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Sierra Extends Flow Switch Warranty

Sierra Offers 2-Year Standard Warranty on Flow Swtiches

MONTEREY, CA — July 30, 2010 — Sierra Instruments announces it will offer a 2-year warranty for its entire line of Innova-Switch™ Flow Level Switches beginning July 1, 2010. 

“We’re committed to the highest quality in all our products, and I think this action proves that we’re thinking ahead for our customers’ long-term benefit,” says Scott Rouse, Sierra Product Manager. “

Sierra’s Innova-Switch™ has been a solid performer in the market for decades. Designed to meet a broad range of performance and environmental application requirements, the sensor and other wetted materials are 316L stainless steel and feature all welded construction with no moving parts. The Innova-Switch is also easy to install and adjust, giving reliable, low maintenance performance in the most demanding applications.

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 gas/fluid in contact with the sensor. 

The Innova-Switch  features a wide operating temperature range of -100°F to +850°F (-70°C to 458°C) and a range of 0.01 to 5 feet per second (fps) in liquids and 0.1 to 500 fps gases.  The level sensitivity is 0.03 inch.  The meter features an adjustable response time of 0.5 to 10 seconds (media dependent).  Innova-Switch is also CE and CSA approved.

If you would like more information about the Innova-Switch, visit the InnovaSwitch prouct web page or contact Sierra Instruments at 800-866-0200.


Sierra is the leading manufacturer of Thermal Mass Flow Meters in North America (Flow Research, 2009). A global leader in flow measurement and control for over 35 years, Sierra instruments designs and manufactures high performance flow instrumentation for gas, liquid and steam applications commonly found in the semiconductor, environmental, scientific research, petrochemical, energy, aerospace, and general manufacturing industries. With over 150 offices in 50 countries, Sierra is uniquely positioned to provide their innovative products and lifetime support for the leading companies of today and the growth enterprises of tomorrow.

Press Contact:
Maryadine Washington, Marketing Manager
831-373-4402 (fax)