Pilgrim Pressure Gauges Process - Manual (Page 4)

Edward Ashcroft introduced the Bourdon tube
pressure gauge to American Industry 140 years
ago. Since that time, we have developed thou-
sands of improvements and over a hundred
patents furthering the development of Ashcroft
pressure instruments. From the very beginning,
we have maintained our reputation for quality,
product performance, and technical innovation
that is the envy of all others in the industry. We
are confident of our manufacturing processes
and the design of our pressure gauge systems.
So confident, that we guarantee the Duragauge
pressure system to be free of leaks for 10 years
when installed and operated with the recommen-
dations outlined in ASME B40.1 Of course our
standard 1 year warranty on materials, work-
manship, and all other parts, is still in effect.
Millions of Ashcroft Duragauge pressure
gauges continue to deliver proven performance
in critical process applications throughout the
world. You can depend on our commitment to
quality – just what you’ve come to expect from
the leader in pressure technology – the people
who design, produce, and sell Ashcroft products.
For a copy of our warranty call or write:
Dresser Instrument Division
250 East Main Street
Stratford, CT 06614-5145
203-378-8281
Ask for Customer
Service.
Warranty & Movement
Ashcroft
®
Duragauge
®
Pressure Gauge
The Ashcroft ® Stainless Steel Rotary Geared
Teflon ® S Movement is another “first” in gauge
manufacture. It is truly innovative with its thinner
plates and segment, elimination of bushings,
and low friction Teflon S coating on wearing
parts. The shock resistance and stability of the
Duragauge movement has been enhanced by
staking the movement top and bottom plates.
A Teflon S coating
is applied to the pin-
ion gear, pinion
shaft, link screws
and segment shaft.
These critical com-
ponents translate
the motion of the
Bourdon tube tip
into the rotating
pointer motion.
Minimal friction is
essential for
reduced wear.
The coating also serves to protect wear surfaces
from outside ambient conditions.
A specially formulated lubricant is applied to all
wear points. Wear is further reduced because
the moving parts are light weight. The curved tail
segment provides easy calibration by mini-
mizing the effect of the span adjust-
ment on zero.
LINK SCREW
CAPTIVE NUT
SEGMENT SHAFT
TOP PLATE
PINION
SEGMENT
HAIR SPRING
PILLAR BOTTOM PLATE
LINK
BUSHING
Stainless steel rotary
geared Teflon
® coated
movement
4
Teflon ® – DuPont Trademark