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8.
Detailed Warranty Statement for RedySmart &
RedyCompact Brands
In addition to Sierra’s standard 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. Therefore, if 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 RedySmart™
and RedyCompact™ models sold after January 15, 2020. This warranty is only valid if the unit is exclusively
used with the gas or gases specified during the initial calibration or recalibration, without any additives in any
form and under the operating conditions (temperature, inlet and outlet pressure, full scale flow rate) the unit
was originally specified for.
Sierra’s Lifetime No-Drift Sensor Warranty is made possible due to high-precision MEMS (Micro-Electro
Mechanical Systems) technology utilizing an advanced ultra-stable CMOS (Complementary Metal Oxide
Semiconductor) sensor. The use of MEMS techniques allows both electronic circuits and mechanical devices
to be manufactured on a silicon chip, similar to the process used for integrated circuits.
To assure warranty service, customers must register their products online on Sierra’s website. Online
registration of all of your Sierra products is required for our warranty process.
Warranty Limitations:
Warranty does not cover any damage or discoloration caused by particulates deposited by dirty gases, liquids,
residue or any other source. Warranty does not cover usage of any corrosive gas not compatible with the
wetted materials listed:
Wetted Material
Sensor Compartment
•
Aluminum
•
Stainless Steel
Sensor Element CMOS
•
Silicon (Si)
•
Silicon oxide (SiOx)
•
Silicon nitride (Si3N4)
•
Stainless steel
•
Hysol FP4450/4451TD
•
Gold connectors
Sensor Compartment O-ring Sealing
•
FKM
•
EPDM / FFKM on request
Warranty does not cover electronics drift or recalibration expenses for any reason other than the failure
described above. Such returns are contingent on Sierra's examination and reasonable satisfaction that any
defects are covered by this warranty and that the customer has not returned the equipment in a damaged
condition, due to any negligence, tampering, misapplication or product modification on the part of the customer
or customer agents. Third party reports will not be accepted for warranty claims.