FLUKE 773 Milliamp Process Clamp Meter
- Measure 4 to 20 mA signals without breaking the loop
- Source/simulate 4 to 20 mA signals and provide loop power
- Source/measure DC voltage to verify power supplies or I/O signals
- Best in class accuracy of 0.2%
- Delivers 0.01 mA resolution and sensitivity
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Milliamp mA Loop CalibratorsFLUKE 771 Milliamp Process Clamp Meter
Save time by measuring 4-20 mA signals without breaking the loop
The Fluke 771 delivers all the basic functionality you would expect in a milliamp clamp meter. It measures 4-20 mA signals without “breaking the loop,” allowing you to measure low level DC current without having to take systems offline for troubleshooting, saving downtime and money. You can also use it to measure output signals from transmitters without breaking the loop when maintaining and troubleshooting process and automation equipment. This saves time and avoids disrupting critical processes so you can avoid expensive downtime. You can also measure 10 to 50 mA signals in older control systems using the 99.9 mA range.
Added convenience
Designed to make troubleshooting easier, the Fluke 771 includes a detachable clamp that can be attached to the wire you’re testing while you move the meter—connected by the extension cable—to a better viewing position. This is especially helpful for taking readings in tight locations. With the dual backlit display showing both the mA measurement and the percent of a 4 to 20 mA span you can quickly understand what your system is doing, and a built-in LED spotlight lets you illuminate hard to see wire in dark enclosures. You can also capture and display changing measurements using the Hold function making it easier to verify and record measurements.
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Milliamp mA Loop CalibratorsFLUKE 710 mA Loop Valve Tester
Smart Control Valve Testing is now easier than ever
The Fluke 710 Valve Testing Loop Calibrator is designed to enable users to perform quick, easy tests on HART smart control valves. Featuring built-in test procedures and an intuitive user interface, the 710 allows users to quickly and easily perform valve tests, while the valve test quick-check results provide at-a-glance diagnostics help you make maintenance decisions faster than ever. The valve health quick-check results let you know whether your valve is in good, marginal or in bad operating condition so you can quickly decide whether additional maintenance is necessary.
Valve testing and HART communication in a precision loop calibrator
With the 710 Valve Testing Loop Calibrator’s built in HART communication function, users can source a 4-20 mA signal to cause the smart control valve to move, while simultaneously interpreting the valve’s HART feedback signal to determine whether the valve is moving to the expected position. In addition to positional information, the measured pressure delivered from the valve’s internal I/P (which moves the valve) can be determined through the HART communication protocol.
The 710 has built-in test procedures that automatically increase and change the mA signal while monitoring the HART position and pressure feedback from the control valve, giving you a better overall picture of valve health at the simple push of a button.
Pre-configured valve tests, at-a-glance answers
Valve test routines built into the 710 include:
- Manual testing; manually change the mA signal and view the HART position and pressure variable information
- Full range ramping of the mA signal from 4 to 20 to 4 mA while recording the 0-100-0% position, or the pressures applied that move the valve from 0-100-0%
- Stepping the mA signal on the input to the valve in steps and evaluating the valves response to the mA input changes
- Speed tests to determine how fast the valve can open or close
- Bump and partial stroke tests that help test valves over a portion of their range so they can be tested in a live process
ValveTrack™ Software enables further analysis and trending
Valve tests that are logged and recorded to memory in the 710 are available to upload to included ValveTrack™ analysis software.
ValveTrack™ software enables you to:
- Upload, print and plot logged valve tests taken in the field
- Compare previous uploaded tests to recent tests
- View valve test history by HART Tag ID
- Export valve test data to CSV for additional analysis in Microsoft Excel®
Saving time, getting answers
In addition, the 710 offers:
- Logging of HART data in the field. Once recorded by the 710 in the field, the ValveTrack™ software can upload the HART configuration of up to (20) HART devices in your plant and output data in either (.csv) or (.txt) format.
- Data logged mA loop measurements and HART data can be recorded from a particular transmitter for troubleshooting and loop tuning. The data log feature offers selectable capture with recording intervals of 1 to 60 seconds and a logging capacity of 4910 records or 99 individual sessions. Each record contains the mA measurement and all four process variables.
Product Highlights
- Valve test procedures that deliver Good, Marginal or Bad assessment of a control valve
- Generic HART communication
- Best-in-class mA accuracy at 0.01 % measurement or source value
- Compact rugged design
- Intuitive user interface with Quick-Set knob for fast setup, easy to use
- 24 V DC loop power with mA measure mode (-25 % to 125 %)
- Resolution of 1 μA on mA ranges and 1 mV on voltages ranges
- Built in selectable 250 Ω resistor for HART communications
- Simple two wire connection for all measurements
- Auto shutdown to conserve battery life
- Variable step and ramp time in seconds
HART communication
The Fluke 710 offers a built-in HART modem to communicate the following HART commands:
- Read sensor PV information
- Read PV output information
- Read and write PV unit type, tag ID name, descriptor, and message
- Read and write PV ranges (upper and lower)
- Enter/exit fixed current mode
- Set zero offset
- Trim DAC zero (mA output 4 mA)
- Trim DAC gain (mA output 20 mA)
HART Commands for Valves
The 710 includes these unique HART commands to support control valves:
- Autotrim of valve controller
In addition, the Fluke 710 offers:
- Logging of HART data in the field. Once recorded by the 710 in the field, the ValveTrack™ software can upload the HART configuration of up to 20 HART devices in your plant and output data in either .csv or .txt format
- Data-logged mA loop measurements and HART data can be recorded from a particular transmitter for troubleshooting and loop tuning. The data log feature offers selectable capture with recording intervals of 1 to 6 seconds and a logging capacity of 4910 records or 99 individual sessions. Each record contains the mA measurement and all four process variables.
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Milliamp mA Loop CalibratorsFLUKE 772 Milliamp Process Clamp Loop Meter
Fluke 772 Milliamp Clamp Loop Meter measures, sources, and simulates 4-20 mA signals for testing control system I/O or IPs
The Fluke 772 loop meter adds to the basic capabilities of the Fluke 771 to save more time and expand its applications. With the 771, you’ll also be able to: source and simulate 4-20 mA signals for testing control system I/O; measure 4-20 mA signals with in-circuit measurement; power a transmitter with the 24 V loop power supply; and automatically ramp and step change the 4-20 mA output for remote testing.
You’ll be able to test 4–20 mA signals five times faster than with traditional DMMs, and without breaking the loop. That means you can troubleshoot a live device without having to power down, which can save you time, and help you avoid possibly missing something going on in the process.
Other useful features:
- Simulates 4-20 mA signals for testing control system I/O
- Sources 4 to 20 mA signals for testing control system I/O or I/Ps
- Measures 4 to 20 mA signals with in-circuit measurement
- Includes simultaneous mA in-circuit measurement with 24V loop power for powering and testing transmitters
- Features a detachable clamp with extension cable for measurements in tight locations
- Captures and displays changing measurements with Hold function
- Offers mA output linear ramp or 25% step output
- Extends battery life with auto-off and backlight timeout
- Dual backlit display with both mA measurement and percent of 4 to 20 mA span
- Measurement Spotlight to illuminate hard to see wires in dark enclosures
- Measures 10 to 50 mA signals in older control systems using the 99.9 mA range
- Automatically changes the 4 to 20 mA output for remote testing
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Milliamp mA Loop CalibratorsFLUKE 709 Precision mA Loop Calibrator
The Fluke 709 mA loop calibrator is designed to reduce the time it takes to measure or source voltage or current and power up a loop and still produce high-quality results. The Fluke 709 is built around a user friendly interface with a quick-set rotary encoder knob and best in class accuracy at 0.01% of reading. It features a protective holster that fits easily in a technician’s hand and a large backlit display that is easy to read, even in dark, cramped work areas. So it’s a great choice anywhere you need a compact, rich featured precision loop calibrator.
Other useful features:
- Provides resolution of 1 µA on mA ranges and 1 mV on voltage ranges
- Features a compact rugged design and runs on 6 standard AAA batteries
- Provides Auto Shutdown to conserve battery life (adjustable up to 30 minutes)
- Offers variable step and ramp time in seconds
- Provides adjustable span selection (0 to 20 mA or 4 to 20 mA)
- Includes valve test functionality (simulates defined mA values with % keys)
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