BULLETIN DU-1 1279
• Solid front case design, field
convertible to hermetically sealed
or liquid filled style
• Pressure ranges from vacuum —
30,000 psi
• Select from various socket and
Bourdon tube materials
• Micrometer adjustable pointer
• 400 Series stainless steel movement
wears better for longer life
• Teflon-coated pinion for longer life
• Patented Duratube
™
with as-welded
tube construction controls stresses
for longer life
• PLUS!
™
Performance Option:
- Liquid-filled performance in a dry gauge
- Fights vibration and pulsations without
liquid-filled headaches
- Order as option XLL
The Ashcroft
®
Duragauge
®
pressure
gauge is the finest production gauge on
the market for industrial use where pre-
cise indications are required. The product
line offers a wide variety of case styles,
Bourdon tubes and pressure ranges to
meet your application needs .
With the component combinations avail-
able in the Duragauge gauge line, over
ten million variations are possible to serve
the needs of all types of industries, includ-
ing process, power, nuclear, aerospace
and cryogenics.
PRODUCT SPECIFICATIONS
Model Number:
1279
Accuracy:
1
⁄
2
% full scale (Grade 2A,
ASME B40.100)
Ranges:
Vac., compound to 30,000 psi
Dial Size:
4
1
⁄
2
˝ diameter
Case Material:
Black phenolic, solid front
Weather
Protection:
Dry Case: IP54
Liquid filled or hermetically
sealed case: IP 65
Ring:
Threaded reinforced black
polypropylene
Window:
Glass
Dial:
Aluminum, white background,
black figures and intervals
Pointer:
Micrometer adjustable
Movement:
Rotary, 400 SS, Teflon
®
coated
pinion gear and segment
Bourdon Tube
C510 Phos. bronze/brass (A)
(1)
and Socket:
316L SS/steel (R)
(2)
316L SS/316L SS (S)
(2)
K Monel/ Monel (P)
(2)
Conn. Size:
1
⁄
4
˝,
1
⁄
2
˝ NPT
Conn. Location:
Lower or back
OPTIONAL FEATURES
Fill:
L-Glycerin-Standard
XGV-Silicone -Optional
XGX-Halocarbon-Optional
PLUS!
™
Performance:
XLL
Hermetically
Sealed, IP65:
H
Flush Mounting
Ring:
X56
Receiver Gauge:
XPR
Shatter Proof
Glass Window:
XSG
Acrylic Window:
XPD
Red Set Hand:
XSH
Maximum
Pointer:
XEP
(1)
Joints silver brazed
(2)
Joints welded
Type 1279 Duragauge
®
Pressure Gauge
Available With
PLUS!
™
Performance Option
Ashcroft Inc., 250 East Main Street, Stratford, CT 06614 USA
Tel: 203-378-8281 • Fax: 203-385-0408
email: [email protected] • www.ashcroft.com
All specifications are subject to change without notice.
All sales subject to standard terms and conditions.
© Ashcroft Inc. 2013 Rev. 09/13
Pressure – psi
Range
Figure
Minor
interval
Graduation
0/15
1
0.1
0/30
5
0.2
0/60
5
0.5
0/100
10
1
0/160
20
2
0/200
20
2
0/300
50
2
0/400
50
5
0/600
50
5
0/800
100
10
0/1000
100
10
0/1500
200
20
0/2000
200
20
0/3000
500
20
0/5000
500
50
0/6000
500
50
0/10,000
1000
100
0/20,000
2000
200
0/30,000
5000
200
STANDARD RANGE TABLE*
*
Full standard and metric equivalent range table
available on our web site.
TEMPERATURE LIMITS
Ambient
Process
Storage
Dry
–20/200°F
(1)
–20/250°F
(1)
–40/250°F
(–29/93°C)
(–29/121°C) (–40/121°C)
LF
20/150°F
20/200°F
0/150°F
(glycerin)
(7/66°C)
(7/93°C)
(–18/66°C)
–40/150°F
–40/200°F
–40/150°F
(silicone)
(–40/66°C)
(–40/93°C)
(–40/66°C)
–40/150°F
–40/200°F
–40/150°F
(halocarbon)
(–40/66°C)
(–40/93°C)
(–40/66°C)
Note:
Other than discoloration of the dial and hardening of the
gasketing that may occur as ambient or process temperatures
exceeds 150°F, non-liquid-filled gauges with standard glass win-
dows, can withstand continuous operating temperatures up to
250°F (121°C). Liquid-filled gauges can withstand 200°F (93°C)
but glycerin fill and acrylic window will tend to yellow. Accuracy
at temperatures above or below the reference ambient tempera-
ture of 68°F (20°C) will be affected by approximately .4% per
25°F. Gauges with welded joints will withstand 750°F (450°F
(232°C) with silver brazed joints) for short times without rup-
ture, although other parts of the gauge will be destroyed and
calibration will be lost. For continuous use and for process or
ambient temperatures above 250°F (121°C), a diaphragm seal
or capillary or siphon is recommended.
(1)
Available for temperatures below –20°F, see
Product Information page ASH/PI-21B for details.
Содержание BN 5-12 Series
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