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Submersible Ozone O3
Probe System
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Insitu measurements and profiling
in shallow water
Accurate - Reliable - Small Dimensions - Easy Handling |
The determination of total dissolved ozone is one of the
most interesting parameters for the analysis of industrial
waters and in the tap water industry after the treatment of the
water with ozone, but also for swimming pools, if the
oxidation of pollutants is realized by means of ozone.
But due to a lot of the ozone’s inconvenient chemical
properties, like high chemical reactivity, very fast reaction
with nearly all kind of compounds which may be oxidized and the
fast concentration exchange between the liquid sample and the
gaseous phase above (mostly air), the determination is difficult.
Even though the sampling and the determination have been done
very carefully, the results are uncertain and mostly
disappointing.
These disadvantages could be avoided, if the new Ozone Probe
is used for the accurate, reliable insitu determination in
depths of up to 100 m.
Compared with all the other commercially available ozone
sensors the amperometric ozone micro-sensor does not require
streaming of the sensor membrane or stirring of the analyte in
case stationary measurements.
The second advantage compared to other ozone sensors is
the very fast response time of the AMT ozone micro-sensor with
t90% below 4,5 seconds compared with a minimum of approximately
80 to 120 seconds in the case of the conventional sensors.
The third advantage is the improved signal stability of the
ozone micro-sensor.
Furthermore, the high local signal resolution allows some new
applications, as for instance the profiling in μm-steps.
Special Features:
=> sensors for
ozone (amperometric micro-sensor), temperature, pH and depth
=> very easy sensor exchange
=> windows based software for
display of chemical/physical units, diagrams
=> free selection of displayed
parameters
=> titanium made housing and
protection cage
=> Subconn titanium connector
=> very small dimensions (48 mm
diameter, 440 mm total length)
=> low weight of 1 kg
=> low running costs for chemical
sensor replacement
The
Submersible Ozone Probe is equipped with a precision
microprocessor-controlled 4-channel 16 bit analogue to digital
converter.
The data are available as RS-232 signal (multi-conductor
polyurethane covered cable) and optional as FSK signal modulated on
constant current (single-conductor cable).
The probe can be powered by battery or DC power supply (9 to 30 V DC)
when using the RS-232 output or by constant current with FSK
telemetry output (coaxial connection) for longer distances.
An interface for constant current supply is available. |
Probe
with removed protection cage.
Sensors for ozone, pH, temperature
and depth.
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Standard
Sensor Equipment
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Sensors
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Principle
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Range
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Accuracy
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Resolution
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Response Time |
| Pressure |
piezo-resistive full
bridge |
10 bar |
+/-0,1% FS |
0,002 %
FS |
150 ms |
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Temperature |
PT 100 |
-2…+36°C |
+/- 0,05°C |
0,0006
°C |
1 sec |
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pH |
single rod electrode |
0…14 pH |
+/-0,02 pH |
0,0002
pH |
1 sec |
| Ozone O3 |
Amperometric
Micro-sensor |
20 μg/l...10 mg/l |
2% of reading |
> 2
μg/l 0,1% |
< 4,5 s (t 90%) |
Further
technical data of the probe system
=> 4-channel
probe
=> RS-232 Interface for
probe configuration, telemetry output, data readout
=> Standard Data Acquisition
Software “SST-SDA” for Windows 95, 98, 2000, ME, NT, XP
Dimensions of the probe:
=> Probe diameter 48 mm
=> Protection cage length
140 mm
=> Total length 440 mm
=> weight in air 1 kg
Electrical features:
=> Input power and RS 232
Interface are galvanic isolated from measuring circuitry
=> Power supply voltage:
9…30 V DC
=> Connector: Subconn MCBH4M
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