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4 Electrode Minature Dual Gas Sensor for CO and H2S - 4COSH CiTiceL

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• Operating Principle: 3-electrode electrochemical
• Measurement Range:
CO: 0-500 ppm
H2S: 0-200 ppm
• Maximum Overload:
CO: 1500 ppm
H2S: 500 ppm
• Sensitivity:
CO: 80 ± 30 nA/ppm
H2S: 775 ± 275 nA/ppm

Model Number: 4COSH CiTiceL
Data Sheet:

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Product Specification

4COSH CiTiceL
Carbon Monoxide / Hydrogen Sulfide (CO / H2S) Dual Gas Sensor

4COSH CiTiceL CO/H2S Dual Gas Sensor Key Features & Benefits:
• Robust, industry standard 4-Series packaging
• Compact Size

4COSH CiTiceL CO/H2S Dual Gas Sensor Technical Specifications

MEASUREMENT
Operating Principle	3-electrode electrochemical
Measurement Range	CO: 0-500 ppm H2S: 0-200 ppm
Maximum Overload	CO: 1500 ppm H2S: 500 ppm
Filter	To remove H2S from CO channel
Sensitivity*	CO: 80 ± 30 nA/ppm H2S: 775 ± 275 nA/ppm
Response Time (T90)*	CO: <35 Seconds at 20°C H2S: <35 Seconds at 20°C
Typical Baseline Range	CO: -2 to +3 ppm equiv. H2S: -0.4 to +0.4 ppm equiv.
Resolution When using recommended electronics	CO: 1.0 ppm H2S: 0.5 ppm
Repeatability	CO: < 3% of signal H2S: < 2% of signal
Linearity	Linear

ELECTRICAL
Recommended Load Resistor	10 Ω
Bias Voltage	Not required

MECHANICAL
Weight	5 g approx.
Housing Material	ABS
Orientation	Any

ENVIRONMENTAL
Operating Temperature Range	-20°C to +50°C
Recommended Storage Temp	0°C to 20°C
Operating Pressure Range	Atmospheric ± 10%
Operating Humidity Range	15 - 90% RH non-condensing

LIFETIME
Long Term Sensitivity Drift	<30% signal loss/operating life
Expected Operating Life	3 years in air
Storage Life	6 months in CTL container

* Specifications are valid at 20°C, 50% RH and 1013 mBar, using City Technology recommended circuitry. Performance characteristics outline the performance of sensors supplied within the first 3 months. Output signal can drift below the lower limit over time.

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