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IMCA D 018 Examination & Testing Guidance

"CAISSUB" Wet Area Caisson Gauge - 160mm Diameter Waterproof Case

160mm diameter "Caissub" premium design caisson pressure gauge for mounting inside wet bells or other applications where the gauge is likely to be splashed or submerged in water. This gauge is used to measure the atmospheric pressure within the wet bell or caisson chamber and can if needed be submerged in water to a depth of 450m.

The gauge, with accuracy 0.25% full scale, is designed to be surface mounted within the chamber and is constructed around the workings of a conventional bourdon tube pressure gauge. This design allows the instrument to be bench calibrated in a similar fashion to other oxygen cleaned bourdon tube pressure gauges.

This design of caisson gauge is supplied with a 1/2" NPT male process connection (alternative connections available) which is left open to the atmosphere within the chamber when chamber pressure is to be measured.

This gauge also features a balance valve to refresh the internal reference chamber if required. Please note that this gauge is calibrated to sea water with a specific gravity of 1.025 unless specified otherwise.