Model 5510 Lutron DO  Meter 0 to 20mg/L measure oxygen in air

FEATURES:

• The polarographic type oxygen probe with an incorpo- rated Temp.sensor, high precision measurement for Dissolved Oxygen(DO), Oxygen in air(O2) & Temp. measurement.
• Heavy duty dissolved oxygen probe,probe head can connect with BOD bottle.
• Automatic Temp. compensation from 0 to 50 ? for sensor probe.
• Build in " % SALT " & " Mountain Height " compensation adjustment button.
• Microprocessor circuit.
• Records Maximum, Minimum value.
• RS 232 PC serial interface.