Weir boxes provide the utmost in versatility when it comes to how the flow enters and exist the box. Flow can be piped inline, offset, or even free-spilling into and out of the box. However, sometimes this flexibility can cause problems when it comes to accurate flow measurement.
The ability for flow to free-spill into a weir box can save space and cost – eliminating the need to force the flow to pipped into the end of the weir box. Unfortunately, a considerable amount of splashing (and foaming) can occur as the water spills into the box.
While all Openchannelflow weir boxes are provided with underflow baffles to help condition the flow, splashing can create surface waves that overtop the underflow baffle, which can in turn create difficulties in obtaining an accurate level reading.
Splash guards can help to eliminate this splashing interference – while at the same time containing any foam generated by the flow spilling into to the weir box.
Openchannelflow weir box splash guards bolt to the top of the weir box and are intended to be removable so as to aid the operator in the event that maintenance or cleaning of the weir pool becomes necessary.
Weir box splash guards can be ordered with new weir boxes or retrofit guards can be fabricated if the need arises after a weir box is already in. Additionally, in applications where the flow stream is corrosive or otherwise needs certain containment, fully enclosed custom splash guards are available. These guards are provided with pipe stubs or flanges (as necessary) and are fully enclosed.