Range

Maximum Overload

Resolution

DATA 

Brand

model

0-20ppm

150ppm

0.1ppm

Output Signal:0.5±0.1μA/ppm；T90＜25S；Expected Operating Life24months；3-electrode electrochemical；Not required

CITY

4S Rev.2

100ppm

0.1ppm

Output Signal:0.5±0.1μA/ppm；T90＜45S；Expected Operating Life24months；3-electrode electrochemical；Not required

SolidsenS

4SO2-20

Output Signal:0.5±0.1μA/ppm；T90＜45S；Expected Operating Life24months；3-electrode electrochemical；Not required

SolidsenS

7SO2-20

0-50ppm

75ppm

0.1ppm

Output Signal:450-750nA/ppm；T90＜25S；Expected Operating Life48months；3-electrode electrochemical；Not required 

alphasense

SO2-AF

0-100ppm

500ppm

0.5ppm

Output Signal:0.37±0.07μA/ppm；T90＜20S；Expected Operating Life24months；3-electrode electrochemical；Not required

CITY

7ST/F

1000ppm

0.1ppm

Output Signal:300-440nA/ppm；T90＜30S；Expected Operating Life48months；3-electrode electrochemical；Not required

alphasense

SO2-BF

0-2000ppm

4000ppm

5ppm

Output Signal:0.02±0.008μA/ppm；T90＜60S；Expected Operating Life24months；3-electrode electrochemical；Not required

SolidsenS

4SO2-2000 

Output Signal:0.02±0.008μA/ppm；T90＜60S；Expected Operating Life24months；3-electrode electrochemical；Not required

SolidsenS

7SO2-2000

5000ppm

1ppm

Output Signal:0.10±0.02μA/ppm；T90＜35S；Expected Operating Life24months；3-electrode electrochemical；Not required

CITY

3SF/F

Output Signal:0.10±0.02μA/ppm；T90＜40S；Expected Operating Life24months；3-electrode electrochemical；Not required

CITY

5SF/F

10000ppm

1.5ppm

Output Signal:55-80nA/ppm；T90＜25S；Expected Operating Life48months；3-electrode electrochemical；Not required 

alphasense

SO2-AE

2ppm

Output Signal:70-85nA/ppm；T90＜30S；Expected Operating Life48months；3-electrode electrochemical；Not required 

alphasense

SO2-BE