The Contrec 515-LP01 is a single arm load controller built for preset liquid product delivery, the kind of job you’d find on a truck, rail, or marine loading gantry. It reads a frequency signal from a volumetric or mass flowmeter, with custody-transfer grade pulse security, and can bring in temperature, density, and pressure inputs to correct the delivered volume against the ASTM D1250 standard.
What sets a loading controller like this apart from a plain batch controller is the safety and interlock side: it has a deadman timer with emergency stop output, permissive inputs for protective earthing and overfill detection, and error handling for no-flow, leakage, and overflow conditions that need an operator to acknowledge before the system continues. Access can be locked down to an ID-Pin or ID-Tag, so only an authorised driver or operator can start a load. It also runs a slow-start and pre-stop sequence on the delivery valve, either a digital control valve or a dual-stage arrangement, so the batch comes in accurately without a hard cutoff.
Before we quote this, we would normally confirm the flowmeter type and pulse output, whether earthing and overfill detection are already wired into the site’s loading gantry, and what access control method the customer wants. This is a safety-critical application, so we would always want to walk through the full interlock chain with the customer before finalising anything. Hope this helps.
