Sampling Controller

The Sampling Controller is the core electronic component of a Data Sampler that precisely regulates when, how often, and under what conditions samples are collected from a production line or process stream. It receives input signals from sensors or operators, executes programmed sampling protocols, and coordinates with mechanical actuators to initiate sample collection sequences. The controller is designed for integration into machinery and equipment manufacturing applications where automated sampling is required. It features a rated voltage of 24 V DC (±10%) with reverse polarity protection, and consumes no more than 5 W at rated voltage with no load. The number of channels is configurable per model, ranging from 4 to 16, allowing adaptation to various sampling points. Sampling frequency is adjustable in steps of 1 Hz within a range of 1 to 1000 Hz, and sampling accuracy is ±0.1% of full scale at 25 °C. The input signal range is 4–20 mA and is HART compatible. The controller operates within a temperature range of -40 to 85 °C (non-condensing) for both operating and storage conditions, and relative humidity of 5–95% non-condensing. The enclosure is rated IP65 per IEC 60529, providing dust-tight and water jet protection, and is made of stainless steel 316L per ASTM A240. Depending on the channel count, the weight ranges from 1.2 to 2.5 kg, and the base model dimensions are 120×80×60 mm (W×H×D). The controller is housed in a plastic or metal housing and contains a printed circuit board with electronic components such as ICs, resistors, and capacitors. For specific applications, verify model-specific values and standards with the legal manufacturer or supplier.

The controller operates by receiving external triggers (time-based, event-based, or manual) and processing them through embedded logic circuits or microprocessors. It then sends control signals to electromechanical components (like valves, actuators, or robotic arms) to execute the sampling sequence. Feedback mechanisms ensure proper execution and may trigger alarms or adjustments if sampling parameters deviate from setpoints.