I. Characteristics of oxygen sensors (KE-25, KE-25F3, KE-50, KE-25F4):
(1) Long service life (KE-25-5 years, KE-50-10 years)
(2) It is not affected by CO2, CO, H2S, NOx and H2.
(3) low cost
(4) working at normal temperature
(5) the signal output
(6) No external power supply is needed
(7) No heating is required
Second, the oxygen sensor (KE-25, KE-50, KE-25F3, KE-25F4) performance:
Detection range: 0-100% O2
Accuracy: ke-25&ke-25f3: 1% (full range); Ke-50: 2% (full range); Ke-25f4: 1% (full range);
Working temperature: 5 ~ 40℃
Storage temperature:-20 ~+60℃
Response time: ke-25&ke-25f3: 14 2 seconds; Ke-50: 60 5 seconds Ke-25f4: 5 1 second;
Output in air: ke-25&ke-25f3: 10.0–15.5mv; KE-50：47.0-65.0mv; KE-25F4 :10-15.5mv
Life expectancy: KE-25&KE-25F3: 5 years; Ke-50: 10 years Ke-25f4: 2.5 years;
III. Interface types of oxygen sensors (KE-25, KE-50, KE-25F3, KE-25F4):
KE-25: standard, regular hexagonal base;
KE-50: round top cover and regular hexagonal base;
KE-25F3: round top cover and threaded base;
KE-25F4: Round top cover and cylindrical base (with apron)
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