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CASE CONSTRUCTION |
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OUTER CASE: |
Injection molded,
glass fiber reinforced, UV-normalized polyamide; black, with integral solid front bulkhead |
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INNER CASE (SAFETY
CELL): |
Deep drawn 304
stainless steel secured to outer case by a series of stainless steel studs and nuts |
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LENS: |
Standard: High
impact, injection molded acrylic
Optional: Multi-layer safety glass |
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LENS RING: |
Glass fiber reinforced polypropylene, threaded |
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BLOW-OUT BACK: |
Glass fiber
reinforced polyamide secured to safety cell by integral snap-on clips |
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CASE-SOCKET SEAL: |
The system is
secured in the safety cell by means of a peripheral TIG weld at the case-socket joint. |
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GASKETS: |
EPDM O-rings for
glycerine filling; request details for other fill fluids. |
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COMPENSATING DIAPHRAGM: |
The molded EPDM
diaphragm is bonded to the blow-out back and is glycerine compatible; request details for
other fill fluids. |
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SIZE: |
4½" in the
configurations illustrated above. (Note that configurations B and T are not fillable.) |
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PROTECTION: |
IP 65 |
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SYSTEM |
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SOCKET: |
Cold rolled 316L
stainless steel |
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ELASTIC TUBE: |
316L stainless
steel, seamless, drawn and heat treated, stress relieved, in a precision milled slot and
deep TIG welded to socket; C-tube for ranges up to 0....1000 psi; multi-turn spiral tube
for ranges 0...1500 psi and higher |
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MOVEMENT: |
303/304 stainless
steel |
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DIAL: |
Aluminum, white coated, with black scale and
numerals |
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ZERO: |
Gauge shows true
zero. There is no take-up. |
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POINTER: |
Aluminum, black
anodized with zero reset feature |
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INTERNAL STOPS: |
Internal stops
prevent disengagement of sector and pinion. A rigid stop acts in the event of
over-pressure. A spring-buffered stop acts in the event of rapid de-pressurization or line
vacuum. |
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CONNECTION (NPT) |
SIZE |
STANDARD |
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4½" |
½" or ¼" |
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Ranges from
0...10,000 through 0...30,000 are also available with 9/16" - 18 LH connection for
use with collar and gland for medium and/or high pressure service. |
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ACCURACY |
For all ranges up to
0...10000 psi:
Grade 2A (ASME B40.1 - 1998), i.e., maximum error of + 0.5% of span throughout the scale |
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For ranges 0...15000
psi through 0...30000 psi:
Grade 1A (ASME B40.1 - 1998), i.e., maximum error of + 1.0% throughout the scale |
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Note: Accuracy is
applicable to a dry gauge. Liquid filling may reduce accuracy by one grade. |
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PROCESS DATA |
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AMBIENT TEMPERATURE
RANGE * : |
-15...+150 F |
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PROCESS TEMPERATURE
RANGE * : |
-22...+300 F |
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MAXIMUM OPERATING
PRESSURE ** : |
fluctuating: 90% of
full scale
steady: 100% of full scale |
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MAX. PERMISSIBLE
OVER-PRESSURE ** : |
30% of full scale |
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| * |
Applicable to a dry
gauge; for liquid filled gauges see fill fluid table. |
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| ** |
Applicable to all ranges
through 0...20000 psi. For the range 0...30000 psi, maximum operating pressure is 75% and
permissible over-pressure is 10% of full scale. |
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FILL FLUIDS |
FLUID |
TEMPERATURE RANGE (ambient and process) |
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Pure Glycerine* |
+60.....150 F |
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Silicone* |
-50.....150 F |
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Hydrofluorocarbon |
-75.....150 F |
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* Not for use with oxygen or any oxidants! |
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Only the
safety cell and the shallow space between outer case bulkhead and lens are liquid filled.
This design therefore requires significantly less fill fluid than most other process
gauges. |
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Note: Configurations B and T are not fillable. |
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DIMENSIONS, Case |
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a |
a1 |
b |
c |
d |
d1 |
E |
e |
f |
h1 |
p |
ch |
| mm |
13 |
27 |
86 |
42 |
148 |
126 |
137 |
31 |
6.4 |
66.5 |
106 |
22 |
| inch |
0.51 |
1.06 |
3.39 |
1.65 |
5.83 |
4.96 |
5.39 |
1.22 |
0.24 |
2.62 |
4.17 |
0.87 |
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DIMENSIONS, Connection |
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¼" NPT |
L |
h |
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½" NPT |
L |
h |
mm |
15 |
98.5 |
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mm |
20 |
103.5 |
inch |
0.59 |
3.88 |
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inch |
0.79 |
4.07 |
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