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Chapter 10: Annual Maintenance and Calibration
Your CalTrak SL 800 is engineered to provide years of reliable service, with appropriate care and maintenance. Sierra
recommends an annual calibration, to help ensure the best possible flow measurements and to provide an audit trail for
those applications subject to regulatory requirements. If you should encounter any problems with your CalTrak SL 800,
immediately contact Customer Service and provide a detailed description of your situation, including CalTrak SL 800
model and serial number, information about the flow source and the current calibration setup, environmental conditions
during the test, the flow point or points that you’re checking and an explanation of the issue you’re experiencing.
Recertification
Your CalTrak SL 800 primary piston prover is a precision measuring standard comprised of moving parts that are ma-
chined to extremely close tolerances. Additionally, various environmental factors, product wear, drift of the temperature
sensors and pressure transducers, or inadvertent damage may adversely affect your measurement accuracy or general
performance.
For these reasons, Sierra highly recommends having your CalTrak SL 800 annually verified in order to ensure its
measurement integrity. For those applications subject to regulatory or ISO requirements, verification by oan accredited
laboratory provides you with a defensible audit trail of the highest quality.
Returning Equipment to Factory
Please contact Sierra for a service quote before sending your CalTrak SL 800 to our factory.
If you are sending in your CalTrak for repair or evaluation (rather than elective re-certification), contact Sierra for technical
support or troubleshooting assistance prior to shipping the unit. Provide us a detailed description of your issues. If we are
unable to resolve the situation by phone or email, we will issue you an RMA (return merchandise authorization) number.
Follow the instructions for returning your instrument for service as noted below.
Shipping
When shipping your CalTrak, be sure to follow some simple guidelines to avoid costly damage to your property.
Pack your instrument carefully. Use adequate packing material. Whenever possible, use the original
packing and foam or bubble wrap that came with your CalTrak (packing peanuts NOT recommended).
Or use a Sierra CalTrak Pelican carrying case, which provides a hard case shell for protection of your
valuable equipment. If you do not already have a Pelican case, visit us at www.sierrainstruments.com
for more information on obtaining one.
Include a copy of the RMA form (complete with Sierra supplied RMA number) with the unit(s).
Use a major freight carrier (e.g., FedEx, UPS) that supplies tracking numbers.
Insure your CalTrak. Sierra is not responsible for damage occurred during transit.
Understand our mutual shipping obligations. Sierra is responsible for shipping cost only if the issue is
product related and the CalTrak is still under warranty.
RMA Note – Returning Unit for Service
Sierra will not evaluate or service your instrument without an RMA number. Go to
http://www.sierrainstruments.com/rma