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3CTEMP-USB -200C Temperature Logger

A multi-use, user programmable, electronic temperature data recorder with LCD display and dual sensors, for cryogenic applications.

Memory: 8k
Temperature Range: INTERNAL SENSOR -29°C TO +72°C & EXTERNAL PROBE -200°C to +3002°C

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3ctemp-USB -200C

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Multi-use Temperature Data Logger with Dual Sensors, Built-in Probe, and Real-Time LCD Display for Instant Acceptance or Quarantine Decisions for Cryogenic Applications.

The 3C\TEMP-USB -200C is a reliable and cost-effective digital temperature recorder for all industrial and commercial applications. It has one sensor for ambient temperatures inside the case, and one external RTD stainless-steel probe that monitors temperatures from -200°C (-328°F) up to +72°C (+161.6°F). It is ideal for monitoring all of your cryogenically stored stem cells and biologic materials.

These high-precision laboratory-grade products will operate up to 2 years without a battery change. The LCD display provides real time viewing of ambient and probe temperatures prior to downloading to a computer.

Small Form Factor: The internal firmware is user programmable and provides the following features: start time delay, sampling intervals, high and low alarm window values, recording status, and measurement data.

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 7, 8, 8.1 & 10. Simply plug the unit into a standard USB port on your PC. The MaxiThermal2 software and USB cable are available separately.

3C\TEMP-USB -200C – SKU #7065
Logger Category, Description Category 2. Multi-Use. Cryogenic temperature data logger with external probe, LCD screen, built-in Mini-USB connection, and a compact size.
Memory/Storage 8k memory (approximately 8,000 measurements)
Internal Sensor Ambient Temperature sensor (inside case):
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, ±1.5°C at extremes / ±0.4°F at 32° to 50°F, ±2.7°F at extremes
Resolution: 0.1°C / 0.18°F
External Sensor/Probe count and connector type 1, Soldered
Cryogenic Sensor (external probe): RTD
Range: -200°C to +300°C / -328°F to +572°F
Accuracy: ±2.0°C / ±3.6°F
/ ±0.9°F at 32° to 86°F, ±3.6°F at extremes
Resolution: 0.1°C / 0.18°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
3.7 cm(l) x 2.1 cm(w) / 1.5 in(l) x 0.8 in(w)
Indicators On screen text
Size and Weight 6.7 cm(l) x 3.5 cm(w) x 0.9 cm (h) / 2.6 in.(l) x 1.4 in (w) x .35 in.(h)
33 grams / 1.16 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
Data Retrieval Method Download to PC using a compatible cable and software
Programming (Initialization) Method User programmable through PC using a compatible cable and Marathon software.
Wireless Connection and Range None
Remote Monitoring and Network Connection type None
Required Accessories: Compatible Software (1 required for operation): • MaxiThermal2MDAS-Pro21 CFR
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 CR2450 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

Additional information


Small Format



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