PS-3224
Introduction
2
013-16057A
Introduction
The PASCO Wireless Optical Dissolved Oxygen Sensor is a versatile measuring device
that can connect to a computer wirelessly through Bluetooth (BLE) or physically through a
USB port. It includes a rechargeable battery and a Micro USB Cable. The sensor
measures the concentration and the saturation percentage of dissolved oxygen
molecules (O
2
) in aqueous solutions. The sensor also simultaneously measures
temperature and barometric pressure. The sensor is particularly useful in applications
related to ecological studies of aquatic environments. In the laboratory, students can
explore the effects of temperature, water movements, inorganic chemicals, organic
matter, and living organisms affect on levels of dissolved oxygen. In the field, students
can monitor dissolved oxygen as a part of ecological surveys of aqueous habitats,
including Biological Oxygen Demand (BOD) studies.
Note: The sensing element in the end of the probe can be replaced with the PS-3604
Optical Dissolved Oxygen Probe Sensor Cap described at the end of the manual.
SPARKvue allows the sensor to work with a mobile device such as a tablet or
smart-phone when the sensor is connected. PASCO Capstone will work on a PC or Mac.
The Optical Dissolved Oxygen Sensor has several advantages when compared to a
galvanic (electrochemical) dissolved oxygen sensor including the following:
* Barometric pressure is recorded and stored only when the sensor is initially connected via Bluetooth or USB.
Initial Step: Charge the Battery
•
Connect the Cable
: Remove the transparent cover from
the sensor. Use the included Micro USB Cable to
connect the micro USB port on the top of the sensor to a
USB
port
or USB
charger
such as the PASCO PS-2575
USB Single Port Charger. Charging begins
automatically. The charger circuit inside the sensor turns
itself off when the unit is fully charged. The battery status
LED will shine yellow as the battery is charging, and will
shine green when the battery is charged. The battery is
partially charged at the factory. Initial charging time may
be three hours or longer depending on the power source
and the condition of the battery.
Using the Sensor
The sensor is designed to work with PASCO data collection software to measure the concentration and saturation
percentage of dissolved oxygen.
ON/OFF Information
To turn the sensor on, remove the clear cover and then press the ON button. The status LEDs will blink. To turn the
sensor off, press and
hold
the ON button for a moment until the status LEDs stop blinking. The sensor puts itself to
sleep after one hour of inactivity if connected, and after several minutes if not connected.
•
No warm up time
•
No calibration required
•
No filling solution or electrode polishing
•
No flow dependency
•
built-in temperature and barometric pressure compensation*
Cover
Sensor
Probe
Rubber
Boot
Battery
LED
Micro
USB Port
ON/OFF
Button
Device
ID
Bluetooth
LED
