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

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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% RH

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 1 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

Temperature range: -10 to 60°C

code DIGIH/E-1

Ultra thin digital temperature/humidity probe, cable 2 m

Temperature range: -10 to 60°C

code DIGIH/E-2

Ultra thin digital temperature/humidity probe, cable 5 m

Temperature range: -10 to 60°C

code DIGIH/E-5

Digital temperature/humidity probe

Temperature range: -20 to 80°C

code DIGIL/E

Digital temperature/humidity probe, cable 1 m

Temperature range: -30 to 105°C

code DIGIL/E-1

Digital temperature/humidity probe, cable 10 m

Temperature range: -30 to 105°C

code DIGIL/E-10

Digital temperature/humidity probe, cable 15 m

Temperature range: -30 to 105°C

code DIGIL/E-15

Digital temperature/humidity probe, cable 2 m

Temperature range: -30 to 105°C

code DIGIL/E-2

Digital temperature/humidity probe, cable 5 m

Temperature range: -30 to 105°C

code DIGIL/E-5

Digital temperature/humidity probe

Temperature range: -20 to 80°C

code DIGIS/E

Digital temperature/humidity probe, cable 1 m

Temperature range: -10 to 60°C

code DIGIS/E-1

Digital temperature/humidity probe, cable 10 m

Temperature range: -10 to 60°C

code DIGIS/E-10

Digital temperature/humidity probe, cable 15 m

Temperature range: -10 to 60°C

code DIGIS/E-15

Digital temperature/humidity probe, cable 2 m

Temperature range: -10 to 60°C

code DIGIS/E-2

Digital temperature/humidity probe, cable 5 m

Temperature range: -10 to 60°C

code DIGIS/E-5

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

code SN274

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

code UWP001

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

code UWP001-2

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

code UWP001-4

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

code A1825eu

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

code A1825uk

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

code A1825us

Accredited temperature calibration

code SLU001

Accredited temperature and relative humidity calibration

code SLU003

Accredited CO2 calibration

code SLU015

KIT-GSM with modem

code KIT-GSM-W

300Mbps Wireless N Nano Router

code TL-WIFI

Universal probe holder for easy mounting to rack 19"

code MP047

Wall holder for external probes DIGIL

code SP009

Magnetic holder for Web Sensors PAxxxx and TAxxxx

code SP104

sintered bronze sensor cover

code F0000

plastic sensor protection with stainless filter (gray)

code F5200

plastic sensor protection with stainless filter (black)

code F5200B

PTFE sensor protection, white

code F5300

COMET Database

code CDB

COMET Cloud

code cloud

COMET Vision - Software for Dataloggers and Multiloggers

code CV

Database Viewer for Comet Database

code DBV

Related products

COMET Cloud

code cloud

COMET Database

code CDB

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code TA7611

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code TA3610

Multi-Plate Radiation Shield for Weather Sensors

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WiFi temperature and relative humidity sensor with integrated probe

code W3710

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code W3711

WiFi temperature and relative humidity sensor for two external probes

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code U3121G

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code U4440G

Web Sensor with PoE - remote thermometer hygrometer with Ethernet interface

code T3610

Web Sensor with PoE - remote thermometer hygrometer with Ethernet interface

code T3611

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

Main Benefits:

Technical data

Measured value

TEMPERATURE SENSOR

HUMIDITY SENSOR

DEW POINT

CO2 SENSOR

GENERAL TECHNICAL DATA

Optional accessories and download

Software

Others

Manuals

Firmware and SDK

Catalogs

Related products

CO₂ SENSOR