Range

Maximum Overload

Resolution

DATA 

Brand

model

0-5ppm

20ppm

30ppb

Output Signal:2200±500nA/ppm；T90＜30S；Expected Operating Life24months；3-electrode electrochemical；Not required

CITY

PH3 3E 5

0.05ppm

Output Signal:1.7±0.3μA/ppm；T90＜60S；Expected Operating Life24months；3-electrode electrochemical；Not required

CITY

4PH

0-10ppm

75ppm

0.03ppm

Output Signal:600-800nA/ppm；T90＜25S；Expected Operating Life48months；3-electrode electrochemical；Not required

alphasense

PH3-A1

150ppm

0.03ppm

Output Signal:650-1000nA/ppm；T90＜15S；Expected Operating Life48months；3-electrode electrochemical；Not required

alphasense

PH3-B1

0-20ppm

100ppm

0.1ppm

Output Signal:1.4±0.6μA/ppm；T90＜60S；Expected Operating Life24months；3-electrode electrochemical；Not required

SolidsenS

4PH3-20

0-1000ppm

1000ppm

10ppm

Output Signal:0.07±0.04μA/ppm；T90＜60S；Expected Operating Life24months；3-electrode electrochemical；Not required

SolidsenS

4PH3-1000

0-2000ppm

2000ppm

1ppm

Output Signal:0.07±0.04μA/ppm；T90＜60S；Expected Operating Life24months；3-electrode electrochemical；Not required

SolidsenS

7PH3-2000

5000ppm

2ppm

Output Signal:15-25nA/ppm；T90＜25S；Expected Operating Life48months；3-electrode electrochemical；Not required 

alphasense

PH3-BE