Description

The CCC TMPU-1002 is a high-performance temperature monitoring processing unit developed by Control Concepts Corporation (CCC) for use in industrial safety, burner management, and process control systems. Designed as a compact DIN-rail module, the CCC TMPU-1002 provides eight universal analog input channels capable of accepting a wide range of temperature sensors—including RTDs (Pt100, Pt1000), thermocouples (Types J, K, T, E, N, R, S, B), and millivolt signals—making it exceptionally versatile for retrofitting legacy equipment or building new safety instrumented systems (SIS). Each channel features independent cold junction compensation (for thermocouples), high-resolution A/D conversion, and galvanic isolation to prevent ground loops and ensure measurement integrity in electrically noisy environments.

Positioned as a critical front-end device in safety-critical applications, the CCC TMPU-1002 continuously monitors temperature thresholds and triggers fail-safe actions via onboard relay outputs when limits are exceeded. It supports both hardwired safety logic and digital communication via Modbus RTU over RS-485, enabling seamless integration with PLCs, DCS, or SCADA systems. The CCC TMPU-1002 is commonly deployed in boiler control panels, thermal oxidizers, reactor vessels, and gas turbine enclosures where precise over-temperature detection is mandated by NFPA 85, IEC 61508, or API standards. Its rugged design, configurable alarm setpoints, and diagnostic capabilities make it a trusted solution for engineers prioritizing reliability, compliance, and operational uptime.

Technical Specifications

Main Features and Advantages

Universal sensor compatibility with per-channel configuration:
The TMPU-1002 eliminates the need for multiple specialized input cards by supporting nearly all common temperature sensors on a single module. Each of its eight channels can be individually configured via DIP switches or software (depending on firmware version) for sensor type, range, and alarm thresholds—ideal for mixed-sensor applications like dual-fuel burners or multi-zone ovens.

Integrated safety logic with dual independent relays:
Unlike basic temperature transmitters, the TMPU-1002 includes two fail-safe relay outputs that can be programmed for high/high-high alarms, sensor fault detection, or watchdog timing. These relays are suitable for direct connection to emergency shutdown (ESD) solenoids or burner fuel valves, reducing reliance on external logic and minimizing response latency during critical events.

Robust communication and diagnostics for predictive maintenance:
Via its Modbus RTU interface, the TMPU-1002 transmits real-time temperature values, alarm statuses, and diagnostic flags (e.g., open-circuit, short-circuit, out-of-range) to supervisory systems. This enables remote monitoring, trend analysis, and early fault detection—key for avoiding unplanned downtime in continuous processes like chemical manufacturing or power generation.

Application Field

The CCC TMPU-1002 is extensively used in industries where uncontrolled temperature rise poses fire, explosion, or equipment damage risks. In boiler and steam generator systems, it monitors flame scanner temperatures, economizer outlet temps, and furnace wall conditions to comply with NFPA 85 requirements for burner management systems (BMS). If a high-limit is breached, the TMPU-1002 immediately de-energizes its safety relays to cut fuel supply—preventing catastrophic overheating.

In oil & gas processing, the CCC TMPU-1002 safeguards compressor lube oil coolers, glycol reboilers, and flare stack pilots by providing redundant temperature validation for SIS logic solvers. Similarly, in waste incineration and thermal oxidizers, it ensures afterburner chambers maintain minimum destruction temperatures while protecting refractory linings from thermal shock. Even in food sterilization autoclaves and pharmaceutical lyophilizers, the TMPU-1002 delivers the accuracy and reliability needed for validated thermal processes governed by FDA or GAMP guidelines.

Related Products

TMPU-1004: 4-channel version with similar functionality—lower density, reduced cost.
TMPU-2002: Enhanced model with 4–20 mA analog outputs or Ethernet/IP support.
RTD-8X: Dedicated 8-channel RTD-only input module—higher precision for lab-grade apps.
TC-8K: Thermocouple-specific variant optimized for Type K in metal processing.
CCC RLY-2000: Standalone safety relay module—can be triggered by TMPU-1002 for higher-power loads.
Modbus Gateway: Converts TMPU-1002 RS-485 to Modbus TCP for DCS integration.

Installation and Maintenance

Pre-installation preparation: Mount the TMPU-1002 on a standard 35 mm DIN rail in a dry, ventilated enclosure away from high-EMI sources like VFDs or arc welders. Use twisted-pair, shielded cable for all sensor inputs, grounding the shield at the module end only. Verify that the 24 VDC power supply is clean and ripple-free (<10>TMPU-1002 with appropriate intrinsic safety barriers rated for the connected sensor type.

Maintenance recommendations: Calibrate the TMPU-1002 annually using a precision temperature simulator to verify accuracy across all channels. Inspect terminal blocks for corrosion or loosening, especially in high-humidity environments. Monitor Modbus data logs for recurring “sensor fault” flags—these often indicate deteriorating thermowell connections or aging RTDs. If a relay fails to actuate during a test, replace the entire TMPU-1002 unit, as internal components are not field-repairable. Always maintain at least one spare TMPU-1002 for rapid recovery in safety-critical systems.