TAM

Tiny Aerosol Conditioner inside Air Monitor

Gonggam Sensors’ PM monitor, TAM, chosen to measure the Antarctic atmosphere

The Gonggam Sensors’ PM monitor, TAM, was installed on the icebreaker Araon of the Korea Polar Research Institute, which departed for Antarctica on October 30, 2022 and entered the port on April 27, 2023. Antarctic air quality monitoring were successfully performed using TAMs. The left picture shows the Araon and two TAMs installed on it. The right figure shows the concentration of PM2.5 measured by the TAMs on the route of the Araon sailing to the Antartica.

As a result of the two TAMs that overcame the cold and wet blizzard in Antarctic and successfully completed the voyage for Antarctic, we confirmed a relative precision of 99.8% or more (US EPA certification requires a relative precision of 85% or more for the beta-ray monitoring method). The TAMs required no maintenance during the 6-month voyage, and performed without any data loss.

The world’s first Tiny Aerosol Conditioner Technology

Fine dust (particulate matter) is a highly hygroscopic particulate matter, making it difficult to measure accurately in real time. So all the expensive monitoring instruments have a large heater rod. However, this structure not only causes a lot of energy consumption and high management but also requires a long time (1 hour to several days) to measure.

We allowed the flow of the measured air to flow from bottom to top as opposed to the conventional method. This structure enables direct heating, which uses up to 10 watts of electrical power and reduces the size by 10,000 times. Dried air does not cause scattering light property changes in the light scattering monitor, enabling real-time (5 seconds) accurate measurements (99.3% correlation coefficient with a BAM1020 monitor in winter).

Peer-reviewed International journal

The state-of-the-art techniques used in the system have been published in a renowned international journal and have been reviewed by international experts. The journal name is MDPI Sensors, and the impact factor in 2022 is 3.847. This paper is an open-access paper that can be downloaded for free. You can download it from the following URL.

https://doi.org/10.3390/s22051950

Tiny Aerosol Conditioner inside Air Monitor

TAM (Tiny aerosol conditioner inside Air Monitor) is a fine particulate matter monitor. This device uses a light scattering method, but TAM has a built-in tiny aerosol conditioner, The system has a built-in micro-aerosol conditioner, so there is no performance degradation problem for hygroscopic aerosols. In addition, it has high durability that requires little maintenance or cleaning. With stable electric circuit technology, it has remarkably accurate measurement capabilities that cannot be compared with other monitors. TAM is s faster, uses less energy, requires smaller footprint than a beta-ray PM monitor, and has high price competitiveness.

Anyone can easily install TAM (TAC-inside air monitor) because it is plug-and-play

Real-time PM2.5 information measured by TAM can be easily found anytime, anywhere through AirNow (airnow.kr).

TAM provides a beta-ray meter and online linear regression services that operate at the nearest national monitoring station.

TAM has secured high competitiveness in durability and accuracy by demonstrating the atmospheric environment of four monitoring stations in Korea.

TAM is the first Korean company to provide information through GGS API to IQAir, a company specializing in glow air quality monitoring. By installing TAM, people can check the average PM2.5 information per minute on AirNow, and the average PM2.5 information per hour on the AirVisual app provided by IQAir.

Administrators can easily perform an online assessment of TAM by selecting the desired duration in AirNow, which can be used as an online precision test.

You can easily download the current and historical data source as a csv file, and you can easily download the online evaluation results as a PDF file.

Measurement Specifications

Measurement Principle: Light Scattering
Primary Measurement Data: PM2.5, PM1.0
Secondary Measurement Data:PM4.0, PM10, Temperature, Humidity, Atmospheric Pressure
PM Measurement Units: μg/m³ and counts/m³
PM Measurement Range: 0 – 1000 μg/m³ and 0 – 55,000 counts/m³ (before ML correction)
Measurement Resolution: 0.1 μg/m³ and 1 count/m³
Measurement Interval: 5 seconds
Automatic Humidity Control: Built-in automatic tiny aerosol conditioner
Operating Temperature: -20°C – 70°C
Operating Relative Humidity: 0 – 100% RH
Buillt-in GPS: real-time location tracking and location-based services

Power & Physical Specifications

Power Supply: AC 100 – 240V
Power Consumption: 2.1W (typical at 25°C, 60% RH), max 4.7W
Dimensions (W × D × H, cm):
– Main Unit: 13.8 × 8 × 17
– With Enclosure: 22.0 × 16.0 × 22.6
Weight:
– Main Unit: 930g
– with band bracket & enclosure: 4.19kg
– with short stand & enclosure: 4.335kg
– with long stand & enclosure: 8.92kg
Warranty: 1 year

Serial Communication & Data Management

Serial Interface: RS232 serial communication for local data logging and diagnostics
Device Management Software:
– GG Tool (GUI) for Windows 10 or higher and macOS (14.6 or higher)
– ggserial (CLI) for Windows, macOS, and Linux
Data Logging:
– Local Logging Interval: Selectable (1, 5, 10, 30, or 60 minutes)
– At 1-minute logging, up to 28 years of storage with 1GB memory
Server Logging: 1-minute or 10-minute intervals, stored in server database
– Data access and download available at (https://airnow.kr/ggtam)
Embedded Multitask Operating System:TAM OS

Smart Connectivity

Mobile App Support: Air Alarm G (Android, iOS, and macOS)
IoT LTE-M1 Modem: supports AMT5920SK (not included)
Wi-Fi: Wi-Fi 802.11b/g/n 2.4GHz
Wi-Fi Security: WEP / WPA-PSK / WPA2-PSK
Wireless Data Transmission Interval: Selectable between 1 minute and 10 minutes
Wireless Data Integrity: Anti-tampering data transmission technology is applied

TAM can be installed outdoors in a variety of forms by using a dedicated rainproof enclosure.

The rainproof enclosure can receive GPS and WIFI signals by using anti-static polycarbonate material.

There is enough space where an LTE modem is installed inside, so the LTE modem can be installed in the rainproof enclosure if you cannot use WiFi. Once connected to the internet, you can easily access the past and last data at https://airnow.kr/.

Short stand

Installed on a desk