What is the ETI 271-3003 3000 Series Dry-Well Heat Source Calibrator?
The ETI 271-3003 3000 Series Dry-Well Heat Source Calibrator is a compact temperature calibration tool designed for UK electricians, HVAC engineers and service technicians who need simple, reliable verification of temperature probes and digital thermometers. With a temperature range from 33°C to 250°C, this dry-well calibrator provides a stable heat source that makes it easy to compare your instrument’s reading to a known reference without the hassle of liquid baths or complex setups.
Ideal for workshop use or on-site checks, the 271-3003 lets you set a target temperature using the front panel controls and insert your probe into the well that matches its diameter. Once the temperature stabilises, you can quickly assess any measurement error and carry out routine calibration checks as part of HVAC commissioning, plant maintenance or electrical inspection workflows, all with a compact, plug-in unit that’s ready when you are.
Which probes does the 271-3003 support?
The 271-3003 model is designed for larger diameter probes, accepting Ø4.76 mm and 12.7 mm sizes. This makes it particularly well suited to industrial sensors, heavy-duty thermocouples and thicker probes often used in plant, process and equipment monitoring. By matching your probe diameter to the correct dry-well model, you ensure a secure fit, accurate heat transfer and consistent calibration results without adapters or workarounds.
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Why choose Instrotech for your electrical test equipment?
With over 40 years’ experience supporting UK electricians, technicians and engineers, Instrotech is your trusted partner for quality tools and expert service. When you purchase from us, you benefit from:
Free UK shipping on orders over £99
Access to our knowledgeable technical support team
Available calibration services to maintain safety compliance
A 90-day money-back guarantee for complete peace of mind
We’re committed to helping you work safely and efficiently with industry-leading products and ongoing support.
