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Sensor for Up to Two Digital Temperature and Humidity or CO2 Probes, Ethernet Output and PoE

The TA3621 is a universal Ethernet sensor allowing the connection of up to two digital probes in any combination.

Two probes for temperature and humidity, a combination of T+RH and CO2, or even two NDIR CO2 probes can be used. This flexibility makes the TA3621 a unique solution for monitoring multiple locations or variables with a single device.

The device is equipped with a backlit LCD display, a complete set of alarm functions, and support for modern platform communication protocols. The device allows monitoring of two zones simultaneously or combining CO2 and humidity measurements in one room. Inter-channel calculations allow for evaluation of temperature differences between probes. Values are displayed on the screen and transmitted over a secure network with PoE support.

The TA3621 is suitable for precise environmental monitoring in buildings and industry.

Main Benefits:

  • Support for connecting up to two T+RH or CO2 digital probes
  • Flexible use of one device for different applications
  • 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

  • code
    TA3621
  • Warranty
    3 years
  • On request

Technical data

Measured value

Temperature
Relative humidity
Counted values (dew point…)
CO2

TEMPERATURE SENSOR

Measuring range Depending on the connected DSxx probe
Accuracy Depending on the connected DSxx probe
Resolution 0.1 °C

HUMIDITY SENSOR

Measuring range Depending on the connected DSxx probe
Accuracy Depending on the connected DSxx probe
Resolution 0,1% RV

DEW POINT

Measuring range Depending on the connected DSxx probe
Accuracy Depending on the connected DSxx probe
Resolution 0.1 °C

CO2 SENSOR

Measuring range 0 to 10,000 ppm
Accuracy ±(100 ppm + 5% of reading) at 23 °C and 1,013 hPa
Resolution 1 ppm
CO2 probe cable length 1, 2 or 4 meters

GENERAL TECHNICAL DATA

Operating temperature range -30 to +60 °C
Measurement channels 2× digital T+RH probe (cable-mounted) or CO₂ probe, ELKA connector
Calculated values dew point temperature, absolute humidity, specific humidity, mixing ratio, specific enthalpy, humidex, heat index
Supported temperature units degrees Celsius (°C), degrees Fahrenheit (°F)
Temperature compensation of the humidity sensor across the entire temperature range
Power supply Power over Ethernet (IEEE 802.3af) or 5–24 V DC
Network interface Ethernet
IP support IPv4, IPv6
Communication protocols HTTP(s), Web server (WWW), HTTP GET (JSON, XML), Modbus TCP, SNMPv1, SNMPv2c, SNMPv3
Alarm protocols Email (SMTP), Syslog
Measurement interval 2 s
Ingress protection (IP rating) IP30 (electronics)
Dimensions 116 × 85 × 42 mm (without connected probe)
Weight 220 g
Warranty 3 years

Optional accessories and download

Ultra thin digital temperature/humidity probe

Ultra thin digital temperature/humidity probe

Temperature range: -10 to 60°C
code DIGIH/E-1
Price On request
In stock 4 pcs
Ultra thin digital temperature/humidity probe, cable 2 m

Ultra thin digital temperature/humidity probe, cable 2 m

Temperature range: -10 to 60°C
code DIGIH/E-2
Price On request
In stock on request
Ultra thin digital temperature/humidity probe, cable 5 m

Ultra thin digital temperature/humidity probe, cable 5 m

Temperature range: -10 to 60°C
code DIGIH/E-5
Price On request
In stock 4 pcs
Digital temperature/humidity probe DIGIL/E, ELKA connector

Digital temperature/humidity probe DIGIL/E, ELKA connector

Temperature range: -20 to 80°C
code DIGIL/E
Price On request
In stock 43 pcs
Digital temperature/humidity probe DIGIL/E-1, ELKA connector, cable 1 meter

Digital temperature/humidity probe DIGIL/E-1, ELKA connector, cable 1 meter

Temperature range: -30 to 105°C
code DIGIL/E-1
Price On request
In stock 8 pcs
Digital temperature/humidity probe DIGIL/E-10, ELKA connector, cable 10 meters

Digital temperature/humidity probe DIGIL/E-10, ELKA connector, cable 10 meters

Temperature range: -30 to 105°C
code DIGIL/E-10
Price On request
In stock 1 pcs
Digital temperature/humidity probe DIGIL/E-15, ELKA connector, cable 15 meters

Digital temperature/humidity probe DIGIL/E-15, ELKA connector, cable 15 meters

Temperature range: -30 to 105°C
code DIGIL/E-15
Price On request
In stock 1 pcs
Digital temperature/humidity probe DIGIL/E-2, ELKA connector, cable 2 meters

Digital temperature/humidity probe DIGIL/E-2, ELKA connector, cable 2 meters

Temperature range: -30 to 105°C
code DIGIL/E-2
Price On request
In stock 17 pcs
Digital temperature/humidity probe DIGIL/E-5, ELKA connector, cable 5 meters

Digital temperature/humidity probe DIGIL/E-5, ELKA connector, cable 5 meters

Temperature range: -30 to 105°C
code DIGIL/E-5
Price On request
In stock 17 pcs
Digital temperature/humidity probe DIGIS/E, ELKA connector

Digital temperature/humidity probe DIGIS/E, ELKA connector

Temperature range: -20 to 80°C
code DIGIS/E
Price On request
In stock 95 pcs
Digital temperature/humidity probe DIGIS/E-1, ELKA connector, cable 1 meter

Digital temperature/humidity probe DIGIS/E-1, ELKA connector, cable 1 meter

Temperature range: -10 to 60°C
code DIGIS/E-1
Price On request
In stock 7 pcs
Digital temperature/humidity probe DIGIS/E-10, ELKA connector, cable 10 meters

Digital temperature/humidity probe DIGIS/E-10, ELKA connector, cable 10 meters

Temperature range: -10 to 60°C
code DIGIS/E-10
Price On request
In stock 2 pcs
Digital temperature/humidity probe DIGIS/E-15, ELKA connector, cable 15 meters

Digital temperature/humidity probe DIGIS/E-15, ELKA connector, cable 15 meters

Temperature range: -10 to 60°C
code DIGIS/E-15
Price On request
In stock on request
Digital temperature/humidity probe DIGIS/E-2, ELKA connector, cable 2 meters

Digital temperature/humidity probe DIGIS/E-2, ELKA connector, cable 2 meters

Temperature range: -10 to 60°C
code DIGIS/E-2
Price On request
In stock 4 pcs
Digital temperature/humidity probe DIGIS/E-5, ELKA connector, cable 5 meters

Digital temperature/humidity probe DIGIS/E-5, ELKA connector, cable 5 meters

Temperature range: -10 to 60°C
code DIGIS/E-5
Price On request
In stock 2 pcs

CO2 external probe, range 0-10.000ppm, M12 connector, without cable

CO2 external probe, range 0-10.000ppm, M12 connector, without cable

code SN274
Price On request
In stock 26 pcs
Extension cable for CO2 probe, M12/M8 circular connector, cable 1 meter

Extension cable for CO2 probe, M12/M8 circular connector, cable 1 meter

code UWP001
Price On request
In stock on request
Extension cable for CO2 probe, M12/M8 connector, cable 2 meters

Extension cable for CO2 probe, M12/M8 connector, cable 2 meters

code UWP001-2
Price On request
In stock on request
Extension cable for CO2 probe, M12/M8 connector, cable 4 meters

Extension cable for CO2 probe, M12/M8 connector, cable 4 meters

code UWP001-4
Price On request
In stock 1 pcs

AC/DC adapter 230Vac to 5Vdc/2.1 A, EU

AC/DC adapter 230Vac to 5Vdc/2.1 A, EU

code A1879eu
Price On request
In stock 8 pcs
AC/DC adapter 230Vac to 5Vdc/2.1 A, UK

AC/DC adapter 230Vac to 5Vdc/2.1 A, UK

code A1879uk
Price On request
In stock on request
AC/DC adapter 230Vac to 5Vdc/2.1 A, US

AC/DC adapter 230Vac to 5Vdc/2.1 A, US

code A1879us
Price On request
In stock on request

Accredited temperature calibration

Accredited temperature calibration

code SLU001
Price On request
In stock on request
Accredited temperature and relative humidity calibration

Accredited temperature and relative humidity calibration

code SLU003
Price On request
In stock on request
Accredited CO2 calibration

Accredited CO2 calibration

code SLU015
Price On request
In stock on request

KIT-GSM with modem

KIT-GSM with modem

code KIT-GSM-W
Price On request
In stock on request
300Mbps Wireless N Nano Router

300Mbps Wireless N Nano Router

code TL-WIFI
Price On request
In stock 5 pcs

Universal probe holder for easy mounting to rack 19"

Universal probe holder for easy mounting to rack 19"

code MP047
Price On request
In stock 8 pcs
Wall holder for external probes DIGIL

Wall holder for external probes DIGIL

code SP009
Price On request
In stock 33 pcs
Magnetic holder for Web Sensors PAxxxx and TAxxxx

Magnetic holder for Web Sensors PAxxxx and TAxxxx

code SP104
Price On request
In stock on request

sintered bronze sensor protection

sintered bronze sensor protection

code F0000
Price On request
In stock on request
plastic sensor protection with stainless filter (gray)

plastic sensor protection with stainless filter (gray)

code F5200
Price On request
In stock on request
plastic sensor protection with stainless filter (black)

plastic sensor protection with stainless filter (black)

code F5200B
Price On request
In stock on request
PTFE sensor protection, white

PTFE sensor protection, white

code F5300
Price On request
In stock on request

COMET Database

COMET Database

code CDB
Price On request
In stock yes
COMET Cloud

COMET Cloud

code cloud
Price On request
In stock yes
COMET Cloud Lite for Android & iOS

COMET Cloud Lite for Android & iOS

code cloud_app
Price On request
In stock yes
COMET VISION - Analytical Software for Dataloggers and Multiloggers

COMET VISION - Analytical Software for Dataloggers and Multiloggers

code CV
Price FREE
In stock yes
Database Viewer for Comet Database

Database Viewer for Comet Database

code DBV
Price On request
In stock yes

Software

download-icon Comet Database One Click Installer (21.1-V)
487.31 MB
download-icon Database Viewer 3.20.0.0 dbapi 21.1
24.33 MB
download-icon Conversions - application for recalculation of values
694.50 KB
download-icon COMET Cloud Lite - Android (Google Play)
download-icon COMET Cloud Lite - iOS (App Store)

Others

download-icon Terms and Conditions COMET System s.r.o.
133.12 KB

Manuals

download-icon Quick Start Manual
961.10 KB

Catalogs

download-icon CATALOG - WebSensor with Ethernet output
4.06 MB
download-icon Catalogue Sheets - COMET Premium WebSensors 2.0
107.88 KB

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