The SCA-1/1L is a single range field mountable CORRATER® instrument for continuous corrosion monitoring of water systems. The instrument is particularly suited to on-line monitoring applications where chemical treatment is being employed and compliance with regulatory standards is highly important. The lower range units are particularly useful in potable water applications where the corrosion rates of lead, copper and carbon steel are low. This system will assist municipal water authorities in determining the chemical treatment effectiveness to reduce lead content according to EPA regulations. The higher range is more applicable to cooling waters where the effectiveness of chemical treatment programs are being evaluated. The SCA-1/1L is compatible with all CORRATER® probes and different alloys can be accommodated by selecting the multiplier on the front panel.