Dissolved oxygen meters

The Thermo Scientific Orion Star series of portable optical dissolved oxygen meters includes the single-parameter 3-Star RDO meter, the dual-parameter 4-Star pH/RDO meter and the multi-parameter 5-Star pH/RDO/conductivity meter.

The meters and RDO sensors provide benefits including: annual maintenance with a simple cap replacement for the sensor; no electrolyte to replace for the sensor; sensor cable lengths of up to 30 m; meters featuring a built-in barometer for automatic barometric pressure-compensated dissolved oxygen readings; data storage of readings from 500 to 1000 points (depending on the selected model); and an IP67-rated, waterproof meter housing and IP68-rated, waterproof sensor.

The meters are available in three configurations. The meter-only configuration allows the user to customise the meter with the sensor, cable length and accessories needed. Sensors are available in 3, 6, 10, 15 and 30 m cable lengths. Meter and sensor packages are available in 3 m sensor cable lengths or 6 m sensor cable lengths.

Both meter and sensor packages include a stainless steel RDO sensor guard and calibration sleeve for the sensor. The configuration with the 6 m cable adds a carry case.