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AEMC L642 2126.08 Simple Logger II Thermocouple Temperature Data Logger
Product Information

L642 Datasheet L642 Datasheet
  L642 Owners Manual L642 Owners Manual
  Dataview Software Dataview Software
  Data Logger Graphing Data Logger Graphing
  Data Logger Comparison Chart Data Logger Comparison Chart

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AEMC L642 2126.08 Simple Logger II Thermocouple Temperature Data Logger

The AEMC L642 Thermocouple Simple Logger II is a 2 channel thermocouple data logger.

The choice of storage rates and data storage modes allows the user to easily configure the logger to optimize memory usage for the application. The logger has many application-friendly features including Extended Recording Mode (XRM) and delayed start time. The operator can record temperature at selectable rates of 1 per 5 seconds to 1 per day. Using E, J, K, N, R, S or T thermocouples, the logger measures from -346º to + 1767ºF with resolution down to 0.1º (range dependent).

The main benefit of the logger is its ability to perform many different recording tasks easily with intuitive setup from a computer using DataView software.

The logger samples analog information on the input and converts it to a digital signal, which is processed and stored with time and scale details. An optically isolated USB port allows transfer of data from the logger’s internal memory to the computer for analysis.


L642 Features

  • Two input channels
  • User-selectable thermocouple types E, J, K, N, R, S or T
  • Programmable storage rates from 8 per second to 1 per day
  • Three operator selectable storage modes: Stop when full, FIFO or XRM
  • Stores up to 240,000 readings in non-volatile memory
  • Powered by 2 AA Alkaline batteries
  • Compact, lightweight, fits anywhere
  • Five LED indicators clearly and quickly display status
  • Includes FREE DataView software for real-time display, data storing, analyzing data and generating reports
  • 50V Cat III



  • Refrigeration monitoring
  • Process monitoring
  • HVAC monitoring
Simple Logger II Model L642
Channels Two
Input Connection Two miniature, thermocouple connectors
Measurement Range Degrees F (Degrees C)
J: -346 to +2192 (-210 to + 1200)
K: -328 to +2501 (-200 to + 1372)
T: -418 to +752 (-250 to + 400)
N: -328 to +2372 (-200 to + 1300)
E: -238 to 1742 (-150 to + 950)
R: 32 to 3212 (0 to 1767)
S: 32 to 3212 (0 to 1767)
Resolution 0.1 Degrees C/F up to 1000 Degrees C/F, 1 Degrees above 1000 Degrees C/F
Accuracy 0.1% Percent to 0.2 Percent + 0.6 Degrees to 1 Degrees, depending on the range and T/C type
Sample Rate 8 samples taken at storage interval
Storage Rate Programmable from 5 seconds to 1 day
Storage Modes Start/Stop, FIFO and Extended Recording Mode (XRM)
Recording Length 15 minutes to 8 weeks, programmable using DataView
Memory 240,000 measurements (512KB) - The recorded data is stored in non-volatile memory and will be retained even if the battery is low or removed.
Communication USB 2.0 optically isolated
Power Source Two 1.5 Volts AA cell alkaline batteries
Battery Life 100 hours to >45 days
(dependent on sample rate and recording length)
Dimensions 4.94 x 2.75 x 1.28 inches (125 x 70 x 32millimeters)
Weight (with battery) 7 ounces (200 grams)
Case UL94-V0
Vibration IEC 68-2-6 (1.5 millimeter, 10 to 55 Hertz)
Shock IEC 68-2-27 (30 gr)
Drop IEC 68-2-32 (1 meter)

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