Manual

18
9.1 95-8616
appenDix a

Typical Cross Sensitivity of H
2
S Sensor (0-20 ppm / 0-50 ppm / 0-100 ppm)
Gas Concentration Reading
Carbon monoxide 300 ppm ≤ 2 ppm
Sulfur dioxide 5 ppm ~ 1 ppm
Nitric oxide 35 ppm < 0.7 ppm
Hydrogen 10000 ppm ≤ 10 ppm
Nitrogen dioxide 5 ppm ~ –1 ppm
Factory Mutual Performance Approved Electrochemical Gas Sensors
* Time to reach percentage of nal reading when gas concentration equal to full scale is applied to sensor.
** Background concentrations of ammonia may shorten lifetime of sensor.
*** Sensor approved for oxygen depletion (< 21% V/V) only.
Gas Range Response Time*

Reading
(Whichever
is Greater)
Operating
Temperature Range


Approved Standard
Hydrogen Sulde
(H
2
S)
0-20 PPM
T50 = 10 Sec.
T90 = 23 Sec.
±2 ppm or
±10% of Reading
–40°C to +50°C ± 1 ppm/Mo. ISA 92.00.01
Hydrogen Sulde
(H
2
S)
0-50 PPM
T50 = 10 Sec.
T90 = 23 Sec.
±2 ppm or
±10% of Reading
–40°C to +50°C ± 1 ppm/Mo. ISA 92.00.01
Hydrogen Sulde
(H
2
S)
0-100 PPM
T50 = 12 Sec.
T90 = 28 Sec.
±2 ppm or
±10% of Reading
–40°C to +50°C ± 2 ppm/Mo. ISA 92.00.01
Ammonia (NH
3
) 0-100 PPM**
T50 = 24 Sec.
T90 = 65 Sec.
±4 ppm or
±10% of Reading
–20°C to +40°C ± 2 ppm/Mo. FM6340
Ammonia (NH
3
) 0-500 PPM**
T50 = 30 Sec.
T90 = 120 Sec.
±4 ppm or
±10% of Reading
–20°C to +40°C ± 10 ppm/Mo.
Det-Tronics Veried
(CSA Exd)
Oxygen (O
2
) 0-25% V/V***
T20 = 7 Sec.
T90 = 30 Sec.
< 0.5% V/V –20°C to +50°C < 2 %/Mo. BS EN 50104
Carbon
Monoxide (CO)
0-100 PPM
T50 = 15 Sec.
T90 = 40 Sec.
±5 ppm or
±10% of Reading
–20°C to +50°C ± 2 ppm/Mo. ISA 92.00.01
Carbon
Monoxide (CO)
0-500 PPM
T50 = 12 Sec.
T90 = 25 Sec.
±5 ppm or
±10% of Reading
–20°C to +50°C ± 9 ppm/Mo. ISA 92.00.01
Sulfur Dioxide
(SO
2
)
0-20 PPM
T50 = 12 Sec.
T90 = 30 Sec.
±0.6 ppm or
±10% of Reading
–20°C to +50°C ± 0.4 ppm/Mo.
Det-Tronics Veried
(CSA Exd)
Sulfur Dioxide
(SO
2
)
0-100 PPM
T50 = 15 Sec.
T90 = 35 Sec.
±0.6 ppm or
±10% of Reading
–20°C to +50°C ± 0.4 ppm/Mo.
Det-Tronics Veried
(CSA Exd)
Chlorine
(Cl
2
)
0-10 PPM
T50 = ≤14 Sec.
T90 = ≤34 Sec.
±0.6 ppm or
±10% of Reading
–20°C to +50°C < 0.2 ppm/Mo. FM6340
Hydrogen
(H
2
)
0-1,000 PPM
T50 = 8 Sec.
T90 = 60 Sec.
±50 ppm or
±10% of Reading
–20°C to +40°C ± 20 ppm/Mo.
Det-Tronics Veried
(CSA Exd)
Nitrogen Dioxide
(NO
2
)
0-20 PPM
T50 = 7 Sec.
T90 = 31 Sec.
±2 ppm or
±10% of Reading
–20°C to +40°C ± 0.1 ppm/Mo.
Det-Tronics Veried
(CSA Exd)