Welcome to TSI Instruments’ After Sales Support Group. We are committed to providing you with the highest quality service available, and employ a dedicated service team in the UK, headed by our Service Manager.

• For information on which instruments we service on-site please see below.
• Turn around time for servicing can be provided on request.
• The TSI PortaCount Calibration rig based at High Wycombe allows fast turnaround for service and calibration, meaning that users have their instruments in operation for the maximum time.

In order to meet your requirements, we would like to offer you several avenues to contact TSI in order to return your product for service.

• Online Return Material Authorization (RMA) Form
  We have an on-line automatic Return Material Authorization process. Simply follow the instructions on the website and you will be provided an RMA number immediately after filling out the appropriate online forms.

• Download a PDF Return Material Authorization (RMA) Form (PDF file - 100K)
  Download the RMA form, print it, and fill it out. Then fax the form to us at +1 651-490-2874 and we will provide you an RMA number.
  Instructions on filling out TSI RMA Form (PDF file - 280K)

For PortaCount, and Particle and Fluid Mechanics Research instruments, contact:

TSI Instruments Ltd.
Lancaster Road
Cressex Business Park
High Wycombe, Buckinghamshire
HP12 3QP
United Kingdom
Telephone: +44 (0) 149 4 459200
Fax: +44 (0) 149 4 459700
Email: tsiuk@tsi.com
Web: www.tsiinc.co.uk

For IAQ and Velocity Test instruments, contact:

TSI AB
Lindberghs Gata 9
Arlanda Stad
195 61
Sweden
Telephone: +46 8-595 132 30
Fax: +46 8-595 132 39
Email: tsiab@tsi.com
Web: www.tsi.se