Product Announcement from Sierra Instruments, Inc.
MONTEREY, CA – March 1, 2005 -- Sierra Instruments, Inc. is pleased to add the Innova-Switch ™ flow and level switch to its existing line of industrial mass flow measurement devices. The Innova-Switch™ represents the State-of-the-art in gaseous and liquid flow switching or liquid level control and continues the Sierra tradition of providing the highest quality mass flow meters and controllers in the industry. Flow and level detection is accomplished by using a high-resolution thermal differential technique. The sensor consists of a pair of matched Resistance Temperature Detectors (RTD's). One RTD is self-heated using a constant DC current. The other RTD is unheated and provides an accurate process temperature reference. The thermal differential created between the reference and the heated RTD pair is a function of the density and/or velocity of the media with which the sensor is in contact.
The sensor and wetted parts are of durable 316L stainless steel, all welded construction with no moving parts. The switch is easy to install and adjust, giving reliable, low maintenance performance in the most demanding applications.
The Innova-Switch ™ features the following:
?Wide operating temperature range of -100F to +850F (-70C to 458C) ? Flow Switch range of 0.01 to 5 fps in liquids and 0.1 to 500 fps gases ? Level Switch switches on level change 0.03 inch ? Fast flow switch response time of 0.5 to 10 seconds (media dependent) ? Level switch response time of 0.1 to 1 second of wetting (media dependent) ? CE, CENELEC and CSA approvals