The AOI Series 1300 is a digitally controlled oxygen deficiency monitor designed for reliable, continuous measurement of ambient oxygen levels in safety-critical environments. It is highly recommended for areas where inert gases are stored or piped . The monitor utilizes an extended-life electrochemical sensor with an open diffuser, making it insensitive to air currents and eliminating the need for sample pumps . It provides a clear readout of oxygen concentrations from 0 to 30% on a 4-line by 20-character LCD display, with values displayed to the nearest tenth of a percent .

Designed for personnel safety, the Series 1300 features an 85 dB internal audible alarm and front-panel visual indicators. It includes four individually adjustable Form C alarm relays, each rated at 10 amps (250 VAC), which can be programmed to create up to nine unique alarm events for flexible safety response configurations . A built-in data logger allows for downloading and storing time-stamped oxygen data for compliance and record-keeping. The monitor also offers user-configurable 0-20 mA and 4-20 mA DC outputs and RS-232 serial communications for integration with external systems .

The Series 1300 is built for expandability. While it comes with one local sensor, its advanced digital interface allows for field expansion with up to two optional remote sensors and up to eight optional horn and strobe annunciators. The system automatically detects any added components, simplifying installation and scaling . Housed in a durable NEMA 1 (IP30) rated enclosure and powered by universal 90-264 VAC (or optional 18-36 VDC), it is suitable for wall mounting in laboratories, industrial facilities, and other general-purpose areas . The Series 1300 includes a three-year warranty on both the electronics and the sensor .