{"schemaVersion":1,"slug":"iec-liquid-level-actuation-qualifier","name":"Liquid-level actuation qualifier","kind":"symbol","abbreviation":"Q021401","aliases":["Liquid-level actuation qualifier symbol","Q021401","Liquid-level actuation qualifier IEC reference"],"category":"control-circuits","drawingTypes":["Schematic"],"referenceFamilies":["IEC","Manufacturer"],"summary":"This qualifier identifies actuation responding to liquid level.","description":["This qualifier identifies actuation responding to liquid level. Level is the process condition that initiates operation. It should be distinguished from a drawing of the level instrument, the electrical output contact and the control action that follows.","In a generator fuel system, for example, a level input may participate in pump control or an alarm. The qualifier identifies the input principle while the cause-and-effect schedule states what happens."],"readingNotes":["State the sensed vessel or level point and the associated contact condition.","A level-actuation qualifier does not provide a setpoint or switch mounting height."],"drawingChecklist":["Identify the associated device, circuit or diagram boundary.","State the sensed vessel or level point and the associated contact condition.","Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form."],"distinction":"A level-actuation qualifier does not provide a setpoint or switch mounting height.","facts":[{"label":"Reference scope","value":"Specific public IEC-context family form"},{"label":"Publisher reference token","value":"Q021401 (Autodesk token; not a verified IEC database ID)"},{"label":"Information added","value":"State the sensed vessel or level point and the associated contact condition."},{"label":"Preview","value":"Independent educational concept; consult the publisher and applicable standard for the exact graphic"}],"references":[{"sourceId":"iec-public-operating","relevance":"Official public publisher family name and reference context; vendor identifiers and graphics are distinct from licensed IEC database content."}],"related":["relay-coil","normally-open-contact"],"artwork":"edu-iec-liquid-level-actuation-qualifier","publishedOn":"2026-10-14","updatedOn":"2026-10-14","provenance":"independent-public-research","symbolVariant":{"convention":"IEC","form":"Liquid-level actuation qualifier","reference":"Autodesk IEC-60617 Symbol Preview — Operating-device and function qualifiers; vendor family reference, not certified IEC geometry or database identifier."},"url":"https://eloragrid.ai/symbols/iec-liquid-level-actuation-qualifier","illustration":{"url":"https://eloragrid.ai/library/illustrations/iec-liquid-level-actuation-qualifier.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"iec-public-operating","title":"Autodesk IEC-60617 preview: Operating-device and function qualifiers","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-3598E18D-9F8A-48CE-83D0-4CEBA0AE869C.htm","type":"cad-reference","scope":"Public publisher IEC-context family names and vendor block references. No vendor images or CAD library files are reproduced, and vendor tokens are not presented as verified IEC database identifiers.","checkedOn":"2026-10-14","reuse":"link-only","relevance":"Official public publisher family name and reference context; vendor identifiers and graphics are distinct from licensed IEC database content."}]}