COMET U4130 – Data Logger for Temperature, Humidity & Air Pressure

COMET U4130 – robust data logger with internal sensors (-30 to +70 °C ±0.4 °C / 0–100 %RH ±1.8 % / 600–1100 hPa ±1.3 hPa), dew point 

The COMET U4130 is a compact and high-precision data logger with integrated sensors for temperature, relative humidity, and barometric pressure – the ideal solution for autonomous long-term monitoring and documentation of indoor climate in warehouses, offices, server rooms, climate chambers, incubators, archives, museums, greenhouses, pharmaceutical areas, or anywhere temperature, humidity, and air pressure need to be recorded without external probes. With a huge memory of 500,000 values (non-cyclic) or 350,000 values (cyclic), freely adjustable logging interval (1 s to 24 h), and a traceable calibration certificate (EN ISO/IEC 17025), it is perfect for quality management, audits, ISO compliance, and climate monitoring.

The internal temperature sensor measures -30 to +70 °C (±0.4 °C), the humidity sensor 0 to 100 %RH (±1.8 %RH), and the barometric pressure sensor 600 to 1100 hPa (±1.3 hPa at 23 °C). The dew point is automatically calculated (-60 to +70 °C, ±1.5 °C at T<25 °C and RH>30 %). The acoustic and optical alarm (buzzer + LED) immediately warns when freely adjustable limits are exceeded. Min/Max values are stored. The backlit LCD display is easy to read, and the measurement/alarm update rate is adjustable (1 s, 10 s, 1 min). The logger operates autonomously on a 3.6 V AA lithium battery – service life of several years depending on the interval. No power supply required – ideal for both fixed and mobile installations. Recording non-cyclic (stops when memory is full) or cyclic (overwrites oldest data). Real-time clock with date/time. Data transfer to PC via USB-C (COMET Vision software).

The data logger is maintenance-free, long-term stable, and comes with a 3-year warranty. The included traceable calibration certificate ensures highest accuracy from the factory. Intuitive operation via keys and clear menu. The compact housing (61 x 93 x 32 mm) makes it unobtrusive and easy to mount. Whether as a standalone logger in production, a mobile tester in service, or a permanent part of indoor climate monitoring – the U4130 convinces with precision, robustness, and ease of use. No external probe needed – ready for immediate indoor measurements.

Why the COMET U4130 is the best data logger for T+RH+Pressure:

• Internal sensors for temperature + humidity + pressure – ready to use without probe
• 500,000 value memory – non-cyclic or cyclic
• Freely adjustable logging interval – 1 s to 24 h
• Acoustic & optical alarm – instant warning when limits are exceeded
• Min/Max memory – extreme values for all parameters
• Backlit LCD – readable temperature, humidity, pressure, and status
• Traceable calibration certificate included – EN ISO/IEC 17025
• Autonomous battery operation – lithium AA, service life of several years
• USB-C data transfer – easy readout via COMET Vision
• 3-year warranty – guaranteed COMET quality

Technical data U4130:

• Temperature internal: -30 to +70 °C (±0.4 °C)
• Humidity internal: 0 to 100 %RH (±1.8 %RH)
• Air pressure internal: 600 to 1100 hPa (±1.3 hPa at 23 °C)
• Dew point: -60 to +70 °C (±1.5 °C at T<25 °C and RH>30 %)
• Resolution: 0.1 °C / 0.1 %RH / 0.1 hPa / 0.1 °C dew point
• Channels: internal temperature, humidity, and pressure sensors
• Memory: 500,000 values (non-cyclic) / 350,000 values (cyclic)
• Logging interval: 1 s to 24 h
• Measurement/alarm update rate: adjustable 1 s, 10 s, 1 min
• Alarm: acoustic (buzzer) + optical (LED) when limit exceeded
• Display: backlit LCD
• Power supply: lithium battery 3.6 V AA
• Operating temperature: -30 to +70 °C
• Protection class: IP20
• Dimensions: 61 x 93 x 32 mm
• Weight (incl. battery): approx. 120 g
• Warranty: 3 years

Perfectly suited for:

• Indoor climate monitoring in offices, schools & hospitals
• Warehouse and cold storage monitoring
• Server rooms and data centers
• Pharmaceutical and food production
• Climate chambers and incubators
• Greenhouses & agriculture
• Quality management & audits
• Autonomous long-term logging without mains connection

Installation and operation – done in minutes

Insert the battery – done! Set intervals and limits, start logging – read out data via 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 data logger is designed for recording temperature, humidity, and air pressure
• Recording takes place in non-volatile electronic memory
• Data can be transferred to a PC via USB-C
• When set limits are exceeded, alarms are indicated via LED, LCD, and acoustic signal
• The recorder includes a traceable calibration certificate
• The metrological traceability of the standards complies with EN ISO/IEC 17025 requirements.

Scope of delivery:

• U4130
• User manual
• Traceable calibration certificate
• 1x lithium battery 3.6 V
• Free full version of COMET Vision analysis software
• USB communication cable not included