Caisson Gauges

±.25% F.S. (Grade 3A)*
Typically used in hyperbaric chambers, decompression chambers and the like. Perma-Cal® caisson gauges incorporate a Bourdon tube sealed within a capsule. Unlike standard pressure gauges which indicate the pressure relative to the ambient environment, Caisson gauges indicate the pressure relative to the pressure within the capsule.
gENERAL sPECIFICATIONS
TYPICAL APPLICATIONS
Hyperbaric chambers
Decompression chambers and more...
RANGE AVAILABLITY
250 to 3,500 FSW (or equivalent)
Single Scale: FSW
Dual Scale: MSW | FSW
TEMPERATURE RESISTANCE
Media Temperature: -65°F to 250°F
Ambient Temperature: -65°F to 190°F
LIFETIME LIMITED WARRANTY
Lifetime warranty that the Bourdon tube will not malfunction due to wear.
1 year from delivery or 18 months from date of manufacture against defects in materials and workmanship.
CASE CONFIGURATIONS
Materials:
ABS (acrylonitrile butadiene styrene)
Sizes, Types and Colors:
6", 8.5"
Front Flange, No Flange, Rear Flange
Black, Blue, Green, Red, White, Yellow
OTHER SPECIFICATIONS
Helically-wound Bourdon tube sealed within a capsule
Magnetically driven pointer
Oxygen cleaned
Solid front case
Window Construction: Acrylic or Tempered Glass
Burst Pressure: 500% F.S. pressure or 25,000 psi
Connection Material: 316 SS
Wetted Materials:
Inconel X-750
300-series SS
Silver Braze
Overpressure w/o calibration shift:
50% for gauges ≤ 5,000 psi or equivalent
* All accuracy options are not available in all ranges, see bulletin.