A Complete Field Calibration Tool for Process Engineers
The Fluke 725 Multifunction Process Calibrator is designed for instrumentation engineers and maintenance technicians who need a reliable solution for calibrating and troubleshooting process instruments in the field.
Unlike single-function testers, the Fluke 725 combines measurement and signal generation capabilities in one handheld device. It can test sensors, simulate transmitter outputs, verify control loops, and perform calibration tasks without requiring multiple separate instruments.
It is widely used for maintaining:
Pressure transmitters
Temperature transmitters
Flow meters
Control valves
PLC analog signal systems
Measure and Source Multiple Process Signals
Modern industrial systems rely on different types of measurement signals. The Fluke 725 supports a wide range of electrical and process parameters, allowing technicians to test both field devices and control systems.
It can measure and source:
DC voltage
DC current (mA)
Resistance
Frequency
RTD signals
Thermocouple signals
Pressure (with compatible pressure modules)
This multifunction capability allows engineers to handle different calibration tasks with a single portable instrument.
Simplified Transmitter Calibration
Process transmitters are critical components in industrial automation systems, but diagnosing signal problems often requires checking both the instrument output and the control system input.
The Fluke 725 helps technicians:
Simulate transmitter output signals
Measure transmitter response
Verify 4-20 mA loops
Test sensor inputs
Confirm PLC/DCS signal performance
For pressure applications, the calibrator can work with Fluke 700P Series Pressure Modules to test pressure transmitters and pressure-related instruments.
Built-In 24 V Loop Power for Field Testing
Many process transmitters require external power during troubleshooting.
The Fluke 725 includes a built-in 24 V loop power supply, allowing technicians to power transmitters while measuring their output current.
This is especially useful when testing:
Newly installed transmitters
Removed field instruments
Suspected faulty control loops
The integrated loop supply reduces the need to carry additional power equipment during field maintenance.
Dual Display for Faster Troubleshooting
During calibration, engineers often need to compare the generated signal with the measured response.
The Fluke 725 features a split-screen display that allows users to view measurement and sourcing information simultaneously.
This makes it easier to:
Adjust transmitter output
Verify signal changes
Perform calibration checks
Identify loop problems quickly
Temperature Calibration Capability
Temperature measurement plays an important role in many industrial processes.
The Fluke 725 supports testing and simulation of:
RTD temperature sensors
Thermocouples
Temperature transmitters
This makes it suitable for applications involving:
Process temperature monitoring
Heating systems
Industrial production equipment
Pressure Calibration with External Modules
The Fluke 725 itself is not an internal pressure pump calibrator, but it can be expanded with compatible pressure modules.
Using Fluke 700P Series Pressure Modules, technicians can perform:
Pressure transmitter verification
Differential pressure testing
Gauge pressure measurement
Absolute pressure measurement
This modular design allows users to select pressure ranges according to different applications.
Automatic Step and Ramp Functions
Calibration often requires checking transmitter performance across multiple output points.
The Fluke 725 provides:
Auto step testing
Auto ramp testing
Stored calibration setups
These functions help technicians perform repeatable tests and quickly verify transmitter linearity.
Rugged Design for Industrial Environments
The Fluke 725 is designed for field technicians working in demanding industrial conditions.
Key advantages include:
Compact handheld design
Backlit display for low-light environments
Simple button operation
Battery-powered operation
Rugged construction for field use
Its straightforward interface allows technicians to begin testing without navigating complicated menus.
Typical Applications
Pressure Transmitter Calibration
Used for checking:
Differential pressure transmitters
Gauge pressure transmitters
Pressure measurement loops
Temperature Instrument Testing
Suitable for:
RTD sensors
Thermocouple transmitters
Temperature control systems
Flow Measurement Maintenance
Can support troubleshooting of:
Flow transmitters
Frequency output devices
Pulse-based flow instruments
Industrial Automation Systems
Commonly used for:
PLC analog input testing
DCS loop verification
Control valve troubleshooting
4-20 mA signal testing
FAQ
What is the Fluke 725 Multifunction Process Calibrator?
The Fluke 725 is a handheld process calibrator designed to measure and source electrical and process signals for testing industrial transmitters and sensors.
What can Fluke 725 calibrate?
It can calibrate and test:
Pressure transmitters (with pressure modules)
Temperature transmitters
Current loops
Voltage signals
Frequency devices
Resistance-based sensors
Does Fluke 725 provide loop power?
Yes. It includes a built-in 24 V loop power supply for powering transmitters during testing.
Can Fluke 725 calibrate pressure transmitters?
Yes. When combined with compatible Fluke 700P pressure modules, it can measure and calibrate pressure transmitters.
What is the difference between Fluke 725 and Fluke 753?
Fluke 725 focuses on multifunction field calibration and troubleshooting, while Fluke 753 adds documenting calibration capabilities for recording and managing calibration results.
Is Fluke 725 suitable for industrial use?
Yes. It is designed for process technicians working in industries such as oil & gas, chemical, power generation, and manufacturing.
