Multiple-Use PDF Data Logger (Temperature Internal/External NTC Thermistor)

Product Code: HDT-161

Easily monitor the temperature of your process with this multiple-use, PDF temperature USB data logger. The HDT-161 accurately measures ambient temperature using an internal NTC thermistor temperature sensor and can also accept an external NTC thermistor temperature probe as input (available separately). Up to 48,000 readings can be sampled (24,000 via internal sensor, 24,000 via external sensor), allowing up to 8 markings during data gathering.

The logger is compact, lightweight, battery powered and features a clear LCD display. No additional software or drivers are required as everything is embedded within the logger. Fully programmable, the configuration software can be used to set the language, program sample rate, start delay, temperature unit, alarm type, alarm delay, alarm temperature limits, password and company name. The configuration software is compatible with Microsoft® Windows XP, 7, 8 and 10.

To record data simply plug the logger into a computer USB port, run the configuration software and set required parameters such as language, sample rate, alarm and password. Remove the logger, press the start key and place in the area to be monitored. Once complete press the stop key, plug back into your computer, run the software again and convert the recorded data into a PDF report or Microsoft® Excel spreadsheet containing device specification and statistical summary, a table of results and a graph (graph is shown on pdf report only).

An instruction manual and manufacturer's calibration certificate are also stored in PDF format on the logger.

EN12830 and RoHS compliant, with an IP65 (NEMA 4) protection class.

External Temperature Probes:

HDT161-TP1: External temperature probe without handle (20mm x 3.75mm diameter probe, 2m cable)

HDT161-TP2: External temperature probe with handle (10mm x 3.75mm diameter probe, 75mm handle x 12.3mm diameter, 1.15m cable)

Also available as:

HDT-160 Multiple-Use PDF Data Logger (Temperature Internal NTC Thermistor)

HDT-162 Multiple-Use PDF Data Logger (Temperature Internal NTC Thermistor, Humidity Internal Capacitive)

  • Features
  • Technical
  • Documents
  • Software
    • Multiple-use, easy to use (large LCD), compact, light design
    • USB 2.0 interface, plug and play (no software or drivers required)
    • Battery powered (supplied)
    • Large memory capacity: 48,000 readings (24,000 internal, 24,000 external)
    • High accuracy NTC thermistor sensor (internal/external)
    • "Mark" key to allow up to 8 markings during data gathering
    • Embedded manual (6 languages) and calibration certificate
    • Fully programmable: 6 languages, sample rate, start delay, temp. unit, alarm type, alarm delay, alarm temp. limits, password, company name
    • Detailed reports in PDF and Microsoft® Excel format
    • 4 status LEDs: REC, Low Battery symbol, High (H), Low (L)
    • EN12830 and RoHS compliance
    • IP65 (NEMA 4) protection class
    • Compatible with Microsoft® Windows XP / 7 / 8 / 10
    • Optional external temperature probes available (sold separately)
  • Technical Details
    Internal Temperature Sensor NTC Thermistor 
    Internal Temperature Range -30°C to +70°C (-22°F to +158°F)
    Internal Temperature Accuracy ±0.5°C
    Internal Temperature Resolution  0.1°C (0.1°F)
    External Temperature Sensor NTC Thermistor 
    External Temperature Range -30°C to +70°C (-22°F to +158°F)
    External Temperature Accuracy ±0.5°C
    External Temperature Resolution  0.1°C (0.1°F) 
    Unit of Measurement  °C, °F 
    Protection Class IP65 (NEMA 4)
    Logging Type Multiple-use
    Sampling Points (readings) 48,000 (24,000 internal, 24,000 external)
    Sampling Interval 30 seconds, 5, 10, 30, 60, 90, 120 minutes
    Start Delay 0, 5, 30, 45, 60, 90, 120 minutes, 24 hours
    Interface/Compatibility USB 2.0, Microsoft® Windows XP / 7 / 8 /10
    Display LCD (29mm x 19mm approx.)
    Operation Keys  3 keys: Start/Stop, Mark and Max/Min
    LED Indicators  REC, Low Battery Symbol, High Alarm, Low Alarm
    Alarm Range (programmable)  -30°C to +70°C (-22°F to +158°F)
    Alarm Delay 0, 5, 30, 45, 60, 90, 120 minutes
    Alarm Type Single event, cumulative, disable
    Operating Temperature -30°C to +70°C (-22°F to +158°F) whilst logging, room temperature whilst in computer
    Operating RH% Humidity < 80%
    Storage Temperature -40°C to +85°C (-40°F to +185°F)
    Storage RH% Humidity < 90%
    Compliance  EN12830, RoHS
    Power 2 x 3V CR2032 batteries (supplied, replaceable), 3 months life approx.
    Dimensions (logger) 110mm (L) x 40mm (W) x 19mm (D)
    Weight (logger) ~52g (with batteries installed), ~46g (without batteries)


  • Embedded Software Compatibility

    Embedded Software Compatibility

    Compatible with Microsoft Windows XP, 7, 8 and 10