Knowledge Base  /  Frequently Asked Questions  /  Room Alert

The Difference Between The Previous And Current Temperature & Humidity Sensor Cap


Original single-hole sensor cap

The original cap on AVTECH’s Digital Temperature & Humidity Sensor has 1 hole on the tip of the probe; this approximately 0.1″ diameter hole allows some air circulation around the humidity and temperature sensing components inside.


New honeycomb sensor cap (available Dec. 7, 2018)

The new honeycomb-style cap features 4 columns with 6 air holes each around the body. These 0.1″ diameter holes promote much greater air circulation around the humidity and temperature  sensing components inside.

Only the cap on the sensor has changed; the internal components remain the same.

Effect of greater air flow on humidity readingsEffect of greater air flow on temperature readings

The report created in RoomAlert.com shown below compares the readings generated by the original and new cap when the Digital Temperature & Humidity Sensor probe is exposed to rapidly rising and falling humidity over the course of approximately 2 hours.

This report shows that greater air flow around the humidity sensing component means a faster response to changes, greater accuracy in readings and wider range of perception. For more details, select any of the features below.

Faster response

Using the horizontal and vertical zoom feature in RoomAlert.com, we can see a close-up of the humidity rising at the beginning of the curve.

The red dots inserted on the 40% to 70% RH grid lines show the new honeycomb cap reaching the same reading faster than the original; the higher the humidity soars, the further the honeycomb cap outpaces the original.

Greater accuracy

Again using the horizontal and vertical zoom feature in RoomAlert.com, we get a close-up of the humidity as it begins to plummet at the other end of the curve.

You can see in the red triangle that the original cap’s initial response to the humidity plummeting is much flatter than that of the honeycomb; because the honeycomb-capped sensor can respond faster, it’s readings are more accurate in changing conditions.

Wider range

Because the sensor responds faster, it sees a greater range of humidity in less time. Again using the horizontal and vertical zoom feature in RoomAlert.com, we get a close-up of the plateau of the curve:

The readings from the honeycomb cap reach into the 90s, plateauing at about 93.5% RH, while the original reaches up only into the mid-80s, starting to plateau at about 85.5%.

The report created in RoomAlert.com shown below compares the readings generated by the original and new cap when the Digital Temperature & Humidity Sensor probe is exposed to rapidly rising and falling temperature over the course of approximately 3 hours.

This report shows that greater air flow around the temperature sensing component means a faster response to changes, greater accuracy in readings and wider range of perception. For more details, select any of the features below.

Faster response

Using the horizontal and vertical zoom feature in RoomAlert.com, we can see a close-up of the temperature rising at the beginning of the curve.

The red dots inserted on the 60 to 90° F grid lines show the new honeycomb cap reaching the same reading faster than the original; the higher the temperature goes, the further the honeycomb cap outpaces the original.

Greater accuracy

Again using the horizontal and vertical zoom feature in RoomAlert.com, we get a close-up of the temperature as it begins to drop at the other end of the curve.

You can see in the red triangle that the original cap’s response to the temperature dropping is flatter than that of the honeycomb; because the honeycomb-capped sensor can respond faster, it’s readings are more accurate in changing conditions.

Wider range

Because the sensor responds faster, it sees a greater range of temperature in less time. Again using the horizontal and vertical zoom feature in RoomAlert.com, we get a close-up of the plateau of the curve:

The readings from the honeycomb cap reach up to and plateau at about 119° F, while the original only reaches up to and plateaus at about 115° F.

AVTECH continues to evaluate opportunities to improve our products, and this is one example of that focus. Using RoomAlert.com made it easy to compare results across different variations of sensors with changing conditions over varying time periods. We hope this illustrates both our commitment to overall product quality, as well as how you may use tools like RoomAlert.com to evaluate and report on conditions in your own environment.

If you would like to upgrade your existing Digital Temperature & Humidity Sensor to the new honeycomb-style cap (available Dec. 7, 2018), please contact your Product Specialist at Sales@AVTECH.com.

Facebooktwittergoogle_plusredditpinterestlinkedinmail