Hanna HI 9142 Waterproof Dissolved Oxygen Meter

The Hanna HI 9142 is a rugged, waterproof meter that solves the common problems of field use, such as cold, rain, snow and dust, that can damage a meter, rapidly deteriorating its performance and life.

It is very simple to use: calibration is performed with HI 7040 zero oxygen solution, while 100% calibration is done in air.

The polarographic probe (HI 76407/4) is provided with a membrane covering the sensors and a built-in thermistor for temperature measurement and compensation. The thin permeable membrane isolates the sensor elements from the testing solution, but allows oxygen to enter. When a voltage is applied across the sensor, oxygen that has passed through the membrane reacts causing current to flow, allowing the determination of oxygen.

Specifications:

Dissolved oxygen range: 0.0 to 19.9 mg/L (ppm)

Temperature range: -5.0 to 50.0 °C (23.0 to 122.0 °F)

The HI 9142 is supplied complete with HI 76407 DO probe, HI 76407A/P pre-formed PTFE DO membranes (2), HI 7041S electrolyte solution (30 mL), batteries, instructions and rugged carrying case.

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