{"product_id":"samwontech-nova-st540-temperature-controller","title":"Samwontech Nova ST540 Temperature Controller","description":"\u003cdiv\u003e\u003cp\u003eThe Samwontech Nova ST540 Temperature Controller is a high‑accuracy universal controller in the NOVA500 ST Series, built for precise PID control of heating and cooling processes in industrial equipment. It features an 18‑bit A\/D converter with an accuracy of ±0.1% of full scale and a 250 ms sampling time, supporting four programmable setpoints (SP1–SP4) and both normal and heating\/cooling control modes. The ST540 uses a single universal input that accepts thermocouples (K, J, E, T, R, B, S, L, N, U, W, Platinel II) or RTD\/ resistance sensors (PT100 IEC, JPT100 JIS), with flexible analog input ranges including -10 to 20 mV, 0 to 100 mV, 0.4 to 2.0 V, 1 to 5 V, 0 to 10 V, and 4–20 mA\/0–20 mA options (external resistance 250 Ω or 500 Ω attached). Output architecture provides two universal outputs for control and retransmission (PV, SP, MV) or loop power, plus a 12 V DC supply for auxiliary circuitry. The device also supports an alarm feature (heater break alarm) and RUN\/STOP along with SP selection for easy operation in the field. Communications include PC‑Link, PC‑Link with Checksum, Modbus ASCII\/RTU, and Sync Master\/Slave up to 19.2 kbps, enabling integration with PLCs and supervision systems. Powering the ST540 is 100–240 V AC, 50\/60 Hz, with a maximum draw around 10 VA. The compact front‑panel measures 48 × 48 × 78 mm (W × H × D), making it suitable for tight control panels in furnaces, ovens, reactors, and other process environments that demand reliable, high‑precision temperature regulation.\u003c\/p\u003e\u003c\/div\u003e","brand":"SAMWONTECH","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":46284082577642,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-022.png?v=1788727428","url":"https:\/\/gtghardware.com\/products\/samwontech-nova-st540-temperature-controller","provider":"GTG Hardware","version":"1.0","type":"link"}