The XK3190-C8+ is a digital weighing indicator-controller from Shanghai Yaohua Weighing System Co., Ltd., designed for electronic batching scales, checkweighers, fixed-value packing scales, and industrial process weighing. It uses 24-bit Sigma-Delta A/D conversion at 80 readings per second with 5-point nonlinearity correction, achieving up to 1/30,000 readability and OIML Class III compliance at 3,000 divisions.

How does batching and checkweighing control work?

The controller supports 1–2 material batching in addition and subtraction modes, with 3 built-in relay outputs (AC 220V, 0.5A) and 3 opto-isolated switch inputs for external start/stop control. Checkweighing modes include external setpoint, self-test, and free-limit comparison with high/low alarm outputs. An isolated analogue output is configurable for 4–20 mA, 0–20 mA, 0–5 V, or 0–10 V with adjustable scaling. Weight totals and count data are stored in non-volatile memory with power-failure protection, and a real-time clock enables date-stamped print records via serial printer.

What communication and display features are included?

Standard serial interfaces (RS-232, RS-422, RS-485) support configurable baud rates and protocols for integration with PLCs, DCS, and SCADA systems. A 20 mA current loop output drives remote large displays. The front panel features a 7-segment red LED display with 11 status indicators and 5 tactile push buttons. The panel-mount enclosure measures 207 × 108 × 210 mm and accepts 110–230 VAC power. Excitation voltage of 5 VDC at 350 mA drives up to 8 load cells with 6-wire connection for automatic cable-length compensation.