Fluke 710 - mA Loop Valve Tester

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

Performance Test Comparison in Fluke ValveTrack Software

ValveTrack Software Enables Further Analysis and Trending

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 9800 records or 99 individual sessions. Each record contains the mA measurement and all four process variables.

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 9800 records or 99 individual sessions. Each record contains the mA measurement and all four process variables.