maximum controlled clearance pressure (CCP) used in PG7307 is the pressure
corresponding to a 100 kg mass load on the piston or 100 MPa, whichever is smaller. Exceeding these
limits can damage the piston-cylinder. The recommended range of CCP is from zero to 50 % of the
measured pressure.
Always increase the measured pressure before applying the CCP.
Always decrease the CCP before removing the measured pressure.
For example, when starting from zero measured pressure, always generate the measured pressure
first and then apply the CCP. When going back to zero measured pressure, always vent the CCP first,
before venting the measured pressure.

PG7307™ OPERATION AND MAINTENANCE MANUAL
© 2002 - 2007 DH Instruments, a Fluke Company Page 12
N
NO
OT TE ES S

4. MAINTENANCE, ADJUSTMENTS AND CALIBRATION
Page 13 © 2002 - 2007 DH Instruments, a Fluke Company
4
4. . M
MA
AI IN NT TE EN NA AN NC CE E,
,
A
AD
DJ JU US ST TM ME EN NT TS S A
AN
ND D
C
CA
AL LI IB BR RA AT TI IO ON N
4.1 DISASSEMBLY AND REASSEMBLY OF CONTROLLED
CLEARANCE OIL OPERATED PISTON-CYLINDER
ASSEMBLIES (PG7307)
The PG7000 piston-cylinder module design affords maximum protection to the piston-cylinder
element ensuring that it is protected during routine piston-cylinder handling. Cleaning the piston-cylinder
requires disassembly of the module and exposure of the piston-cylinder to possible damage. These
risks include damage to the critical working surfaces for all piston-cylinder sizes and chipping or
breaking, especially for small diameter piston-cylinders. Only qualified personnel should undertake
piston-cylinder disassembly, cleaning and reassembly. The instructions and recommendations
contained in this manual should be followed carefully throughout the operation.
NEVER touch the lapped surfaces (polished appearance) of the piston or cylinder with your bare hands.
Body oils and acids can permanently etch the surfaces.
In normal use, always maintain PG7307 oil piston-cylinders vertical with the O-ring assembly down.
Do not invert the assembly and allow oil to run up the piston head into the adjustment mass and cap.
Oil contamination of the piston head and cap changes the total mass of the piston assembly and
could be significant at low mass loads. If oil contaminates the adjustment mass and cap,
disassemble the module and clean it (see PG7000 Operation and Maintenance Manual).

PG7307™ OPERATION AND MAINTENANCE MANUAL
© 2002 - 2007 DH Instruments, a Fluke Company Page 14
To assemble and disassemble a PG7307 piston cylinder module, proceed as follows:
Figure 3. Oil Piston-Cylinder Module (Exploded View)
nScrew the piston-cylinder module into the base of its
bullet case (PVC shipping and storage case) and
place the base and module on a clean stable
surface with the piston cap (2) up.
oUsing a 3 mm Allen tool, loosen the two socket
head sleeve retaining screws (5) from the opposing
sides of the main module housing (4).
In reassembly, after the two sleeve retaining
screws (5) are installed, sleeve assembly
(9+13+18) must still have a small amount of
freedom to move and rotate within the main
module housing (4).
pWhile firmly holding down the cap (2), use a 5 mm Allen
tool, to loosen the socket head cap retaining screw
(1). Turning the screw pushes the piston head (6)
straight out of the piston cap (2) ensuring that no
sideways torque is applied to the piston (7). The
cap retaining screw will not fully disengage from the
piston cap due to the adjustment mass (3). Gently
remove the cap and screw from the assembly. Use
caution to be sure the piston head is out of the cap
so as NOT to apply torque to the piston (7) when
removing the cap.
When installing the piston cap during
reassembly, remember to reinstall the
adjustment mass (3). Take great care to
slip the piston cap (2) straight onto the
piston head (6) and not to apply torque to
the piston (7).
qUnscrew the main module housing (4) from the
bullet case leaving the piston-cylinder and sleeve
assembly (9+13+18) behind in the bullet case base.
Carefully reinstall the piston cap (2) onto the piston
head (6) taking care not to apply sideways torque
on the piston (7). Using the cap as a handle, slide
the piston straight out of the cylinder.
Remove the cylinder and sleeve assembly (8 + 9 +
13) from the bullet case base. Turn over the
assembly and place it on the sturdy surface with the
O-ring assembly (18) up.
Stop here if you are doing a simple cleaning of
the piston-cylinder. The cylinder (11) can be
cleaned within the sleeve assembly (9+13+18)
by flushing with clean oil. The O-ring assembly
(18) is NOT intended to be regularly
disassembled. Do not proceed with the next
step of disassembly unless it is suspected
that a repair is required. Do not proceed with
the next step of disassembly if you do NOT
have a new set of O-rings (10, 12, 14, 15, 17) and
anti-extrusion ring (16) to use in reassembly.
It is imperative that new parts be used in
reassembly (not all modules have an anti-
extrusion and all the O-rings (see Table 2)).
sUsing a 2 mm Allen tool, loosen the two O-ring
assembly retaining screws (21). Lift off the O-ring
assembly (18) and the retaining screws. Remove
O-rings (14, 17) and the anti-extrusion ring (16)
(PC-7307-200 and -100 do NOT have an
anti-extrusion ring).
In reassembly use new O-rings and
anti-extrusion ring only and take special care
to center the anti-extrusion ring on the
shoulder of part (18).
tHolding the cylinder (11) in the open end of the
cylinder sleeve (13), turn the cylinder sleeve over
and allow the cylinder to gently slide out. Remove
O-ring (10). Using a 3 mm Allen tool, loosen the
cover retaining screws (8). Remove the cover (9)
and remove the O-ring (12).
In reassembly use new O-rings. The end of
the cylinder marked with the serial number
must be upwards (towards the cover (9)).
The orientation of the piston on the cylinder is important. The end of the cylinder that is marked with
the serial number should be upwards (against the sleeve cover (9)). Installing the cylinder with the
wrong orientation may lead to out of tolerance measurements.

5. TROUBLESHOOTING
Page 15 © 2002 - 2007 DH Instruments, a Fluke Company
5
5. . T TR
RO OU UB BL LE ES SH HO OO OT TI IN NG G
5.1 OVERVIEW
Identify the symptom or unexpected behavior you are observing from the SYMPTOM list below.
A PROBABLE CAUSE is provided and a SOLUTION is proposed including references to manual
sections that provide information that may be of assistance. Table 3 concerns troubleshooting issues for
the PG7307 only. See the PG7000 Operation and Maintenance Manual for the complete PG7000
troubleshooting checklist.
Table 3.PG7307 Troubleshooting Checklist
SYMPTOM PROBABLE CAUSE SOLUTION
Piston lacks sensitivity/mobility.
Piston rotation rate decreases too
rapidly.
Controlled clearance pressure too
high relative to measured pressure is
causing gap between piston and
cylinder to be too small.
Reduce controlled clearance pressure
and/or increase measured pressure. (3.1)
Controlled clearance pressure will
not stabilize and decreases rapidly. Leak in controlled clearance pressure circuit of piston-cylinder
module.
Remove module and replace O-ring (19).
If problem persists, disassemble the
module and replace O-rings (12, 14). (4.1)
Controlled clearance pressure will
not stabilize and increases rapidly. Leak from the measured pressure circuit to the controlled clearance
pressure circuit.
Remove module and replace O-ring (20).
If problem persists, disassemble and
change O-rings (10, 17). (4.1)

PG7307™ OPERATION AND MAINTENANCE MANUAL
© 2002 - 2007 DH Instruments, a Fluke Company Page 16
N
NO
OT TE ES S

6. WARRANTY STATEMENT
Page 17 © 2002 - 2007 DH Instruments, a Fluke Company
6
6. . W WA
AR RR RA AN NT TY Y S
ST
TA AT TE EM ME EN NT T
Except to the extent limited or otherwise provided herein, DH Instruments, a Fluke Company (DHI)
warrants for one year from purchase, each new product sold by it or one of its authorized distributors,
only against defects in workmanship and/or materials under normal service and use. Products which
have been changed or altered in any manner from their original design, or which are improperly or
defectively installed, serviced or used are not covered by this warranty.
DHI and any of its authorized service providers’ obligations with respect to this warranty are limited to the
repair or replacement of defective products after their inspection and verification of such defects. All products
to be considered for repair or replacement are to be returned to DHI, or its authorized service provider,
freight prepaid, after receiving authorization from DHI or its authorized service provider. The buyer
assumes all liability vis-à-vis third parties in respect of its acts or omissions involving use of the products.
In no event shall DHI be liable to purchaser for any unforeseeable or indirect damage, it being expressly
stated that, for the purpose of this warranty, such indirect damage includes, but is not limited to, loss of
production, profits, revenue, or goodwill, even if DHI has been advised of the possibility thereof, and
regardless of whether such products are used individually or as components in other products.
Items returned to DHI under warranty claim but determined to not have a defect covered under warranty
or to not have a defect at all are subject to an evaluation and shipping charge as well as applicable repair
and/or calibration costs.
The provisions of this warranty and limitation may not be modified in any respect except in writing signed
by a duly authorized officer of DHI.
The above warranty and the obligations and liability of DHI and its authorized service providers exclude
any other warranties or liabilities of any kind.
Table 4. DHI Authorized Service Providers
DH INSTRUMENTS, A FLUKE COMPANY
AUTHORIZED SERVICE PROVIDERS
COMPANY ADDRESS TELEPHONE, FAX & EMAIL NORMAL SUPPORT REGION
DH Instruments, a Fluke
Company
4765 East Beautiful Lane
Phoenix AZ 85044-5318
USA
Tel [phone]
Fax [phone]
[email protected]
Worldwide
Minerva I.P.&M. B.V. Handelsweg 13
Postbus 76-1270
AB Huizen
NETHERLANDS
Tel [phone]
Fax [phone]
[email protected]
European Union
Nippon CalService, Inc. 2-9-1 Sengen, Tsukuba-Shi
Ibaraki Prefecture 305
JAPAN
Tel [phone]
Fax [phone]
[email protected]
Japan/Asia
DH Products Technical
Service Division National Institute of Metrology Heat Division
Pressure & Vacuum Lab
NO. 18, Bei San Huan Donglu
Beijing 100013
PR CHINA
Tel [phone] ext 5
Tel [phone] ext 5
Fax [phone]
[email protected]
Peoples Republic of
China

PG7307™ OPERATION AND MAINTENANCE MANUAL
© 2002 - 2007 DH Instruments, a Fluke Company Page 18
N
NO
OT TE ES S