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+ REPAIR & RECALIBRATION |
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GAUGES>> |
Safety
Pattern |
Intended
Service
Where the pressure medium is a
volatile gas, such as oxygen or
acetylene, a safety pattern gauge
should be used, where the gaseous
medium is not volatile, such as
air or nitrogen, and the pressure
is greater than 25 bar the Fig.
90 gauge (safety pattern) should
be used. The essence of this type
of gauge is safety. |
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| Normal
Sizes |
60,
80, 100, 150, 200 and 250mm |
| Accuracy
Class |
For
63mm: ± 1.6% Maximum Scale
Value
For 80 to 250mm: ± 1.0% Maximum
Scale Value
EN 837:1998 |
| Design |
EN
837:1998 |
| Scale
Ranges |
-1
to 1000 bar or equivalent other units
of pressure or vacuum |
| Working
Pressure |
| Steady |
3/4
of full scale value |
| Fluctuating |
2/3
of full scale value |
| Short
time |
Full
scale value |
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| Operating
Temperature |
| Ambient |
TMIN
–25 to TMAX +60 ºC |
| Medium |
TMAX
+60 ºC |
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| Temperature
Error |
| Additional
error when temperature of the
pressure element deviates from
+20 ºC |
| Rising
Temperature |
+0.3%/10
ºC |
| Falling
temperature |
-0.3%/10
ºC |
| Percentage
of the true scale value |
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STANDARD
FEATURES |
| Pressure
Connections |
| Radial
or back entry |
| Material |
Brass |
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| Pressure
Element |
| Material |
Phosphor
Bronze up to 40 Bar, Stainless
Steel from 40 to 1000 Bar |
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| Movement |
| Material |
Brass
with Nickel Silver pinions and
arbors. |
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| Dial |
Aluminium
with black lettering on white. With
Pointer stop pin |
| Pointer |
Black
aluminium pointer |
| Case
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Steel |
| Window |
Clear
plastic or laminated safety glass |
| Optional
Extras |
Stainless
Steel casing, Stainless Steel wetted
Parts, Monel wetted parts, Oxygen
Service |
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Saunders & Weeks (Bristol) Ltd, 265-267
Church Road, Redfield, Bristol BS5 9HU, United Kingdom
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