Field Instruments

Product Overview

The Fluke 773 Milliamp Process Clamp Meter is a powerful, all-in-one troubleshooting tool designed specifically for 4–20 mA process control systems. It allows technicians to measure, source, and simulate mA signals without breaking the loop, dramatically reducing downtime and eliminating the risk of interrupting critical processes.

Built for instrumentation and control professionals, the Fluke 773 goes beyond basic mA clamping by adding DC voltage measurement and sourcing, simultaneous mA in/out testing, and scaled mA output for logging and diagnostics. Whether commissioning, calibrating, or troubleshooting transmitters, valves, PLC I/O, or I/P devices, the Fluke 773 saves time while improving accuracy and safety.

Key Features

• Measure 4–20 mA Without Breaking the Loop – Clamp-on measurement saves time and avoids shutdowns
• mA Source & Simulate – Test control system I/O and field devices
• Simultaneous mA In/Out – Source a signal and measure output at the same time
• 24 V Loop Power – Power and test transmitters directly
• DC Voltage Measurement – Measure up to 30 V DC (verify 24 V supplies)
• DC Voltage Source – Output 0–10 V for testing voltage-input devices
• Scaled mA Output – Output a continuous mA signal proportional to measured loop current
• Ramp & 25% Step Output – Automatic signal stepping for remote testing
• Large Backlit Display – Clear readings in plant and panel environments
• Rugged Industrial Design – Built for daily process control work

Technical Specifications

Manufacturer: Fluke
Model: 773
Type: Milliamp Process Clamp Meter

Measurement & Source Functions

mA Measurement (Clamp Jaw)
• Range: 0 – 20.99 mA
• Extended range: 21.0 – 100.0 mA
• Accuracy:
– 0–20.99 mA: ±(0.2 % + 5 counts)
– 21–100 mA: ±(1 % + 5 counts)

mA Measurement (In-Circuit, Test Leads)
• Range: 0 – 24.00 mA
• Accuracy: ±(0.2 % + 2 counts)

mA Source
• Range: 0 – 24.00 mA
• Accuracy: ±(0.2 % + 2 counts)
• Max drive: 24 mA into 1000 Ω

mA Simulation
• Range: 0 – 24.00 mA
• Accuracy: ±(0.2 % + 2 counts)
• Max voltage: 50 V DC

DC Voltage Measurement
• Range: 0 – 30.00 V DC
• Accuracy: ±(0.2 % + 2 counts)

DC Voltage Source
• Range: 0 – 10.00 V DC
• Max drive current: 2 mA

Display & Construction

• Large digital LCD with backlight
• Ergonomic handheld design
• Clamp measurement immune to earth’s magnetic field (<0.12 mA)
• IP40 protection
• Designed for industrial process environments

Power Supply

• 4 × AA alkaline batteries
• Typical operating time: 12 hours (at 12 mA source into 500 Ω)
• Auto power-off and backlight timeout to conserve battery

Environmental Specifications

• Operating temperature: –10 °C to +50 °C
• Storage temperature: –25 °C to +60 °C
• Operating altitude: up to 2000 m

Applications

• Process control loop troubleshooting (4–20 mA)
• Transmitter installation and calibration
• PLC / DCS analog I/O testing
• Valve and actuator testing
• Commissioning and maintenance of instrumentation systems
• Power plant, water treatment, manufacturing, and oil & gas facilities

Why Buy from FieldInstruments.lk?

• 100% genuine Fluke instruments
• Competitive pricing with fast island-wide delivery
• Trusted supplier for professional process & electrical test tools
• Expert local technical support and after-sales service

Fieldinstruments.lk
50/3, Angampitiya Rd, Ethul Kotte, Sri Lanka. 10100.
Phone: +94718555888 Email: info@fieldinstruments.lk