Features and Benefits:
- No Air Straighteners Required. The VOLU-probe/SS unique dual offset static pressure sensor and patented chamfered total pressure sensor design permit the accurate measurement of the airflow rate in highly turbulent flow locations (with directional yaw and pitch varying up to 30º from the duct’s longitudinal axis) without the need for upstream air straightening means when installed within required minimum upstream/downstream duct requirements.
- Offered in Two Models. The VOLU-probe/SS is offered in two basic configurations to facilitate installation in new or existing ducts or stacks; the Model 1SS for external mounting, and the Model 2SS for internal mounting for rectangular ducts only.
- Negligible Resistance to Airflow. The VOLU-probe/SS cylindrical configuration and smooth surface free of external sensor protrusions permit the airstream to flow unrestricted around and between the installed traverse probes, creating a very minimal, if not negligible resistance to airflow (Ex: 0.046 IN w.c. at 2000 fpm air velocity). The negligible resistance to airflow is of importance because it will not consume fan capacity or waste energy, compared to traditional devices like venturis, airfoils and orifices.
- Performs Equal-Weighted Averaging of Flow Signals. Through the use of separate averaging manifolds, the VOLU-probe/SS instantaneously averages, on an equal-weighted basis, the multiple pressures sensed along the length of the probe, producing separate “averaged” total pressure and static pressures at the probe’s external signal connections.
- Provides for Equal Area Traverse. Each VOLU-probe/SS contains multiple total and static pressure sensors specifically and precisely located along the length of the probe to provide an equal area traverse of ducted airflow. For rectangular duct configurations, the sensors are spaced at equal distances along the probe. For circular duct configurations, the sensors are located at the centers of the equivalent concentric area along the probe.
- True Velocity Pressure Measurement. The total and static pressure components of airflow measured by the VOLU-probe/SS represent true average velocity pressure and can be directly converted to velocity without the use of correction factors.
- Purgeable Design. Unique design permits high pressure, full volume purge for an effective cleaning to ensure accurate long-term measurement in dirty air applications.
- Rugged Construction Assures Long Service Life. The standard VOLU-probe/SS is fabricated from Type 316 stainless steel using all welded construction. Contact Factory for alternate materials of construction such as Hastelloy, Inconel, Kynar, PVC, etc, and for special coatings such as Teflon and erosion resistant tungsten carbide.