Rotronic Hygrolog HL-1D Humidity & Temperature Measurement Data Logger

Rotronic Hygolog HL-1D Data Logger

Rotronic Hygrolog HL-1D Data Logger

Rotronic Hygrolog HL-1D Data Logger is a compact, dependable and inexpensive humidity and temperature measurement data logger.

Based on Airchip 3000 technology, the unique features of the Rotronic Hygrolog HL-1D such as the two interchangeable HygroClip digital or analog probe inputs.

Typical applications and industries include HVAC, food industry, building services equipment, paper, textile and pharmaceutical.

Rotronic Hygrolog HL-1D Humidity & Temperature Measurement data logger

Rotronic Hygrolog HL-1D Humidity And Temperature Data Logger

Rotronic Hygrolog HL-1D Humidity And Temperature Data Logger


Rotronic Hygrolog HL-1D Humidity And Temperature Data Logger – Logging Intervals
Log-Interval Storage Capacity Reached After
30 sec 11 days 2 hours
5 min 111 days
30 min 1 year 301 days
45 min 2 years 270 days
60 min >3 years

Key user functions of the Rotronic Hygroflex8 HF8 humidity and temperature transmitter include:

  • 2 interchangeable HC2 or analog probes
  • Range of application electronics: -40…60 °C / 0…100 %rh
    -10…60 °C with LCD
  • Digital outputs, also combinable with analog outputs
  • Analog inputs (U/I)
  • Data logging, up to 10‘000 measured values
  • Relay outputs
  • Use as simulator for system validation *
  • Service interface

Rotronic Hygrolog HL-1D Humidity And Temperature data logger

Product Specifications

Probe Accuracy Measurement Range Weight Battery Life Display Type Current Consumption Bettery Indicator
±0.8 %rh / 0.1 C (typically value -20…70 °C / 0…100 %rh 85g 3 years LCD, 2 lines, resolution 1 decimal 1 x CR2 battery Yes

Storage Capacity IP Rating Comms Interface Humidity Sensor Adjustment  Accuracy At 23±5°C
32,000 data point memory (RH & T) IP67 Mini USB Rotronic Hygromer IN-1 Humidty 1-Point ±3.0 % RH ± 0.3°c


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