(SO2) AQ7SO2 Honeywell Sulphur Dioxide Sensor

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Product Details:

Product	Description
Brand	Honeywell
Model no.	AQ7SO2 (ADQ702-400)
Technology	4-electrode electrochemical
Measurement Range	0 ppm SO2 to 1 ppm SO2
Maximum Overload	5 ppm NO2
Onboard Filter	None
Sensitivity*	1200 nA/ppm ±300 nA/ppm
Response Time (T90)	< 60 seconds
Resolution*	2 ppb
Baseline Offset*	<±200 nA
Repeatability*	< ±5 % of signal
Linearity**	linear
Low Detection Limit*	5 ppb
Recommended Load Resistor	68 Ω
Sensor Bias Voltage	O mV
Weight	9 g
Outer Plastic Body Material	ABS
Contact Material	copper with gold coating
Operating Temperature Range	-30°C to 50°C (55°C intermittent***)
Operating Humidity Range	15 %RH to 90 %RH non-condensing
Recommended Storage Temperature	0°C to 20° in original sealed container
Typical Applications	ambient environmental monitoring
Storage Life	6 months in original sealed container
Expected Operating Life	two years in air

Above specifications mentioned are for quick reference only. Actual technical details has to be obtained from below catalog.

Description

The (SO₂) AQ7SO2 Honeywell Sensor, AQ7 Series are for environmental applications; other applications, including industrial safety, may not be suitable.

FEATURES AND BENEFITS

High resolution
Low detection limit
High correlation with control station
Individual compensation for temperature and cross sensitivity

Poisoning
Gas sensors are designed for operation in a wide range of environments and harsh conditions. However, it is important that exposure to high concentrations of solvent vapors is avoided during storage, fitting into instruments, and operation. When using sensors with printed circuit boards (PCBs), degreasing agents should be used before the sensor is fitted. Do not glue directly on or near the sensor as the solvent may cause crazing of the plastic.

Cross Sensitivity Table
Whilst AQ7 Series gas sensors are designed to be highly specific to the gas they are intended to measure, they will still respond to some degree to various other gases.