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3C\TEMP-ULTRA -200C Laboratory Grade Temperature Data Logger

A multi-use, user programmable, laboratory grade, high-accuracy digital sensor temperature data recorder with LCD screen. NFC-enabled for liquid nitrogen applications.

Memory: 8k
Temperature Range: Internal: -29°C to +72°C, Probe: -200°C to +300°C

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Download NFC Android Phone App


Multi-use Laboratory Grade Liquid Nitrogen Temperature Data Logger with Real-Time LCD Display for Instant Acceptance or Quarantine Decisions.

This revolutionary, multi-use, user-programmable, high-accuracy digital sensor temperature data recorder is specifically designed for measuring temperatures during the transportation of liquid nitrogen refrigerated vaccines, biological material, chemicals, pharmaceuticals, and for documenting the transportation of perishable commodities. They are NIST-Traceable and come with Certificates of Calibration and Traceability.

Functions include:

  • Internal Thermistor: accurately records time and temperatures for user selectable readings in Celsius or Fahrenheit.
  • LCD display: Real-time viewing of Current temperature, Max/Min Temperature, Run Time, Alarm Status, and Recording.
  • Built-in flat probe.
  • NFC-enabled.

Small Form Factor:

These units pack so many features in a small package. They have an extended battery life and can endure rough handling. The internal software records the following: time mechanism, start time, sampling intervals, end description for special instructions, alarm values, recording status, measurement data, software version, serial number, model type.

Visual Alarms:

All our data loggers can be programmed with alarm limits. Should the temperature reach levels outside these limits, the LCD will display “ALARM.” To start the recorder, simply press the start button!

Computer Ready:

Marathon’s easy-to-use MaxiThermal2 software is available for Microsoft Windows XP, 7, 8, 8.1 & 10. Simply plug the unit into a standard USB port on your PC. The Maxi-Thermal2 software and USB cable are available separately.
3C\TEMP-ULTRA – SKU #7048-200C
Logger Category, Description Category 2. Multi-Use. Temperature data logger with LCD screen, built-in Mini-USB connection, and a compact size.
Memory/Storage 8k memory (approximately 8,000 measurements)
Internal Sensor Temperature:
Wired chip in glass thermistor
Range: -29°C to +72°C / -20°F to +161°F
Accuracy: ±0.2°C at 0° to 10°C, ±1.0°C at extremes / ±0.4°F at 32° to 50°F, ±1.8°F at extremes
Resolution: 0.1°C / 0.18°F
External Sensor/Probe count and connector type Flat probe
Range: -200°C to +300°C / -328°F to +572°F
Accuracy: ±0.5°C / ±0.9°F
Alarm Programming User configurable. High and low alarm limits can be set by temperature.
Alarm Modes Exceed Limit. See Alarms for more information.
Alarm Reset Options Alarm is reset when logger is erased and reprogrammed
Alarm Notifications On screen text. See Alarms for more information.
Audible Alarm None
Display LCD screen
3.7cm(l) x 2.1cm(w) / 1.5 in(l) x .8 in(w)
Indicators On screen text
Size and Weight 6.7 cm(l) x 3.5 cm(w) x 1.4 cm (h) / 2.6 in.(l) x 1.4 in (w) x .55 in.(h)
42 grams / 0.8 oz.
CE Certified Yes
Water-resistant Yes, IP66 rated
Internal Firmware, Internal Clock Accuracy Internal Clock, Start/Stop time, Interval, User description, Alarm values, Recording status, Firmware version, Serial number, Model.
Clock Accuracy is better than 2 minutes per month on average at normal temperatures (-29°C to +72°C).
For loggers directly exposed to temperatures at or below -80°C, the expected accuracy is ±15 minutes per month
Measurement Intervals Programmable from 2 seconds per reading. See Duration Chart for examples.
Computer Interface (physical) Mini-USB
NFC Protocol, Android Interface
Data Retrieval Method Download to smartphone using NFC, or to PC using a compatible cable, reader station, and software.
Programming (Initialization) Method User programmable through smartphone using NFC, or through PC using a compatible cable and Marathon software.
Wireless Connection and Range NFC, 1cm range, but direct contact recommended.
Remote Monitoring and Network Connection type None
Required Accessories: Compatible Software (1 required for operation): • MaxiThermal2  • MDAS-Pro21 CFR  • NFC Android App (see software link at top of page)
Computer Interface (1 required for operation): • Standard A to Mini-B USB cable
Optional Accessories: Mounting Bracket
Included paperwork Quality Control sheet, NIST certificate, Packing List included with all purchases. See the Calibration page for more information.
Optional Paperwork Calibration Report including data included with purchase of Optional Calibration. See the Calibration page for more information.
Power Source, Battery Life and Replacement One CR2477 Battery. 2 year operating life, and 3 year shelf life. See Battery Performance page for more information.
Batteries are changed as part of the recommended annual recalibration. For battery replacement only, Call for price.
Warranty 1 Year Limited Warranty

Specifications subject to change without prior notice.

MaxiThermal2 Software for USB Loggers

Marathon’s MaxiThermal2 Software for USB Data Loggers

Marathon’s MaxiThermal2 Software allows you to view up to 8 multiple traces at one time, enables you to transfer the recorded information in your loggers to your computer, and to view, print and generate a report of the measurement data. The graphic representations are a simple X – Y plot of time versus temperature with unlimited zoom. The graph and all data points (date, time and temperature) can be printed.
Users have the ability to view numeric data in a screen window and Data can be Exported as a CSV file for use in other software. A Summary Information report showing the specific logger information, the Start and Stop Time, Duration of Recording, Measurement Interval, Highest, Lowest, Median and Average Temperatures as well as the High and Low Alarm information.
The data from the logger is easily downloaded to your PC via a standard USB 1.1 interface. MaxiThermal2 software is compatible with Windows XP, Vista, 7, 8 and 10.

MaxiThermal2 Software is not 21CFR Part 11 compliant. Click here for 21CFR Part 11 Compliant Software.

USB Standard A to Mini B Cable

USB Standard A to mini B Cable

Mounting Bracket

Palm-size Mounting Bracket
Palm-size Mounting Bracket

NFC Capable

By holding the Android smartphone directly over the LCD display, customers can instantly interrogate the data logger and create a PDF file of the recorded temperatures, then email them anywhere in the world. Download the NFC App here.

MaxiThermal NFC phone app - Menu Screen
MaxiThermal NFC phone app - Main Screen
MaxiThermal NFC phone app - Select File
MaxiThermal NFC phone app - View Data Screen
MaxiThermal NFC phone app - General Info Screen
MaxiThermal NFC phone app - Summary Screen
MaxiThermal NFC phone app - Graph

Additional information


Small Format



Temperature Range

-200°C to +72°C

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