Compact CO2 Concentration and Barometric Pressure Sensor, Ethernet Output and PoE
The TA5640 is a compact Ethernet sensor designed for measuring CO2 concentration and atmospheric pressure.
Compared to older models, it offers a new NDIR CO2 module with high accuracy in the range up to 5000 ppm and the possibility of extended measurement up to 10,000 ppm. Thanks to the LCD display, LED signaling, and acoustic alarms, the device is suitable for immediate local air quality indication.
The device is suitable for offices, schools, and public spaces where temperature and humidity are controlled by another system, but it is necessary to monitor air quality and ventilation according to the CO2 level. The NDIR sensor used ensures high accuracy and long-term stability without the need for frequent calibration.
The TA5640 is designed for ventilation monitoring and indirect occupancy tracking.
Main Benefits:
- Precise measurement of CO2 concentration and pressure
- Local air quality signaling
- Backlit LCD display, acoustic and LED alarm signaling
- Power supply 5–24 V or PoE
- Integrated backup memory
- Modern web interface, IPv4/IPv6 support, Modbus TCP, COMET Cloud, and fully encrypted communication (HTTPS, SNMPv3, TLS)
- Integrated detachable bracket for easy installation
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codeTA5640
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Warranty3 years
Technical data
Measured value
CO2 SENSOR
ATMOSPHERIC PRESSURE SENSOR
GENERAL TECHNICAL DATA
Premium Ethernet Sensors with Display and Local Signaling
The TAx6xx series represents a new generation of Web Sensor 2.0 premium sensors. They combine precise measurement, modern network communication, and local monitoring via an LCD display, LED signaling, and an acoustic alarm.
Ideal solution for:
- server rooms and data centers
- laboratories and healthcare
- industrial facilities
- offices, schools, and public buildings
- cleanrooms
Why choose TAx6xx?
Local monitoring without a PC
- Backlit segmented LCD display (4 brightness levels)
- Display of values, alarms, and IP address
- Three-color LED signaling (green / yellow / red)
- Acoustic alarm with local and remote mute options
Advanced next-generation alarms
- 2 adjustable alarms per channel (no direction limits)
- System alarms (measurement, time, or configuration error…)
- Signaling via: o LED o acoustics o e-mail (TLS / STARTTLS) o SNMP trap o Syslog
Calculations and advanced analytics
- Dew point
- Absolute humidity
- Specific humidity
- Mixing ratio
- Enthalpy
- Humidex and Heat Index
- Inter-channel calculations (e.g., temperature difference, CO₂ difference)
Maximum connectivity and security
- HTTP / HTTPS (custom certificate upload)
- SNMP v1 / v2c / v3 (SHA, AES128)
- Modbus TCP (including alarm mute and limit changes)
- IPv4 + IPv6
- COMET Cloud / COMET Database
- TLS communication
- 4 user accounts, 3 permission levels
- Firmware updates via web
Power without compromises
- 5–24 V DC
- PoE (IEEE 802.3af)
- RTC with battery backup
- Backed-up memory (>2600 records)
Typical applications
Data centers
- Monitoring of temperature, humidity, and CO₂ with instant LED indication.
- Laboratories: High-precision Pt1000 inputs, cable compensation, alarms.
- Schools and offices: CO₂ air quality "traffic light" for ventilation control.
- Industry: Durable solution with PoE and SCADA integration.
The new platform brings:
- new compact design
- removable bracket for easy mounting
- unified firmware
- enhanced cybersecurity
- RTC with battery
- advanced alarm system
Optional accessories and download
AC/DC adapter 230Vac to 5Vdc/2.1 A, EU
AC/DC adapter 230Vac to 5Vdc/2.1 A, UK
AC/DC adapter 230Vac to 5Vdc/2.1 A, US
Accredited atmospheric pressure calibration
Accredited CO2 calibration
KIT-GSM with modem
300Mbps Wireless N Nano Router
Magnetic holder for Web Sensors PAxxxx and TAxxxx
COMET Database
COMET Cloud
COMET Cloud Lite for Android & iOS
COMET VISION - Analytical Software for Dataloggers and Multiloggers
Database Viewer for Comet Database
COMET presentation case for samples
COMET Magnetic Foldable Stand
Software
Comet Database One Click Installer (21.1-V)
Database Viewer 3.20.0.0 dbapi 21.1
Conversions - application for recalculation of values
COMET Cloud Lite - Android (Google Play)
COMET Cloud Lite - iOS (App Store)
Others
Terms and Conditions COMET System s.r.o.
Manuals
Quick Start Manual
Catalogs
CATALOG - CO2
CATALOG - WebSensor with Ethernet output
Catalogue Sheets - COMET Premium WebSensors 2.0
Related products
COMET Cloud
COMET Database
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