12
Dissolved Oxygen Measurement
The AMTAST
portable dissolved oxygen meter is suitable for measuring the water, wastewater, brine and other liquids. If the sample is belong to the
seawater or other water containing large amounts of salt, please setting the salinity coefficient before measurement. Some gas and steam such as chloride,
sulfur dioxide, sulfureted hydrogen, ammonium, carbon dioxide and iodin can permeate the membrane via diffusion. So their existence will influence the
measurement of dissolved oxygen. If the sample contains the solvent, grease, sulfide and alga, the membrane on the probe will be blocked, damaged or
eroded.
1.
Connect the dissolved oxygen probe to meter and wait for 15 minutes to polarize the probe.
2.
If necessary, to set the barometric pressure and salinity coefficient in the setup menu (Refer to page 7 and 8).
3.
Immerse the probe in the sample solution, make sure the temperature sensor on the probe is fully immersed.
4.
Stir the probe gently. Record the measured value when the reading is stable.
Auto-Hold
The meter contains an Auto-Hold function. If enabled, the meter will automatically sense a stable reading and lock the measurements, the HOLD icon
appears on the display. If disabled, press the key, the meter will immediately lock the displayed value. Press the
Meas
key to resume measuring.
Temperature
Sensor
DO901 Portable Dissolved Oxygen Meter
