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Miniature Size Nitrogen Dioxide Sensor (NO2 Sensor) - NO2-D4

? Range: 20 ppm NO2 limit of performance warranty
? Sensitivity: -200 to -450 nA/ppm in 10ppm NO2
? Response time t90: < 35s from zero to 10ppm NO2
? Resolution: 0.1 RMS noise (ppm equivalent)
? Temperature range: -20 to 50°C
? Pressure range: 80 to 120 kPa
? Humidity range: 15 to 90 %rh
? Weight: < 2 g

Model Number: NO2-D4
Data Sheet:

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Product Specification

NO2-D4 Nitrogen Dioxide Sensor (NO2 Sensor) Description
Alphasense Nitrogen Dioxide gas sensors operate using proven fuel cell technology.

NO2-D4 Nitrogen Dioxide Sensor size:
miniature, with proven long-term performance. Sensors for the next generation of portable gas detectors

The NO2 range provides OEMs with reliable sensors for use in a number of high volume applications. Strong signal levels combined with low zero current allows resolution to 50 parts per billion (ppb) and an operating range to 20ppm. The sensors are suitable for use in fixed installation sensing heads, portable safety instruments, urban air monitoring and stack gas analysers.

The NO2 sensors offer our electrolyte leak-free guarantee and reliable long-term detection performance. The leakproof housing is moulded with a colour coded top for ease of identification.

NO2-D4 Nitrogen Dioxide Sensor (NO2 Sensor) Key Features & Benefits:
Small Footprint
Including the world’s smallest two-gas sensor, only 14.5mm diameter, this family of sensors allows significant savings in gas detector size.

Reduced Height
8.4mm high, making the sensor ideal for low profile instruments.

Low Weight
Less than 1.5 grams with excellent shock resistance.

Good Connectivity
Uses industry standard, low cost, Molex sockets for direct board insertion.

Reduced Costs
High quality design with a significant reduction in the cost per measured gas, allied to reduced manufacturing costs are passed on to OEMs

NO2-D4 Nitrogen Dioxide Sensor (NO2 Sensor) PERFORMANCE
Sensitivity	nA/ppm in 10ppm NO2	-200 to -450
Response time	t90 (s) from zero to 10ppm NO2	< 35
Zero current	ppm equivalent in zero air	± 0.8
Resolution	RMS noise (ppm equivalent)	0.1
Range	ppm NO2 limit of performance warranty	20
Linearity	ppm error at full scale, linear at zero and 10ppm NO2	0 to -0.6
Overgas limit	maximum ppm for stable response to gas pulse	60

NO2-D4 Nitrogen Dioxide Sensor (NO2 Sensor) LIFETIME
Zero drift	ppm equivalent change/year in lab air	nd
Sensitivity drift	% change/month in lab air, twice monthly test	nd
Operating life	months until 80% original signal (24 month warranted)	> 24

NO2-D4 Nitrogen Dioxide Sensor (NO2 Sensor) ENVIRONMENTAL
Sensitivity @ -20°C	% (output @ -20°C/output @ 20°C) @ 10ppm	75 to 95
Sensitivity @ 50°C	% (output @ 50°C/output @ 20°C) @ 10ppm	90 to 105
Zero @ -20°C	ppm equivalent change from 20°C	< ± 0.6
Zero @ 50°C	ppm equivalent change from 20°C	< ± 1.5

NO2-D4 Nitrogen Dioxide Sensor (NO2 Sensor) CROSS SENSITIVITY
H2S sensitivity	% measured gas @ 20ppm H2S	< -200
CL2 sensitivity	% measured gas @ 10ppm CL2	< 120
NO sensitivity	% measured gas @ 50ppm NO	< 0.5
SO2 sensitivity	% measured gas @ 20ppm SO2	< -3
CO sensitivity	% measured gas @ 400ppm CO	< 0.1
H2 sensitivity	% measured gas @ 400ppm H2	< 0.1
C2H4 sensitivity	% measured gas @ 400ppm C2H4	< 0.1
NH3 sensitivity	% measured gas @ 20ppm NH3	< 0.1
CO2 sensitivity	% measured gas @ 10% CO2	< 0.1
O3 sensitivity	% measured gas @ 200ppb O3	< 70

NO2-D4 Nitrogen Dioxide Sensor (NO2 Sensor) KEY SPECIFICATIONS
Temperature range	°C	-20 to 50
Pressure range	kPa	80 to 120
Humidity range	%rh (see note below)	15 to 90
Storage period	months @ 3 to 20°C (stored in sealed pot)	6
Load resistor	Ω (for optimum performance)	33
Weight	g	< 2