Vibrating-fork sensors survive chemical attacks
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Mobrey Measurement product story
Edited by the Engineeringtalk editorial team
Oct 17, 2005
Emerson Process Management has released a stainless steel housing option and Hastelloy C wetside sensor option for its Mobrey Squing 2 vibrating short-fork level sensor.
Emerson Process Management has released a stainless steel housing option and Hastelloy C wetside sensor option for its Mobrey Squing 2 vibrating short-fork level sensor.
Both options provide a significant increase in resistance to corrosion and chemical attack for consistent reliable level measurement in aggressive offshore, chemical and petrochemical environments.
The stainless steel housing is ATEX flameproof, FM explosion-proof and safe area approved, and the Hastelloy sensor is ideal for detection of hostile liquids such as bleaches, chlorines, acids, fluorides and fuel oils.
The new versions of Squing 2 are available with a choice of threads and flanges, and feature a visible heartbeat LED that flashes continuously to give perpetual indication of state, and constant confirmation that the sensor is operational.
"Warnings of a fault within the sensor or its circuitry are indicated by a change in flash rate", explains John Stewart, Product Manager, Mobrey Measurement Division of Emerson.
"An LED off state indicates a power supply or similar fault".
"Also incorporated into the design is a magnetic test point to allow quick checking of the switch and associated system".
Suitable for any liquid with a specific gravity less than 2.0 (approximately 2000 kg/m3) and a viscosity up to 10,000cP, the Mobrey sensor can operate in temperatures up to 150C, and in pressures between vacuum and 100bar.
The forks themselves extend only 50mm to allow easy installation into a tank or a pipe.
Squing 2 is available as an intrinsically safe option, has no moving parts, and requires no maintenance.
Emerson's range of Squing level sensors include a robust plastic housing sealed to IP66/IP67; an explosion-proof/flameproof approved aluminium housing; the compact Mini Squing which features all of the benefits of Squing 2 in a compact low cost package; and the Squing TD series water ingress level detector which meets the International Maritime Organisation Solas Regulation XII/12 for bulk cargo carriers.
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