RIS Rochester Instrument Systems SC-1302 Isolator Transmitter

The RIS SC-1302 Isolator Transmitter is a versatile signal conditioning device designed for industrial process control applications. Manufactured by Rochester Instrument Systems (now part of Ametek), this unit provides galvanic isolation between input and output signals, effectively eliminating ground loops and protecting sensitive equipment from electrical noise and surges. It supports multiple input types including 4-20 mA current loops, 1-5 VDC voltage signals, thermocouples (T/C), and RTDs, with corresponding output options in 4-20 mA or 1-5 VDC. Key features include adjustable zero and span settings for calibration, multi-voltage power supply compatibility (115 VAC, 230 VAC, or 24 VDC), and a compact DIN-rail mountable design suitable for control panels in manufacturing, oil and gas, or water treatment facilities. Advantages over similar products include its robust isolation (typically up to 1500 V), high accuracy (±0.1% of span), and reliability in harsh environments. Drawbacks may include the need for manual configuration and potential obsolescence due to the manufacturer's acquisition, making parts harder to source. Based on attached images, the unit appears used but in good condition, with no visible damage, and includes faceplate details like serial number 510517-1. Applications range from signal isolation in PLC systems to transmitter powering in remote monitoring setups. For detailed specs, refer to manufacturer datasheets (e.g., Ametek RIS legacy product guide PDF: https://www.ametek.com/-/media/ametek/files/products/process-instruments/legacy-ris/sc-1300-series-datasheet.pdf). Estimated market price for used units: $200-400 USD.