none

HYGROMETERS KEEP CHECK ON ULTRA-HIGH-PRESSURE AIR

27-04-2017
by 
in 

Michell hygrometers, available from AMS Instrumentation & Calibration, play a crucial role in the preparation of UHP air for use in underwater applications.

UHP (ultra-high-pressure) air is supplied at up to 450bar(g), rather than the 7bar(g) typical of commercial compressed air. And because of this high pressure, the air used must be free from moisture, which would otherwise condense at such a high pressure.

One of the major applications for UHP air is in submarines, where the additional pressure makes it particularly useful for blowing ballast tanks to enable the boat to rise to the surface. However, the low subsea temperatures place even greater demands on the purity of the air, as any moisture could easily turn to ice and, blocking or damaging equipment and disabling the submarine.

Australian company S.A. Marine specialises in evaluating and testing UHP air systems. The company uses a desiccant dryer to remove any vapour from the air. And an online Michell hygrometer is used to measure the water dew point at delivery. The Michell hygrometer has a ceramic impedance sensor that can measure the dew-point temperature at line pressure, complete confidence in the measurements.

They S.A. Marine also offers an inspection service for breathing air cylinder-filling apparatus for both naval and commercial customers. In this application, excessive moisture can allow bacteria to grow and pose health problems for the users. In this instance, S.A. Marine uses a Michell chilled mirror hygrometer as a high-precision calibration reference on a test rig at its headquarters.

According to Greg Fahill, MD of S.A. Marine: “Michell offers the only hygrometers we have found to be reliable at UHP conditions.”

AMS Instrumentation & Calibration
03 9017 8225
www.ams-ic.com.au

Related news & editorials

  1. Pfannenberg QUADRO multicolour LED light
    15.04.2021
    15.04.2021
    by      In
    Available from Control Logic is the new ‘QUADRO LED-RGB-3G/3D’ light from Pfannenberg. This multicolour light is intended for use in Ex-zones 2 and 22, substituting traditional signal towers. 
    Expanding its product portfolio for Ex-zones, the new range creates an efficient alternative to... Read More
  2. EXAIR 3tlv 800sqnotx pipe
    15.04.2021
    15.04.2021
    by      In
    EXAIR’s new Type 303 Stainless Steel 3” (76mm) NPT Threaded Line Vac Air Operated Conveyors convert ordinary pipe into a powerful conveying system for parts, scrap, trim and other bulk materials.
    Able to operate seamlessly at higher temperatures, this chemical and corrosion resistant Line Vac is  a... Read More
  3. EV115 Epson
    15.04.2021
    15.04.2021
    by      In
    Epson’s new LightScene EV-110 and EV-115 Accent Lighting 3LCD Laser Projectors deliver a unique design integrating lighting and projection with powerful, next-generation features.
    Bluetooth-enabled to enrich sound and visual experience easily, and with built-in GPI capability, the LightScene doesn’... Read More
  4. Valmet ash analyzer
    13.04.2021
    13.04.2021
    by      In
    Valmet has developed an innovative solution to reduce forced boiler shutdowns, caused by superheater corrosion or boiler plugging, and provide guidance for ash treatment and sootblowing needs.
    The new Valmet Recovery Ash Analyser measures the ash composition at the electrostatic precipitator (ESP)... Read More
Products
Suppliers