The HiTemp140-M12 is a high temperature data logger with an M12 probe connector. Includes standard calibration certificate.
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Key Features:

  • Memory Capacity of 21,000+ Readings
  • Available to accept RTD or Thermocouple M12 probes
  • Capable of Measuring Temperature up to 850 °C



The HiTemp140-M12 is a high temperature data logger featuring an M12 probe connector. With the ability to change probes as needed, this device satisfies a multitude of application needs.

Compatible with a wide variety of M12 RTD or thermocouple probe styles, the HiTemp140-M12 is capable of measuring up to 850 °C (1562 °F) (probe dependent). The HiTemp140-M12 records and stores up to 21,504 time-stamped readings and can be programmed for immediate start or delayed start up to 18 months in advance.

The HiTemp140-M12 is compatible with the latest MadgeTech 4 Software making starting, stopping, and downloading simple and easy. Graphical, tabular, and summary data is provided for analysis and can be viewed as customizable engineering units.

Body of data logger cannot exceed 140 °C (284 °F), but can extend to higher temperatures when used with MadgeTech’s thermal barrier options.

Contact us to customize this product


Memory21,504 readings
Reading Rate4 readings per second up to 1 reading every 24 hours
Baud Rate125,000
Battery Life2 years typical (1 minute reading rate)

Fast reading intervals and extreme temperatures will shorten the battery life substantially

User Replaceable Battery
Material316 Stainless Steel, Radel
Dimensions2.14 in x 0.97 in x 0.97 in (54.5 mm x 24.6 mm x 24.6 mm)
Key Ring End Cap Key ring replaces standard bottom
Thru-hole: 0.150"
IP RatingIP40 - logger alone (with no probe connected)
The logger will inherit IP rating of the attached probe
(up to, and including IP68/IP69K).
SubmersibleYes (with probe attached)
Operating Environment-40 °C to +140 °C (-40 °F to +284 °F) 0 %RH to 100 %RH non-condensing, 0.002 PSIA to 60 PSIA (Body of Logger cannot Exceed 140 °C)
Required Interface PackageIFC400 or IFC406


Temperature SensorVarious RTD Probes with M12 Connector (Sold Separately)
Temperature Resolution0.0001 Ω, (0.01 °C / 0.018 °F) (Probe Dependent)
Temperature Calibrated Accuracy±0.0462 Ω (18 Ω to 200 Ω)
±0.1 °C (-200 °C to +265 °C / -328 °F to +509 °F)
±0.1% of Reading (+265 °C to 850 °C / +509 °F to 1562 °F)
(Probe Dependent)
Probe Temperature Range18 Ω to 400 Ω, -200 °C to +850 °C (-328 °F to +1562 °F) (Probe Dependent) (Body of Logger Cannot Exceed 140 °C)


HiTemp140-M12 Specification Sheet

HiTemp140-M12 Product User Guide

HiTemp140-M12 Dimensional Drawing

Support Videos

HiTemp140 | Changing the Battery

HiTemp140 | Replacing the O-Rings


Part Numbers

HiTemp140-M12 — 900227-00
HiTemp140-M12-KR — 902097-00


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