Easier than ever to test valves
The Fluke 710 loop calibrator for valve testing is designed for quick and easy testing of control valves with HART technology. The 710's integrated test procedures and intuitive user interface allow users to test valves quickly and easily. In addition, the quick test results provide a clear diagnosis for quick maintenance decisions. Based on the results of the quick valve test, you know whether your valve is in good, marginal or poor condition, so you can quickly decide whether additional maintenance is required.
Valve testing and HART communication with a precision loop calibrator
The integrated HART communication function of the 710 loop calibrator for valve testing allows users to generate a 4-20 mA signal that controls the smart control valve. At the same time, the HART feedback signal is interpreted to determine whether the valve moves to the expected position. In addition to valve position information, the HART communication protocol can be used to determine the pressure delivered by the valve that moves the valve.
The 710 offers integrated test procedures that automatically increase and change the mA signal while monitoring HART feedback on control valve position and pressure. This gives you a better picture of the condition of the valve at the simple touch of a button.
Pre-configured valve tests, summary answers
Valve test functions integrated into the 710 include:
- Manual testing; manual change of mA signal and information on HART position and pressure variable
- Increase of mA signal over full range from 4 to 20 to 4 mA during registration of 0-100-0% position or pressures moving the valve of 0-100-0%
- Step change of mA signal at valve input and evaluation of valve response to mA input signal changes
- Speed tests to determine how fast the valve can be opened and closed
- Impact and partial stroke tests that help test valves over part of their range so that they can be tested during an actual process
ValveTrack™ software allows further analysis and trends to be made
Valve tests logged and stored in the 710's memory can be uploaded using the ValveTrack™ analysis software.
The ValveTrack™ software offers you the following features:
- Uploading, printing and plotting of logged on-site valve tests performed
- Comparing previously uploaded tests with recent tests
- Display of valve test history via HART label ID
- Export of valve test data to CSV for further analysis in Microsoft Excel®
Saving time, getting answers
In addition, the 710:
- On-site logging of HART data. After on-site logging by the 710, the ValveTrack™ software can upload the HART configuration of up to 20 HART devices in your installation and output data in .csv or in .txt format.
- Logged mA loop measurements and HART data from a given transmitter can be logged for the purpose of troubleshooting and fine-tuning the loop. The data logging function has a selectable recording interval 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.
Main product characteristics
- Test procedures rated Good, Marginal or Poor for control valves
- Generic HART communication
- Highest accuracy in its class of 0.01% of measurement or source value
- Compact robust design
- Intuitive user interface with ‘Quick-Set’ button for quick set-up and user-friendliness
- 24 V DC loop power supply with mA measurement mode (-25% to 125%)
- Resolution of 1 µA in mA ranges and 1 mV in voltage ranges
- Built-in selectable 250Ω resistor for HART communication
- Simple two-wire connection for all measurements
- Automatic switch-off for longer battery life
- Variable step and rise time in seconds.
HART communication
The Fluke 710 features a built-in HART modem for communication that supports the following HART commands:
- Reading information about PV (primary variable) from sensor
- Reading PV output information
- Read out and write PV unit type, tag ID name, descriptor and message
- Read and write ranges for the primary variables (upper and lower range values)
- ]Activate or deactivate fixed current mode
- Setting zero point shift
- Setting zero point DAC (mA output 4 mA)
- Set gain DAC (mA output 20 mA)
HART commands for valves
The 710 offers the following unique HART commands for control valves:
- Automatic adjustment of the valve regulator
In addition, the Fluke 710 offers:
- On-site logging of HART data. After on-site logging by the 710, the ValveTrack™ software can upload the HART configuration of up to 20 HART devices in your installation and output data in .csv or in .txt format.
- Logged mA loop measurements and HART data from a given transmitter can be logged for the purpose of troubleshooting and fine-tuning the loop. The data logging function has a selectable recording interval 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.
