
SDT TRAPChecker: Focused Steam Trap Control Without Extra Complexity
Up to 40% of steam traps may be failed. TRAPChecker is SDT’s dedicated ultrasound tool with RS2 needle sensor: hear the cycle, see the OLED level, often pay back on the first survey.

Source. SDT Ultrasound TRAPChecker product and steam trap testing materials.
Purpose
Without diagnostics, steam systems bleed energy quietly — SDT cites up to 40% of traps in a failed state. TRAPChecker is built for one job: assess traps and valves via internal ultrasound turbulence.
Open the case, connect the RS2 Needle sensor, touch the body — hear healthy cycling vs blow-through on the OLED display.

When to choose what
| Scenario | Tool |
|---|---|
| Small fleet, traps only | TRAPChecker |
| Air leaks, lube, electrical + steam | SDT340 |
| Universal Checker | ULTRAChecker |
| Critical points 24/7 | Vigilant |
Cases: food CIP, 400+ campus survey. KEG TRK — application.
Equipment in this article
TRAPChecker - Steam Trap Testing
A specialised detector for testing steam-trap performance
SDT270 - Ultrasound Detector with Memory
Digital ultrasound detector with data recording and spectral analysis capability
SDT340 - Advanced Ultrasound Detector
The most advanced ultrasound detector for collecting, analysing and trending dat...
ULTRAChecker - Universal Ultrasound Detector
The universal Checker Range detector: one model for mechanical, leak, electrical...
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