Tongdy EM21 Series IAQ Sensor PM2.5 CO2 TVOC HCHO Monitor

Tongdy
Indoor Air Quality Sensor
High-accuracy Multi-sensor IAQ Detector
EM21 – Commercial Grade for Intelligents & Green Buildings
(Model No.: EM21-XXXX)

Descriptions

Model: EM21 Series

• Flexible measurement and communication options, covering almost all indoor space needs
• Commercial grade with In-wall or on-wall mounting
• PM2.5/PM10/TVOC/CO2/Temp./Humi
• CO/HCHO/Light/Noise is optional
• Built in environment compensation algorithm
• Data logger with BlueTooth downlaod
• RS485/Wi-Fi/RJ45/LoraWAN is optional
• Compliant with WELL V2 and LEED V4

Features

• Simple and Elegant
  • LED Tri-colored lights Visible air quality level
  • Compact & simple design
  • Upload real-time data to cloud service, and display history chart via a software platform
• Unique Display Design
  • Show the detailed air quality on the screen
  • Display the real time values and 24-hour average of PM2.5, PM10,TVOC, CO2
  • Optional HCHO, CO, Noise, Light
  • Turn off or turn on screen by touch button
• Sleepless eye on your air quality
  • View real-time and historical data through RS485 or cloud-based platform such as “MyTongdy” , in computer or mobile APP
  • Check out or download data to analyze your indoor air quality and identify the pollution source as frequently as you need
  • Handle your indoor air quality by control the fresh air system or purification equipment automatically

Applications

• Online real-time detecting indoor air quality
• Green Building Assessment
• BAS and HVAC systems
• Smart Home System
• Fresh Air Controlling System
• Building Energy Saving Reconstruction and Assessment System
• Classroom, office, exhibition hall, shopping mall, any public places

Specification:

• General
  • Detection Parameters (max.):
    • PM2.5 ; PM10, CO2 ; TVOC ; Temp&RH ;
    • Ambient light
    • One of HCHO,CO, ambient noise
  • Data logger (option): Data logger up to 145860 points, the storage rate from 60 sec. to 10 days. For example save 5 sensing data it can be stored 78 days/5min. rate or 156 days /10min or 468 days/30min. Download data by a BlueTooth APP which is also used for configuration.
  • Communication:
    • A. RS485 (Modbus RTU)
    • B. WIFI @2.4 GHz, 802.11b/g/n
    • C. RJ45 (Ethernet TCP)
    • D. LoraWAN (Support regins: RU864, IN865, EU868, US915, AU915, KR920, AS923-1~4)
  • Operating Environment:
    • Temperature：0~60℃
    • Humidity︰0~99%RH
  • Storage Conditions: 0℃~50℃, 0~70%RH
  • Power Supply:
    • 24VAC/VDC±10% (air switch current ≦8.3A)
    • 100~240VAC
    • PoE for RJ45 interface
  • Shell material and IP class: PC fireproof material IP30
  • Overall Dimension: 91.00mm*111.00mm*51.00mm
  • Power consumption: Average  1.9w (24V) 4.5w( 230V)
  • Installation(embedded): Standard 86/50 pipe box (installation hole distance 60mm) American standard pipe box (installation hole distance 84mm)
• Carbon Dioxide CO2
  • Sensor: Non-Dispersive Infrared Detector (NDIR)
  • Measuring Range: 400～5000ppm
  • Output Resolution: 1ppm
  • Accuracy: ±50ppm + 3% of reading or 75ppm
• Temperature and Humidity
  • Sensor: High precision digital integrated temperature and humidity sensor
  • Measuring Range: Temp: 0℃~60℃ Humidity:0~99%RH
  • Output Resolution: Temp:0.01℃ Humidity:0.01%RH
  • Accuracy: Temp:±0.6℃ Humidity:±4.5%RH
• Dust PM2.5/PM10
  • Sensor: Laser particle sensor, Light scattering method
  • Measuring Range: PM2.5: 0~4.0mg/㎥, PM10: 0~1000μg/㎥
  • Output Resolution: 1μg∕㎥
  • Accuracy: ±5μg∕㎥+15% (@1~100ug/㎥)
• Total Volatile Organic Compounds TVOC
  • Sensor: Metal oxide semiconductor
  • Measuring Range: 0.001~4.0mg/㎥
  • Output Resolution: 0.001mg∕㎥
  • Accuracy: <15%
• Formaldehyde HCHO
  • Sensor: Electrochemistry Formaldehyde sensor
  • Measuring Range: 0.001~1.25mg/㎥ (1ppb~1000ppb@20℃)
  • Output Resolution: 0.001mg∕㎥ (1ppb@20℃)
  • Accuracy: ±0.003mg+10% of reading (0~0.5mg/㎥) ; ±20ppb (0~100ppb)
• Carbon Monoxide CO
  • Sensor: Electrochemistry carbon monoxide sensor
  • Measuring Range: 0.1～100ppm
  • Output Resolution: 0.1ppm
  • Accuracy: ±1ppm (0~10ppm)
• Ambient Noise
  • Frequency: 100~10KHz
  • Sensitivity: -36±3 dBFS
  • Acoustic Overload point: 130 dBSPL
  • Signal to Noise Ratio: 50 dB(A)
  • Noise Floor: -92 dBFS
• Ambient Light
  • Measuring Range: 0.96~64000 lx
  • Measurement Accuracy: ±20%
  • Incandescent/fluorescent sensor out ration: 1
  • Dark (0 lx) sensor out: 0 + 3 count

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