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SENSORS
1. AIR QUALITY SENSORS – ELECTROCHEMICAL
SENSOR
RANGE
RESOLUTION
ACCURACY*
CARBON MONOXIDE (CO)
Std Range
0 - 200 ppm
0.1 ppm
±4% rdg, ±0.5 ppm
OXYGEN (O
2
)
Std Range
0 - 25%
0.1%
0.1 % Vol rdg
NITRIC OXIDE (NO)
Std. Range
0 - 250 ppm
0.1 ppm
±4 % rdg, ±0.5 ppm
NITROGEN DIOXIDE (NO
2
)
Std. Range
0 - 20 ppm
0.1 ppm
±4 % rdg, ±0.5 ppm
SULFUR DIOXIDE (SO
2
)
Std. Range
0 - 20 ppm
0.1 ppm
±4 % rdg, ±0.5 ppm
HYDROGEN SULPHIDE (H
2
S)
Std. Range
0 - 100 ppm
1 ppm
±4 % rdg, ±0.5 ppm
FORMALDEHYDE(CH
2
O)**
Std. Range
0 - 10 000 ppb
1 ppb
±5 % rdg,
±50 ppb
2. AIR QUALITY SENSORS – NON-DISPERSIVE INFRARED (NDIR) SENSORS
SENSOR
RANGE
RESOLUTION
ACCURACY*
CARBON DIOXIDE (CO
2
)
Std Range
0 - 5000 ppm
1 ppm
2% rdg ±10 ppm
3. AIR QUALITY SENSORS – PHOTO IONIZATION DETECTOR (PID) SENSORS
SENSOR
RANGE
RESOLUTION
Min Detection
ACCURACY*
VOCs LOW
Std Range
0 - 20 000
ppb
(0 - 46 000 µg/m
3
)
1 ppb
(1 µg/m
3
)
5 ppb
10% rdg ±20 ppb
VOCs HIGH
0 - 200
ppm
(0 - 460 mg/m
3
)
1 ppm
(1 mg/m
3
)
10 ppb
10% rdg ±2 ppm
4. OTHER SENSORS
SENSOR
RANGE
RESOLUTION
ACCURACY*
Temperature Type K (T1)
0 - 2000 ºF
0 - 1100 ºC
1 ºF
1 ºC
5 °F / 3 °C or 2 % rdg
Ambient Temperature
-40 – 257 ºF
-40 – 125 ºC
0.1 ºF
0.1 ºC
±0.4 °F (32 - 140 °F)
±0.4 °C (0 - 60 °C)
Barometric Pressure
260 - 1260 mbar
1 mbar
±2 mbar
Relative Humidity
5 -95 %
0.1 %
±2% RH
Differential Pressure***
-40 to 40 inH
2
O
-100 to +100 mbar
0.1 inH
2
O
0.1 mbar
±1% rdg
Air Velocity
0 - 300 ft/s
0 - 91 m/s
1 ft/s
1 m/s
*Note: All Accuracies indicated above are under Laboratory Conditions
**
This sensor may have interference from H
2
S, H
2
, CO, and other reducing gases such as alcohols
***
Requires connection accessories, flexible tubes and connections available as option in the Si-AQ Kit Press. Diff.
