Ultra Trace Sensor; Ultra Trace Sensor Components - Teledyne 3060E Instruction Manual

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Ultra Trace Sensor

The analyzer incorporates an electrochemical ultra trace O
designed by TET/AI (U.S. Patent #5,085,760). The sensor shows exception-
ally high sensitivity for O
accurate sensing element of the sensor enables it to detect as low as 0.5 PPB
of O in a gas mixture.
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Ultra Trace Sensor Components

The components of the sensor are shown in Figure 2-2. The main body of the
sensor is made of clear acrylic. The sensor has a U-shaped profile with an open
top end. The left-hand wall of the sensor has a circular aperture for mounting
the O -sensing cathode. A high surface area cadmium anode is inserted through
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the top stainless steel plate. A fine porous frit disc is mounted at the bottom of
the sensor in order to remove any dissolved O
electrolyte with O
the sensing electrode to minimize the noise level caused by the sparger.
The main body of the sensor contains 15% aqueous KOH electrolyte. A
thermistor is inserted into the sensor's main body through an opening on the top
stainless steel mounting plate. The opening serves as a port for adding water/
electrolyte to the sensor. An electrolyte level detector is also mounted through
the top stainless steel plate.
CADMIUM ANODE
CATHODE
SAMPLE IN
SAMPLE OUT
SIDE STAINLESS
STEEL PLATE
and remarkable long-term stability. The highly
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free gas. A baffle plate is inserted between the sparger and
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PURGE GAS OUT
WATER LEVEL
DETECTOR
(-)
O-RING
(+)
CATHODE
Figure 2-2. Ultra Trace Sensor Components
Teledyne Electronic Technologies
Analytical Instruments
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sensor exclusively
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by continuously sparging the
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THERMISTOR
PURGE GAS IN
TOP STAINLESS
STEEL PLATE
ELECTROLYTE
BAFFLE PLATE
ZERO GAS BUBBLES
(OXYGEN-FREE)
CELL BODY
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