Features
- 1/4 DIN size: 96×96 mm, depth only 65 mm
- Built-in Laser Trim ASIC for high stability
- Universal inputs: J/K T/C, PT100 RTD
- ±1% full scale accuracy for precise control
- Wide span range up to 1200°C available
- ON/OFF or proportional time control selectable
- Relay, SSR, or analog output flexibility
- Alarm output with ±10% deviation setting
- LED indicator for status and alarm conditions
- Red 0.5” 3-1/2 digit LED process display
- Reverse action control configuration
- 90–264VAC wide-range power input
- Sensor break protection with upscale detection
- Manual reset option for alarm reset
- UL, CSA, CE compliant for safety and EMC
BTC-404 Compact PID Process Controller
1/4 DIN size, universal input, and stable control
The BTC-404 is a panel-mount fuzzy PID controller that delivers reliable temperature and process control in a compact 1/4 DIN (96×96 mm) format. It supports thermocouple (J/K) and RTD (PT100) inputs and offers ON/OFF or time-proportional control. With features such as deviation alarm, high-visibility LED display, and selectable output types (relay, SSR, or analog), this controller is ideal for integration into industrial heating, cooling, and automation systems.
BTC-404 Panel Interface and Display
Clear LED display and intuitive indicator lamps
The BTC-404 features a 0.5-inch red 3-1/2 digit LED display, providing excellent readability of process values even in low-light industrial settings. The panel includes ON (red) LED lamps to indicate output status and alarm conditions, helping operators monitor real-time operation at a glance. A precise analog dial knob allows smooth adjustment of the control setpoint, ensuring accuracy and convenience during parameter setup. Designed with simplicity and reliability in mind, the BTC-404 panel interface reduces operator error and supports quick configuration without complex menus or programming steps. This design makes it ideal for OEM and system-integrated temperature control environments.
Wide Compatibility
Thermocouple and RTD support with high accuracy
BTC-404 supports Type J and K thermocouples as well as 3-wire PT100 RTDs (DIN or JIS standard). The input system features ±1% of span accuracy and cold junction compensation for thermocouples. It also includes upscale detection for sensor break and excellent noise immunity, ensuring stable performance in challenging industrial environments.
Flexible Control Choices
Relay, SSR drive, analog and alarm outputs
BTC-404 offers multiple control output formats:
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Relay contact output (5A/240VAC)
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SSR voltage drive (32VDC / 20mA)
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Analog outputs: 0–10VDC, 0–20mA, or 4–20mA (load up to 500Ω)
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Alarm relay output (2A/240VAC) with deviation settings
These output types provide versatile integration with various process equipment and control systems.
Applications
Specification
Power
Input
Control
Output
Adjustment
Indication
Environmental and Physical Specifications
Approval Standards
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FAQ
BTC-404 supports Type J and K thermocouples, as well as 3-wire PT100 RTD sensors (DIN or JIS standard), making it suitable for a wide range of temperature control applications.
The controller offers relay output (5A/240VAC), SSR voltage drive (32VDC / 20mA), and analog outputs (0–10VDC / 4–20mA / 0–20mA). An additional alarm relay output (2A/240VAC) is also available.
Yes. BTC-404 supports both ON/OFF and PID control modes, with adjustable control parameters and fine-tuning via the front panel knob.
Yes. It is equipped with a 0.5" red 3.5-digit LED display, providing clear and reliable real-time readings for process monitoring.
BTC-404 is a 1/4 DIN panel-mount controller (96×96 mm) with a shallow depth of only 65mm, making it ideal for compact control panels.
