Corrosive and Dangerous Gas Policy
Updated: July 26, 2023
This Corrosive and Dangerous Gas Policy is applicable for models: SmartTrak 50, SmartTrak 100 Series, and TopTrak 820 Series capillary products.
Return Policy Concerning Scientific Units Exposed to Corrosive and/or Dangerous Gases
Sierra’s 50, 100 and 800 Series capillary products are compatible with most gases due to their 316 stainless steel flow bodies and sensors, provided they are used with the recommended elastomeric seal material. However, these gases can often mix with other gases or liquids during use which can alter their chemical properties and create a corrosive or dangerous condition as noted above.Because of safety concerns, Sierra has adopted a “Do Not Return” policy for meters and controllers subjected to the following gases:
Gas Name | Gas Symbol |
Boron Trichloride
|
BCl3
|
Chlorine
|
CL2
|
Ethylene Oxide | C2H4O |
Fluorine
|
F2
|
Hydrogen Chloride
|
HCl
|
Hydrogen Fluoride
|
HF
|
Hydrogen Sulfide
|
H2S
|
Nitrogen Dioxide
|
NO2
|
Tetraethyl Orthosilicate | Teos |
Tungsten Hexafluoride
|
WF6
|
Sulfur Dioxide
|
SO2
|
Uranium Hexafluoride
|
UF6
|
Sierra Policy Summary
- Other gases that are not listed might also be considered corrosive or dangerous. Before attempting to return a device to the Sierra factory for service, please provide Technical Support with a Material Safety Data Sheet (MSDS) for approval before attempting to ship.
- Devices subjected to listed or non?approved gases are NOT to be returned to the Sierra factory for service or calibration, regardless of purging or cleaning.
- The normal 1-year warranty is void once the device is exposed to one of these gases.
- If a problem arises, contact Sierra Technical Support for a possible solution, or to order a replacement at a discount. Standard lead times apply.
- If a device has been calibrated for one of the above gases but has not yet been exposed to it, it may be returned for service. A signed Non?Exposure Statement must accompany the shipment. This document is provided on the Sierra Instruments website during the RMA process. If there is any question, please contact Sierra Technical Support during Pacific Time business hours.
- An Ammonia device may be returned for service through the RMA process, provided a "Declaration of Decontamination" is included.
Sierra Industrial Device Policy Summary
Industrial products such as 620, 640, 780, 240 and 241, if exposed to any of these gases, must be properly cleaned and purged in order to return for service. During the RMA process, a “Declaration of Decontamination” must be completed and signed, and an MSDS document supplied with the shipment.Download PDF of Dangerous and Corrosive Gas Policy.