When you Need Service, Maintenance and Repairs

Alpha Omega Instruments, a Process Insights brand, offers the finest service and technical support in the industry under COSA Xentaur.  COSA Xentaur Field Services and Repair offers customers a wide range of programs and services designed to satisfy the needs of our varied customer base.  We recognize that every customer requires different levels of support to meet and maintain their objectives so we offer a wide range of service designed to satisfy the needs of our varied customer base. We can also provide offer customized service plans.

We are experiencing an unusually high volume of service items at this time, so our standard lead-times are not applicable. The current lead-time is approximately 4-5 weeks. We appreciate your understanding as we work through the backlog as quickly as possible.

Alpha Omega Instruments will evaluate instruments for re-verification of performance using NIST calibrated gas standards; however, in the event that upon evaluation it is determined that the unit is in need of repair before performance verification can be completed, the customer will be notified if the serial number indicates the unit is 10 or more years old. Due to availability of replacement components, repairs are no longer supported by AOI on units that age.

We are ready to assist you with any technical or service related inquiries.

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Checkout and Calibration for Series 1000/Series 1300 – includes the Functional Checkout and Repair and Standard Certification of Performance Verification and Calibration.

Checkout and Calibration for OXY-SEN, Series 2XXX, 3XXX and ZRO – includes the Functional Checkout and Repair and Standard Certification of Performance Verification and Calibration.

Functional Checkout and Repair – Includes an evaluation of the instruments electrical/mechanical performance and an evaluation of sensor performance. Unit output performance is also monitored overnight, checking for any abnormalities.

A cost estimate for any recommended repairs will be sent to the customer before proceeding with any repairs. Also includes engineering upgrade mandates at no additional charge.

Turnaround Time: Estimate time – average 2 weeks FOB, repair time – average 2-3 weeks from customer approval date

Standard Certification of Performance Verification and Calibration: This service is provided in conjunction with our functional checkout for repair service.

Includes a standard 2–4-hour purge on ultra-pure 100% nitrogen and verification on a minimum of two calibration gas mixtures. (Longer purge times would incur an additional fee.) Unit output performance is also monitored overnight, checking for any abnormalities. No electrical/mechanical repairs or evaluations are included with this service. A Certificate of Performance Verification and Calibration is included.

If the unit fails certification or any abnormalities are observed, the customer will be contacted before proceeding with any further service.


Alpha Omega Instruments provides original equipment manufacturer repair and functional calibration services for its instruments. As an OEM, Alpha Omega Instruments is not required to have ISO/IEC 17025 or ANSI / NCSLZ 540-1994 certification. Alpha Omega Instruments will provide a Certificate of Performance Verification, which includes as found/as left data, where applicable. This data is attained using certified, primary, and transfer standard calibration gas mixtures that are produced in an ISO/IEC 17025 accredited facility with stated NIST traceability and, where applicable, adherence to EPA producing and testing protocols.


As part of our Quality Management System to ensure that the manufacturing of our products meets our customer’s expectations, we as a company have implemented a Controlled Documentation System for our product assembly and testing, as well as for any support documents provided for our products to our customers. Any similarities of our Controlled Documentation System to other quality management systems such as ISO 9001 or other quality management systems are coincidental and does not imply nor infer compliance to any such system.

Alpha Omega Instruments does not have or represent itself as having ISO 17025 accreditation. The information contained on our Certificate of Performance Verification is prepared at your request by qualified experts. While we believe that the information is accurate within the limits of the analytical methods employed and is complete to the extent of the specific analyses performed, we make no warranty or representation as to the suitability of the use of the information for any particular purpose. The information is offered with the understanding that any use of the information is at the sole discretion and risk of the user. In no event shall the liability arising out of the use of the information contained herein exceed the fee established for providing such information.

Questions? We’re here to help.

Alpha Omega Instruments
4140 World Houston Pkwy
Suite 180
Houston, TX 77032 USA

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