The Waltron 9165S sequenced LDO analyzer, paired with a new sequencing system, utilizes the same reliable luminescent technology for measuring dissolved oxygen in water at ppb levels. This analyzer system provides high accuracy and excellent long-term stability for up to four sample points.

Luminescent technology features superior benefits and cost savings compared to traditional dissolved oxygen sensing technologies. Key features include no sensor maintenance (no membrane, no electrolyte), no calibration or service required for up to a year, and a yearly sensor exchange program. Measurement ranges are 0-2000 ppb and 0-45 ppm.

The analyzer offers adjustable time on sample with sensor readings every 30 seconds. It experiences no sample interferences and delivers excellent results independent of sample flow rate. The rugged design includes four dedicated 4-20mA outputs and operates on 100-240 VAC, with an accuracy of ±0.6 ppb at 1 ppb or 2% of the measured value.