Description
The Tense DT-321 Temperature Controller is a digital control device designed to maintain a selected temperature in systems that require automatic temperature regulation. It uses an NTC temperature sensor to monitor conditions and ON/OFF control to operate compatible equipment.
The front panel includes a digital temperature display, SET button, UP and DOWN adjustment buttons, and status indicators. These controls allow users to view temperature readings and adjust operating parameters.
According to Tense’s product information, the DT-321 has a measuring and control range of −30°C to +150°C and provides OUT and ALARM outputs.
Key Product Features
– Brand: Tense
– Model: DT-321
– Product type: Digital temperature controller
– Measuring range: −30°C to +150°C
– Sensor type: NTC
– Control method: ON/OFF
– Outputs: OUT and ALARM
– Operating functions: Selectable heating and cooling
– Temperature adjustment: Adjustable setpoint and hysteresis
– Additional features: Temperature offset, password protection, and stored settings
– Connection: Plug-in connectors
These specifications are based on manufacturer documentation for the DT-321. Confirm the required sensor, supply voltage, output ratings, and wiring before selecting the controller for a particular system.
Applications of the Tense DT-321
The Tense DT-321 can be used in compatible systems that require temperature monitoring and automatic switching, including:
– Industrial temperature-control equipment
– Cooling and refrigeration systems
– Heating and cooling applications
– Production equipment
– Temperature-dependent control panels
Why Choose the Correct Temperature Controller?
Choosing a controller with the correct sensor type and temperature range helps ensure reliable readings and suitable control operation. The DT-321 uses an NTC sensor, so sensor compatibility is important when replacing an existing unit.
Check the existing controller’s model, wiring, supply voltage, and output requirements before ordering.

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