Typical Test Results
Actual test results vary depending on the equipment under
test. TPI recommends you check with the manufacturer of the
equipment being tested to determine specific acceptable
results.
Power Burners (Gas Fired)
Power Burners (Oil Fired)
Gas Fired Burners (Atmospheric / Fan Assist)
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5. Allow the readings to stabilize. The CO concentration in ppm can be seen.
NOTE: Your 707 carbon monoxide analyzer is equipped with a high
quality sensor that incorporates an on-board NO/NOx filter. This fil-
ter prevents higher than normal CO readings caused by sensor
cross sensitivity to NO/NOx, which is a byproduct of combustion.
When a gas appliance or hot water heater is operating properly, lit-
tle or no CO will be produced. Older CO analyzers, and those
equipped with sensors that do not have an on-board filter, will
incorrectly read higher levels of CO because of the “NOx bump” or
cross sensitivity to the NO/NOx present in the sample.
The NO/NOx cross sensitivity can increase the displayed reading
by as much as 30ppm or more on analyzers with sensors that do
not have the NO/NOx filter.
6. The Scroll/Enter key can be pressed to display the peak CO reading.
Pressing and holding down the Down Arrow key will zero the peak reading.
Pressing the Scroll/Enter key will return the 707 to normal operation.
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Less than 100ppm Carbon Monoxide in the flue
Hot Water Heater
Less than 50ppm Carbon Monoxide in the fire tube
Less than 100ppm Carbon Monoxide in the flue
Less than 100ppm Carbon Monoxide in the flue
Levels Near Properly Adjusted Gas Stoves
Less than 15ppm Carbon Monoxide
Default display
shows Carbon
Monoxide (CO) in
parts per million
(ppm)
Peak display shows
the highest amount
of Carbon Monoxide
(CO) measured in
parts per million
(ppm) since start up.
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