Baord mount airflow sensor with reference design circuit.

RFS300

Board-Mount Digital Airflow Sensor (Reference Design)

The RFS300 is a board-mount air velocity and temperature sensor that uses a reference design circuit for maximum positioning flexibility, thereby creating the smallest possible sensor footprint (6mm x 6mm). The RFS300 is designed to be soldered directly to a printed circuit board or mounted to a surface mount socket for easy removal or maintenance.

Sensor element with pre-programmed IC

Drive circuit schematic and placement files supplied by Degree Controls, Inc.

Airflow sensor with dual elements to measure air velocity and temperature.

Dual sensing element with protective shroud

Provides fully linearized air velocity and air temperature with wide operating range.

Small airflow sensor with low power consumption.

Smallest footprint sensor on the market

Less than 20mA power consumption.

Digital UART or I²C Communication

Alarm output option available for switch style operation

5% Accuracy & Repeatability Rating

Available flow learning command for product
optimization, post-soldering

Specs & Details

Specifications

Velocity Range: 0.15m/s – 20.0m/s (30fpm – 4000fpm)
Response Time: 400 ms
Relative Humidity: (non-condensing) 5-95%
Supply Power Requirements:
+12-24 VDC, 10mA nominal

(At <18VDC, some low temperature/high flow limitations apply, see Board Mount Sensor manual)
Digital Output: 3.3 VDC UART or I²C
Optional Alarm Output: Configurable trip point
Housing Material: UL94-V0