The WellMark Series 685I, 685S, and 685S Multiswitch Hydrostatic Liquid Head Indicator Switches Major style Liquid head pressure type level indicator (up to 7 independent switches). It continuously indicates the liquid level in an atmospheric (vented) tank in feet and inches. Available for calibration for horizontal cylindrical vessels or in pounds, gallons, barrels, percent, etc.   Click Here for the 685 Brochure Click Here for 685 Model Number Creator Click Here for 685I Catalog Pages Click Here for 685S Catalog Pages Click Here for 685S Multiswitch Catalog Pages Click Here for more in information on "Snubber" Pulsation Dampener on 685 Click Here for IOM

The WellMark Series 685E Major Style electro-mechanical level control device, which accomplishes three (3) main functions. These are remote indication, local liquid level indication, and hi-low adjustable switch outputs. The unit continuously indicates the liquid level and transmits a proportional signal. Click Here for 685E Catalog Pages    Click Here for 685ER Brochure - Discontinued Product