Two Essential Tools Combined into One

The Fluke 787B ProcessMeter™ combines the functions of a professional digital multimeter and a 4-20 mA loop calibrator, helping instrumentation and electrical technicians reduce the number of tools needed for field troubleshooting.

In industrial automation systems, technicians often need to check both electrical conditions and analog control signals. A standard multimeter can measure voltage and current, but it cannot generate or simulate transmitter signals. A dedicated loop calibrator can test mA signals but cannot replace a full electrical tester.

The Fluke 787B bridges this gap by combining both functions into a single rugged handheld instrument.

Complete 4-20 mA Loop Testing Capability

The majority of industrial transmitters use 4-20 mA current loops to transmit measurement signals to PLC, DCS, and control systems.

The Fluke 787B allows technicians to:

• 
  Measure loop current
  
• 
  Source 0-20 mA or 4-20 mA signals
  
• 
  Simulate transmitter output
  
• 
  Verify analog input response
  
• 
  Troubleshoot control loop problems
  

With accurate mA measurement and sourcing capability, it is suitable for testing:

• 
  Pressure transmitters
  
• 
  Temperature transmitters
  
• 
  Flow transmitters
  
• 
  Level transmitters
  
• 
  Control valves

Precision Digital Multimeter Functions

Besides loop calibration, the Fluke 787B works as a full-featured True-RMS digital multimeter based on Fluke's trusted industrial measurement technology.

It provides measurement functions including:

• 
  AC/DC voltage
  
• 
  AC/DC current
  
• 
  Resistance
  
• 
  Frequency
  
• 
  Continuity
  
• 
  Diode testing
  

The meter supports voltage measurements up to 1000 V and is designed to meet CAT III 1000 V and CAT IV 600 V safety standards, making it suitable for demanding industrial environments.

Faster Troubleshooting with Dual Display

During loop testing, technicians often need to compare the actual measured current with the expected controller value.

The Fluke 787B can display:

• 
  mA measurement value
  
• 
  Percentage of scale
  

at the same time, allowing engineers to quickly identify signal deviations and verify transmitter performance.

Manual and Automatic mA Adjustment Functions

The Fluke 787B provides flexible output adjustment methods for calibration and troubleshooting.

Technicians can use:

• 
  Manual coarse adjustment
  
• 
  Fine adjustment
  
• 
  25% and 100% step functions
  
• 
  Automatic step output
  
• 
  Automatic ramp output
  

These functions help simplify transmitter simulation and control system testing.

Designed for Industrial Instrumentation Applications

The Fluke 787B is especially suitable for technicians responsible for maintaining process measurement systems.

Typical applications include:

Pressure Transmitter Testing

Used for checking:

• 
  Pressure transmitter mA output
  
• 
  Loop wiring
  
• 
  Analog input signals
  

Temperature Measurement Systems

Suitable for troubleshooting:

• 
  Temperature transmitters
  
• 
  Sensor signal loops
  
• 
  Process monitoring systems
  

Automation and Control Systems

Useful for:

• 
  PLC analog input verification
  
• 
  DCS loop testing
  
• 
  Control valve troubleshooting
  
• 
  Industrial equipment maintenance
  

Optional Wireless Data Logging with Fluke Connect™

When combined with the optional Fluke IR3000FC connector, the Fluke 787B can work with Fluke Connect® for wireless data logging and sharing.

This allows technicians to:

• 
  Monitor measurements remotely
  
• 
  Record field data
  
• 
  Share troubleshooting information with teams

Rugged Handheld Design for Field Technicians

The Fluke 787B is designed for technicians who need reliable performance in industrial environments.

Key advantages include:

• 
  Compact handheld construction
  
• 
  Backlit display
  
• 
  Easy-to-access battery compartment
  
• 
  Rugged Fluke design
  
• 
  Long battery operation
  

It provides professional measurement and loop calibration capability without requiring multiple separate instruments.

FAQ

What is the Fluke 787B ProcessMeter?

The Fluke 787B is a combined digital multimeter and mA loop calibrator designed for troubleshooting and calibrating industrial current loop applications.

What is the difference between Fluke 787B and Fluke 789?

Both products combine a digital multimeter with a mA loop calibrator.

The main difference is:

• 
  Fluke 787B: focuses on mA measurement, sourcing, simulation, and electrical troubleshooting.
  
• 
  Fluke 789: adds a built-in 24 V loop power supply and additional loop troubleshooting capability.

Can Fluke 787B calibrate 4-20 mA transmitters?

Yes. It can measure, source, and simulate 4-20 mA signals for transmitter testing and control loop verification.

Can Fluke 787B replace a normal multimeter?

Yes. It includes full digital multimeter functions such as voltage, current, resistance, frequency, continuity, and diode testing.

Is Fluke 787B suitable for pressure transmitter testing?

Yes. It can verify the electrical output signal of pressure transmitters. For complete pressure calibration, it can be combined with appropriate pressure generation and measurement equipment.

Is Fluke 787B suitable for industrial use?

Yes. With CAT III 1000 V / CAT IV 600 V safety ratings and rugged handheld construction, it is designed for industrial troubleshooting and maintenance applications.