Go to Autotest Division >Warranty Statement and Terms and Conditions of Sale
Limited Warranty - All Products
Warranty Registration: Required for All Sierra Products
To assure Sierra’s 1-year warranty service, customers must register their products online on Sierra’s website. Online registration of all of your Sierra products is quick and easy and required for our warranty process.
Register warranty here.
Terms and Conditions of Sale
Limited Warranty
Sierra’s products and services are warranted to be free from defects in material and workmanship and conform to Sierra’s specifications 12 months from the date of the original shipment. For more details, view the Limited Warranty section in the Terms and Conditions of Sale.
To assure warranty service, customers must register their products online on Sierra’s website.
Register warranty here.
Download Terms and Conditions of Sale to view the full Warranty Statement.
Lifetime Limited Warranty on Patented DrySenseTM Sensor Technology
In addition to Sierra’s standard one (1) year manufacturing warranty on all instruments produced, Sierra also offers a lifetime warranty on all DrySenseTM sensors standard with Sierra models 640i, 780i, 640S, 780S, and 670S instruments sold after January 1, 2010. This warranty does not extend to the Model 620S, the BoilerTrak TM, the HT (High Temperature) 640S/780S sensor, BioTrak 645S/745S, or the 780S UHP (Ultra High Purity) sensors. To assure warranty service, customers must register their products online on Sierra’s website.
Lifetime No-Drift Sensor Warranty for RedySmart and RedyCompact
In addition to Sierra’s three (3) year manufacturing warranty on all MEMS mass flow instruments produced, Sierra also offers a Lifetime No-Drift Sensor Warranty. Sierra defines no-drift as less than 1% of full scale over the life of the instrument. If a drift of greater than 1% of full scale occurs over the sensor’s lifetime, the sensor and/or entire instrument will be repaired or replaced and recalibrated free of charge.
This warranty applies to all MEMS/CMOS thermal mass flow sensors standard on every Sierra RedySmartTM and RedyCompactTM model sold after January 15, 2020.