How many probes do I use?

In accordance with ASTM F2170-11, you should use:

  • 3 Smart Sensors (aka probes, sensor barrels) must be used for first 1,000 square feet.
  • 1 Smart Sensor for every additional 1,000 square feet.
  • If your slab is 1,200 square feet then you would need 4 probes.

 Square Feet

Number of
Smart Sensors

0 – 1,000   3
1,001 – 2,000   4
2,001 – 3,000   5
3,001 – 4,000   6
4,001 – 5,000   7
5,001 – 6,000   8
6,001 – 7,000   9
7,001 – 8,000   10
8,001 – 9,000   11
9,001 – 10,000   12

Please visit 10 GUIDELINES FOR ASTM F2170 COMPLIANCE and VIDEO 16 – BEST LOCATIONS TO PLACE RELATIVE HUMIDITY PROBES for more information.

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