ABB TZIDC (V18345)

ABB **TZIDC (V18345)** is a smart valve positioner from ABB's TZID series, designed for pneumatic control valves in industrial automation (e.g., flow and pressure regulation in process control). Below are its key features and applications:  
### **1. Key Features**  
- **High-Precision Control**:  
  Utilizes digital feedback and microprocessor technology, achieving positioning accuracy of **±0.5%**, suitable for demanding process control (e.g., chemical, oil & gas, power plants).  
- **Communication Protocols**:  
  Supports **HART, Profibus PA/DP, Foundation Fieldbus (FF)**, enabling seamless integration with DCS/PLC systems.  
- **Adaptive Functionality**:  
  Features auto-calibration and adaptive control algorithms to match different valve characteristics (linear, equal percentage, etc.).  
- **Diagnostics & Maintenance**:  
  Built-in self-diagnostics monitor valve wear, air supply pressure, travel deviation, etc., with reports generated via software (e.g., ABB’s *Valve Assistant*).  
- **Environmental Durability**:  
  Rated **IP66/IP67** for dust/water resistance, operating temperature range: **-40°C to +80°C**.  
### **2. Technical Specifications (Typical)**  
- **Input Signal**: 4-20mA (HART), digital signals (Profibus/FF).  
- **Air Supply Pressure**: 1.4–7 bar (20–100 psi).  
- **Output Torque**: Compatible with various pneumatic actuators (single/double-acting).  
- **Air Consumption**: Energy-efficient design reduces compressed air usage.  
- **Certifications**: ATEX, IECEx (explosion-proof), SIL2/3 (functional safety).  
### **3. Applications**  
- **Process Industries**: Oil refining, chemical reactors, natural gas pipelines.  
- **Energy**: Steam regulation in power plants, water treatment valve control.  
- **Pharma & Food**: Precise flow control in sterile processes.  
### **4. Model Explanation (V18345)**  
- **V18345** is an internal ABB code, possibly indicating specific configurations (e.g., communication protocol or mounting accessories).  
- Full model details require suffixes (e.g., **TZIDC-110, TZIDC-200**).  
### **5. Installation & Commissioning**  
- Supports **direct or bracket mounting**, compliant with ISO 5211 actuator standards.  
- Configure via local buttons, HART handheld devices, or PC software for remote debugging.  
### **Notes**  
- Ensure valve type (rotary/linear), air supply pressure, and communication requirements during selection.  
- Use genuine ABB parts (e.g., feedback rods, seals) for maintenance.  

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