The General Flow Sensor with Venturi Tube determines fluid velocity by measuring the pressure difference between the two input tubes within a pipe network.
See the Buying Guide for this item's required, recommended, and additional accessories.
In this apparatus, the Venturi Tube has pressure taps at the narrow diameter and the larger diameter. The General Flow Sensor connects to the Venturi Tube to measure the different pressures due to different fluid velocities. You supply the ¾ inch PVC pipe and the water. It is suggested that you connect the pipe to a faucet with flexible tubing and, at the other end, let the water flow into a bucket resting on a Force Platform (PS-2141). As the water flows, the velocity can be determined by the changing weight of the bucket as measured by the Force Platform.
The recommended interface is the SPARKlink Air because two ports are required and it is convenient to have a wireless interface so your laptop can be away from the water. However, two AirLinks (PS-3200) or a 550 or 850 Universal Interface will do as well.
- The Venturi Tube is used in a pipe network that carries water or air. The Pitot Tube is used in an open water channel or in air.
|Pressure Range||0 to 50 kPa|
|Pressure Accuracy||±2.5% of Full Scale (0 to 85ºC)|
|Resolution||0.2% of Full Scale|
|Venturi Range||0 to 84 gpm (water); 0 to 773 gpm (air)|
|Venturi Accuracy||±2 gpm (water); ±2.5 cf/min (air)|
|Pitot Range||0 to 9.98 m/s (water); 0 to 92.1 m/s (air)|
This product requires PASCO software for data collection and analysis. We recommend the following option(s). For more information on which is right for your classroom, see our Software Comparison: SPARKvue vs. Capstone »
This product requires a PASCO Interface to connect to your computer or device. We recommend the following option(s). For a breakdown of features, capabilities, and additional options, see our Interface Comparison Guide »
Dedicated Datalogging with SPARK LXi
Consider an all-in-one, touchscreen data collection, graphing, and analysis tool for students. Designed for use with wired and wireless sensors, the SPARK LXi Datalogger simultaneously accommodates up to five wireless sensors and includes two ports for blue PASPORT sensors. It features an interactive, icon-based user interface within a shock-absorbing case and arrives packaged with SPARKvue, MatchGraph!, and Spectrometry software for interactive data collection and analysis. It can additionally connect via Bluetooth to the following interfaces: AirLink, SPARKlink Air, and 550 Universal Interface.
|1x PASPORT Interface||--||--|
|For velocity verification Pitot Tube||ME-2221||$60|
|General Flow Sensor||PS-2222||$165|