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Japan Storage Battery
has developed the galvanic cell type oxygen sensor based
on its technologies in fuel cells and lead-acid batteries.
While the conventional galvanic cell type oxygen sensor
was affected by CO2 and
its life was short, because an aqueous solution of KOH
was used as the electrolyte, our oxygen sensor using
a weak acid electrolyte is not affected by any acidic
gas and its life is 10 to 20 times as that of the conventional
sensor.
Therefore, our oxygen sensor will find new and wide
range of applications. |
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Medical Use
/ Anesthesia, Respirator, Oxygen concentrator |
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Bio-Technology
/ Oxygen Incubator, Anaerobic Cultivator |
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Food
/ Refrigerator, Vegetable Factory |
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Home Security
System / Air-Conditioning & Oxygen deficiency
Alarm System, Fire Alarm System |
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Measuring on
industry / Exhaust gas, Combusion devices |
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Extremely long life
(5 to 10 years) |
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No affection by carbon
dioxide |
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High stable output voltage |
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No outside electric source
for driving sensor |
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Operative in the normal
temperature |
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No warming time |
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Economical |
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Our oxygen sensor comprises a lead-oxygen battery consisted
of a lead anode, an oxygen cathode made up of gold and
a week acid electrolyte, as depicted in Fig.1. The gold
electrode is bonded onto a non-porous Teflon FEP membrane.
A small amount of oxygen permeating through the membrane
is reduced electrochemically at the gold electrode.
A resistance and a thermistor for temperature compensation
are connected between the cathode and the anode and
therefore, the lead-oxygen battery is always discharged.
The current which flows through the resistance and the
thermistor is proportional to the oxygen concentration
(strictly speaking, Oxygen partial pressure) of the
ambient atmosphere in contact with the Teflon FEP membrane.
Therefore, by measuring the voltage between the ends
of the resistance an |
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| Spec/Model |
KE-50 |
KE-25 |
| Features |
Long
life |
Quick
response,
high accuracy |
| O2
Range |
0-100%
O2 |
0-100%
O2 |
| Accuracy |
±
2% |
±
1% |
| Temperature
Range |
5-40
°C |
5-40
°C |
90%
Response
Time |
60
seconds |
12
seconds |
Life
Expectancy |
180
X 104%h
(10 years
in20°C Air) |
90
X 104%h
(5 years
in20°C Air) |
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| Spec/Model |
KE-12 |
SK-25 |
| Features |
Very
quick response |
Quick
Response,high accuracy |
| O2
Range |
0-100%
O2 |
0-30%
O2 |
| Accuracy |
±
1% |
±
1% |
| Temperature
Range |
5-40
°C |
5-40
°C |
90%
Response
Time |
5
seconds |
15
seconds |
Life
Expectancy |
45
X 104%h
(2.5 years
in20°C Air) |
45
X 104%h
(2.5 years
in20°C Air) |
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1.Viewpoint of sensor life
The life expectancy of the oxygen sensor is expressed with
the value of ( % of oxygen concentration)×(hr of time).Yet,
it is in the case that a sensor used it under the regular
conditions of 60% relative humidity, 1013hpa air pressure,
and 20°C temperature.
For example, a sensor of 10,000%h life expectancy has 100h
life time during the 100% oxygen.
2.KE-12 model is the order received raw product. |
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[
KE-50 / KE-25 / KE-12 ]
* Form can be changed according
to a use. |
[SK-25] |
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