Ashcroft 1327CM, 1305D Operating Manual

Installation and

Installation and

Maintenance

Maintenance

Manual for the

Manual for the

®

ASHCROFT

ASHCROFT

1305D Deadweight

1305D Deadweight

Tester and Type

Tester and Type

1327D Portable

1327D Portable

Pump

Pump

®

Type

Type

I&M002-10095 4/02 (250-1526) Rev. 7/05

®

shcroft

A

or the Ashcroft

f

nd Type 1327D Portable Pump

a

nstallation and Maintenance Manual

I

®

ype 1305D Deadweight Tester

T

INDEX
Section Description

.

1

.

2

cope of Manual Safety Precautions

S

roduct Description 1305

P

heory of Operation

T
Construction
Specifications

roduct Description 1327

P

heory of Operation

T

onstruction

C
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

.0 PURPOSE AND SCOPE OF MANUAL

1

his manual is provided to guide users of Model 1305D

T

nd 1327D pressure testing devices in:

a
(1) installing the equipment
(2) Routine operations

he instructions in this manual are designed to be per-

T

ormed by qualified instrument maintenance personnel.

f
Ashcroft Inc. does not recommend troubleshoot ing or

repairs beyond the scope of this manual. Problems that
cannot be remedied by following the instructions in this

anual should be referred to the manuf acturer. Immediate

m

ssistance can often be supplied by telephone. Defectiv e

a

omponents will be repaired or replaced by the manufac-

c
turer at his discretion and will be returned to the user by
the same mode of shipment. Airmail or air express is rec­ommended 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: [phone]
Fax: [phone]

www.ashcroft.com
email: [e-mail]

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 misapplica­tion which could result in personal injury or property dam­age. Personnel responsib le 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 availab le 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
applied pressure will never exceed the upper range limit.

2. Vibration – Excessive vibration could cause a loosen­ing of components and abnormal wear resulting in loss of

ument accuracy or failure to provide v alid data.

instr

3. Temperature – Operation of the instrument in an envi­ronment where temperatures are in excess of design rat­ings may result in loss of accuracy and failure .

ust be resis-

4. Process – Pressure boundary mater

ials m
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

imary pressure standards, used for

are precision b

uilt pr
testing, setting, calibrating or repairing pressure measur­ing devices within the test points 15 psi (100kPa) to
10,000 psi (70,000kP

a).

he deadweight tester consists of a two stage hydraulic

T

ump containing a manifold which is pressurized during

p

peration. Integral to the pump is a shuttle valv e that

o
allows the operator to regulate the speed of pressure
increase. One connection to the manifold includes a cylin­der and a free-floating precision machined piston with a
plate for holding calibrated weights. A second connection
to the manifold accommodates a gauge or other pressure
measuring device to be calibrated or checked.

ncorporated into the manifold is a hand operated dis-

I

lacement valve that allows small adjustments in fluid v ol-

p

me to be made without further operation of the pump

u
handle or release valve.

The tester is dual range having two interchangeable piston

nd cylinder assemblies. One is a low pressure piston

a

aving an effective area five times larger than that of the

h
high pressure piston. The low pressure piston is used for
making measurements below 2,000 psi (14,000 kPa). The
high pressure piston, with an area 1/5 that of the low pres­sure piston, is used to measure pressure through 10,000
psi (70,000 kPa). The weight masses are pre-measured
and identified with the pressure values they produce when
operated with the interchangeable piston and cylinder
assemblies.

Pressure calibration points produced by the deadweight
tester are accurate to within ± 0.1% of the reading certified
traceable to the N.I.S.T. The tester provides consistent,
repeatable accuracy, maintaining its pressure for an appre­ciable length of time regardless of temperature changes,
slight leaks in the pressure system, or changes in volume
of the pressurized system due to movement of a Bourdon
tube or other device.

A hand jack set, three wrenches, spare O-rings, and a
special adapter for making connections to pressure outlets
that do not accommodate cone pipe seating, are included
with each unit.

All deadweight testers are supplied with lower and back
connection offset pipe assemblies, with pipe adapters for

1

⁄

4 NPT or

1

⁄

2 NPT connections.

An all metal, double-latched, top handle carrying case is
supplied with the complete tester for all fittings and attach­ments. Deadweights are packed in metal, double-latched
storage-carrying boxes.

2.1.2 Theory of Operation – 1305D

The theory behind a deadweight tester can be expressed
as simply as force acting upon a known area. Pressure

y the manifold, to the

produced b

y the pump is distrib

base of a precision machined piston and to a de

uted b

vice being
calibrated or checked. Pre-selected weights loaded onto
the piston platfor

m are acted upon b

y g

a

r

vity and de

velop
a force that is to be equally opposed by the fluid pressure
from the pump. When equilibrium is achieved, the pres­sure value is known, it being a direct result of the sum of
the forces from the weights, piston platf orm and the piston
divided by the effective area of the piston and cylinder
assemb

ly.

With the 1305D two piston and cylinder assemblies are
supplied, one having an effective area 1/5 of the other.
When using the smaller piston and cylinder assembly, five
times more pressure is required to oppose the force of a

ravity. For this rea-

constant mass being acted upon b

y g
son the masses supplied with the tester are stamped with
two pressure values, the value being contingent on the

e area of the piston and cylinder assemb

ectiv

eff

ly selected

.

.1.3 Specifications – 1305D

2

ccuracy:

A

ylinder assemblies within 0.1% of reading. Weight toler-

c

ombined tolerance of weights and piston and

C

ance within 0.05% of mass. Piston and cylinder is within

0.05% of rated mean effective area.
Deadweight: Non-magnetic die cast zinc alloy. Total
weight to produce maximum pressure of 10,000 psi
(70,000kPa) is 125 lbs. (56.7 kg).
Piston & Cylinder Assemblies: High strength stainless

teel piston and cylinder with brass collar and aluminum

s

eight platform.

w

ump:Two stage, lev er operated gener ates 10,000 psi

P

(70,000 kPa) with 28 pounds (12.7 kg) of force on lever
handle.
Pump Body: Aluminum, corrosion inhibited and coated
with baked blue epoxy finish.
Shuttle Valve: Stainless steel bypass valv e that controls
rate of pressure increase and reduces operator effort
when working at high pressure.
Displacement Valve: A fine pitched threaded valve rod
permitting vernier adjustments to fluid volume and provide
precise pressure changes or adjustment of piston travel.
Limit stops prevent rod removal during normal operation.
Mounting: Four bench mounting holes located in base for
positive mounting to any level surface.
Instrument Connections: Tw o coned pipe assemb lies
provide vertical calibration capability for back and low er
connected gauges. Standard

1

⁄4 inch internal NPT and 1⁄2
inch inter NPT fitting adapters are supplied.
Operating Fluid: 1305D – Light grade machine oils, auto­motive petroleum base SAE 20 oils or other equivalent flu­ids suitable for use with Buna N O-ring materials. 1.5 pints
required (.7 liters).

1305DH – Most hydraulic oils of phosphate ester base,
brake fluids, skydrol, pydraul etc., suitable for use with
Butyl or Ethylene-Propylene O-ring materials. 1.5 pints
required (.7 liters).

2.1.4 Certification:
Standard (CD-3)

– Certificate of NIST traceability
(accuracy/traceability statement only).
Optional (CD-5) – Certification document includes actual
(as left) weight values for each weight and piston, piston
diameter values, environmental data and NIST test
numbers. Set includes numbered weights.

2.2 Product Description 1327D

2.2.1 Construction

The Ashcroft T

ype 1327D Portable Test Pumps are
rugged, versatile pressure transfer standards, used for
testing, setting, calibrating or repair

ing pressure measur

­ing devices with ranges up to 10,000 psi (70,000kP a). A
selection of high accuracy test gauges, with a precision of
±0.25% of span, are supplied as the standard to which the
device under test is compared.

aulic

The main component to the tester is a tw

o stage h

ydr
pump containing a manifold which is pressurized during
operation. Integral to the pump is a shuttle valv e that
allows the operator to regulate the speed of pressure
increase. One connection to the manifold has a straight
pipe with a precision test gauge attached serving as the

erence standard. A second connection to the manif

ref

old
accommodates a gauge or other pressure measuring
device to be calibrated or check ed. Incorporated into the

e that

old is a hand oper

manif

ated displacement v

alv
allows small adjustments in fluid volume to be made with­out further operation of the pump handle or release valve.

Model Piston Assembly Piston Net

Number Pressure Range Piston Area Value Number of Weights by Value Weight

L-5 L-10 L-20 L-40 L-100

psi Type Low High Low High Low

High

H-25 H-50 H-100 H-200 H-500

lbs. kg.

1305D-10
1305DH-10 15/200 75/1000 5 25 1 3 2 3 -- 60 27
1305D-20
1305DH-20 15/400 75/2000 5 25 1 3 2 3 2 70 32
1305D-30 .

0625 in.2.0125 in.

2

1305DH-30 15/600 75/3000 (.4032) (.0806) 5 25 1 3 2 3 4 85 39

305D-50

1
1305DH-50 15/1000 75/5000 5 25 1 3 2 3 8 105 48
1305D-100
1305DH-100 15/2000 75/10000 5 25 1 3 2 3 18 175 80

Model Piston Assembly Piston Net

Number Pressure Range Piston Area Value Number of Weights by Value Weight

M

kg/cm2Type Low High Low High Low High

METRIC RANGES ARE NO LONGER AVAILABLE – INFORMATION FOR REFERENCE ONLY

L-.5 L-1 L-2 L-4 L-5

H-2.5 H-5 H-10 H-20 H-25

lbs. kg.

1305DM-20
1305DMH-20 1/20 -- .5 2.5 1 1 2 1 2 63 29
1305DM-100
1305DMH-100 1/20 5/100 .5 2.5 1 1 2 1 2 65 30
1305DM-150 .

0625 in.2.0125 in.

2

1305DMh-150 1/30 5/150 (.4032) (.0806) .5 2.5 1 1 2 1 4 75 34
1305DM-350
1305DMH-350 1/70 5/350 .5 2.5 1 1 2 1 12 105 48
1305DM-700
1305DMH-700 1/140 5/700 .5 2.5 2 1 2 1 26 175 80

Model Piston Assembly Piston Net

Number Pressure Range Piston Area Value Number of Weights by Value Weight

bar Type Low High Low High Low High

L-.5 L-1 L-2 L-4 L-5

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
1305DB-350
1305DBH-350 1/70 5/350 .5 2.5 1 1 2 1 12 105 48
1305DB-700
1305DBH-700 1/140 5/700 .5 2.5 2 1 2 1 26 175 80

Model Piston Assembly Piston Net

Number Pressure Range Piston Area Value Number of Weights by Value Weight

Pascal T

ype

Low

High

Low

High

Low High

L-50 L-100 L-200 L-400 L-500

H-250 H-500 H-1000 H-2000 H-2500

lbs.

1305DA-2000
1305DAH-2000

100/2000

--

50 250

1

2126329

1
1305DA-10000
1305DAH-10000
1305DA-15000
1305-DAH-15000

100/2000 500/10000 50 250 1 1 2 1 2 65 30

.

0613 in.2.0123 in.

2

100/3000 500/15000 (.3954) (.0791) 50 250 1 1 2 1 4 75 34
1305DA-35000
1305DAH-35000

100/700 500/35000

50 250 1 1 2 1 12 105 48
1305DA-70000
1305DAH-70000

Dimensions in ( ) are square centimeters

100/14000 500/70000 50 250 2 1 2 1 26 175 80

kg

.

TABLE 2-1

ressure values produced by the pump are able to be

P

learly read to within ±0.25% accuracy of the span of the

c

recision test gauge selected for testing. Certification of

p
test gauge accuracy traceable to the N.I.S.T., is a v ailab le
upon request. A hand jack set, three wrenches, spare O­rings, and special adapter for making connections to pres­sure outlets that do not accommodate cone pipe seating,
are included with each unit.

Test pump accessories include lower and back connection
offset pipe assemblies, with pipe adapters for

1

⁄

4 and

1

⁄

2

NPT connections.

n all metal, double-latched, top handle carrying case is

A

upplied with the complete tester to hold all fittings and

s
attachments.

2.2.2 Theory of Operation – 1327D

The operating principle behind the 1327D Test Pump is a
simple form of comparison. Pressure produced by the
pump is equally distributed by the manifold to a test gauge
and to a device being calibrated or check ed. The reading
of the test gauge serves as the reference to which other
device readings are compared against.

Selection of the test gauge range is the determining factor
in establishing the precision to which a comparison check
is to be made. Test gauge accuracy is expressed as a per­centage of its span.

Proper selection of the test gauge range must be made to
minimize the amount of the unit error. If a 5,000 psi
(35,000kPa) range test gauge were used to test de vices
whose span values were less than a fourth of the test
gauge range, the unit error of 12.5 psi (87kPa) would be
greater than 1% of the test pressure. Therefore, it is impor­tant to select a test gauge that has a full scale range equal
to or only slightly in excess of the pressure value to be
measured.

2.2.3 Specifications – 1327D
Accuracy:

Test Gauges: Ashcroft solid front type 45-1082-02L-XAZ,

1

4

⁄

2˝ dial size (120mm case). Bourdon tube materials for

1

⁄

4% of 1% of test gauge span.

1327D and DH are bronze and Monel. Bourdon tube
materials for 1327DO are bronze and Monel.

Pump: T

wo stage, lev er operated gener ates 10,000 psi
(70,000kPa) with 28 pounds (12.7kg) of force on lever
handle.

Pump Body:Alumin

with bak

ed blue epoxy finish.

um, corrosion inhibited and coated

Shuttle Valve: Stainless steel bypass valv e that controls
rate of pressure increase and reduces operator effort
when working at high pressure.

Displacement Valve: A fine pitched threaded valve road
permitting vernier adjustments to fluid volume to provide
precise changes. Limit stops prevent road remo v al during
normal operation.

Mounting: F

our bench mounting holes located in base f

or

positive mounting to any level surface.

o coned pipe assemblies

Instrument Connections: T
provide vertical calibration capability for back and low er
connected gauges. Standard
inch inter

nal NPT fitting adapters are supplied.

w

1

⁄

4 inch internal NPT and

1

⁄

2

Operating Fluid: 1327D – Light grade machine oils, auto-

e petroleum base SAE 20 oils or other equiv

motiv

alent flu­ids suitable for use with Buna N O-ring materials. 1.5 pints
required (.7 liters).

327DH –Most hydraulic oils of phosphate ester base,

1

rake fluids, skydrol, pydr aul etc., suitab le for use with

b

utyl or Ethylene-Propylene O-ring materials. 1.5 pints

B
required (.7 liters).

1327DO – Distilled water with compatible corrosion

nhibitor. A .1% solution of sodium dichromate is a suitable

i

nhibitor. 1.5 pints required (.7 liters).

i

2.2.4 Certification:
Standard –

Master gauges are calibrated on NIST trace-

able standards, no certification documentation provided.
Optional (CD-4) – Individual certified calibration chart

(NIST traceable) for each master gauge.

.0 SETTING UP THE TESTER

3

3.1 Inspection

3.1.1 Component Check 1305D

The deadweight tester, as shipped from the f actory, con­tains all of the components necessary for operation except
pump fluid. Depending upon the model and pressure
range selected, the total number of weights, weight bo xes
and piston and cylinder assemblies will vary. Refer to
Specifications, Section 2.1, Table 2-1 for model clarifica­tion.

3.1.2 Component Check 1327D

The portable test pump, as shipped from the factory, con­tains all of the components necessary for operation except
pump fluid. Depending upon the model and pressure
range selected, the total number and their ranges will vary.
Refer to Specifications , Section 2.2, Table 2-3 f or model
clarification.

3.1.3 Claim for Missing or Damaged Goods

In the event it is determined that an item is missing or
damaged, contact Customer Service immediately at the
address indicated in Section 1.0. Damaged merchandise
and the packaging materials must be held for inspection
by authorized Ashcroft Inc. personnel or the responsible
carrier. Disposition of damaged or missing goods will be
determined after inspection has been performed on loca­tion, or at the discretion of the manufacturer ,at the factory.
Inspection may be waived if circumstances, as judged by
the manufacturer , preclude its necessity.

3.2 Installation Type 1305D

3.2.1 Set-up Pr

ocedure (See Figure 2-1)

To remove the tester from the case, release the spring clip,
depressing the clip by hand, grasp the pump reservoir and
lift up the back end of the pump assembly.

ving removed the pump assembly from its carrying

Ha
case, remove the two plastic shipping plugs .

Select a lower connection (64) or back connection (66) off­set pipe and connect to inner pump body outlet as shown
in Fig. 2-1.

Remove the reservoir filler plug (35) and fill reservoir with
operating fluid.

3.2.2 Bench Space Required (See Figure 1-1)

w a space:

Allo
10 inches (25.4 cm) width
27 inches (68.6 cm) depth
22 inches (55.9 cm) height – allows for maximum load of
deadweights

e Space Required

3.2.3 Stora
One Tester Bo x:

101⁄

g

2 inch (2.6 cm); 22

1

⁄

2 inch (57 cm) depth; 10 inch (25

cm) height