Profile: BVS, Inc. is a manufacturer of automatic samplers for water pollution surveillance & control, manufacturing process and batch control, & for acquiring accurate samples for municipal surcharge billing. We design & manufacture automatic samplers. We can custom design a sampler to meet special requirements. The BVS model SPE-400 electro-pneumatic, composite sampler is virtually maintenance-free, with a standard lift of eighty (80) feet, with higher lifts available. All our samplers can take samples by the built-in manual timer, or flow-proportionally when supplied with a dry contact closure or an optional signal converter to accept a 4-20 ma flow signal. The BVS, SPE-400 automatic liquid sampling station is a complete, factory built, turnkey system designed to take composite samples on an unattended basis. Its pneumatic-electric operation is equally effective in performing tasks from batch control to monitoring effluents. The model SPE-400 is intended for permanent on-site installation where liquid sampling is necessary. The cabinet is constructed of durable, 1/8 inch, reinforced, primed aluminum protected by an electrostatic powder coat. It provides a significant increase in the efficiency and cost effectiveness of continuous sampling by eliminating the time, labor & money attendant to manual collection. Its automatic sampling frequency can be based on a predetermined schedule by using the built-in rate timer or, alternatively, on proportional flow of the stream by using an external flow meter.