The Fluke 726 is a precision multifunction process calibrator designed specifically for the process industry, offering broad workload coverage and high accuracy. It measures and sources almost all process parameters, allowing professionals to test sensors, valves, and transmitters, and interpret results without the need for a separate calculator. It also stores up to eight calibration results in memory for later analysis .

This versatile calibrator measures volts, mA, pressure (with any of the 29 Fluke 750P series pressure modules), RTDs, thermocouples, frequency, and resistance . DC voltage measurement ranges from 0 to 30 V with 0.01% + 2 mV accuracy, while DC current source and simulate functions cover 0 to 24 mA with 0.01% + 2 μA accuracy . Resistance measurement is available from 0 to 4000 Ω with ±0.015% accuracy . Enhanced flowmeter testing is supported with frequency totalizer and pulse train source modes up to 15 kHz . A built-in 24V loop supply (22 mA maximum, short circuit protected) powers the transmitter during test .

The Fluke 726 includes a HART mode that utilizes a 250 Ω resistor for compatibility with HART instrumentation . It features auto step and auto ramp functions for fast linearity tests, with ramp options including slow ramp, fast ramp, and 25% step-ramp . An integrated switch test captures the set, reset, and deadband of a pressure switch. Temperature simulation supports 14 thermocouple types (J, K, T, E, R, S, B, L, U, N, XK, BP) with accuracy ranging from 0.4°C to 1.4°C depending on type, and multiple RTD types including Pt100 (385/392/391-JIS), Pt200, Pt500, Pt1000, Cu10, and Ni-120 .

The backlit display ensures visibility in low-light conditions, and the device features a rugged design with operating temperature range of -10°C to +55°C . It operates on 4 AA alkaline batteries with separate battery compartment accessible without breaking the calibration seal . Dimensions are 200 x 96 x 47 mm (7.9 x 3.8 x 1.9 in) and weight is 650 g (23 oz) . It comes with NIST-traceable calibration report and data, test leads, stackable test leads, alligator clips, and is backed by a 3-year warranty .