Humidity Indicator CHI


Price is in AUD and Excludes GST.

National Filters Part Number: CHI


  • Desiccant dryers
  • General Compressed Air


CHI consists of an aluminium alloy housing with an adsorbent that alters colour in response to air humidity levels. When compressed air passes through the adsorbent, it shifts color from translucent when moist to orange when dry, signalling the dryness of the compressed air. To allow the compressed air to flow through the adsorbent, the CHI plug must be slightly unscrewed, leading to a minor loss of air. The CHI indicator is versatile and can be applied in various scenarios. 

For more information get in touch with your National Filters Representative.

Call  1300 DRY AIR  (1300 379 247)

Humidity Indicator CHI v1.01


User Manual CHI


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