Therma Differential Two Channel Differential Thermometer

The ETI Therma Differential is a rugged, dual-input Type K thermocouple thermometer designed for professionals in HVAC, plumbing, and industrial diagnostics. It lets users connect two probes simultaneously to measure either individual temperatures or the differential (T1–T2)—ideal for tasks like radiator balancing or monitoring temperature change across systems.

Built in the UK with an IP66/67-rated waterproof ABS case featuring Polygiene Biomaster antimicrobial protection, the Therma Differential offers precision, durability, and simplicity in one compact package.

Sold excluding probes.

Key Features:

• Dual-Channel Input (Type K Thermocouple): Simultaneously measures T1, T2, or the difference T1–T2.

• Wide Temperature Range & Resolution: From –99.9 °C to 299.9 °C at 0.1 °C resolution; above 300 °C up to 1,372 °C at 1 °C resolution.

• High Accuracy: ±0.4 °C ± 0.1% of reading for reliable results.

• User-Friendly Display & Controls: 15 mm custom LCD with Celsius mode, T1/T2/diff display, hold, open-circuit and low-battery alerts, Max/Min, and optional backlight.

• Long Battery Life with Auto-Off: Powered by 3 × AAA batteries (~7,500 hours battery life); auto-off engaged after ~10 minutes to conserve power.

• Rugged & Hygienic Design: ABS casing with integrated rubber seal, IP66/67-rated protection, and Biomaster antimicrobial additive.

• Compact & Lightweight: Measures 32 × 71 × 141 mm, weighs approximately 220 g—comfortable for one-handed use.

• UK Made with Calibration Included: Supplied with a free traceable calibration certificate and backed by a two-year guarantee.

• Ideal for HVAC and Radiator Balancing: Quickly identifies temperature differences across systems for effective diagnostics and balancing tasks.