YZ Systems DTEX DX1000G/L Instructions & Operating Manual page 20

Section 4: Preparing Your DTEX For A Test
Things to Remember
WARNING
The DTEX system is designed to evaluate odor
intensity in gas streams. Because of the potential-
ly hazardous nature of conditions and elements
involved in conducting tests, users are reminded
to use extreme caution while operating the DTEX
system. The system operated improperly or past
due calibration could create a dangerous situation to
both persons or property as well as produce inaccu-
rate test results. Refer to D6273-98 ASTM standard
test methods for gas odor intensity for guidance
regarding precautions, hazards and procedures.
Before conducting tests at a site, investigate and
eliminate any possible ignition source in the immedi-
ate area.
Should the user detect or suspect a leak prior to or
during a test, immediately shut off the source isola-
tion valve and seek the cause.
Avoid conducting tests in closed or confined spaces.
Avoid conducting tests in windy conditions.
Operators of the DTEX system should possess an
"average" sense of smell. This will provide more con-
sistent results from test to test. Consideration should
be given to circumstances which could affect sense
of smell such as colds, medication, smoking, etc.
Be aware that user sense of smell can be dimin-
ished due to prolonged exposure to odors. Odor
intensity readings should be based on the first few
sniffs. Occasionally, the user should pause between
sniffs and breath fresh air to rejuvenate sense of
smell, then resume the test.
Maximum inlet pressure to the DTEX system is 5
psi. If test source pressure exceeds 5 psi, install a
pressure reduction regulator prior to the gas inlet.
Do not overtighten the flow valve
--- DAMAGE WILL RESULT! Lightly
bottom the valve knob after use.
Y Z S y s t e m s • 8 8 2 5 N . S a m H o u s t o n P k w y W e s t • H o u s t o n , Te x a s • U S A • 7 7 0 6 4 • P : 2 8 1 . 3 6 2 . 6 5 0 0 • F : 2 8 1 . 3 6 2 . 6 5 1 3
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