Grove SEN55 All-in-one environmental sensor

Reference: SEEED 101021014

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Grove-all in one environmental sensor SEN54 is an integrated, superior Grove IIC ambient sensor, assembling PM, NOx, VOC, RH, Temperature sensing functionality, delivering up to 8 types of environmental data signal, sensing in high accuracy and operating for long terms, born for HVAC(Heating, Ventilation and Air Conditioning) and air quality long years detecting applications. Powered by Sensirion, it represents fine sensing performance, and there will be only one Grove cable needed between the sensor and the single board, such as Wio terminal, Seeeduino, Arduino expansion board, Raspberry Pi expansion board, and XIAO expansion board, as simplifying the edge in the wild.

The sensor is equipped with sensing components that can change the magnitude of the current corresponding to a specific gas to measure VOC(Volatile Organic Compounds) and NOx(Nitric oxide), where applies the same principle to sense Temp(Temperature), RH(Relative Humidity). There is a laser generator and a filter on the sensor as it utilizes the laser scattering method to calculate the particle size of the gas passing the sensor for precise PM1.0, PM2.5, PM4, and PM10 detection. It will continuously output 8 signals above and the sampling interval will be just 1 second. Based on the complex mathematical algorithm and model, the sensor has been designed to output calibrated digital signals to ensure superior sensing accuracy. Meanwhile, the sensing components on it possess high robustness which makes it cable of operating 24/7 for up to 10 years. There are three operating modes available for the user, which is helpful for edge deploying. It costs only 6.8 mA under RHT/Gas-Only Measurement Mode and 2.6 mA for Idle Mode while the full function of Measurement mode can be programmed to set on or off through the IIC function. Imagine you are in a poor air quality environment without knowing it, or you want a device that can detect harmful gases in real-time, that this device can be easily deployed and used, for a way long time applying. Then this Grove-all in one environmental sensor will be the amazed Grove for you.

Features

Comprehensive detection: Support NOx, PM, VOC, RH, Temp all 5 ambient data signal continuously sensing
One driver for 8 data signals: Deliver 4 types of PM and 4 primary ambient signals through the IIC function
One wire for all data output: Represent Grove family simplified connection for only one Grove cable required between the sensor and the processor
Superior sensing accuracy: Calibrate full digital signals to output powered by Sensirion
Superior operating lifetime: Maintain fine performance for up to 10 years
Selectable modes for deploying with the edge: Provide Idle, RHT/Gas-Only, Measurement Mode for various low-cost applied edge

Application

Heating Ventilation and Air Conditioning
Air Quality Detection
Respiratory Healthcare
Harmful Gas Alarm
Particulate Matter Alert
Fire Alarm
Chemical Experiment
Smart Farm

Specification

Sensor Module Specifications

Parameter	Conditions	Value	Units
Sampling interval	-	1±0.03	s
Lifetime	24 h/day operation	> 10	years
Acoustic emission level	0.2m	24	dB(A)
Long term acoustic emission level drift	0.2m	+0.5	dB(A) / year

Particulate Matter Specifications

Parameter	Conditions	Value	Units
Mass concentration specified range	0 to 1'000	μg/m3
Mass concentration size range	PM1.0	0.3 to 1.0	μg
PM2.5	0.3 to 2.5	μg
PM4	0.3 to 4.0	μg
PM10	0.3 to 10.0	μg

Temperature and Humidity Specifications

Parameter	Conditions	Value	Units
Compensated outputs	-	Temperature and Relative Humidity	°C %RH
Typical accuracy temperature	@ 15-30 °C, 50 %RH	± 0.45	°C
Max. accuracy temperature	@ 15-30 °C, 50 %RH	± 0.7	°C
Repeatability temperature	@ 25 °C, 50 %RH, τ 63%	< 60	s

Gas Specifications

Parameter	Comments	Values	Units
Min	Typ	Max
Output signals	VOC Index	1	-	500	VOC Index points
NOx Index	1	-	500	NOx Index points
Device-to-device variation	VOC Index	<±15	VOC Index points
NOx Index	<±25	NOx Index points
Repeatability	VOC Index	<±5	VOC Index points
NOx Index	<±10	NOx Index points