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Amphenol PS4-SO2-50 sulfur dioxide sensor calibrated for amperometric detection in harsh industrial environments

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Amphenol PS4-SO2-50 sulfur dioxide sensor calibrated for amperometric detection in harsh industrial environments

Description : Gas Sensor RoHS

Mfr. Part # : PS4-SO2-50

Model Number : PS4-SO2-50

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Product Overview

The SGX series of PS1 and PS4 Sulfur Dioxide (SO2) gas sensors utilize a revolutionary Solid Polymer Electrolyte (SPE) technology based on catalytic reaction. These sensors generate a small current proportional to the target gas concentration, offering a stable, high-quality, and cost-effective manufacturing process. They are characterized by their very small size, high sensitivity, low power consumption, and minimal cross-sensitivity to other gases. Ideal for TLV monitoring, the steel industry, emission monitoring, and the oil & petrochemical industry, these sensors provide reliable performance in demanding environments.

Product Attributes

Brand: SGX
Technology: Solid Polymer Electrolyte (SPE)
Operating Principle: Amperometric, 3-electrode
Housing Material: PPO
Calibration: Individually calibrated (including test report)

Technical Specifications

Specification	PS1-SO2-50	PS4-SO2-50
Weight	< 0.7g	< 6g
Sensitivity	20 10 nA / ppm
Measurement Range	0 50ppm
Zero Current	2 nA
Maximum Overload	100 ppm
Response Time (T50)	< 20s
Response Time (T90)	< 60s
Repeatability	1%
Lower Detectable Limit (LDL)	1 ppm
Linear Range	50 ppm
Resolution (16Bit ADC)	0.1ppm
Operating Humidity Range	15-95% RH
Pressure Range	800 to 1200 hPa
Storage Temperature	0 to 20
Temperature Range	-40C to +55C
Recommended Load Resistor	100
Bias Voltage	0 mV
Warm Up Time	< 60 s
Long-Term Drift	< 1 %/month
Zero Drift in Clean Air	< 0.2 ppm
Storage Life	12 months
Expected Lifetime	> 3 years in air
Warranty	12 months

Key Features

Small size
High sensitivity
Wide temperature range
Fast response time
No electrolyte leakage
Low cost at large volumes
Individually calibrated (including test report)

Key Applications

TLV Monitoring
Steel Industry
Emission Monitoring
Oil & Petrochemical Industry

Handling Precautions

Do not solder the sensor directly onto a PCB or to wires; excessive heat could cause damage.
Use PCB sockets and firmly push-fit the sensor into the application to achieve a correct electrical connection.
Avoid exposure to high concentrations of solvent vapours during storage, fitting, and operation.
When using sensors on printed circuit boards (PCBs), use degreasing agents prior to fitting the sensor.
For life safety performance requirements, check sensors and instruments for response to gas before use.

Cross Sensitivity

Gas	Formula	Test Concentration	Sensor Reading
Ammonia	NH3	50ppm	0ppm
Carbon Dioxide	CO2	1000ppm	0ppm
Carbon Monoxide	CO	50ppm	0ppm
Chlorine	Cl2 / H2	10ppm	-1ppm
Hydrocarbons (unsaturated)	C3H8O	100ppm	n.a
Hydrogen Cyanide	HCN	10ppm	<5ppm
Isopropanol	C3H8O	1000ppm	n.a
Nitric Oxide	NO	25ppm	<-3ppm

Note: Interference factors may vary. Refer to actual test results. This table is not exhaustive; contact SGX for other gases.

2411261443_Amphenol-PS4-SO2-50_C6358711.pdf

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