With maximum error rate of less than 2%, Triton DO8 offers repeatability of ±0.5% and resolution of 0.01 ppm or 0.01% saturation. It provides 3 different outputs including 0 to 20 ppm, 0 to 200% saturation, or 0 to 500 psi, withstands ambient temperatures up to 140°F, and records measurements at 20 to 120°F. Self-monitoring unit uses fluorescence quenching optical technology coupled with microprocessor-based electronics, and stores calibration data within sensor.