Airflow Measurement Products

One of the many advantages of vortex shedding is that the sensing is not amplitude-based and cannot drift over time. Therefore, no recalibration is required – ever. Other airflow sensors rely on an amplitude measurement device, which is susceptible to inaccuracies and drift. Pitot and orifice sensors rely on differential pressure transmitters, which require periodic calibration. Thermal airflow sensors use thermistors, which will drift over time and must be matched to the electronics.

The VorTek is the only airflow measurement technology that is linear. The inherent physics of vortex shedding is a linear relationship between frequency and air velocity. That means that as air velocity changes, the frequency of the pulses changes in a linear manner. This eliminates the need for complicated curve matching associated with thermal devices.

The VorTek incorporates a unique, modular design concept. This enables you to order only the functions that are required for a specific application, eliminating the need to pay for features that are not required. Instead of multiple electronics platforms for different applications or “series” of models, the VorTek simplifies user selection by utilizing a single electronics platform that can be used from a base of one sensing point up to sixteen sensing points. Any unit can be easily changed in the field to add sensors or reconfigure the range using the free Accutrol Insight graphical software.

Yes. Vortex sensors are contamination resistant since the sensing ports are on the downstream side of the sensor. This puts them out of the path of contaminants, so the “sensing side” of the device remains clean. Other airflow measurement technologies, such as thermal dispersion, are severely affected by contaminants in the air stream. As a thermistor gets coated with dust or dirt, the thermal transfer is impacted, seriously affecting the accuracy of the device.

Yes. BACnet MS/TP can be ordered as an option. This option can be provided at time of order or added in the field at a later date.

Yes. The innovative design of the VorTek incorporates the use of the free Accutrol Insight graphical user software. Gone is the frustration of older-style alphanumeric displays and pushbuttons with a large decision tree user manual. The Insight software provides simple intuitive access to the configuration of the transmitter for different applications. The software connects to the VorTek through a standard USB connection providing quick and easy access for the following:

BAS – Allows simple field changes to the transmitter range, duct area.

Commissioning – Allows simple adjustment for unusual airflow profiles due to duct conditions.

Owner – Can make changes to ranges, number of sensors, etc. as the system requirements change.

Yes.