Compact and piston automated analyzer Types of detectors available: immersion, drop-in and pipe insertion Long-life optical model and high reliability RS-485 interface equipped as standard specification; compatible with Modbus communication system Meas. range SSD-1610: 0 - 30/500/1000 mg/L SSD-1620: 0 - 5000/10000/20000 mg/L (3-range, manual switching)