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1.0 PURPOSE AND SCOPE OF MANUAL 

This manual is provided to guide users of Model 1305D 

and 1327D pressure testing devices in: 

(1) installing the equipment 

(2) Routine operations
The instructions in this manual are designed to be per-

formed by qualified instrument maintenance personnel.
Ashcroft Inc. does not recommend troubleshooting or 

repairs beyond the scope of this manual. Problems that 

cannot be remedied by following the instructions in this 

manual should be referred to the manufacturer. Immediate 

assistance can often be supplied by telephone. Defective 

components will be repaired or replaced by the manufac-

turer at his discretion and will be returned to the user by 

the same mode of shipment. Airmail or air express is rec-

ommended for urgent shipments. Returned goods should 

be accompanied by information requested in Section 6.
Contact Customer Service at: 

Ashcroft Inc. 

250 East Main Street 

Stratford, CT 06614 

Phone: (203) 378-8281 

Fax: (203) 385-0402

 

www.ashcroft.com 

email: [email protected]
1.1 Safety Precautions 

Pressure Testing Equipment must be selected and used 

in accordance with recognized industry codes and safety 

practices to avoid the possibility of misuse or misapplica-

tion which could result in personal injury or property dam-

age. Personnel responsible for selection and installation 

should also be familiar with the safety recommendations 

of ASME B40.1 that apply to elastic pressure elements 

and their application in general and specific services. 

ASME B40.1 is available from:
 

ANSI 

 

    or  ASME 

 

1430 Broadway   

345 47th Street   

 

New York, NY 10018 

New York, NY 10017

1. Pressure – Select a range so that the maximum ap-

plied pressure will never exceed the upper range limit.
2. Vibration – Excessive vibration could cause a loosen-

ing of components and abnormal wear resulting in loss of 

instrument accuracy or failure to provide valid data.
3. Temperature – Operation of the instrument in an en-

vironment where temperatures are in excess of design 

ratings may result in loss of accuracy and failure.
4. Process – Pressure boundary materials must be resis-

tant to the process media. Failure to assure compatibility 

may result in pressure boundary deterioration or failure. 

Instruments operated at high pressure or with potentially 

hazardous service, such as oxygen, should be carefully 

selected in accordance with recognized industry codes 

and the recommendations of ASME B40.1.
2.0 PRODUCT DESCRIPTION –  

THEORY OF OPERATION – CONSTRUCTION 
2.1.2 Product Description
2.1.3 Construction
 

The Ashcroft Type 1305D Dual Range Deadweight testers 

are precision built primary pressure standards, used for 

testing, setting, calibrating or repairing pressure mea-

suring devices within the test points 15 psi (100kPa) to 

10,000 psi (70,000kPa).

Ashcroft

®

 Installation and Maintenance Manual  

for the Ashcroft

®

 Type 1305D Deadweight Tester  

and Type 1327D Portable Pump
INDEX 

Section Description 

1.  

Scope of Manual Safety Precautions 

2.  

Product Description 1305  

 

Theory of Operation 

 Construction 

 Specifications
 

Product Description 1327 

 

Theory of Operation 

 Construction 

 Specifications 

3.  

Inspection 

 

 

Installation  

1305 

  Operation 1305 

  Installation 1327 

  Operation 1327 

4.  

 Factors Affecting Operation of Deadweight  

Testers 

5.  

Maintenance Instructions 

6.  

Warranty 

 

Shipping Instructions 

 

List of Illustrations

 

Figure 1-1 

 

Figure 1-2 

 

Figure 2-1 

 

Figure 2-2 

 

Figure 5-1

Summary of Contents for 1305D

Page 1: ... Manual for the ASHCROFT Type 1305D Deadweight Tester andType 1327D Portable Pump Installation and Maintenance Manual for the ASHCROFT Type 1305D Deadweight Tester andType 1327D Portable Pump I M002 10095_RevF_ 250 1526 _09 20 22 ...

Page 2: ...of 20 2 ...

Page 3: ...0018 New York NY 10017 1 Pressure Select a range so that the maximum ap plied pressure will never exceed the upper range limit 2 Vibration Excessive vibration could cause a loosen ing of components and abnormal wear resulting in loss of instrument accuracy or failure to provide valid data 3 Temperature Operation of the instrument in an en vironment where temperatures are in excess of design rating...

Page 4: ...nt mass being acted upon by gravity For this rea son the masses supplied with the tester are stamped with two pressure values the value being contingent on the effective area of the piston and cylinder assembly selected 2 1 3 Specifications 1305D Accuracy Combined tolerance of weights and piston and cylinder assemblies within 0 1 of reading Weight toler ance within 0 05 of mass Piston and cylinder...

Page 5: ...1 2 1 26 175 80 Model Piston Assembly Piston Net Number Pressure Range Piston Area Value Number of Weights by Value Weight L 5 L 1 L 2 L 4 L 5 bar Type Low High Low High Low High H 2 5 H 5 H 10 H 20 H 25 lbs kg 1305DB 20 1305DBH 20 1 20 5 2 5 1 1 2 1 2 63 29 1305DB 100 1305DBH 100 1 20 5 100 5 2 5 1 1 2 1 2 65 30 1305DB 150 0613 in 2 0123 in 2 1305DBH 150 1 30 5 150 3954 0791 5 2 5 1 1 2 1 4 75 34...

Page 6: ...andard 1 4 inch internal NPT and 1 2 inch internal NPT fitting adapters are supplied Operating Fluid 1327D Light grade machine oils au tomotive petroleum base SAE 20 oils or other equivalent fluids suitable for use with Buna N O ring materials 1 5 pints required 7 liters 1327DH Most hydraulic oils of phosphate ester base brake fluids skydrol pydraul etc suitable for use with Butyl or Ethylene Prop...

Page 7: ...DMG 250 1327DMGH 250 X X 0 10 0 40 0 250 40 18 1327DMGO 250 1327DMG 600 1327DMGH 600 X X 0 10 0 40 0 250 0 600 42 19 1327DMGO 600 1327DBG 10 1327DBGH 10 X X 0 10 36 16 1327DBGO 10 1327DBG 40 1327DBGH 40 X X 0 10 0 40 38 17 1327DBGO 40 bar 1327DBG 250 1327DBGH 250 X X 0 10 0 40 0 250 40 18 1327DBGO 250 1327DBG 600 1327DBGH 600 X X 0 10 0 40 0 250 0 600 42 19 1327DBGO 600 1327DAG 1000 1327DAGH 1000 ...

Page 8: ...ndle mo tion Repeat this action until no air bubbles are observed in the fluid flow Note the bleed screw must be closed when the handle is being raised Push the shuttle valve in towards the pump body and continue pumping to the desired test pressure Open the release valve 37 to vent the pressure To check operation pull the shuttle valve outward close the release valve and operate the pump handle s...

Page 9: ...of 20 9 Figure 2 1 Ashcroft Portable Deadweight Tester 1305D ...

Page 10: ...he gauge to the desired position and re tightening nut adapter Repeat the above procedure to connect the gauge being tested to the offset pipe assembly 64 or 66 3 4 3 Bench Space Required Allow a space 10 inch 2 5 cm width 23 inch 5 8 cm depth 22 inch 5 6 cm height allows for testing gauges up to 8 5 inch 250 mm size 3 4 4 Storage Space Required 101 2 inch 27 cm width 221 2 in 57 cm depth 10 inch ...

Page 11: ...ght of oil for various pressures A lighter oil may be used where low pressures are being checked a heavier oil where higher pressures are being tested The reservoir can be refilled while the test pump is operat ing under pressure 3 5 7 Caution Standard testers designed for oil service may not be used with water for oxygen service 3 5 8 Hydraulic service testers should not be filled with water or a...

Page 12: ...uracy of the finished weights better than 1 20th of 1 To maintain deadweight tester accuracy handle the weights with care and keep the piston and cyl inder in clean condition The tester should be flushed with a solvent occasionally preferably every six months so that operating fluid is al ways clean This will prolong component life and provide protection against possible sticky action between the ...

Page 13: ...f the tester body assembly casting When replacing O ring packings coat them with suitable lubricant to pre vent sticking and tearing during assembly and tightening of connection 5 14To Reassemble Body assembly on drip pans Replace body assembly 2 on drip pan 3 using bolts 25 5 15 Replacing Displacement Valve a Place O ring packing between back up washers b Attach back up washers and O ring packing...

Page 14: ...of 20 14 Figure 2 2 Ashcroft Portable Test Pump Type 1327D ...

Page 15: ...ylinder 3 Damaged piston plate damaged cylinder threads or damage to any component part that results in inferior performance or malfunctioning of the unit The piston cylinder assembly is available as a unit only This assures the user of maximum accuracy in his Ashcroft Deadweight Tester and maintains certified trace ability to the N I S T 6 0 WARRANTY SHIPPING INSTRUCTIONS HOWTO ORDER 6 1 Warranty...

Page 16: ...ate with deadweights drops rapidly Unable to hold constant pressure Worn piston and cylinder assembly Use a heavy oil temporarily Replace piston cylinder Stacked dead weights wobble when spinning piston plate Damaged dead weights Check dead weights for visible damage bends dents nicks etc and alignment Piston plate as sembly will not spin Too heavy an oil grade being used Flush fill unit with prop...

Page 17: ...of 20 17 4A ...

Page 18: ...d Valve 27 70 52 1 LEE236 Nameplate 4 70 58 1 LK227 Pipe Extension Assembly 180 00 Qty Unit Item Per List No Asmy Part No DescriptionPrice 59 2 LD227A Bushing2 9 50 60 2 LN141 Adapter 25 40 61 4 LD186 Collar 9 50 62 4 LD117 Nut Adapter 25 20 63 1 LH227A Extension Pipe 67 00 64 1 LJ227 Lower Connection Pipe Assembly 65 1 LF227A Lower Connection Pipe 104 00 66 1 LG227A Back Connection Pipe 104 00 67...

Page 19: ... psig 100 500 PSI WEIGHT SETS Weight Set Number of Weights with by High Pressure Value Part Carrying 25 50 100 200 500 Number Case psi psi psi psi psi LBH199C 1000 psi 1 3 2 3 LBH199B 2000 psi 1 3 2 3 2 LBH199A 3000 psi 1 3 2 3 4 LBH199 5000 psi 1 3 2 3 8 LBH199D 5000 to 10 10000 psi For complete 10 000 psi weight set order both part no LBH199 and LBH199D AVAILABLE WEIGHTS WEIGHT SETS ...

Page 20: ...change without notice All sales subject to standard terms and conditions Ashcroft Inc I M002 10095_RevF_ 250 1526 _09 20 22 Ashcroft Inc 250 East Main Street Stratford CT 06614 5145 U S A Tel 203 378 8281 email info ashcroft com www ashcroft com ...

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