Portable Oxygen Meter

The Hanna HI 9146 is a water-resistant, microprocessor-based, dissolved oxygen meter with automatic calibration and temperature compensation (ATC). DO measurements can be displayed in parts per million (ppm=mg/L) ranging from 0.00 to 45.00 or in % of saturation ranging from 0.0 to 300.0%. The temperature range is indicated in Celsius from 0 to 50C with 0.1 resolution. This meter also allows manual compensation of altitude and salinity values. The polarographic probe, supplied with the instrument, is provided with a protective cover for the membrane. A HOLD button allows the user to freeze the reading on the LCD. The HI 9146 can be powered with batteries (with low battery indicator) or through a 12V DC adapter. This unit includes a 4 meter long cable but the unit can be purchased with a 10 meter cable instead at a slightly higher price.