GEN 1 Domestic Carbon Monoxide Sensor
Physical
Weight
Housing Material
8 grams
ABS
Product Image
Environmental
Temperature Range
Pressure Range
Humidity Range
Operational Life
Recommended
Storage Conditions
-20°c to +52°c
1 Atmosphere -20% to +10%
Continuous: 15% to 90%
Intermittent: 0% to 99%
Greater than 10 years
+10°c to +30°c (shorted)
Electrical
Bias Voltage
Offset Voltage
Recommended
Storage Conditions
Not required
<10mV (Absolute Maximum)
<1mV (Recommended)
820R (Absolute Maximum)
Output Parameters
Output Signal
Measurement Range
Maximum Overload
Response Time
(T90)
Baseline Offset
(clean air)
Zero Shift
(-20°c to +52°c)
Linearity
Repeatability
Long Term
Output Drift
Orientation
11±4 nA/ppm
0-500 ppm
5000ppm
<50 seconds
-2ppm to +2ppm
<+5ppm
Typically ±5% or better
<±10%
<10% pa
Any
Dimensions (mm)
Gas
Carbon Monoxide
Ethanol
Ethanol
HMDS
Nitric Oxide
Hydrogen
Carbon Dioxide
Sulphur Dioxide
Concentration
/ppm
100
2000
200
10
50
100
5000
50
Exposure Time
/mins
5
20
120
40
5
10
5
5
Equivalent Reading
/ppm
100
0
0
0
0
<30
0
0
Cross Sensitivity Information
Cross sensitivity data is generated from a limited number of cells and the data above represents expected values for all cells. However a degree of variation may exist for specific sensors. All measurements taken at 25°C at a humidity of between 30% and 50%RH and at atmospheric pressure unless otherwise stated. All measurements made on cells less than 6 months after manufacture.
Signal Conditioning
The 'Gen1' is a 2-terminal amperometric electrochemical sensor, delivering a current that is proportional
to CO concentration. The bias voltage across its terminals should be kept as low as possible to maintain optimum stability and accuracy.
A transimpedance amplifier is an effective means of monitoring this current while maintaining a very low bias across the sensor. The op-amp should have low input bias currents (<5nA) and a low input offset (±1mV
maximum recommended).
