Portable Dissolved Oxygen Meter BD330

Portable Dissolved Oxygen Meter BD330

Features

Measures dissolved oxygen in % and mg/L plus temperature

Automatic temperature compensation via temperature in probe provides accurate reading over the entire range

Adjustable barometric and salinity compensation 

°C or °F unit switchable with 0.1°C/0.1°F resolution

Hold function freezes readings for easy viewing and recording

Support 1 and 2 points dissolved oxygen calibration at 100% water-saturated air and in 0 oxygen solution

Equipped with a large backlit LCD display

Comes with a plastic toolbox convenient for in-field use

Powered by 4 AAAA alkaline batteries

Applications   

       M unicipal wastewater/sewage treatment

Environmental water testing

Aquaculture/aquariums for measuring oxygen level in fish and shrimp farming

Natural stream purification system

Boilers

Educational in laboratories and schools

 Biochemical manufacturing

Device

1.      Probe socket

2.      Dissolved oxygen polarographic probe

3.   LCD Display

4.   Keypad and Panel

5.   Tilt stand

 6.    Battery compartment back cover

LCD Display

1.        Mode Status

2.        Low battery indicator

3.        Dissolved oxygen value

4.        Dissolved oxygen units (% or mg/L)

5.        Temperature

6.        Temperature Unit

7.        Barometric pressure (mmHg)

8.        Salinity (in ppt)

Barometric Pressure Compensation

The BD330 uses a user inputted barometric pressure value in mmHg to compensate dissolved oxygen mg/L values. The barometric compensation value entered in the BD330 should be the local barometric pressure value.

Do not use a barometer value that is corrected to sea level. Laboratory barometer readings are usually uncorrected values of air pressure and can be used for barometer calibration.  An approximate formula for this “uncorrection” is:

True Barometric Pressure (mmHg) =

[Corrected BP mmHg] – [2.5 * (Local Altitude in ft. above sea level/100)]

Prior to the calibration or measurement, if true barometric pressure is unknown, users need to set the compatible parameter according to the local altitude. The following table  describes the relationship between altitude and barometric pressure.

Relationship between Altitude and Barometric Pressure

Salinity Compensation

The BD330 uses a user inputted salinity value in ppt (parts per thousands) to compensate dissolved oxygen mg/L values. The salinity compensation value entered in the BD330 should be the salinity value of the water you are testing.

See the “Salinity” item in table 3 of Menu Mode Operations section to adjust the salinity compensation value. The salinity can be adjusted any time without the need to recalibrate dissolved oxygen.

Dissolved Oxygen Specification

Temperature Specification

General Specification