PowerFlex Movement

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PowerFlex™ Movement - DFS Gauges

PowerFlex

Movement

• Only Ashcroft ® pressure

gauges offer this superior

movement technology.

• Test proven and field

proven to last longer!

• More shock and vibration

resistant than conventional

movement products.

a Halliburton company

BULLETIN PF-1


PowerFlex Movement

The Ashcroft ® PowerFlex movement

is only available in the wide

variety of Ashcroft pressure gauges.

The PowerFlex movement is

designed to resist the effects of

shock, vibration and pulsation,

thereby increasing the life of the

pressure gauge. This patented

movement is suspended between

two springs – the Bourdon tube

above and the linkwire below. This

unique suspended construction isolates

the gauge movement from the

socket, which is the normal travel

path for shock and vibration.

Therefore, the destructive forces

that are transmitted to the precision

moving parts are greatly reduced.

A conventional geared movement

and bracket assembly consists of

13 parts. The Ashcroft PowerFlex

movement design eliminates the

need for nine of these components.

The elimination of this excess

weight reduces the wear on bearing

and gearing surfaces.

The benefits of this unique movement

design are superior performance

and extended gauge life, especially

in applications where vibration and

pulsation are constant factors.

Ashcroft pressure gauges with the

patented PowerFlex movement

have been laboratory tested and

most importantly, field tested and

proven for over 20 years.

200 Harrison Road

Berea, KY 40403

Tel: (859) 986-9333

Fax: 1-800-28BEREA

(1-800-282-3732)

www.ashcroft.com

a Halliburton company

Specifications subject to change without notice.

Subject to standard terms and conditions of sale.

© Instrument Division, Dresser Equipment Group, Inc.

5MSP 9/00 1P12/96

ALL GAUGES ARE NOT CREATED EQUAL . . .

Ashcroft PowerFlex Movement

The Ashcroft patented PowerFlex movement

addresses performance problems common to

conventional movement design. The unique

suspended construction isolates the gauge

movement from the socket, which is the normal

travel path for shock and vibration. The bourdon

tube and the linkwire cushion the movement

under stress conditions, reducing wear on the

silicone-lubricated segment and pinion surfaces.

The result of this design is superior

gauge performance and extended gauge life.

(8 pound – foot blow)

Pointer

Shift %

5

4

3

2

1

0

Pointer

Shift %

3

2

1

0

3

2

1

0

Ashcroft Gauge Ashcroft Gauge Conventional Conventional

PowerFlex PowerFlex Brass All Plastic

Movement Movement Movement Movement

Polyester Segment Brass Segment Gauge Gauge

Conventional Movement

This movement design was introduced in 1924

and has been the industry standard since that

time. The movement pictured here is typical of

those used by most manufacturers of commercial

pressure gauges.

PowerFlex MOVEMENT – PROVEN PERFORMANCE

PRESSURE GAUGE ENDURANCETESTS*

.1

(8 pound – foot blow)

Conventional

.5

10 20 30

(Millions of Cycles)

(Millions of Cycles)

SHOCK

1-3

Ashcroft Gauge

PowerFlex Movement,

Metal Segment

VIBRATION

1-5

Conventional Gauge and Movement

5 10

SHOCK: 10 to 50 times

more resistant.

VIBRATION: Can withstand

over 10 times

more vibration.

PULSATION: After ten

million cycles, less than

1% pointer shift.

(Conventional movements at 1/2 the

cycles have 3 times amount of wear.

Ashcroft Gauge

PowerFlex

Movement

.5 All Plastic Polyester Segment

.2

8000 300

(Millions of Cycles)

Ashcroft Gauge, PowerFlex Movement, Polyester

Segment & Ashcroft Gauge, PowerFlex Movement,

Metal Segment

PULSATION

These tests offer conclusive proof that the Ashcroft PowerFlex movement significantly reduces the

wear and tear of gauge internals. These gauges better resist shock, vibration and pulsation, and have

an increased gauge life. The benefits to you, the customer, mean:

• Savings in the cost of a replacement gauge.

• Savings in the labor cost involved in replacing the gauge.

• Savings in reduced downtime.

• Savings in reducing the chance of damaged or lost equipment due to a

non-functioning or an incorrect reading gauge.

Ashcroft pressure gauges have earned a reputation for durability and accuracy over the past 125 years.

Ashcroft gauge superior performance is standard – just what you would expect from an Ashcroft product.

*Tests were based on 2˝ lower connect gauges.

(120 Hz-.010 displ.)

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