The Waltron 9165S LDO Smart Sensor connects through a simple 4-20 mA analog output to a panel monitor or directly to a DCS, providing the same high accuracy and excellent long-term stability as the full-sized 9165 instrument. Its compact design can be used in various online analysis applications throughout many industries, and it can be upgraded with a 9165 transmitter to operate with a full touchscreen interface.

The loop-powered 4-20mA sensor includes a sample flow cell and mounting plate. It connects with any 4-20 mA display and offers a digital connection when used with the 9165 smart display. Measurement ranges include 0-200 ppb, 0-2000 ppb, and 0-45 ppm.

Key benefits include no sensor maintenance (no membrane, no electrolyte), no calibration or service required for up to one year, and no sample interferences. The sensor provides excellent results independent of sample flow rate. With response time of 30 seconds when loop-powered, rugged and compact design, and space-saving elimination of transmitters, the 9165S is ideal for applications requiring reliable DO measurement with minimal maintenance.