Pilgrim Pressure Gauges Process - Manual (Page 5)

PLUS! ™ Performance Duragauge ®
An exclusive, new, optional feature
provides virtually liquid-filled perfor-
mance in a dry gauge.
The Ashcroft PLUS! ™ feature is a
patent-pending design incorporated into
the industry-standard Ashcroft pressure
gauge.
PLUS! is available in any Dura-
gauge case style material or range.
Historically, pulsation and vibration
have reduced gauge life and made
gauges difficult to read.
Customers have had no alternative to
liquid-filled gauges to solve vibration
and pulsation problems, until now!
Advantages Versus
Liquid-Filled Gauges
• Saves money
- Lower purchase price versus liquid-
filled gauges
- Eliminates costly specialty fills
- Allows easy standardization to
reduce mis-applications
• Eliminates possibility of leaks
• Lighter weight . . . easier to handle
• Eliminates liquid-fill lines . . .
easier to read
• Easy recalibration
• Wider ambient temperature range
than glycerin
• Eliminates disposal and environmen-
tal issues
Advantages Versus Dry Gauges
• Steady pointer . . . same as liquid-
filled gauges
• 100% longer life gauges . . .
reduces gauge usage 50%!
Other Duragauges
Ashcroft
®
Duragauge
®
Pressure Gauge
High Pressure Duragauge ®
The Ashcroft high pressure Dura-
gauge has a helical wound Inconel
Bourdon tube which is capable of with-
standing vibration without a zero shift or
change in calibration. Because of the
length of the helical tube, stresses are
minimized and the tip travel increased;
this permits the use of a low ratio move-
ment, which decreases wear from fric-
tion and increases gauge life. For use
on high pressure test applications, metal
and concrete water cutting equipment,
and other high pressure applications.
Features of the gauge include ASME
B40.1, grade 2A, 1 ⁄
2
of 1% full scale, 6˝
dial, lower or back connection, solid
front aluminum case for wall or flush
mounting. Inconel 718 Bourdon tube
and 316 stainless steel socket is stan-
dard. A hermetically sealed, field liquid-
fillable case is standard. The Ashcroft
high pressure Duragauge is available in
ranges of 50,000 psi, 80,000 psi, and
100,000 psi with a standard
1 ⁄
4
˝ high
pressure tubing connection.
Receiver Duragauge ®
Used in conjunction with pneumatic
transmitters, Ashcroft receiver gauges
indicate pressure, temperature, flow, or
any information that can be transmitted
by proportional variations in air pressure.
For information concerning other receiv-
er gauges offered, consult Customer
Service, Stratford, Connecticut.
Liquid-Filled Duragauge ®
Liquid-filled Duragauges have tradi-
tionally been used in applications where
there is excessive vibration and pulsa-
tion. Vibration can cause rapid move-
ment resulting in loss of accuracy and
possibly complete destruction of the
gearing. Pulsation can generate mil-
lions of pressure cycles causing Bour-
don tube fatigue and reduced service
life. The field conversion kit contains an
Ashcroft patented elastomeric back
which provides compensation for ambi-
ent temperature variation while provid-
ing all the features of a blow-out back.
The sealed case completely excludes
dusty or corrosive environmental condi-
tions. Since vibration and pulsation fre-
quently occur together, all liquid filled
Duragauges are fitted with a throttle
plug screwed into the socket. This can
easily be removed or changed for vis-
cous or particulate containing media.
Seven sizes are available from .006 to
.070 diameter.
5
PLUS!
Performance