COMET D4130 – Thermo-Hygro-Barometer with Data Logger, Internal Sensors, Temperature, Humidity, Dew Point

COMET D4130 – Digital Thermo-Hygro-Barometer with Data Logger, Internal Sensors -10 to +60 °C (±0.4 °C) / 5–95 %RH (±2.5 %) / 800–1100 hPa (±2 hPa), Dew Point

The COMET D4130 is the professional digital thermo-hygro-barometer with integrated data logger and internal sensors – the ideal solution for long-term monitoring and documentation of temperature, relative humidity, dew point, and barometric pressure in warehouses, climate chambers, cold rooms, server rooms, museums, archives, greenhouses, the pharmaceutical industry, or anywhere the complete indoor climate must be automatically recorded. With a memory capacity of 16,000 measurements (non-cyclic or cyclic), freely adjustable logging interval (10 s to 24 h), and a traceable calibration certificate, it is perfect for quality management, audits, and long-term environmental monitoring.

The internal temperature sensor measures from -10 to +60 °C (±0.4 °C), and the humidity sensor from 5 to 95 %RH (±2.5 %RH). The dew point is automatically calculated (-40 to +60 °C, ±1.5 °C at T<25 °C and RH>30 %). The barometric pressure sensor measures 800 to 1100 hPa (±2 hPa at 23 °C) and also displays the pressure trend over the last 3 hours. The acoustic and optical alarm issues immediate alerts when user-defined limits are exceeded. The Min/Max memory shows the extreme readings, and the Hold function allows manual storage of current values for later display. The backlit LCD display is easy to read, and both the measuring rate (0.7 to 5 s) and display update are adjustable. The robust housing (IP20) and battery operation (9 V block or 12 V power adapter with NiMH battery) make it mobile and mains-independent – battery life approx. 6 months.

The free PC software enables simple data transfer via USB cable (for download only; no measurement operation during the connection). Data can be displayed graphically, exported, and analyzed. The device is maintenance-free, long-term stable, and comes with a 3-year warranty. The included traceable calibration certificate guarantees maximum measuring accuracy from the factory. Intuitive operation via keys and clear menu navigation. Whether used as a portable logger in the field, a permanent monitor in production, or as a reference device in the laboratory – the D4130 stands out through precision, flexibility, and ease of use.

Why the COMET D4130 is the best thermo-hygro-barometer with logger:

• 16,000 measurement values memory – cyclic or non-cyclic
• Logging interval freely adjustable – 10 s to 24 h
• Complete 4-in-1: Temperature + Humidity + Dew Point + Air Pressure
• High accuracy – Temp. ±0.4 °C | Humidity ±2.5 %RH | Pressure ±2 hPa
• Air pressure trend over last 3 hours – detects weather changes
• Acoustic and optical alarm – immediate warning on limit exceedance
• Min/Max memory & Hold function – extreme values and manual snapshot
• Backlit LCD display – clearly readable even under poor lighting
• Traceable calibration certificate included – highest reliability
• Mobile battery power – approx. 6 months operating time (9 V block or NiMH battery)
• 3-year warranty – guaranteed COMET quality

Technical data D4130:

• Temperature measuring range: -10 to +60 °C (±0.4 °C)
• Humidity measuring range: 5 to 95 %RH (±2.5 %RH from 5 to 95 % at 23 °C)
• Dew point: -40 to +60 °C (±1.5 °C at T<25 °C and RH>30 %)
• Air pressure measuring range: 800 to 1100 hPa (±2 hPa at 23 °C)
• Resolution: 0.1 °C / 0.1 %RH / 0.1 hPa
• Alarm: acoustic + optical (adjustable limits)
• Memory: 16,000 values (non-cyclic or cyclic)
• Recording interval: 10 s to 24 h (adjustable)
• Measuring interval / display update: 0.7 to 5 s
• Display: backlit LCD
• Power supply: 9 V block battery or 12 V DC adapter with NiMH 9 V battery
• Battery life: approx. 6 months
• Operating temperature: -10 to +60 °C
• Protection rating: IP20
• Dimensions (without connector): 191 × 71 × 27 mm
• Weight (incl. battery): approx. 155 g
• Warranty: 3 years

Perfectly suited for:

• Long-term indoor climate monitoring in offices and warehouses
• Climate chambers and incubators
• Museums, archives, and art storage
• Cold chain and pharmaceutical storage
• Food and beverage production
• Process monitoring and quality control
• Mobile climate measurement in the field
• Reference measurements and documentation

Installation and operation – ready for immediate use

Insert battery or connect power supply – done! Set the limits, start logging – later transfer data to PC via USB. The backlit display and acoustic alarm ensure safe and convenient operation. Calibration certificate included – ideal for audits and quality management.

Summary:

• Thermometer, hygrometer, and barometer for measuring and recording temperature, relative humidity, and air pressure in internal non-volatile memory
• Also displays air pressure trend
• The free PC software allows recorded data to be transferred to a computer for evaluation
• LCD backlight
• Acoustic and optical alarms for measured values
• Storage of minimum and maximum readings
• Hold function: manual storage of current readings for later review
• The data logger connects to the PC via the supplied USB cable exclusively for data transfer from memory
• No measurement or recording possible during PC connection
• Simultaneous measurement of temperature, relative humidity, dew point, and air pressure (built-in sensors). Display of the air pressure trend over the last 3 hours.

Scope of delivery:

• D4130
• User manual
• Traceable calibration certificate
• 9 V battery
• Mini USB cable
• Plastic transport case
• Self-adhesive double lock for easy installation
• Free full version of COMET Vision analysis software