T-Sentry 140-200RB Product Information.


T-Sentry 140 RB Ultra Cold Freezer Temperature Monitor Alarm
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Key Features:

  • Single ultra-cold temperature probe.
  • NIST calibrated/traceable sensors and system.
  • NIST certificate provided.
  • Standard operating range is -200°C to +50°C.
  • Adjustable/displayable high/low alert status indication and initial alarm delay period.
  • SPDT alarm contact output with adjustable delay period.
  • Rechargeable battery back-up with trickle charge.

T-Sentry 140-200RB Product Overview:

The Model T Sentry 140-200RB is a NIST calibrated/traceable single probe ultra low temperature (ULT) freezer monitoring and alert status indication system that utilizes a type "T" thermocouple embedded in a 3.0-inch long stainless steel sheath. This particular configuration of probe and monitor is excellent for accurately measuring the temperature (and/or level) of cryogenic liquid nitrogen (LN2) in freezers and other cryogenic cold storage vessels and systems.

This unit helps technicians maintain safe continuous cold-chain ultra low temperatures for cold storage of viruses, vaccines, IVF (in-vitro fertilization) materials, other biological materials, biopharma drugs and related applications.

This unit allows you to optionally upgrade (at any time) from "real-time" monitoring and alarm status indication to higher level Ethernet network data logging for compliance and/or SPC capability (together with our Model AMS data logger/alert notification system).

The T Sentry 140-200RB is a wall-mountable unit that's approximately 5" wide x 4.25" high x 1.75 deep which uses a small plug-in power supply for operation.

NOTE: The system can be used in a "stand-alone" mode or optionally integrated into our AMS remote PC-based, Ethernet network data logger/alert notification software. This configuration allows network-level data logging for documentation and SPC.


Above Video: Setting up the Model T-Sentry 140 Series.

Available Options:

  • Auto Dialer: (Model AD 2000) Dials a phone/pager to immediately provide alarm notification whenever a set alarm level is triggered.
  • Remote Alarm Delay Module (Model ADM 215 with Audible & Visual Alarm Indication).
  • 4 to 20mA output.
  • 10mV per degree voltage output.
  • RS-485 or RS-232 output.
  • Passcode-protected set points.
  • Freezer door status switch input.
  • Wall mounting bracket.
  • Large panel for mounting in cabinet.
  • Wi-Fi operation.(Special option. Consult factory).
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