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Combined Sensor with Two Pt1000 Inputs and One Input for Digital Probes, Ethernet Output and PoE

Combined Sensor with Two Pt1000 Inputs and One Input for Digital Probes, Ethernet Output and PoE

The TA3645 model represents a hybrid Ethernet sensor that combines two highly accurate analog inputs for Pt1000 resistance probes with one digital input (for T+RH or CO2 probes).

Thanks to this configuration, the TA3645 is a universal monitoring device capable of measuring in the extreme range of -200 °C to +260 °C with an accuracy of ±0.2 °C.

The device is an ideal solution for demanding applications in healthcare or industry: Pt1000 inputs reliably monitor refrigerators, freezers, cryogenic boxes, or ovens, while the digital probe simultaneously monitors the room climate (temperature, humidity, or CO2).

For convenient operation and easy integration, the TA3645 offers a large backlit LCD display, acoustic alarm signaling, and PoE support. It also features a cable resistance compensation function for Pt1000 probes directly from the web interface.

Main Benefits:

  • 2x Pt1000 input + 1x digital T+RH or CO2 probe
  • Extreme temperature measuring range from -200 °C
  • 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
    TA3645
  • Warranty
    3 years
  • On request
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Technical data

Measured value

Temperature
Relative humidity
Counted values (dew point…)
CO2

TEMPERATURE SENSOR

Measuring range Depending on the connected Pt1000 probe
Accuracy Depending on the connected Pt1000 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× Pt1000 inputs + 1× digital T+RH or CO₂ probe, CINCH / ELKA connectors
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

Pt1000TG8/C, temperature probe

Pt1000TG8/C, temperature probe

Temperature range: -80 to 200°C
code SN104C
Price $75
In stock 120 pcs
Pt1000TG8/C, temperature probe, cable 2 m

Pt1000TG8/C, temperature probe, cable 2 m

Temperature range: -80 to 200°C
code SN105C
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Pt1000TG8/C, temperature probe, cable 5 m

Pt1000TG8/C, temperature probe, cable 5 m

Temperature range: -80 to 200°C
code SN108C
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Pt1000TG8/C, temperature probe, cable 10 m

Pt1000TG8/C, temperature probe, cable 10 m

Temperature range: -80 to 200°C
code SN113C
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Pt1000TG7/C, temperature probe

Pt1000TG7/C, temperature probe

Temperature range: -50 to 200°C
code SN164C
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Pt1000TG7/C, temperature probe, cable 2 m

Pt1000TG7/C, temperature probe, cable 2 m

Temperature range: -50 to 200°C
code SN165C
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Pt1000TG7/C, temperature probe, cable 5 m

Pt1000TG7/C, temperature probe, cable 5 m

Temperature range: -50 to 200°C
code SN166C
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Pt1000TG7/C, temperature probe, cable 10 m

Pt1000TG7/C, temperature probe, cable 10 m

Temperature range: -50 to 200°C
code SN167C
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2301-220/C, temperature probe, cable 1 m

2301-220/C, temperature probe, cable 1 m

Temperature range: -30 to 220°C
code SN168C
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2021-150/C, temperature probe, cable 1 m

2021-150/C, temperature probe, cable 1 m

Temperature range: -30 to 150°C
code SN169C
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PTS350A-2/0, temperature probe, cable 2 m

PTS350A-2/0, temperature probe, cable 2 m

Temperature range: -30 to 130°C
code SN170C
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2034-220/C, temperature probe, cable 1 m

2034-220/C, temperature probe, cable 1 m

Temperature range: -30 to 150°C
code SN175C
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Ambient temperature probe, 200-80/C

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Temperature range: -30 to 80°C
code SN177
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2061-200/C, temperature probe, cable 1 m

2061-200/C, temperature probe, cable 1 m

Temperature range: -50 to 200°C
code SN178C
Price $224
In stock on request
2061-200/C, temperature probe, cable 2 m

2061-200/C, temperature probe, cable 2 m

Temperature range: -50 to 200°C
code SN179C
Price $231
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2061-200/C, temperature probe, cable 5 m

2061-200/C, temperature probe, cable 5 m

Temperature range: -50 to 200°C
code SN180C
Price $249
In stock 17 pcs
2061-200/C, temperature probe, cable 10 m

2061-200/C, temperature probe, cable 10 m

Temperature range: -50 to 200°C
code SN181C
Price $279
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PTS350A-5/C, temperature probe, cable 5 m

PTS350A-5/C, temperature probe, cable 5 m

Temperature range: -30 to 130°C
code SN182C
Price $121
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PTS350A-10/C, temperature probe, cable 10 m

PTS350A-10/C, temperature probe, cable 10 m

Temperature range: -30 to 130°C
code SN183C
Price $143
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Pt1000TGL40/C, temperature probe, cable 1 m

Pt1000TGL40/C, temperature probe, cable 1 m

Temperature range: -30 to 80°C
code SN185C
Price $66
In stock 16 pcs
Pt1000TGL40/C, temperature probe, cable 2 m

Pt1000TGL40/C, temperature probe, cable 2 m

Temperature range: -30 to 80°C
code SN186C
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Pt1000TGL40/C, temperature probe, cable 5 m

Pt1000TGL40/C, temperature probe, cable 5 m

Temperature range: -30 to 80°C
code SN187C
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Pt1000TGL40/C, temperature probe, cable 10 m

Pt1000TGL40/C, temperature probe, cable 10 m

Temperature range: -30 to 80°C
code SN188C
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Pt1000TR160/C, temperature probe, cable 1 m

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Temperature range: -30 to 80°C
code SN199C
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Pt1000TR160/C, temperature probe, cable 2 m

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Temperature range: -30 to 80°C
code SN200C
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Pt1000TR160/C, temperature probe, cable 5 m

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Temperature range: -30 to 80°C
code SN201C
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Pt1000TR160/C, temperature probe, cable 10 m

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Temperature range: -30 to 80°C
code SN202C
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Pt1000TR160/C, temperature probe, cable 15 m

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Temperature range: -30 to 80°C
code SN203C
Price $101
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Pt1000TR160/C, temperature probe, cable 20 m

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Temperature range: -30 to 80°C
code SN204C
Price $112
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2091-250/C, Stick-in probe, cable 1 m

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Temperature range: -50 to 250°C
code SN210C
Price $242
In stock 5 pcs
2091-250/C, Stick-in probe, cable 2 m

2091-250/C, Stick-in probe, cable 2 m

Temperature range: -50 to 250°C
code SN211C
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2091-250/C, Stick-in probe, cable 5 m

2091-250/C, Stick-in probe, cable 5 m

Temperature range: -50 to 250°C
code SN212C
Price $312
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2091-250/C, Stick-in probe, cable 10 m

2091-250/C, Stick-in probe, cable 10 m

Temperature range: -50 to 250°C
code SN213C
Price $403
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Pt1000TR125/C, temperature probe, cable 1 m

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Temperature range: -190 to 150°C
code SN239C
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Pt1000TR125/C, temperature probe, cable 2 m

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Temperature range: -190 to 150°C
code SN240C
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Temperature range: -190 to 150°C
code SN241C
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Pt1000TR125/C, temperature probe, cable 10 m

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Temperature range: -190 to 150°C
code SN242C
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Temperature range: -50 to 400°C
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Temperature range: -50 to 200°C
code SN252C
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Temperature range: -50 to 400°C
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Temperature range: -30 to 180°C
code SN263C
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Temperature range: -30 to 180°C
code SN264C
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Temperature range: -30 to 180°C
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sintered bronze sensor cover

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plastic sensor protection with stainless filter (gray)

plastic sensor protection with stainless filter (gray)

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In stock on request
plastic sensor protection with stainless filter (black)

plastic sensor protection with stainless filter (black)

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COMET Database

COMET Database

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Price $990
In stock yes
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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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Contact

COMET AMERICA
11045 Alameda Ave
Inver Grove Heights, MN 55077
USA

E-mail: info@comet-america.com

Telephone customer support
Phone: (612)-845-6990

We produce

Leading manufacturer of temperature, humidity, atmospheric pressure, carbon dioxide CO2 transmitters, data loggers, monitoring systems, data acquisiton systems, thermometers, hygrometers, barometers. Production includes data acquisition systems, humidity, temperature, CO2 transmitters and portable thermometers, hygrometers, barometers, CO2 meters. Instruments are designed for accurate measurement and for monitoring environmental conditions.

All instruments come with included traceable calibration certificate with declared metrological traceability of etalons based on requirements of EN ISO/IEC 17025 standard.