Rotronic Hygrolog TL-1D Temperature Measurement Datalogger

Rotronic Hygrolog TL-1D

Rotronic Hygrolog TL-1D Datalogger – Temperature Measurement

Rotronic Hygrolog TL-1D is a temperature measurement datalogger providing accurate, reliable data logging for humidity and temperature through a compact, inexpensive unit.

Rotronic Hygrolog TL-1D features a large memory with a 32,000 data point memory and a compact design with a high IP protection.

The clear LCD screen offers easy to read visual alerts where  the right LED flashes green during data logging and the left LED flashes red when alarm limits breached or low battery.

Rotronic Hygrolog TL-1D Temperature Measurement Datalogger Product FEatures

  • High measurement accuracy of ±0.3 °C
  • Compact design with a high IP protection
  • Large storage capacity: 32,000 data point memory
  • Programmable start and stop time with the HW4 software
  • MIN/MAX/AVG statistical function
  • Datalogger includes HW4-lite programming and analysis software
  • Clear LCD with visual alerts
  • Appropriately long battery life (up to 3 years)
  • FDA 21 CFR Part 11 / GAMP 5 conform software HW4

Rotronic Hygrolog TL-1D Temperature Datalogger

Product Specifications

ParametersTemperature sensorHumidity sensorAccuracy at 23 °C ±5 °CRange of applicationIP ratingWeightDimensions
Rotronic HL-1D: Humidity and temperature. Rotronic TL-1D: TemperatureNTCHL-1D: ROTRONIC HygroMer IN-1 TL-1D: —Rotronic HL-1D: ±3.0 %RH / ±0.3 °C TL-1D: ±0.3 °C-20…70 °C / 0…100 %RHIP6785 g90 x 60 x 23 mm


Logging intervalBatteryBattery lifeBattery charge indicatorStorage capacityFunctionDisplayCommunication
30 s…24 h1 x CR23 years (at a logging interval of 1 h)Yes

HL-1D: 32,000 data point memory (RH&T)

TL-1D: 32,000 data point memory (T)

MIN/MAX/AVG statistical dataLCD, 2 lines, 1 decimal resolutionUSB-Mini port


Rotronic Hygrolog TL-1D

Rotronic Hygrolog TL-1D – Humidity & Temperature Datalogger


ROTRONIC HYGROLOG TL-1D Datalogger – Log intervals

Rotronic Hygrolog TL-1D performance :

Log-IntervalStorage capacity reached after
30 sec11 days 2 hours
5 min111 days
30 min1 year 301 days
45 min2 years 270 days
60 min>3 years


Climate control in buildings is generally temperature focused, but increasingly humidity measurement is being considered essential for optimum comfort and energy use in the HVAC industry.

Temperature Measurement Applications

Air conditioning control (BMS) – low cost, low specification products are generally used in this market (+/-5%rh, +/-1°C). Installing Rotronic sensors and dataloggers provides better accuracy and long term stability.

High specification HVAC installations requiring IP65 ingress protection – swimming baths, saunas, clean manufacturing areas.

Air handling system control and to balance air distribution systems by monitoring fresh air intake.

Rotronic Hygrolog TL-1D

Image : RectorSeal


View the current Rotronic catalogue :



Rotronic temperature measuring equipment includes Rotronic Pt100 probes and instruments such as transmitters, handhelds and data loggers.

T&D distribute the complete range of 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 sensors for pressure, level and point level (switching) measurement in industrial and hazardous areas.