Warranty Statement

All QEL equipment is warranted against defects in material and workmanship for a period of
two years from date of shipment with the following exceptions:

• Electrochemical Sensors (Toxic) Six Months
• Catalytic Sensors (Combustible) One Year

During the warranty period we will repair or replace, at our discretion, any components or
complete units that prove, in our opinion, to be defective. We are not liable for consequential
or incidental damage on auxiliary interfaced equipment.

A returned goods authorization should be obtained from the factory prior to returning any
goods. All return shipments must be shipped freight prepaid.

Warranty should be considered F.O.B. the factory. Labour and travel time are chargeable for
any field site visits required for warranty work.

LIMITED LIABILITY

QEL systems shall be installed by a qualified technician/electrician and maintained in strict
accordance with data provided for individual systems in the form of installation/maintenance
manuals. QEL assumes no responsibility for improper installation, maintenance, etc., and
stresses the importance of reading all manuals. QEL shall not be responsible for any liability
arising from auxiliary interfaced equipment nor any damage resulting from the
installation/operation of this equipment.

QEL’s total liability is contained as above with no other liability expressed or implied as the
purchaser is entirely responsible for installation and maintenance of systems.

This warranty is in lieu of all other warranties, expressed or implied, and no representative or
person is authorized to represent or assume for QEL any liability in connection with the sales
of our products other than that set forth herein.

NOTE: Due to on going product development QEL reserves the right to change specifications
without notice and will assume no responsibility for any costs as a result of modifications.