HS-28M-N01 Multifunction Air Quality Transmitter

Reference: HS-28M-N01
Brand: HenSistemas

The HS-28M-N01 is an air quality meter developed to detect PM2.5, PM10, temperature, humidity, air pressure, light, TVOC, O2, carbon dioxide (CO2), carbon monoxide (CO), formaldehyde (CH2O) and other air quality parameters. The transmitter uses imported sensors and computing chips, with high accuracy, high resolution and good stability.

It is widely used in building heating, ventilation and cooling (HVAC) systems, smart homes, schools, hospitals, stations, airports and other sites.

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HS-28M-N01

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DC power supply (standard) 10-30V DC
Maximum power consumption 0.5W (24V DC supply)
Working environment Temperature -10 ℃ to 55 ℃; humidity 0 ~ 95% RH, non-condensing
Signal output RS485 (standard Modbus-RTU protocol)
Product material ABS
Installation method Wall or ceiling mounting

Overview

The device combines several measuring elements in a single meter with a digital output signal (RS485).

General specifications

DC power supply (standard): 10-30V DC
Maximum power consumption: 0.5W (24V DC supply)
Detection parameters: temperature, humidity, PM2.5, PM10, air pressure, light, TVOC, CO2, formaldehyde, O3, CO, CH4, O2, SO2, NO2, H2, H2S, NH3
Working environment: temperature -10 ℃ to 55 ℃; humidity 0 ~ 95% RH, non-condensing
Signal output: RS485 (standard Modbus-RTU protocol)
Material: ABS
Installation: wall or ceiling mounting

Range, resolution, accuracy and preheat time by parameter

PM2.5: measuring range 0~1000ug/m3
PM10: measuring range 0~1000ug/m3; resolution 1ug/m3; accuracy ±10%; preheat time ≤2min
Temperature: measuring range -40℃~+120℃; resolution 0.1℃; accuracy ±0.5℃
Humidity: measuring range 0%RH-100%RH; resolution 0.1%RH; accuracy ±3%RH
Atmospheric pressure: measuring range 0~120kPa; resolution 0.1kPa; accuracy ±0.15kPa (at 25℃ and 75kPa)
Illumination: measuring range 0~200,000Lux; resolution 1Lux; accuracy ±7% (25℃)
TVOC: measuring range 0~60,000ppb; resolution 1ppb; accuracy ±8%FS±125ppb
Carbon dioxide (CO2): measuring range 0~5000ppm; resolution 1ppm; accuracy ±(40ppm+ 3%F·S); preheat time 2min (available), 10min (maximum accuracy)
Formaldehyde (CH2O): measuring range 0~5ppm; resolution 0.01ppm; accuracy ±5%FS; preheat time ≥5 minutes
Ozone (O3): measuring range 0~10ppm; resolution 0.01ppm; accuracy ±6%FS; preheat time ≥5 minutes
Oxygen (O2): measuring range 0~25%Vol; resolution 0.1%Vol; accuracy ±3%FS; preheat time ≥5 minutes
Hydrogen sulfide (H2S): measuring range 0~100ppm; resolution 1ppm; accuracy ±3%FS; preheat time ≥5 minutes
Methane (CH4): measuring range 0~100%LEL; resolution 1%LEL; accuracy ±5%FS; preheat time ≥5 minutes
Carbon monoxide (CO): measuring range 0~1000ppm; resolution 1ppm; accuracy ±3%FS; preheat time ≥5 minutes
Nitrogen dioxide (NO2): measuring range 0~20ppm; resolution 0.1ppm; accuracy ±3%FS; preheat time ≥5 minutes
Sulfur dioxide (SO2): measuring range 0~20ppm; resolution 0.1ppm; accuracy ±3%FS; preheat time ≥5 minutes
Hydrogen (H2): measuring range 0~1000ppm; resolution 1ppm; accuracy ±3%FS; preheat time ≥5 minutes
Ammonia (NH3): measuring range 0~100ppm; resolution 1ppm; accuracy ±2%FS; preheat time ≥5 minutes

Specifications

HS-28M-N01 Multifunction Air Quality Transmitter · HS-28M-N01
Property	Value
DC power supply (standard)	10-30V DC
Maximum power consumption	0.5W (24V DC supply)
Detection parameters	Temperature, humidity, PM2.5, PM10, air pressure, light, TVOC, CO2, formaldehyde, O3, CO, CH4, O2, SO2, NO2, H2, H2S, NH3
Working environment	Temperature -10 ℃ to 55 ℃; humidity 0 ~ 95% RH, non-condensing
Signal output	RS485 (standard Modbus-RTU protocol)
Product material	ABS
Installation method	Wall or ceiling mounting
PM2.5 — measuring range	0~1000ug/m3
PM10 — measuring range	0~1000ug/m3
PM10 — resolution	1ug/m3
PM10 — accuracy	±10%
PM10 — preheat time	≤2min
Temperature — measuring range	-40℃~+120℃
Temperature — resolution	0.1℃
Temperature — accuracy	±0.5℃
Humidity — measuring range	0%RH-100%RH
Humidity — resolution	0.1%RH
Humidity — accuracy	±3%RH
Atmospheric pressure — measuring range	0~120kPa
Atmospheric pressure — resolution	0.1kPa
Atmospheric pressure — accuracy	±0.15kPa (at 25℃ and 75kPa)
Illumination — measuring range	0~200,000Lux
Illumination — resolution	1Lux
Illumination — accuracy	±7% (25℃)
TVOC — measuring range	0~60,000ppb
TVOC — resolution	1ppb
TVOC — accuracy	±8%FS±125ppb
Carbon dioxide (CO2) — measuring range	0~5000ppm
Carbon dioxide (CO2) — resolution	1ppm
Carbon dioxide (CO2) — accuracy	±(40ppm+ 3%F·S)
Carbon dioxide (CO2) — preheat time	2min (available), 10min (maximum accuracy)
Formaldehyde (CH2O) — measuring range	0~5ppm
Formaldehyde (CH2O) — resolution	0.01ppm
Formaldehyde (CH2O) — accuracy	±5%FS
Formaldehyde (CH2O) — preheat time	≥5 minutes
Ozone (O3) — measuring range	0~10ppm
Ozone (O3) — resolution	0.01ppm
Ozone (O3) — accuracy	±6%FS
Ozone (O3) — preheat time	≥5 minutes
Oxygen (O2) — measuring range	0~25%Vol
Oxygen (O2) — resolution	0.1%Vol
Oxygen (O2) — accuracy	±3%FS
Oxygen (O2) — preheat time	≥5 minutes
Hydrogen sulfide (H2S) — measuring range	0~100ppm
Hydrogen sulfide (H2S) — resolution	1ppm
Hydrogen sulfide (H2S) — accuracy	±3%FS
Hydrogen sulfide (H2S) — preheat time	≥5 minutes
Methane (CH4) — measuring range	0~100%LEL
Methane (CH4) — resolution	1%LEL
Methane (CH4) — accuracy	±5%FS
Methane (CH4) — preheat time	≥5 minutes
Carbon monoxide (CO) — measuring range	0~1000ppm
Carbon monoxide (CO) — resolution	1ppm
Carbon monoxide (CO) — accuracy	±3%FS
Carbon monoxide (CO) — preheat time	≥5 minutes
Nitrogen dioxide (NO2) — measuring range	0~20ppm
Nitrogen dioxide (NO2) — resolution	0.1ppm
Nitrogen dioxide (NO2) — accuracy	±3%FS
Nitrogen dioxide (NO2) — preheat time	≥5 minutes
Sulfur dioxide (SO2) — measuring range	0~20ppm
Sulfur dioxide (SO2) — resolution	0.1ppm
Sulfur dioxide (SO2) — accuracy	±3%FS
Sulfur dioxide (SO2) — preheat time	≥5 minutes
Hydrogen (H2) — measuring range	0~1000ppm
Hydrogen (H2) — resolution	1ppm
Hydrogen (H2) — accuracy	±3%FS
Hydrogen (H2) — preheat time	≥5 minutes
Ammonia (NH3) — measuring range	0~100ppm
Ammonia (NH3) — resolution	1ppm
Ammonia (NH3) — accuracy	±2%FS
Ammonia (NH3) — preheat time	≥5 minutes