diff --git a/src/specificClass.js b/src/specificClass.js
index c2b5768..7852022 100644
--- a/src/specificClass.js
+++ b/src/specificClass.js
@@ -18,13 +18,19 @@ class PumpingStation extends BaseDomain {
   static name = 'pumpingStation';
 
   // Internal math runs in m3/s for flow and m for level so the volume
-  // integrator (flow × dt) is unit-consistent. Strict canonicals make
-  // unit drift in child-fed measurements an explicit error.
+  // integrator (flow × dt) is unit-consistent — canonical stays m3/s, the
+  // platform-wide convention every cross-node consumer (MGC demand math,
+  // physics-sanity) assumes. Strict canonicals make unit drift in child-fed
+  // measurements an explicit error.
+  // Output flow / netFlowRate are emitted in m3/h so telemetry/dashboard
+  // series land on the same axis as the rest of the pump group (verified
+  // slice #47); the m3/s→m3/h presentation conversion happens at the output
+  // boundary only — it never touches the canonical integrator basis.
   // overflowVolume / underflowVolume are listed in output so the
   // MeasurementContainer keeps the integrator's m³ unit on those streams
   // (FlowAggregator writes spill / underflow per tick).
   static unitPolicy = UnitPolicy.declare({
-    canonical: { flow: 'm3/h', pressure: 'Pa', power: 'W', temperature: 'K' },
+    canonical: { flow: 'm3/s', pressure: 'Pa', power: 'W', temperature: 'K' },
     output:    {
       flow: 'm3/h', netFlowRate: 'm3/h', level: 'm', volume: 'm3',
       overflowVolume: 'm3', underflowVolume: 'm3',