Vigilant: Permanent Ultrasonic Monitoring of Steam Traps and Valves

Source. SDT Ultrasound materials on Vigilant and steam trap/valve failure prevention.

Why routes alone are not enough

Up to 30% of traps may be failed at any time. A ~3 mm leak can waste €6,000+ per year. Route surveys with SDT340 cover the fleet; the most critical 5–10% stay blind between rounds.

What Vigilant does

Vigilant provides up to 8 channels of ultrasound/vibration plus process inputs. A contact sensor on a trap or valve flags blow-through or blockage in real time.

European plant case

In the first six months:

• −25% steam losses;
• €120,000 annual energy savings;
• fewer emergency interventions.

Mobile ultrasound remains for the rest of the fleet. KEG TRK — contact.