Fluke 712B RTD Temperature Calibrator

Fits field RTD and resistance calibration where you need to measure/source 13 RTD types plus resistance (0–4000 Ω classes) with a simultaneous isolated mA measure channel — companion to the 714B thermocouple calibrator, not a full documenting multi-function unit.

Key advantages

• 13 RTD types + ohms — measure/source RTD and 0–4000 Ω classes on one handheld.
• Isolated mA measure — simultaneous 0–24 mA class channel for transmitter loops.
• Ohms accuracy published — 0.015% + 0.05 Ω (0–400 Ω) / 0.015% + 0.5 Ω (400–4000 Ω).
• IP52 field kit — 4× AA; magnetic hanger; dual backlit inputs; −10…+50 °C operating.

Typical applications

• Field RTD and resistance calibration of temperature transmitters.
• Loop checks needing simultaneous isolated mA measure.
• Companion use with TC-focused 714B on the same cart.

Selection guide

• Measuring / source range — 13 RTD types + resistance measure/source (0–4000 Ω classes); simultaneous isolated mA measure 0–24 mA class.
• Accuracy — Ohms measure 0.015% + 0.05 Ω (0–400 Ω) / 0.015% + 0.5 Ω (400–4000 Ω); mA per OEM documentation; 1-year specs 18–28 °C.
• Output / channels — RTD / ohms source; simultaneous mA measure channel. Dual inputs, backlit display.
• Supply — 4× AA NEDA 1.5A IEC LR6.
• Electrical connection — RTD banana/mini; banana for mA.
• IP — IP52 (IEC 60529).
• Ambient — Operating −10…+50 °C; storage −30…+60 °C; operating altitude 2000 m.
• Mounting — Handheld; magnetic hanger included.
• Weight / size — 515 g; 52.5 × 84 × 188.5 mm (H×W×L).
• Approvals — IEC 61010-1; IEC 61326-1 Portable; MIL-T-28800E Class 2 vibration.

Common mistakes

• Expecting thermocouple source/measure — 712B is RTD/ohms focused; use 714B (or similar) for TC/mV.
• Using 1-year ohms accuracy outside 18–28 °C without checking extended ambient tables.
• Assuming the mA channel sources loop current — datasheet lists simultaneous isolated mA measure.
• Ignoring IP52 limits in wet or dusty plant areas beyond that rating.
• Ordering without confirming RTD wiring (2/3/4-wire) and connector set for your sensors.
• Calibration instruments · Calibration buying guide

When to RFQ / what to tell us

1. RTD types needed, ohms span class (0–400 vs 400–4000 Ω), and required tolerances.
2. mA measure need, ambient, and connector preferences (banana/mini).
3. Quantity, ship-to, and QA docs beyond the included traceable certificate.

Request a Quote · Get selection help

Specs

Documents

• Fluke 712B datasheet (PDF)

FAQ

Q: Does 712B do thermocouples? A: No — 712B is RTD/ohms with isolated mA measure. For TC/mV see 714B (shared datasheet family).

Q: What ohms accuracy should I plan for? A: 0.015% + 0.05 Ω (0–400 Ω) / 0.015% + 0.5 Ω (400–4000 Ω) at 1-year, 18–28 °C.

Q: What should I send for a quote? A: RTD types, ohms class, mA need, ambient, quantity. Compatible with systems using Fluke 712B — we do not claim authorized-dealer status.

Links

• Calibration instruments · Temperature calibrator buying guide
• Request a Quote · Get selection help