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Michell's S8000 Integrale gives drift-free dew-point measurements at vacuum pressure
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The S8000 Integrale cooled mirror hygrometer provides highly reliable, drift-free dew-point measurements in vacuums as low as 0.05 mbar, making it unique in its category. It is ideal for applications, such as oil refilling of transformers, which involve vacuum pumping.
Many high voltage transformers, especially those switching many thousands of kVA (such as the types found in power plant sub-stations), are filled completely with a refined mineral oil. This serves several purposes; most importantly the oil must act as a main part of the transformer’s insulation, though it also serves to cool the transformer.
Moisture inside transformers adversely affects the dielectric and insulating properties of the oil. Vacuum pumping the transformer enclosure is a common practice in the industry, with the sole purpose of minimising the total moisture content prior to oil filling.
Optimal dryness is desirable at this critical stage and a reliable, accurate dew point measurement enables users to monitor the process and ensure that moisture is eliminated as much as possible. Together with its low-pressure capability, the S8000 can measure dew-points as low as -60°C with 0.1°C accuracy. Its fundamental chilled-mirror technology is drift-free so measurements are reliable over time. The design of the sensor head allows for excellent sealing both in high-pressure as well as in low pressure and vacuum applications, making it a highly versatile instrument.
If you would like more information please contact:
Denis Lemaire
Global Product Manager
Michell Instruments
48 Lancaster Way Business Park
Ely, Cambridgeshire
CB6 3NW
UK
Tel - +44(0)1353 658 000
Fax - +44(0)1353 658 199
For marketing enquiries, please contact:
Sarah Lawrence
Michell Instruments
48 Lancaster Way Business Park
Ely, Cambridgeshire
CB6 3NW
UK
Tel - +44(0)1353 658 000
Fax - +44(0)1353 658 199
e-mail - sarah.lawrence@michell.com
About Michell Instruments
Established in 1974, the Michell Instruments Group of Companies brings more than 35 years of research, design and technology to the field of instrumentation and control. The current product range includes dew point transmitters, chilled mirror hygrometers, relative humidity (RH) sensors, hydrocarbon dew point analyzers, moisture in liquid analyzers and oxygen analyzers. The company serves industries as diverse as petrochemical and pharmaceutical to power generation and food processing.
Michell Instruments has three manufacturing locations: Made, The Netherlands; Lyon, France and Ely, UK. The company has an extensive network of factory trained application engineers, subsidiaries and distributors stretching across 56 countries.
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