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Model TS420
WARRANTY STATEMENT
General Monitors warrants the Model TS420 to be free from defects in workmanship or material
under normal use and service within two (2) years (sensor cells one (1) year) from the date of
shipment. General Monitors will repair or replace without charge any equipment found to be
defective during the warranty period. Full determination of the nature of, and responsibility for,
defective or damaged equipment will be made by General Monitors’ personnel. Defective or
damaged equipment must be shipped prepaid to General Monitors’ plant or the representative
from which shipment was made. In all cases this warranty is limited to the cost of the
equipment supplied by General Monitors. The customer will assume all liability for the misuse
of this equipment by its employees or other personnel. All warranties are contingent upon
proper use in the application for which the product was intended and do not cover products
which have been modified or repaired without General Monitors’ approval or which have been
subjected to neglect, accident, improper installation or application, or on which the original
identification marks have been removed or altered. Except for the express warranty stated
above, General Monitors disclaims all warranties with regard to the products sold, including all
implied warranties of merchantability and fitness and the express warranties stated herein are
in lieu of all obligations or liabilities on the part of General Monitors for damages including, but
not limited to, consequential damages arising out of/or in connection with the use or
performance of the product.
WARNING - THE TS420 DETECTS OXYGEN DEFICIENT ENVIRONMENTS AND
EXPOSURE TO OXYGEN DEFICIENT ENVIRONMENTS MAY RESULT IN SICKNESS OR
DEATH.
The TS420 Toxic Gas Detector contains components, which can be damaged by static
electricity. Special care must be taken when wiring the system to ensure that only the
connection points are touched.
The TS420 is rated intrinsically safe as denoted by the symbol “Ex ia” on the instrument label.
Substitution of electrical components within the TS420 may impair intrinsic safety.
Damage to the TS420 housing such that any internal components or potting can be or is
exposed compromises the intrinsic safety of the device and as such should not be used in a
hazardous environment. Such damage includes complete fracture of the plastic housing or
cracks that may be opened to expose any internal components or potting. Destruction of the
sensor cap will not affect the intrinsic safety of the TS420; however, calibration accuracy and
the watertight nature of the TS420 will be compromised.
WARNING - DO NOT USE A TS420 WITH A DAMAGED HOUSING IN A HAZARDOUS
ENVIRONMENT.
IMPORTANT - Each oxygen sensor cell is shipped separate from the TS420. This ensures that
a fresh sensor cell will be used during initial start-up. DO NOT install the cell into the TS420
until you are ready to apply power to the system. When installing this unit, an initial field
calibration must be completed, since the TS420 is not factory calibrated to the specific cell.