B-Series Probe Style and Bi-Directional

b-series probe head

B-Series Probe Overview

B-Series probe bi-directional, air velocity and temperature sensors are ideal for combustion, curing, and process control applications where the direction of airflow or detection of flow reversal is important to safety, containment, cleanliness, or process quality. B-Series sensors are configured-to-order.

The B-Series platform measures and outputs airflow direction, as well as air velocity and air temperature, in real-time. With the bi-directional air velocity sensing capability of B-Series sensors, flow direction is determined, and flow reversals are detected.

Rugged B-Series sensors combine sensing, computing, and communication in a sealed enclosure with conformal coated sensor electronics. B-Series sensors are configured to order with a variety of choices for mechanical lengths, velocity ranges, output communication styles, and installation fittings. B-Series sensor output may be configured as 0-5V, 0-10V, 0-20mA, 4-20mA, UART, I2C, or with simultaneous analog and digital communications.

The low voltage B300 model has a nominal supply input of 12VDC, while the universal voltage B500 accepts 24VAC/VDC, making it ideal for applications where AC or DC supply voltages are encountered.  The B500 has a wider operating temperature range than that of the B300, and is capable of handling low temperature environments down to -10°C (14°F).

Robust, versatile, embedded B-Series sensors are well suited for combustion, curing, HVAC, laboratory, process control, and other demanding applications where flow direction, air velocity, and air temperature are needed.

Innovative “Outside the Duct” Installation

Single hole for mounting sensor assembly, without the need for screws or hands inside the duct

FH400 probe installation steps

Specifications & Details

  • Velocity Range: 15 m/s to 20 m/s (30 fpm to 4,000 fpm)
  • Operating Temperature:
    • B300:  0°C to 60°C (32°F to 140°F)
    • B500: -10°C to 60°C (14°F to 140°F)
  • Supply Power Requirements:
    • B300:  4.5 – 15 VDC, <100mA nominal @12V
    • B500:  24VAC/DC ±10%, <65mA nominal @24V
  • Velocity & Temperature Output: 0-5V, 0-10V, 0-20mA or 4-20mA output
  • Digital Output: UART or I²C available for flow & temperature
  • Alarm Output:  Open drain, configurable trip point

Downloads & Media


Questions about the B-Series Probes?

The B-Series sensor is more than an air velocity sensor. It’s a 3-in-1 air velocity sensor, measuring air velocity, air temperature, and airflow direction at once. The output of the B300 and B500 air velocity sensors may be configured as analog, digital, or analog with simultaneous digital communication. Choose from either UART or I2C communication protocols for the digital output. For applications where relative humidity is needed, our 3-in-1 FH-Series air velocity sensors measure air velocity, air temperature, and relative humidity in real time. Our friendly and knowledgeable sales team is standing by to answer your questions.
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