COMET U0141M – IoT Wireless Datalogger with 2G Modem, 4 External Pt1000 Probes

COMET U0141M – IoT Wireless Datalogger with 2G Modem, 4× External Pt1000 Probes (-200 to +260 °C ±0.2 °C), 500,000 Value Memory, SMS/JSON Alarm 

The COMET U0141M is a powerful IoT wireless datalogger with an integrated 2G modem (quad-band GSM/GPRS) – the self-sufficient and independent solution for remote monitoring and long-term recording of temperature on up to four external Pt1000 probes simultaneously. Whether cold chain, warehouses, climate chambers, cold rooms, transport, pharmaceutical production, food industry, server rooms, heat-treatment systems, or remote sites – the U0141M immediately sends SMS and JSON alarms via GPRS when the limit values are exceeded. Regular JSON data transmission to the COMET Database or COMET Cloud (complete monitoring, alarm, and analysis tool) can be configured. On-site alarm is signaled by LED, LCD, and buzzer. With a memory of 500,000 measured values (non-cyclic) or 350,000 values (cyclic) and an included traceable calibration certificate (EN ISO/IEC 17025), it is perfect 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 reading above, ±0.4% from -200 to -50 °C). The acoustic and optical alarm gives immediate warning when freely adjustable limits are exceeded. Min/max values are stored. The backlit LCD displays all four channels simultaneously. The logger operates completely autonomously with an internal battery – no external power supply required. Data download to PC via USB-C is possible. COMET Cloud: 3 months included free of charge, afterward requires 1 Credit per year. The quad-band GSM modem (850/900/1800/1900 MHz) ensures worldwide coverage and stable data transmission.

The datalogger is maintenance-free, long-term stable, and comes with a 3-year warranty. The supplied traceable calibration certificate guarantees the highest measurement accuracy from the factory. Intuitive configuration via LCD or COMET Cloud. Whether as a mobile remote logger in transport vehicles, a stationary monitor in cold rooms, or a central device in production – the U0141M convinces through precision, autonomy, 2G connectivity, and easy handling. The four Pt1000 inputs enable multipoint measurements (e.g., feed/return flow, several products, or zones).

Why the COMET U0141M is the best IoT 2G Datalogger for 4× Pt1000:

• Integrated 2G modem (quad-band GSM/GPRS) – SMS/JSON alarm & data transmission without WLAN/LAN
• 4× external Pt1000 inputs – multipoint temperature measurement for comprehensive monitoring
• 500,000 value 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 – no external power supply required
• 3-year warranty – COMET quality guaranteed

Technical data U0141M:

• 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 GPRS
• 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: 2G modem (quad-band 850/900/1800/1900 MHz, GPRS Class B) + 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 chain & transport monitoring (multipoint remote)
• Warehouse and cold room monitoring at remote sites
• 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

Setup and operation – done in minutes

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

Summary:

• The GSM datalogger is designed for temperature measurement with four external Pt1000 probes
• When the configured limits are exceeded, SMS and JSON messages are sent via GPRS data connection
• Measured values can be transmitted to the COMET Cloud Internet storage platform, a comprehensive monitoring, alarm, and analysis system
• Regular transmission of JSON messages to the COMET Database can also be configured; the sending interval is adjustable
• Alarms are indicated locally by LED, LCD, and acoustically via an integrated buzzer
• Recording takes place in non-volatile electronic memory
• Data can be transferred to a PC via the included USB-C cable
• The device includes a traceable calibration certificate with declared metrological traceability of standards according to EN ISO/IEC 17025 requirements
• When purchasing a new IoT wireless datalogger with integrated modem, you receive three months of COMET Cloud free of charge; continued annual use requires one credit.

Scope of delivery:

• U0141M
• 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