Rotronic Hygrolog HL-NT2 Humidity & Temperature Data Logger

Rotronic Hygrolog HL-NT2 Humidity & Temperature Data Logger

Rotronic Hygrolog HL-NT2 Humidity & Temperature Data Logger

Rotronic Hygrolog HL-NT2 is a basic version of the HL-NT data logger series for the measurement of humidity and temperature offering high precision and reliability.

Additional probes can be connected to the Hygrolog HL-NT2 data logger via a docking station.

Typical applications include clean rooms, storerooms, server rooms, production areas, residential and office rooms and shipping

Rotronic Hygrolog HL-NT2 Humidity & Temperature Measurement data logger – Product Benefits

Flexible choice of probe

  • Can use all HygroClip2-compatible probes
  • HygroLog HL-NT3 with possibility to connect two additional external probes
  • Probes changed in just seconds

Functional display

  • Display of data on a clear, backlit graphic display with trend indicator
  • Optional display and keyboard for measurement display, status display, operation, adjustment and view of logged data

FDA CFR 21 Part 11 and GAMP4 compliance

  • Recording of all events such as battery changes, user actions and memory-card changes

Key user functions of the Rotronic Hygrolog HL-NT2 humidity and temperature data logger include:

  • FDA CFR 21 Part 11 /GAMP 4 compliance
  • Outstanding accuracy and long-term stability
  • Unlimited memory with Flash Card
  • Display of measured values
  • Interchangeable sensors for humidity and temperature
  • Large range of probes
  • User-friendly, validated HW4 software

Rotronic HYGROlog HL-NT2 Humidity And Temperature Transmitter

Product Specifications

Dimensions128 x 109 x 42 mm
Operating Range-10…60 °C / 0…100 %rh
Accuracy 23 ±5 °C±0.8 %rh / ±0.1 K
Measuring Range With Probe-100…200 °C / 0…100 %rh
Power Supplyvia optional docking station
Long-Term Stability<1 %rh / year
Humidity Sensor Hygromer IN-1
Temperature SensorPT100 1/3 DIN Class B
Psychrometric CalculationsAll psychrometric values
Measurement Intervalbetween 5 s and 24 h
Memory SizeMemory up to 47,000 records per MB on memory cards
Response Time T 635 sec.: Green flash when recording data, red flash for out-of-limit value or logger problem
Communication InterfacesMini USB (UART)
Enclosure MaterialABS
IP Protection RatingIP40
FDA/GAMP CompatibilityFDA 21 CFR Part 11 and GAMP compatible


The pharmaceutical industry is one of the largest users of humidity measurement equipment. Most drugs are sensitive to variations in humidity and moisture levels, so these need to be considered and controlled using measurement instruments, probes and sensors for the final products to be consistent in quality and performance.

Humidity Measurement Applications

Humidity instruments are used to both control (transmitters) and monitor (transmitters or data loggers) these conditions during “accelerated conditions” drug testing.

Production machines, driers, tableters, and coaters are all sensitive to humidity – quality control requires machine monitoring, area monitoring and final product Equilibrium Relative Humidity (ERH) measurement.

Clean room environments are humidity critical – environmental monitoring system (EMS) and measurement is validated to conform with regulatory requirements.


View the current Rotronic catalogue :


T&D distribute Rotronic probes, instruments, transmitters, data loggers, indicators and sensors for the measurement of dew point, flow, air velocity, process pressure, carbon dioxide and temperature. Click an icon for further information…..


Rotronic - Dew Point Measurement

Low Dew Point

Rotronic - Flow Measurement

Flow & Air Velocity

Rotronic - Process Pressure Measurement

Process Pressure

Rotronic - CO2 Measurement

Carbon Dioxide

Rotronic - Temperature Measurement


➡ Did you know? T&D supply VEGA process instrumentation for pressure, level and point level (switching) measurement

Data Sheets