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High / Low Temperature Monitoring Alarm System.

T Sentry Model 140:
Product Information

* Note: This model has replaced the Model T Sentry 125.
Visit our documentation page if you wish to view old T125 documentation

CLICK HERE for larger
T Sentry Model 140 Picture


  • Easy to read LCD display.
  • Audio & visual alarms.
  • Adjustable & displayable alarm settings
    & initial alarm delay period.
  • Selectable audio mute period
  • Standard operating range -100°C to +100°C.
  • Available Options:
    • NiMH backup battery.
    • 0.1°C display.
    • SPDT alarm contact output
      with adjustable relay delay period.
    • 4 to 20 mA output.
    • RS-485 Output.
    • °F display.
    • Backlit display.
    • Thermocouple sensors;
      -Type T for -200°C to +50°C
      -Type K for 0°C to 400°C.
    • Ethernet Interface.
    • Password-protected set points.
    • Switch input.

The model T Sentry Model 140 is a user-programmable, computerized temperature alarm monitoring system that can be configured to operate in temperature ranges from-200 to +400 degrees C. This compact, yet powerful system is available in a wall-mount or free-standing configuration, includes high / low temperature alarms, audible and visual alarm indication (via beeper and LED), settable mute, and alarm "chirp" periods, and a UL-listed plug-in power supply. Other features include alarm beeper muting (with user-selectable periods; up to 30 minutes, optional relay contacts (for indicating a freezer temperature alarm condition / power failure) and the ability to hook into a remote alarm or telephone dialer. Customized programming is easily accomplished for any temperature alarm monitoring requirement (see video below).

This alarm/monitoring system is most often used within freezers, refrigerators, and coolers as well as within environmental chambers. It can also be used in to monitor processing and storage conditions in heating chambers, conveyorized ovens and batch ovens.

All T Sentry Model 140's can also be easily connected to work with Hampshire Controls Model CMS II computerized network data loggers. Consult us for all available options and configurations if you intend to interface both devices.

Video - Setting Up the T Sentry Model 140

T Sentry Model 140 - Feature Specifics:

Power: 9-30 volts DC (25 ma maximum). 120VAC, UL listed main power supply comes standard (220v is optional).
Optional Battery Back-Up: 7-cell NiMH, 8.4 volt 150 ma/hr. Uses standard 9v size (option B).
Charger: 2 ma trickle charger, built-in.
Standard sensor: 100 ohm RTD in 4.0-inch or 2.0-inch stainless steel sheath with a 10' lead wire.
Temperature ranges: -100 to +100°C (Model 140-100), °F ranges are available, (option -F). Resolution: 1°C standard, 0.1°C (option -H).
Accuracy: +/-1°C standard, +/-0.2°C (option -H).
Sensor options:
Model 140-400 - 'K' thermocouple, 0°C to 400°C, +/-1°C
Model 140-200R - 'T' thermocouple, -200°C to +50°C
1000 ohm RTD, voltage or current input (other ranges available per special order)
Mechanical: Case is black Bakelite, 5" wide x 4.25" height x 1.75"deep
wall mount with Velcro, or set on bottom edge;all wires exit through side.
Outputs: SPDT relay contacts with delay period (option -R)
10mV per degree, (option –V)
4 to 20 mA output, (option –I)
Digital output, (option –D)
Warranty: One-year on all Hampshire Controls products.

T Sentry Model 140 Single Probe Temperature Alarm Monitor - Ordering Info:

T Sentry Model 140 - Pricing

T Sentry Model 140 - Brochure

T Sentry Model 140 - Manual

Model T Sentry 140 Options:

Automatic Telephone Dialer - Model AD 2000 - Pricing

Automatic Telephone Dialer - Model AD 2001 - Pricing

Model AD 2001 Brochure


SECURE ORDER The Model T Sentry 140 with AD-2000 or AD-2001 Option



Hampshire Controls Corporation
1 Grove Street, Dover, NH 03821-0516
(Call Toll Free in the US and Canada) 866-496-9424 - (Worldwide) 603-749-9424
(Fax) 603-749-9433

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