Senseca PMsense Particulate Matter Transmitter

Senseca PMsense

Senseca PMsense Particulate Matter Transmitter

Senseca PMsense

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Date published 17.09.2026

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Description Specifications Documents Accessories Video

The Senseca PMsense is a particulate matter transmitter for measuring PM1.0, PM2.5, and PM10 concentrations, designed for outdoor air quality monitoring. The device can operate as a stand-alone instrument or be integrated into automatic weather stations and remote environmental monitoring systems.

Particulate matter concentration is measured using the laser scattering principle, providing fast and sensitive detection of airborne particles.

PMsense is equipped with an RS485 digital interface with MODBUS-RTU protocol, allowing straightforward integration into automation, data acquisition, and environmental monitoring systems. The transmitter is designed for maintenance-free operation and provides fast response, high sensitivity, and excellent stability.

The PM sensor can operate in two modes. In continuous operating mode, the sensor remains permanently active and measurements are taken continuously; in this mode, the manufacturer guarantees at least 10,000 hours of PM sensor lifetime. In discontinuous operating mode, which is the default setting, the sensor is activated at regular intervals only when measurements are required. This mode extends the service life of the PM sensor.

An optional CO₂ sensor can be integrated into the transmitter on request, allowing additional air quality monitoring.

The PMsense can also be supplied with up to two optional configurable analog outputs, selectable as 4–20 mA, 0–5 V, or 0–10 V.

Thanks to its digital and analog communication options, the Senseca PMsense is suitable for outdoor air quality monitoring, automatic weather stations, environmental monitoring networks, and remote particulate matter monitoring systems.

For more information:
PMsense – Particulate Matter Transmitter

Technical Specifications – Senseca PMsense

Particulate Matter (PM)

Parameter	Value
Measuring Principle	Laser scattering
Measured Fractions	PM1.0, PM2.5 and PM10
Measuring Range	0–1000 µg/m³ for each fraction
Particle Size Detection Range	Ø 0.3–10 µm
Linearity Error	<5%
Repeatability	<3%
Sensor Warm-Up Time	15 s
Sensor Lifetime – Cyclic Operating Mode	Approx. 5 years with 5-minute cyclic operation (default)
Sensor Lifetime – Continuous Operating Mode	>10,000 hours with continuous operation at 1 measurement/s
Temperature Drift	<0.01 µg/m³/°C

CO₂ – PMBsense… Models Only

Parameter	Value
Measuring Principle	Dual-wavelength NDIR
Measuring Range	0–5000 ppm
Accuracy	±(50 ppm + 3% of measured value) at 25 °C and 1013 hPa
Response Time	<120 s at an air velocity of 2 m/s
Long-Term Stability	5% of measured value / 5 years
Temperature Drift	1 ppm/°C

Outputs and Communication

Parameter	Value
Digital Interface	RS485 with MODBUS-RTU or proprietary ASCII protocol
PMsense-M / PMBsense-M	RS485 MODBUS-RTU
PMsense-A / PMBsense-A	RS485 MODBUS-RTU + 2 analog outputs 4–20 mA
PMsense-V / PMBsense-V	RS485 MODBUS-RTU + 2 analog outputs 0–10 V
Analog Current Outputs – Version A	2 × 0/4–20 mA
Maximum Load Resistance for Current Output	500 Ω
Analog Voltage Outputs – Version V	2 × 0–10 V
Minimum Input Resistance for Voltage Output	10 kΩ

Power Supply and Consumption

Parameter	Value
Power Supply	7–30 V DC
Power Supply for 0–10 V Analog Outputs	15–30 V DC
Current Consumption During Measurement	25 mA at 24 V DC
Current Consumption in Standby Mode	4 mA, cyclic operating mode only
Consumption Note	The specified consumption does not include the current drawn by the analog outputs

Construction and Operating Conditions

Parameter	Value
Electrical Connection	M12 8-pole circular connector
Operating Temperature	-20 to +70 °C
Operating Relative Humidity	0–95 %RH
Operating Atmospheric Pressure	500–1500 hPa
Housing Material	Polycarbonate
Air Inlet Protection	Rain-proof and UV-resistant inlet air filter
Protection Rating	IP53
Weight	330 g

Ordering Code

Code / Option	Description
PMsense	Base model for particulate matter measurement
Blank	PM measurement only
B	PM + CO₂
M	RS485 MODBUS-RTU
A	RS485 MODBUS-RTU + 2 analog outputs 4–20 mA
V	RS485 MODBUS-RTU + 2 analog outputs 0–10 V
/C	With Calibration Report

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