FH-Series Probe Style with Humidity
FH-Series Probe Overview
FH-Series probe style air velocity, temperature, and humidity sensors are optimized for demanding applications including laboratory, HVAC, high-performance electronics, and more. The FH-Series probe will sense flow from either direction, and sensors are configured-to-order.
The high-performance FH-Series platform uses discrete sensing elements to measure air velocity, temperature, and humidity simultaneously. Designed with conformal-coated electronics and sealed enclosure, robust FH-Series sensors are configured to order with a variety of mechanical lengths, velocity ranges, and output communication styles. The output may be configured as 0-5V, 0-10V, UART, I2C, or choice of analog output augmented with simultaneous digital communication, either UART or I2C. With gland nut or °C Clamp fitting options, FH-Series sensors are easily installed, outside the duct, without the need for hands inside the duct.
Rugged, versatile FH-Series sensors are well suited for critical product and process control applications in HVAC, laboratories and vivariums, pharmaceutical manufacturing, greenhouses, and more.
Configure to Order
Choice of air velocity range, supply voltage, mechanical length, and output communication style
Analog & Digital Communication
Support for 0-5V, 0-10V, and digital UART or I²C communication outputs
Conformal-Coated Electronics
Robust, UV-tolerant, splash-proof enclosure for use in corrosive or alkaline environments
Simple Installation
Select gland nut or °C Clamp fitting for easy, “outside the duct” installation
Innovative “Outside the Duct” Installation
Single hole for mounting sensor assembly, without the need for screws or hands inside the duct
Specifications & Details
- Velocity Range: 0.15 m/s to 20 m/s (30 fpm to 4,000 fpm)
- Operating Temperature: 0°C to 60°C (32°F to 140°F)
- Supply Power Requirements: 19 – 29 VDC, 15mA nominal
- Velocity & Temperature Output: 0-5 V or 0-10 V output
- Digital Output: UART or I²C available for flow & temperature
- Alarm Output: Open drain, configurable trip point
Response Time
The response time of a sensor is a measure of how quickly it responds to a change in the input parameter, the variable being measured. It is often defined using T63 which indicates how long it takes the sensor to reach 63.2% of the final value when there is an instant change in the variable being measured. T63 is also known as the sensor time constant and is useful in comparing performance for different types of sensors. Because humidity depends on temperature, a sensor’s relative humidity measurement is correct when that sensor’s temperature has stabilized.
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