• CO
2
sensor
The CO
2
sensor is connected to the purifier’s controller and will trigger an alarm when the CO
2
level exceeds 500 ppm.
• QDT oil indicator
An oil indicator is available as an option to control the purity of the air. The oil indicator is a
calibrated measuring instrument, used to detect aerosol-mist levels of oil entrainment that may
be present in compressed air systems. Sensitivity of the indicator is limited only by the total
number of hours it is allowed to remain on the air supply system. The indicator is sensitive
enough to measure a concentration of oil entrainment as low as 0.01 ppm. This sensor will
indicate when the activated carbon is saturated and needs to be replaced. The oil indicator has
a maximum pressure of 8.75 bar (127 psi).
• QDT+ filter with CO catalyst
A catalyst that converts CO into CO
2
is available as option (QDT+ filter). This option is strongly
recommended in polluted areas and makes sure that the air quality will always comply with the
Pharmacopoeia.
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