Anderson Instrument Co. CT-1 Temperature Transmitter

The Anderson Instrument Co. CT-1 Temperature Transmitter is a compact, two‑wire, loop‑powered device that converts a temperature signal into a standard 4‑20 mA output for industrial controllers. It operates from a 24 V DC supply in a two‑wire configuration, allowing power and signal to ride on a single pair for simple field installation. In verified listings, CT‑1 variants such as CT‑1‑561010119F provide a 4‑20 mA output over a temperature range of 30 to 230 °F (approximately -1 to 110 °C), making it suitable for direct connection to PLCs, DCS, or process indicators without a separate transmitter supply. The CT‑1 designation is part of Anderson Instrument Co.’s legacy temperature transmitter line, a lineage now associated with Anderson‑Negele, a brand known for analog temperature transmitters and modular sensing solutions. This model is designed for industrial temperature monitoring where a robust, loop‑powered current signal supports reliable remote sensing across longer cable runs and multiple instruments in a control loop. While variations exist within the CT‑1 family, the validated specifications above are the most commonly cataloged for the CT‑1 transmitter, and the product is frequently encountered in distributor listings and online marketplaces under the Anderson‑Negele umbrella.