Sulfur Dioxide Filter Breakthrough Indicator
Sulfur Dioxide Filter Change Indicator
Item No. 179
Minimum detectable limit: 0.5ppm•hr
Color Change: Orange to red
Inlet dimensions: ¾” Male NPT
Service life: 14 months
Sulfur Dioxide filter change indicator. It is a colorimetric indicator that indicates the exhaustion of filters. The indicator is reliable and cost effect means for protection from exposure to toxic sulfur dioxide. It changes color from orange to red when filter is saturated with sulfur dioxide. Hence alerting the user to replace the exhausted filter.
Connects easily to the ¾ inch female NPT outlet of the filter using the ¾ inch male NPT threading at the bottom of the indicator. Bright vibrant color change from all directions. Unique design prevents any color change due to exposure to contaminates in the surrounding environment. It changes color only when filter is saturated.
|89.9mm (3.5in), diameter 24.5mm (1.0in)|
|Inlet dimensions:||¾” MNPT|
|Operating temperature:||-20oC to 55oC (-4oF to 131oF)|
|Operating humidity:||5% RH to 85%RH|
|Minimum detectable limit:||0.5ppm•hr at 30 cm/sec face velocity|
|Color change:||Orange to red|
|Storage temperature:||4oC to 25oC, (39oF to 77oF)|
|Shelf life:||14 months at 4oC to 25oC, (39oF to 77oF)|
|Service life:||14 months|
Sulfur Dioxide filter change indicator.
Sulfur dioxide odor threshold of 0.67-4.75 ppm.