Overview
The Omega Engineering 402B-T Digicator is a proven multi-channel temperature indicator built for industrial automation and process control. This instrument delivers reliable thermocouple monitoring across five independent input channels, allowing operators and control systems to track temperature from multiple sensors without reconfiguration. The 402B-T combines laboratory-grade accuracy with industrial-grade durability, making it well-suited for complex automation environments where simultaneous multi-point temperature measurement is critical.
Key Features
- Five independent thermocouple input channels with manual front-panel pushbutton switching
- 1° temperature resolution in °F or °C (switchable via DIP switch)
- Multi-segment linearization for high measurement accuracy
- Isolated electronics design to minimize noise and interference
- Screw-terminal rear panel connections for ease of installation
- Compact panel-mount form factor suitable for control cabinets
Technical Specifications
- Model: 402B-T (Thermocouple input type)
- Input Type: Thermocouples (all standard types compatible with input modules)
- Input Channels: 5 (manual switching via front pushbuttons)
- Display Resolution: 1° (°F or °C)
- Temperature Range: Dependent on thermocouple type selected
- Display Type: Digital LED/LCD readout
- Connection Method: Screw terminals (rear panel)
- Operating Environment: Industrial (temperature and humidity specifications available in full datasheet)
Typical Applications
- Multi-zone furnace and oven temperature monitoring
- Batch process temperature supervision in chemical and food processing
- Equipment startup and shutdown verification in automated systems
- Temperature alarm and setpoint integration with PLC I/O modules
- Lab and production test environment monitoring
- HVAC system performance verification
Compatibility & Replacements
Compatible With
- Allen-Bradley PLC I/O systems via external relay or analog input conversion
- Siemens S7 and TIA Portal environments with suitable signal conditioning
- Third-party industrial control systems using standard 4-20 mA or voltage output modules
- Thermocouple input conversion cards (KA-B, KA-J, KA-K, KA-R, KA-S, KA-T, KB-T DIN, KB-PT3, KB-PT4)
Replaces / Drop-In Replacement For
- Verify compatibility with your system integrator before ordering. The 402B-T is a specialized indicator; confirm your application does not require a 400B (1-channel), 410B (0.1° resolution), or 412B (0.1° 5-channel) variant.
Works With
- Standard industrial thermocouple types (J, K, T, R, S, B) with appropriate input module selection
- External 4-20 mA transmitter outputs via optional voltage conversion
- Setpoint-based alarm outputs (check full datasheet for output options)
- Manual process monitoring and operator interface displays
