
Fieldpiece SPK3 — a compact, multi-function 2-in-1 pocket thermometer designed for fast, convenient diagnostics on HVAC/R systems. Applications Supply and return air temperature measurement directly inside ductwork Temperature differential (ΔT / T1-T2)...
Fieldpiece SPK3 — a compact, multi-function 2-in-1 pocket thermometer designed for fast, convenient diagnostics on HVAC/R systems. Applications Supply and return air temperature measurement directly inside ductwork Temperature differential (ΔT / T1-T2) monitoring across evaporators, condensers, and heat exchangers Non-contact surface temperature measurement of supply grilles, pipes/pipework, and other surfaces Quick verification of air heater performance and refrigeration system operation Key features 94 mm needle probe (ROD) — sharp, narrow tip for easy insertion through standard test ports in ductwork. Non-contact IR pyrometer with 8:1 optics — instant (0.5 s) safe surface temperature readings from a distance. Automatic T1-T2 differential calculation — continuously displays temperature difference (e.g. IR vs. ROD, ROD vs. ROD, or IR vs. IR). Retractable hands-free hook — lets you hang the thermometer on a duct edge for stable, unattended duct measurements. Backlit rotating display — auto or manual orientation adjustment for clear readings at any angle. Exceptional battery life — up to 750 hours continuous use with the needle probe (ROD), up to 40 hours in IR mode. Technical data Parameter Value Needle probe (ROD) — Measurement range -40°C to 125°C (-40°F to 257°F) Needle probe (ROD) — Accuracy ±0.5°C (0°C to 50°C), ±1.0°C outside that range Needle probe (ROD) — Resolution 0.1°C / 0.1°F Needle probe (ROD) — Probe length 94 mm (~3.75") Needle probe (ROD) — Response time 20 s IR measurement — Measurement range -30°C to 500°C (-20°F to 932°F) IR measurement — Accuracy ±1.0°C (10°C to 40°C), ±1.5°C or 1.5% of reading (above 40°C) IR measurement — Optics (D:S) 8:1 IR measurement — Emissivity Fixed (E = 0.95) IR measurement — Response time 0.5 s Auto power off After 3 minutes idle (15 minutes in T1-T2 mode) Power supply 2 × AAA alkaline batteries (included) Battery life ~750 hours (ROD) / ~40 hours (IR) Operating conditions 0°C to 40°C (humidity <90% RH) Set contents Fieldpiece SPK3 2-in-1 pocket thermometer 2 × AAA alkaline batteries (installed)