U4440 | Built-in Sensors

COMET U4440 Data logger is designed to record temperature, humidity, atmospheric pressure and CO₂. In case of exceeded set limits alarms are indicated by LED, LCD and acoustically by built-in beeper.

The recording is performed in a non-volatile electronic memory. The data can be transferred to a PC via USB-C.

Recorder includes Traceable calibration certificate with declared metrological traceability of etalons is based on requirements of EN ISO/IEC 17025 standard.

Warranty: 3 years

INCLUDED IN DELIVERY:

• U4440
• Instruction Manual
• Traceable Calibration Certificate
• Rechargeable Battery
• Power Supply
• USB-C Cable
• FREE Analytical Software COMET Vision

MEASURED VALUE
Temperature
Relative humidity
Counted values (dew point…)
CO₂
Atmospheric pressure

TEMPERATURE SENSOR
Measuring range -20 to +60 °C
Accuracy ±0.4 °C
Resolution 0.1 °C

HUMIDITY SENSOR
Measuring range 0 to 100 % RH
Accuracy ± 1.8 % RH
Resolution 0.1% RH

DEW POINT
Measuring range -90 to +60 °C
Accuracy ±1.5 °C at ambient temperature T <25 °C and RH >30 %
Resolution 0.1 °C

CO₂ SENSOR
Measuring range 0 to 5000 ppm
Accuracy ±(50ppm +3% from reading) at 25°C and 1013hPa
Resolution 1 ppm

ATMOSPHERIC PRESSURE SENSOR
Measuring range 600 to 1100 hPa
Accuracy ±1.3 hPa at 23 °C from 800 to 1100 hPa
Resolution 0.1 hPa

GENERAL TECHNICAL DATA
Operating temperature -20 to +60 °C
Channels internal sensor for temperature, humidity, CO₂ and atmospheric pressure
Memory 500,000 values in noncyclic logging mode; 350,000 values in cyclic record mode
Recording interval adjustable from 1 s to 24 h
Display and alarm refresh adjustable 1 s, 10 s, 1 min
Recording mode noncyclic – data logging stops after filling the memory
cyclic – after filling memory oldest data is overwritten by new
Real time clock year, leap year, month, day, hour, minute, second
Power battery SONY LiIon 5200mAh
Protection class IP20
Dimensions 61 x 93 x 53 mm
Weight (including batteries) approx. 250 g
Warranty 3 years