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Senseca

PMSense Particulate Matter Transmitter

Particulate matter transmitter for outdoor air quality monitoring.

Measures PM1.0, PM2.5 and PM10 from 0…1000 µg/m³ by laser scattering
RS485 Modbus-RTU output, with optional 2 x 0/4…20 mA or 0…10 V analog outputs
Optional CO₂ sensor (PMBsense), IP 53 housing with rain-proof, UV-resistant inlet filter

Quantity

Overview

The Senseca PMsense is a particulate matter transmitter for outdoor air quality monitoring, measuring concentrations of PM1.0, PM2.5 and PM10. Using laser scattering technology, it provides precise, real-time data on dust particle concentrations, for applications such as smart cities, municipalities, road controls and environmental studies. An optional CO₂ sensor turns it into the PMBsense model, for monitoring several air quality parameters at once. The transmitter has a digital RS485 output with Modbus-RTU or ASCII proprietary protocol, with a version adding two configurable 0/4…20 mA (or 0…10 V) analog outputs. The measuring circuit can run continuously or at user-configurable cyclic intervals, the default, to extend the sensor's lifetime.

Typical applications

Outdoor air quality monitoring
Smart cities
Municipalities
Road controls
Environmental studies
Urban pollution monitoring
Industrial and commercial environments

Key Features

Laser scattering measurement of PM1.0, PM2.5 and PM10
Measuring range 0…1000 µg/m³ for each pollutant, particle size detection Ø 0.3…10 µm
RS485 output with Modbus-RTU or ASCII proprietary protocol
Optional 2 independently configurable 0/4…20 mA or 0…10 V analog outputs
Optional CO₂ sensor, double wavelength NDIR, 0…5000 ppm (PMBsense)
Continuous or user-configurable cyclic measuring mode
M12 8-pole circular connector
Polycarbonate housing with rain-proof, UV-resistant inlet air filter, IP 53

Benefits

Detecting changes in air quality directly: fast detection of PM1.0, PM2.5 and PM10
Flexibility: output at choice, RS485 digital or analog, according to your needs
Fast and reliable: continuous air measurement and alarming
Longer sensor life: measurement data rate configurable to increase the lifetime of the sensor
Maintenance-free by design: rapid response, high sensitivity, excellent stability and long operating life
Enhanced functionality: optional CO₂ sensor for monitoring multiple air quality parameters

Specifications

PARTICULATE MATTER
Measuring principle	Laser scattering
Measured pollutants	PM1.0, PM2.5 and PM10
Measuring range	0…1000 µg/m³ (for each pollutant)
Particle size detection range	Ø 0.3…10 µm
Linearity error	< 5%
Repeatability	< 3%
Sensor warm up time	15 s
Sensor lifetime	5 years approx. in 5 minutes cyclic operating mode (default) > 10,000 hours in continuous operating mode (1 meas./s)
Temperature drift	< 0.01 µg/m³/°C

CO₂ (ONLY PMBSENSE…)
Measuring principle	Double wavelength NDIR
Measuring range	0…5000 ppm
Accuracy	±(50 ppm + 3% of measurement) @ 25 °C and 1013 hPa
Response time	< 120 s (air speed = 2 m/s)
Long-term stability	5% of measurement / 5 years
Temperature drift	1 ppm/°C

GENERAL SPECIFICATIONS
Output	RS485 with Modbus-RTU or ASCII proprietary protocol Only PM[B]sense-A: 2 x analog 0/4…20 mA (RLmax = 500 Ω) Only PM[B]sense-V: 2 x analog 0…10 V (RLmin = 10 kΩ)
Power supply	7…30 Vdc (15…30 Vdc for 0…10 V analog outputs)
Power consumption	25 mA @ 24 Vdc during measurement 4 mA in stand-by (only for cyclic operating mode) The indicated consumption does not include the consumption due to the analog outputs
Connection	M12 8-pole circular connector
Operating conditions	-20…+70 °C 0…95 %RH 500…1500 hPa
Housing material	Polycarbonate
Protection degree	Housing equipped with a rain-proof and UV resistant inlet air filter – IP 53
Weight	330 g
Mounting	Fixing bracket with U-bolt

ORDERING CODES	PM [Measurement] sense- [Output] [/C]
Measurement	Blank = only PM B = PM + CO₂
Output	M = RS485 MODBUS-RTU A = RS485 MODBUS-RTU + 2 analog outputs 4…20 mA V = RS485 MODBUS-RTU + 2 analog outputs 0…10 V
Calibration report	/C = with Calibration Report