Lockable enclosure is rated NEMA 4X and IP56 for watertight, dust-tight, corrosion resistant operation. 
Built-in heaters ensure dependable outdoor operation in cold climates. 
A sampler relay will signal your sampler to collect flow proportioned samples. 
Built-in level to flow conversions are included for most weirs, flumes, and other devices 
Non-resettable mechanical totalizer provides tamper-proof record of cumulative flow