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Revised 09/22
TECHNICAL INFORMATION FOR KE-SERIES
TECHNICAL INFORMATION FOR KE-SERIES
Technical Information for Maxell Oxygen Sensor KE-Series
The Maxell Oxygen Sensor
KE-Series is a unique galvanic
cell type oxygen sensor which
provides a linear output voltage
signal relative to percent oxygen
present in a particular atmosphere.
The sensor features long life
expectancy, excellent chemical
durability, and it is not influenced
by CO
, making it ideal for
2
oxygen monitoring.
Introduction...............................................................................................2
Features...............................................................................................2
Applications.......................................................................................2
Structure and Operating Principle.................................................2
Specifications.........................................................................2
Absolute Maximum Operating and Storage Conditions............3
Dimensions.................................................................................3
Sensitivity to Oxygen...........................................................................4
Response Speed..............................................................................4
Influence from Various Gases...........................................................4
Effects of Pressure Change......................................................5
Humidity Dependency...........................................................5
Temperature Dependency..................................................................6
Influence of Organic Solvents.....................................................6
Life Expectancy.................................................................................6
Long Term Stability...........................................................................7
Cautions.................................................................................................7
Limited Warranty and Limitation of Liability..........................................9
Page
Concentration..............6
2
1
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Summary of Contents for Figaro KE Series
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Page 1: Table Of Contents
TECHNICAL INFORMATION FOR KE-SERIES TECHNICAL INFORMATION FOR KE-SERIES Technical Information for Maxell Oxygen Sensor KE-Series The Maxell Oxygen Sensor KE-Series is a unique galvanic cell type oxygen sensor which provides a linear output voltage signal relative to percent oxygen present in a particular atmosphere. The sensor features long life expectancy, excellent chemical durability, and it is not influenced... -
Page 2: Introduction
1. Introduction Compensating Resistor Bottom Lid Lead Wire (-) The Maxell Oxygen Sensor KE series (KE-25 and KE-50) is a unique galvanic cell type oxygen sensor. Its most Air Bubble notable features are a long life expectancy, excellent Lead Wire (+) -
Page 3: Absolute Maximum Operating And Storage Conditions
TECHNICAL INFORMATION FOR KE-SERIES TECHNICAL INFORMATION FOR KE-SERIES Model Item Lower limit Upper limit Item KE-25 KE-50 Pressure 507hPA 1520hPA (Note 1) (Note 2) Measurement range 0~100% O Temperature -20˚C 60˚C Accuracy ±1% full scale ±2% full scale (Note 1) (Note 3) (Note 4) Atmospheric pressure... -
Page 4: Typical Sensitivity Characteristics
TECHNICAL INFORMATION FOR KE-SERIES TECHNICAL INFORMATION FOR KE-SERIES 3. Typical Sensitivity Characteristics max. 3-1 Sensitivity to oxygen typ. Figures 3a and 3b show the sensitivity characteristics of the KE sensors. The Y-axis indicates the output min. voltage of the sensor. 3-2 Response time Figure 4 demonstrates the response pattern of the sensor's output voltage. -
Page 5: Effects Of Pressure Change
TECHNICAL INFORMATION FOR KE-SERIES TECHNICAL INFORMATION FOR KE-SERIES 3-4 Effects of pressure change The pressure dependency of KE-50 can be seen in max. Figure 5. In this range of atmospheric pressure, sensor typ. output voltage maintains a linear relationship when compared with atmospheric pressure. -
Page 6: Temperature Dependency
(see Fig. 1). The typ. temperature dependency of the KE series with this built-in compensation circuit is shown in Figs. 8a and 8b. min. The KE sensor may show some transient char- acteristics if the ambient temperature changes very widely and quickly. -
Page 7: Long Term Stability
TECHNICAL INFORMATION FOR KE-SERIES TECHNICAL INFORMATION FOR KE-SERIES output voltage of the sensor. These facts indicate that the expected life time in ambient conditions (21% O at 20˚C) is 10 years for KE-50 and 5 years for KE-25. a) Relationship between expected life and O concentration Figure 9a shows the relationship between life expectancy and O... - Page 8 TECHNICAL INFORMATION FOR KE-SERIES TECHNICAL INFORMATION FOR KE-SERIES kept motionless in natural air/room temperature 5-6 Influence of condensation for between several hours to several days. If the Measures should be taken to prevent condensation mechanical shock or vibration is great, an irreversible on the sensor because the output signal will degrade change in the output signal may occur due to and response speed will decrease, causing inaccurate...
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Page 9: Limited Warranty And Limitation Of Liability
Figaro. the purchaser intends to use the KE-series products Provided that return of the sensor to Figaro is made for incorporation into or with the Medical devices, within the warranty period, if it is determined upon... - Page 10 Medical devices in accordance with applicable regional, national, and local laws and regulations. Figaro reserves the right to make changes without notice to any products herein to improve reliability, functioning or design. Information contained in this document is believed to be reliable. However,...
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