4.2 Sensor Set Up ..................4 4.3 Adding and setting sensor on APP ............ 6 5. View Online Data ..................7 6. History data on ecowitt.net ..............13 7. Sensor Placement & Mounting ..............15 8. Features ....................17 9. Specification .................... 18 10.Carbon Dioxide Levels and potential health problems are indicated...
1. Ecowitt Ecosystem Welcome to our product! To send data to the ecowitt cloud server and enable users to access it via our mobile app, our product requires the setup of a gateway and a router.
Power cord supply ✔ ✔ ✔ ✔ Battery backup ✔ ✔ ✔ ✔ Sensor ID Name 4 CH PM2.5 AQIN Note: If you have a WH41/WH43/WH45/WH46 PM2.5 sensor, the reading of PM2.5 may be different due to different sensor type used.
3. Before Configuration Prepare an console that has been added to Ecowitt APP, ensuring the frequency matches. The compatible models are listed in the table below. GW1XXX GW2000 WS3800 WS39XX WN19XX WN182X WN1920 WN1980 HP3500 HP25XX...
4. Getting Started 4.1 Parts List One NDIR CO₂ and PM2.5 haze sensor One USB Cable One User Manual 4.2 Sensor Set Up 1.Remove the battery door on the base of the air quality sensor as shown in Figure 1. Figure 1...
Page 7
Description Description LED Indicator Battery Compartment (RF transmission) Cover AC Adapter USB Battery Compartment Power Port 2.Insert two AA batteries and close the battery door. Note: The batteries (not included) are mainly for backup purpose. 2. Connect the USB cable between the sensor and an AC adapter(not included).
5. View Online Data When paired with HP2550/HP2560 Console: Figure 1 Dashboard The CO₂ , PM1.0, PM2.5, PM4.0, PM10 data automatically scrolls displaying on the screen every 5 seconds.
Page 11
The T&H, CO₂ , PM1.0, PM2.5, PM4.0, PM10 data on Figure 2 Page Sensor Name&Data When paired with WS3800/WS3900 Console:...
Page 12
Press button “+” to switch DATE, CO₂, PM1.0, PM2.5, PM10 and AQI data when default mode. Note: PM4.0,T&H reading on ecowitt APP or web page, but not display on console When paired with WN1820: Press button “+” to switch date, CO₂, CO₂24hAVG, CO₂1hMAX, CO₂24hMAX and CO₂MAX.
Page 13
When uploaded to Ecowitt APP: Edit panel and title by “…” . Tap “ ” to get graph of history data. ...
Page 14
When uploaded to Ecowitt Weather Server: View current sensor data & history records & graph on the website. Set and receive email alerts from the server when alarm condition set under your account. Remote monitoring with smart phone, laptop, or ...
6. History data on ecowitt.net Export history data: ecowitt.net - click "Export" button on the dashboard.
Page 16
You can set the time period and data frequency for the data here. The data will be exported in .csv format. Clear history data: Under "menu" → "devices" → “…” button to reset history data.
7. Sensor Placement & Mounting Place the sensor on a horizontally surface. Note that the vents must be clear of any obstructions, and we recommend placement away from other electronic devices to prevent interference. Do not place on a metal table to prevent RF signal loss.
Page 18
If you have metal siding, align the remote and console through a window to get a clear line of sight. Finally, please reset your sensor data on ecowitt.net and start using it. Note: This device is mainly used to detect the particle concentration in air.
8. Features CO₂ and PM2.5 haze sensor CO₂ photoacoustic NDIR sensors are usually more mechanically and thermally robust. Measures indoor PM1.0, PM2.5, PM4.0, PM10, CO₂ concentration, Temperature and Humidity every 60 seconds when powered with USB or detecting every 10 minutes when powered with batteries only.
9. Specification Model WH46 Name CO₂ and PM2.5 haze sensor Types of CO₂ sensors NDIR Dimensions: 106×68×67(mm) Material of Plastic Casing Mass concentration range 0 ug/m³ to 1000 ug/m³ Mass concentration precision ±【5ug/m³+5%】(0 ug/m³ to 100 for PM1 & PM2.5 ug/m³), ±10 % (100 ug/m³...
Page 21
Temperature Metering 0.1°C ( 0.1°F) Resolution Humidity Metering Range 1%RH to 99%RH Humidity Metering Accuracy ± 6%RH when 15°C to 35°C (59°F to 95°F) ± 9%RH when -10°C to 60°C (14°F to 140°F) Humidity Metering 1%RH Resolution Humidity Accuracy drift per <...
10.Carbon Dioxide Levels potential health problems are indicated below: 250-350 ppm: background (normal) outdoor air level. 350-1,000 ppm: typical level found in occupied spaces with good air exchange. 1,000-2,000 ppm: level associated with complaints of drowsiness and poor air. 2,000-5,000 ppm: level associated with headaches, ...
Page 23
Air Quality Index (AQI) for the PM2.5 Concentration (24hr) PM2.5 Air Pollution Concentration Level ug/m3 0 - 50 Good 0.0-12.0 51 -100 Moderate 12.1-35.4 101-150 Poor 35.5-55.4 151-200 Unhealthy 55.5-150.4 201-300 Severe 150.5-250.4 300+ Hazardous 250.5+...
Page 24
Hazardous 425+ Note: The WH46 sensor data can be only viewed on the Live Data interface since it doesn’t support uploads to weather underground. If you choose to upload the data to our weather server: https://www.ecowitt.net, you can view the live data/history graph and download the records on the website.
11. What types of NDIR sensors exist and how do they work? An introduction to the principles behind transmissive and photoacoustic NDIR sensing Characteristics of NDIR Sensors: NDIR sensing has become the prevalent technique for measuring CO₂ concentration. The technology exploits the characteristic property of CO₂...
Page 26
Transmissive NDIR: These NDIR sensors typically feature an IR emitter and an optical detector, such as a photodiode, at opposite ends of a specially designed optical cavity. The optical detector measures the amount of IR light energy that is not absorbed by (i.e., transmitted through) the gas sample.
Page 27
(HITRAN2016 molecular spectroscopic database) Note that this reference value heavily depends on precise positioning of IR emitter and photodetector, as well as the emission properties of the IR source and the optical cavity. Mechanical and thermal stresses acting on the measurement chamber can thus significantly falsify CO₂...
Page 28
Furthermore, transmissive NDIR sensors generally require a minimal optical path length in the centimeter scale for enough IR absorption to occur to accurately measure lower CO₂ concentrations.
Page 29
Photoacoustic NDIR: contrast transmissive NDIR sensors, photoacoustic NDIR sensors detect the amount of energy that is absorbed by CO ₂ molecules. When pulsing the infra-red emitter, CO ₂ molecules absorb infra-red light periodically. This causes additional molecular vibration resulting in a pressure wave inside the measurement chamber.
12. CARE +MAINTENANCE When batteries of different brand or type are used together, or new and old batteries are used together, some batteries may be over-discharged due to a difference of voltage or capacity. This can result in venting, leakage, and rupture and may cause personal injury.
Page 31
• Do not mix Alkaline, Lithium, standard, or rechargeable batteries. • Always purchase the correct size and grade of battery most suitable for the intended use. • Always replace the whole set of batteries at one time, taking care not to mix old and new ones, or batteries of different types.
Page 32
• For recycling and disposal of batteries, and to protect the environment, please check the internet or your local phone directory for local recycling centers and/or follow local government regulations. Manufacture: ShenZhenShi OuSaiTeDianZi YouXianGongSi Address: Shajingjiedao, Xihuanlu, Minzhujiujiugongyecheng AQu, C Dong 4 Ceng A, Shenzhen Baoanqu Guangdong 518101 CN...
13. Warranty Information We disclaim any responsibility for any technical error or printing error, or the consequences thereof. All trademarks and patents are recognized. We provide a 1-year limited warranty on this product against manufacturing defects, or defects in materials and workmanship.
14. Sensor Calibration Auto Calibration Operation: If you find that the readings of the carbon dioxide sensor are inaccurate after a period of use, please place the device in a well- ventilated location for at least one day. Make sure there are no other sources of pollution around, and ensure that the sensor surface is not obstructed or affected by external interference.
Page 35
If the deviation is large, it’s recommended to place the sensor in an outdoor ventilated place for 30 minutes before calibrating. Open ecowitt APP → “ … ” → ”Calibration” → “AQIN Calibration” → setting and save...
15. After-sales Service Order Issues: If you encounter any missing or incorrect shipments of Ecowitt products purchased, please reach out to the respective platform's customer service from the store you bought product for assistance. Usage Inquiries: For any issues related to product usage, feel free to con tact our customer support team at support@ecowitt.co...
16.Stay in Touch Ask questions, watch setup videos, and provide feedback on our social media outlets. Follow Ecowitt on Discord, YouTube, Facebook and Twitter. Designed by Ecowitt, Made in China, Printed in China...
Need help?
Do you have a question about the WH46 and is the answer not in the manual?
Questions and answers