PASCO PS-2108 Dissolved Oxygen Sensor - Manual (Page 5)

Model No. PS-2108 Dissolved Oxygen Sensor
1 ®
PASPort Dissolved Oxygen
Sensor
Model No. PS-2108
Equipment List
*Use Replacement Model Numbers to expedite replacement orders.
Introduction
The PASCO PS-2108 Dissolved Oxygen Sensor can be used to monitor and explore factors
that affect the concentrations of dissolved oxygen molecules (O
2
) in aqueous solutions,
particularly in applications related to ecological studies of water environments. The
Dissolved Oxygen Sensor is specifically designed for use with a PASPort interface or logger,
plus DataStudio
®
data acquisition software. In the laboratory, students can explore the effects
of temperature, water movement, inorganic chemicals, organic matter, and living organisms
on levels of dissolved O
2
. They can also monitor dissolved O
2
levels in the field as a part of
ecological surveys of aqueous habitats, including BOD (Biological Oxygen Demand) studies.
The Dissolved Oxygen Sensor is designed for use in aqueous media at temperatures ranging
from 10 °C to 40 °C. For greatest accuracy, the following requirements should be met:
although the unit is temperature compensated, it should be calibrated at approximately the
same temperature as the test solution; the sensor must equilibrate for a short period when the
temperature of the test solution changes-the greater the temperature change, the longer the
period of equilibration required; the test solution should constantly flow past the membrane
of the probe.
The Dissolved Oxygen Sensor has a polarographic probe composed of a platinum cathode
and a silver (Ag) anode surrounded by a potassium chloride (KCl
(aq)
) electrolyte solution.
Included Equipment Replacement
Model Number*
1. Dissolved Oxygen Probe (1) 699-06320
2. PASPORT Dissolved Oxygen Sensor box (1)
3. Membrane Replacement Kit (1) CI-6541
4. Soaker Bottle (1)
5. Electrolyte Solution (1) R001068
6. Syringe for filling cartridge housing (1)
*PASPORT sensors require a PASPORT computer interface.