Includes 1 replacement blue moisture ring (single phase humidity disk) and one yellow carbon monoxide disk for use in the #44070 Colorimetric Air Quality Monitor.

Includes one Carbon Monoxide Disk for use in the #44070.

Similar to #44070, this unit utilizes a 3-phase sensor disk which progressively changes shades of blue as the humidity increases. Humidity levels of 20%, 40% and 60% are detected; desiccants should be renewed as the 40% segment begins to fade. Since this model does not sense carbon monoxide, use this device where the chance of carbon monoxide in the intake air is low; also use it to maintain very low dew points in air used for cold water diving or deep TEK diving. Replacement sensor disk:...

This simple device fits into the air train immediately after the desiccant filter where it monitors air quality by means of obvious color changes in parchment sensor disks which can be seen through a plastic viewport. It can also determine the longevity of the filter media. When a color change indicates that the moisture level in the processed air is too high, the desiccant needs changing. If compressor running time to that point has been tracked (manually or by hour meter), then the normal...

1 replacement blue moisture ring (single phase humidity disk) for use in the #44070 Colorimetric Air Quality Monitor.

Includes a single Three Phase Humidity Disks for use in the #44071.