Helical Bourdon Tube Technology in Pressure/Temperature Gauge

The heart of the NESS gearless pressure gauge is the helically wound Inconel bourdon tube. Inconel was chosen due to its excellent resistance to corrosion and its elasticity. There are two versions of helical bourdon tube: one being designed spefically for high pressures and the other designed for lower pressures. Each pressure range has subtle differences in bourdon tube
design and manufacture. To the user the benefits of this painstaking high technology process are longer field life with inherent accuracy and span. As an assembly in the Test or Process gauge, our coil provides lower cost of ownership and easier field use, simply because our gauges do not fail or require recalibration.

In testing, some NESS  gauges have been cycled over a million times with no appreciable wear or effect on accuracy. Some NESS gauges have been in constant service for more than 15 years, replacing traditional gauges which had failed in the same service within weeks.