Coil
Relay coil
The operating element associated with a relay and its separately drawn contacts.
Schematic
IEC · Q021404
Gas-flow actuation qualifier
A gas-flow qualifier identifies operation responding to gas movement.
IEC · Gas-flow actuation qualifier
Autodesk IEC-60617 Symbol Preview — Operating-device and function qualifiers; vendor family reference, not certified IEC geometry or database identifier.
Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.
Schematic · Q021404
What it represents
A gas-flow qualifier identifies operation responding to gas movement. Gas-flow actuation identifies the moving-gas condition used by the device. It is not equivalent to a static pressure condition, even where both participate in one ventilation or process sequence.
Document the monitored path and the resulting electrical input. A separate description is needed for any alarm delay, operating threshold or fan permissive.
How to read it
- Distinguish the gas process from any adjacent liquid-flow or pressure measurement.
- Gas flow and gas pressure are different process quantities.
Information to show or reference
- Identify the associated device, circuit or diagram boundary.
- Distinguish the gas process from any adjacent liquid-flow or pressure measurement.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.
A distinction that matters
Gas flow and gas pressure are different process quantities.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Autodesk IEC-60617 preview: Operating-device and function qualifiers
Official public publisher family name and reference context; vendor identifiers and graphics are distinct from licensed IEC database content.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
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