COMET D3120 – Thermo-Hygrometer with Data Logger, Internal Sensors -10 to +60 °C

COMET D3120 – Digital thermo-hygrometer with data logger, internal sensors -10 to +60 °C (±0.4 °C) / 5–95 %RH (±2.5 %), dew point, 16,000 value memory 

The COMET D3120 is a professional digital thermo-hygrometer with an integrated data logger and internal sensors – the ideal solution for long-term monitoring and documentation of temperature, relative humidity, and dew point in warehouses, climate chambers, cold rooms, server rooms, museums, archives, greenhouses, pharmaceutical facilities, or anywhere temperature and humidity need to be automatically recorded. With a memory capacity of 16,000 readings (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 supervision.

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). Dew point is automatically calculated (-40 to +60 °C, ±1.5 °C at T<25 °C and RH>30 %). The acoustic and optical alarm provides immediate warning when adjustable limits are exceeded. The Min/Max memory shows the extreme values. The Hold function allows manual storage of current readings for later display. The backlit LCD screen is easy to read, with adjustable measuring rate (0.7 to 5 s) and display update. The rugged housing (IP20) and battery operation (9 V block or 12 V adapter with NiMH battery) make it mobile and independent – battery life approximately 6 months.

The free PC software allows easy data transfer via USB cable (for download only, no measurement during 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 supplied traceable calibration certificate guarantees maximum measurement accuracy from the factory. Intuitive operation via buttons and a clear menu. Whether used as a portable logger in the field, for continuous monitoring in production, or as a reference in the laboratory, the D3120 impresses with its precision, recording capacity, and user-friendly operation.

Why the COMET D3120 is the best thermo-hygrometer with logger:

• 16,000 data memory – cyclic or non-cyclic recording
• Freely adjustable logging interval – 10 s to 24 h
• High accuracy – Temp. ±0.4 °C | Humidity ±2.5 %RH
• Dew point calculation – ±1.5 °C at T<25 °C and RH>30 %
• Audible and visual alarm – immediate warning when limits are exceeded
• Min/Max memory & Hold function – extreme values and manual storage
• Backlit LCD – easily readable even in low light conditions
• Traceable calibration certificate included – highest traceability
• Mobile battery operation – approx. 6 months battery life (9 V block or NiMH battery)
• 3-year warranty – guaranteed COMET quality

Technical data D3120:

• 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 %)
• Resolution: 0.1 °C / 0.1 %RH / 0.1 °C dew point
• Alarm: acoustic + optical (adjustable limits)
• Memory: 16,000 values (non-cyclic or cyclic)
• Logging interval: 10 s to 24 h (adjustable)
• Measuring interval / display update: 0.7 to 5 s
• Display: backlit LCD
• Power supply: 9 V battery or 12 V DC adapter with NiMH 9 V battery
• Battery life: approx. 6 months
• Operating temperature: -10 to +60 °C
• Protection class: IP20
• Dimensions (without connector): 191 × 71 × 27 mm
• Weight (including battery): approx. 155 g
• Warranty: 3 years

Perfect for:

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

Installation and operation – ready to use immediately

Insert the battery or connect the power adapter – that’s it! Set limit values, start logging – and later transfer data to a 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 and hygrometer for measuring and recording temperature and relative humidity in internal non-volatile memory
• Free PC software allows transfer of recorded data to a computer for analysis; LCD backlight included
• Audible and visual alarm indication of measured values
• Storage of minimum and maximum values
• Hold function for manual storage of current readings
• Simultaneous measurement of temperature and relative humidity; selectable dew point measurement; integrated sensors
• The data logger connects to the PC via USB cable exclusively for data transfer from memory
• No measurement or logging possible while connected to the PC

Scope of delivery:

• D3120
• User manual
• Traceable calibration certificate
• 9 V battery
• Mini USB cable
• Plastic transport case
• Self-adhesive double lock for easy mounting
• Free full version of COMET Vision analysis software