Fluke 725 Multifunction Process Calibrator

The Fluke 725 Multifunction Process Calibrator gives engineers and technicians a fast way to test, check, and simulate process signals in the field. It handles mA, volts, resistance, frequency, pressure, RTDs, and thermocouples, so one unit can cover many daily jobs.

Built for plant and site work, WFluke 725 helps you move from one task to the next with less setup time. Its simple controls and backlit display keep operation clear, while the compact body and rugged design suit harsh working areas.

Built for process testing

During loop checks, the unit can power a transmitter with its 24 V loop supply and read mA at the same time. As a result, you can test a transmitter in place and reduce the need for extra tools. WFluke 725 also supports fast pulsed RTD transmitters and PLC checks with pulses as short as 10 ms.

For valve and I/P work, it can source mA while reading pressure when used with optional 750P pressure modules. It also handles flow meter tasks with frequency and CPM functions, and then speeds linearity checks with auto-step and auto-ramp modes.

Strong measurement coverage

Accuracy is suited to demanding service work. DC voltage measurement reaches 30.000 V with 0.02% + 2 counts accuracy, DC current measurement reaches 24.000 mA with 0.02% + 2 counts accuracy, and pressure accuracy can be as good as 0.025% of range with supported modules.

Temperature work is also broad, with RTD types such as NI-120, PT-100, PT-200, PT-500, and PT-1000, plus thermocouple types J, K, T, E, R, S, B, L, U, N, XK, and BP. WFluke 725 stores and recalls common calibration setups, which helps speed repeat jobs and keeps work more consistent across shifts.

Key Features

Measures and sources mA, DC volts, resistance, frequency, RTDs, and thermocouples
Calibrates both temperature transmitters and pressure transmitters in one handheld unit
Provides 24 V loop power for transmitter testing during live mA measurement
Tests transmitters out of circuit with source and measure functions in the same instrument
Supports optional 750P pressure modules for field pressure work
Runs auto-step and auto-ramp functions for quicker loop and linearity checks
Checks flow devices with frequency and CPM functions
Handles fast pulsed RTD transmitters and PLC pulse signals down to 10 ms
Stores and recalls frequently used calibration set ups
Uses simple controls for quick operation in the field
Includes a backlit display for better viewing in low light
Has a compact and rugged build for harsh site conditions

Document Downloads

Fluke 725 Multifunction Process Calibrator - Datasheet (Size: 86 KB)

Fluke 725 Multifunction Process Calibrator - User Manual (Size: 1 MB)

What’s Included

Fluke 725 Multifunction Process Calibrator

Manufacturer	Fluke
Part Number	664133
Instrument type	Multifunction process calibrator
Primary functions	Measure and source mA, DC volts, resistance, frequency, temperature, and pressure with optional modules
DC voltage measurement range	30.000 V upper display, 30.000 V lower display, 100.00 mV, and -10.00 mV to 75.00 mV via TC connector
DC voltage measurement accuracy	0.02% + 2 counts for 30.000 V and 100.00 mV ranges, 0.025% + 1 count via TC connector
DC current measurement range	24.000 mA
DC current measurement accuracy	0.02% + 2 counts
Resistance measurement ranges	0.0 to 400.0 Ω, 401 to 1500 Ω, 1500 to 3200 Ω
Resistance measurement accuracy	0.1 Ω 4-wire and 0.15 Ω 2-wire and 3-wire up to 400.0 Ω, 0.5 Ω 4-wire and 1 Ω 2-wire and 3-wire from 401 to 1500 Ω, 1 Ω 4-wire and 1.5 Ω 2-wire and 3-wire from 1500 to 3200 Ω
Frequency measurement ranges	2.0 to 1000.0 CPM, 1.0 to 1100.0 Hz, 1.00 to 10.00 kHz
Frequency measurement accuracy	0.05% + 1 count
Frequency sensitivity	1 V peak-to-peak minimum
Pressure capability	Works with Fluke 750P pressure modules for differential, gauge, vacuum, absolute, dual, and high pressure measurement
Pressure accuracy	From 0.025% of range depending on module used
DC voltage source ranges	100.00 mV, 10.000 V, and -10.00 mV to 75.00 mV via TC connector
DC voltage source accuracy	0.02% + 2 counts for 100.00 mV and 10.000 V, 0.025% + 1 count via TC connector
DC current source ranges	24.000 mA source and 24.000 mA simulate
DC current source accuracy	0.02% + 2 counts
Resistance source ranges	15.0 to 400.0 Ω, 401 to 1500 Ω, 1500 to 3200 Ω
Resistance source accuracy	0.15 Ω with excitation current 0.15 to 0.5 mA, 0.1 Ω with excitation current 0.5 to 2 mA, 0.5 Ω with excitation current 0.05 to 0.8 mA, and 1 Ω with excitation current 0.05 to 0.4 mA
Frequency source ranges	2 to 1000.0 CPM, 1.0 to 1100.0 Hz, 1.00 to 10.00 kHz
Frequency source accuracy	0.05% for CPM and Hz, 0.25% for 1.00 to 10.00 kHz
Frequency waveform	5 V p-p squarewave, -0.1 V offset
RTD types supported	NI-120, PT-100 385, PT-100 393, PT-100 JIS, PT-200 385, PT-500 385, PT-1000 385
RTD accuracy	Measure and source accuracy from 0.2°C to 0.33°C depending on RTD type, with 0.1°C resolution
Thermocouple types supported	J, K, T, E, R, S, B, L, U, N, XK, BP
Thermocouple accuracy	Measure accuracy from 0.6°C to 1.8°C depending on type, source accuracy from 0.6°C to 1.5°C depending on type
Thermocouple resolution	J, K, T, E, L, N, U at 0.1°C and 0.1°F, B, R, S at 1°C and 1°F
Ramp functions	Slow ramp, fast ramp, and 25% step-ramp for voltage, current, resistance, frequency, and temperature
Loop power function	24 V loop supply
Loop power accuracy	10%
Maximum loop current	22 mA, short circuit protected
Step functions	25% of range and 100% of range for voltage, current, resistance, frequency, and temperature
Operating temperature	-10°C to +55°C
Storage temperature	-20°C to 71°C
Operating altitude	3000 m
Agency approvals	EN 61010-1:1993, ANSI/ISA S82.01-1994, CAN/CSA C22.2 No 1010.1:1992
Size	130 x 236 x 61 mm
Weight	0.65 kg
Battery type	4 AA alkaline batteries
Battery access	Separate battery compartment, accessible without breaking calibration seal
Side port connections	Pressure module connector, also used for remote real-time programming
Warranty	Not provided in the supplied data
Model Number	FLUKE-725 US

Function	Measure capability	Measure accuracy	Source capability	Source accuracy
Voltage DC	30.000 V, 100.00 mV, -10.00 mV to 75.00 mV via TC connector	0.02% + 2 counts, or 0.025% + 1 count via TC connector	100.00 mV, 10.000 V, -10.00 mV to 75.00 mV via TC connector	0.02% + 2 counts, or 0.025% + 1 count via TC connector
Current DC	24.000 mA	0.02% + 2 counts	24.000 mA source and 24.000 mA simulate	0.02% + 2 counts
Resistance	0.0 to 3200 Ω	0.1 Ω to 1.5 Ω depending on range and wire mode	15.0 to 3200 Ω	0.1 Ω to 1 Ω depending on range and excitation current
Frequency	2.0 to 1000.0 CPM, 1.0 to 1100.0 Hz, 1.00 to 10.00 kHz	0.05% + 1 count	2 to 1000.0 CPM, 1.0 to 1100.0 Hz, 1.00 to 10.00 kHz	0.05% for CPM and Hz, 0.25% for kHz
Pressure	With optional 750P modules	From 0.025% of range	Not stated	Not stated
RTDs	NI-120, PT-100, PT-200, PT-500, PT-1000 families shown	0.2°C to 0.33°C, 0.1°C resolution	Same RTD families shown	0.2°C to 0.33°C, 0.1°C resolution
Thermocouples	J, K, T, E, R, S, B, L, U, N, XK, BP	0.6°C to 1.8°C depending on type	J, K, T, E, R, S, B, L, U, N, XK, BP	0.6°C to 1.5°C depending on type
Loop power	24 V loop supply with live mA measurement	10% loop supply accuracy	24 V loop supply	Maximum 22 mA, short circuit protected

Fluke 725 Multifunction Process Calibrator