45mm – Test Plug Thermometer – 130mm Back Stem

45mm Test Plug Thermometer with 130mm Extended Back Stem

Simplify on-site temperature diagnostics with our specialised 45mm Test Plug Thermometer. Purpose-built for commissioning engineers and balancing technicians, this pocket-sized dial indicator allows you to probe fluid temperatures directly through standard, self-sealing HVAC test plugs (binder points).

Equipped with a slender, robust 130mm back stem, this thermometer effortlessly penetrates deep insulation jackets and pipe lagging to reach the centre-stream fluid flow, providing highly stable, accurate readings without causing fluid leaks or system pressure drops.

Colour-Coded Scales for Fast On-Site Sorting

To prevent tool confusion during complex multi-pipe balancing tasks, this thermometer is available in two distinct, colour-coded temperature spans:

• -40°C to +70°C (Blue): Tailored specifically for chilled water networks, refrigeration plant rooms, and cooling loops.
• -10°C to +110°C (Red): Optimised for low-pressure hot water (LPHW) lines, boiler systems, heating loops, and hot water service pipework.

Key Benefits & Design Features

• Extended 130mm Immersion Stem: Long enough to clear heavy modern pipe insulation and safely seat within standard test points.
• High Mobility & Portability: The compact 45mm dial face makes it a perfect addition to any technician’s tool bag or pocket kit.
• Instant System Diagnostics: Eliminates the need to install permanent inline thermometers everywhere – simply slide the probe into an existing test plug for a live snapshot.
• Crisp Dual-Colour Markings: Highly visible pointers paired with bright background scales allow for instant, error-free verification under poor plant room lighting.