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Weir Thin Plates Thin plate weirs are used for liquid flow measurement where high accuracy is required and are widely used for industrial discharge and final effluent outfall applications. The triangular or V-notch thin-plate weir is an accurate flow measuring device particularly suited for small flows.
They are commonly used to assess the water on the farm.
What is a weir plate. When used for flow measurement a weir plate is a barrier across a body of water over which water flows. Spanning the full width of the channel or body of water the shape of a weir plate generates a known level-to-flow relationship. For a weir to be accurate the approaching flow must be both subcritical and under open channel flowing with a free surface.
Over this notch a stainless steel weir plate is attached for the water to actually flow over. In portable applications both the weir plate and the weir carrier are fabricated in stainless steel to provide toughness and high strength. Here the weir plates may actually come in a set to allow for the selection of an appropriate weir plate to fit a site unique anticipated flows versus trying to apply a given weir angle.
A weir baffle plate also commonly caused a surge plate is a tool that is installed in some weir boxes in order to more effectively control turbulent flow. When a weir box fails to include a weir baffle plate it is usually in an effort to reduce installation costs and to save space. The weir plate is designed to run the full width of the separator.
This helps to minimize unwanted surges within the unit that are deleterious to efficient functioning of the separator. This is important when skim pipes are utilized or if flow rates may change in the future. Our weir plates are available under a variety of dimensions and configurations.
Call Phoenix Precast Products for our fabricated metals at 8006392199. The weir plate is bevelled at the crest edges to obtain necessary thickness. And weir plate should be made of smooth metal which is free from rust and nicks.
Flow over sharp-crested weir is similar as rectangular weir. Weir plate systems from Enduro meet or exceed industry standards for construction and performance. The full product line includes various sizes shapes thicknesses and lengths that can be custom designed for a variety of conditions and applications.
Weir is defined as a barrier over which the water flows in an open channel. The edge or surface over which the water flows is called the crest. The overflowing sheet of water is the nappe.
If the nappe discharges into the air the weir has free discharge. In the weir box or at its end for free-spilling discharges a weir plate is mounted to a bulkhead. The weir plate usually constructed of stainless steel is set perpendicular to the direction of flow through the weir box and level vertically and from side-to-side.
Weir plates are one of the highest quality most versatile flow measurement and management tool that you could ask for making a great choice for natural channel water management operations. Purchase fantastic fiberglass weir plates for your water management system today by partnering with Tracom FRP. The triangular or V-notch thin-plate weir is an accurate flow measuring device particularly suited for small flows.
For a triangular or v-notch weir the flow rate can be. The weir plate is beveled edge at the edges of the crest to achieve the required thickness. And the plate should be made of smooth brass free from corrosion and nicks.
Flow over a sharp-edged weir is similar to a rectangular weir. They are commonly used to assess the water on the farm. Weir plates are a very common open channel flow measurement device and theyre actually a lot easier to understand than they might seem at first glance.
Essentially when you install a weir in an open channel youre obstructing flow for the purpose of measurement. Simply put weir boxes are a tool used to direct open channel flow for measurement purposes. A weir box usually contains a weir plate at the end which contains a notch in the shape of the letter v.
Water is forced over the notch in the weir plate and allows you to take accurate measurements as well as water samples. Weir Thin Plates Thin plate weirs are used for liquid flow measurement where high accuracy is required and are widely used for industrial discharge and final effluent outfall applications. All SIRIS type thin plate weirs are fabricated from Grade 316 stainless steel and machined with a.