PS1-SO2-50
Sulfur Dioxide
sensor
Datasheet
PS4-SO2-50
SGX Solid Polymer Electrolyte Gas Sensors
The SGX series of PS1 and PS4 Electrochemical gas sensors are using a revolutionary ‘Solid Polymer
Electrolyte’ technology that is based on the principle of catalytic reaction. The target gas to be measured
generates a very small current, proportional to the gas concentration. Our technology offers a stable, high
quality and cost-effective manufacturing process. The SGX solid polymer electrolyte gas sensors are
available in a very small size, are highly sensitive, do not use power and have very low cross sensitivity
from other gases.
Quality, Safety, Responsibility
SGX Europe Sp. z o.o.
T: +48 (0) 32 438 4778
Konduktorska 42 St.,
40-155 Katowice,
Poland
E: sales.is@sgxsensortech.com
www.sgxsensortech.com
Technical Specifications
Performance
Sensitivity
20 ± 10 nA / ppm
Measurement Range
0 – 50ppm
Zero Current
± 2 nA
Maximum Overload
100 ppm
Response Time
Repeatability
T50 < 20s,
T90 < 60s
1%
Lower Detectable Limit (LDL)
1 ppm
Linear Range
50 ppm
Resolution (16Bit ADC)
0.1ppm
PS1-SO2-50
PS4-SO2-50
Features
• Small size
• High sensitivity
Environmental Details
Temperature Range
Pressure Range
Operating Humidity Range
Storage Temperature
• Wide temperature range
-40°C to +55°C
• Fast response time
800 to 1200 hPA
• No electrolyte leakage
15-95% RH
• Low cost at large volumes
0 to 20℃
• Individually calibrated (including test report)
Lifetime Details
Long-Term Drift
Expected Lifetime
Zero Drift in Clean Air
Storage conditions
< 1 %/month
> 3 years in air
< 0.2 ppm
0-20 °C
Storage Life
12 months
Warranty
12 months
Operation
Operating Principle
Amperometric,
3-electrode
Bias Voltage
0 mV
Recommended Load Resistor
100 Ω
Warm Up Time
< 60 s
Housing
Housing Material
Weight
© SGX Sensortech 2012-2022
PPO
PS1-SO2-50 < 0.7g
PS4-SO2-50 < 6g
Key applications
•
•
•
•
TLV Monitoring
Steel Industry
Emission Monitoring
Oil & Petrochemical Industry
Important Notes
• All performance is based on conditions at 20°C,
50% RH and 1 atm, flow rate>150qcm/min,
using SGX recommended circuitry.
• Sensor performance is temperature dependant;
please contact SGX for temperature
performance other than 20°C.
• Do not solder to the connector pins as this may
damage the sensor and thereby invalidate the
warranty.
• Details on recommended connector pins can be
found in the Frequently Asked Questions within
the Gas Sensor section of the SGX website.
DS-0394-PS1&PS4-SO2-50, Issue 1, 27-Jan-2022, Page 1/3
SGX Europe Sp. z o.o.
T: +48 (0) 32 438 4778
Konduktorska 42 St.,
40-155 Katowice,
Poland
E: sales.is@sgxsensortech.com
www.sgxsensortech.com
Dimensions
C
S
R
PS1-SO2-50
W
R
C
PS4-SO2-50
Cross Sensitivity
Gas
Formula
Test Concentration
Sensor Reading
Ammonia
NH3
50ppm
0ppm
Carbon Dioxide
CO2
1000ppm
0ppm
Carbon Monoxide
CO
50ppm
0ppm
Chlorine
Cl2
10ppm
-1ppm
Hydrocarbons (unsaturated)
Hydrogen
Hydrogen Cyanide
/
/
n.a
H2
100ppm
0ppm
HCN
10ppm
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