This listing is for the ATi f12/D Gas transmitter The units are in full working condition and ready for immediate use ATi F12/D Gas Transmitter Overview The Series F12D Gas Transmitter is designed for detection of a variety of toxic gases in hazardous area applications. In addition, it is also well suited for general-purpose environments where toxic gas measurement is required. The F12D is highly customizable, making it adaptable to nearly every fixed-mount toxic gas monitoring application. Key Features Extensive Gas Detection Supports over 60 interchangeable electrochemical sensors for detecting gases such as chlorine, ammonia, hydrogen sulfide, formaldehyde, nitric oxide, phosgene, and more. Auto-Test Function An integrated Auto-Test system uses a real gas sample to verify sensor function—eliminating the need for manual bump tests and ensuring operational integrity. Smart Sensor Technology H10 Smart Sensors store their own calibration data and can be swapped out in the field without recalibration, reducing maintenance time and cost. Rugged, Durable Design The F12D features a polycarbonate enclosure with stainless steel hardware, IP65 ingress protection, and is corrosion-resistant for harsh environments. Flexible Power Supply Options Operates on 12–24 VDC, 115 VAC, or 230 VAC to suit various site requirements. Communication Capabilities Offers RS-232/485 output and optional HART® or Modbus RTU for seamless integration into digital control systems. Highly Customizable for Diverse Applications The F12D offers broad configuration options, making it suitable for: Hazardous Areas (e.g., chemical plants, refineries) General Industrial Use (e.g., wastewater treatment, food & beverage, laboratories) Customization Options Include: Sensor Holder Styles Integral mount Remote mount (6 ft cable) Duct mount Auto-Test Gas Generators Available for chlorine, ammonia, hydrogen sulfide, sulfur dioxide, and others. Digital Interface Upgrades Optional HART and Modbus interfaces for advanced integration and data transmission