COMET U0141G – IoT Wireless Datalogger with 4G Modem, 4 x External Pt1000 Probes

COMET U0141G – IoT Wireless Datalogger with 4G Modem, 4× External Pt1000 Probes (-200 to +260 °C ±0.2 °C), 500,000 Value Memory, SMS/JSON Alarm 

The COMET U0141G is a powerful IoT wireless datalogger with an integrated 4G modem (LTE Cat 1) – an autonomous and independent solution for remote monitoring and long-term recording of temperature from up to four external Pt1000 probes simultaneously. Whether in the cold chain, warehouses, climate chambers, cold rooms, transport, pharmaceutical production, food industry, server rooms, heat treatment systems, or remote sites – the U0141G immediately sends SMS and JSON alarms via 4G when preset limits are exceeded. Regular JSON data transmission to the COMET Database or COMET Cloud (a complete monitoring, alarm, and analysis tool) can be configured. On-site alarm is indicated by LED, LCD, and buzzer. With a memory capacity of 500,000 measurement values (non-cyclic) or 350,000 (cyclic), and an included traceable calibration certificate (EN ISO/IEC 17025), it is ideal for quality management, audits, temperature mapping, and ISO compliance.

The four external Pt1000 inputs measure temperature from -200 to +260 °C (±0.2 °C from -50 to +100 °C, ±0.2% of the measured value above, ±0.4% from -200 to -50 °C). Acoustic and optical alarms give instant warning when freely adjustable limits are exceeded. Min/max values are recorded. The backlit LCD displays all four channels simultaneously. The logger operates autonomously using an internal battery – no external power supply required. Data download to PC via USB-C is possible. COMET Cloud: 3 months free included, after that 1 Credit per year. The LTE FDD B1/B3/B5/B7/B8/B20 & GSM/GPRS/EDGE 900/1800 MHz modem ensures worldwide coverage and stable data transfer.

The datalogger is maintenance-free, long-term stable, and comes with a 3-year warranty. The included traceable calibration certificate ensures maximum measurement accuracy from the factory. Intuitive configuration via LCD or COMET Cloud. Whether used as a mobile remote logger in transport vehicles, as a stationary monitor in cold rooms, or as a central device in production – the U0141G impresses with precision, autonomy, 4G connectivity, and easy handling. The four Pt1000 inputs allow multipoint measurements (e.g. flow/return, multiple products or zones).

Why the COMET U0141G is the best IoT 4G datalogger for 4× Pt1000:

• Integrated 4G modem (LTE Cat 1) – SMS/JSON alarm & data transfer without WLAN/LAN
• 4× external Pt1000 inputs – multipoint temperature measurement for comprehensive monitoring
• 500,000 measurement memory – non-cyclic or cyclic
• COMET Cloud – complete monitoring, alarm & analysis (3 months free)
• Acoustic/optical alarm + LED – instant local warning
• Wide measuring range – -200 to +260 °C (±0.2 °C core range)
• Backlit LCD – simultaneous display of all four channels
• Traceable calibration certificate included – EN ISO/IEC 17025
• Battery-powered autonomous operation – no external power supply needed
• 3-year warranty – guaranteed COMET quality

Technical data U0141G:

• External temperature (Pt1000): -200 to +260 °C (±0.2 °C from -50 to +100 °C / ±0.2% above / ±0.4% from -200 to -50 °C)
• Resolution: 0.1 °C
• Channels: 4× external Pt1000
• Alarm: acoustic + optical + SMS/JSON via 4G
• Memory: 500,000 values (non-cyclic) / 350,000 values (cyclic)
• Internal logging interval: 1 s to 24 h
• COMET Cloud logging interval: from 5 minutes
• Measurement/alarm interval: adjustable 1 s, 10 s, 1 min
• Display: backlit LCD
• Communication: 4G modem (LTE FDD B1/B3/B5/B7/B8/B20 + GSM/GPRS/EDGE 900/1800 MHz) + USB‑C
• Power supply: internal battery (operating time depending on configuration: several months/years)
• Operating temperature: -20 to +60 °C
• Protection: IP67 (device)
• Warranty: 3 years

Perfect for:

• Cold chains & transport monitoring (multipoint remote)
• Warehouse and cold room monitoring at remote locations
• Pharmaceutical and food production (multi-zone)
• Climate chambers and incubators
• Product & ambient temperature (multi-channel)
• Quality management & audits
• Autonomous long-term logging without mains connection
• Mobile testing and service

Installation and operation – ready in minutes

Connect external Pt1000 probes, insert SIM card (if required), activate the battery – done! Configure intervals, limits, and Cloud/SMS options, start logging, and read data via COMET Cloud or USB-C. The backlit display and acoustic/optical alarm ensure safe and convenient operation. Calibration certificate included – ideal for audits and quality management.

Summary:

• The 4G datalogger is designed for temperature measurement with four external Pt1000 probes
• When the set limits are exceeded, SMS and JSON messages are sent via the 4G data connection
• The measured values can be transmitted to COMET Cloud, a comprehensive monitoring, alarm, and analysis system
• Regular sending of JSON messages to the COMET Database can also be configured; the send interval is adjustable
• Alarms are shown locally by LED, LCD, and acoustically via an integrated buzzer
• Data is recorded in non-volatile electronic memory
• Data can be transferred to a PC using the supplied USB‑C cable
• The device includes a traceable calibration certificate with declared metrological traceability according to EN ISO/IEC 17025
• When purchasing a new IoT wireless datalogger with integrated modem, you receive 3 months of COMET Cloud free of charge; continued annual use requires one credit.

Scope of delivery:

• U0141G
• User manual
• Traceable calibration certificate
• Battery
• Power adapter
• USB-C cable
• Free full version of COMET Vision analysis software
• COMET Cloud for 3 months
• External probes not included
• SIM card not included