April 2021Maintenance, Test & Measurement, Calibration
Control valve testing has often meant using complicated testers that require extensive training, the removal of the valve, and often one to two hours of test time on the bench. Comtest now offers Fluke’s 710 mA Loop Valve Tester. The device allows technicians to source the 4-20 mA signal while it interrogates HART data to collect critical information about the valve’s position and status, providing quick checks of control valves while they are in place. With built-in test procedures and an intuitive interface, the Fluke 710 allows technicians to perform valve tests, while the valve test quick-check results provide at-a-glance diagnostics to make faster maintenance decisions.
With the tester’s built-in HART communication function, technicians 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 seen with the HART communication protocol.
The 710 features pre-configured valve tests for reliable and repeatable testing. The built-in routines include:
• Manually changing the mA signal and viewing 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 percent position, or the pressures applied that move the valve from 0-100-0 percent.
• Stepping the mA signal on the input to the valve in steps and evaluating the valve’s 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.
Test results are stored in the memory of the 710, from where they can be uploaded to the included ValveTrack analysis software, which allows users to:
• Upload 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.
Three ways to conduct thermal inspections Comtest
Temperature Measurement
There’s no universal solution for all infrared inspections with a Fluke thermal camera, also known as a thermal imager. You need to match your method to the type of equipment you’re inspecting and the level of detail you require.
Read more...Multimeters: the perfect entry-level choice Comtest
Electrical Power & Protection
Experience the precision, durability and safety of professional-grade test tools with the entry level Fluke 15B+ and 17B+ digital multimeters.
Read more...Comtest celebrates 20 years Comtest
News
It is said that time flies when you’re having fun, and so it seems to be for the Comtest Group of Companies, established in 2005, which is proudly celebrating 20 years of successful trading in the southern African test and measurement, communications, equipment, solutions and specialised systems markets.
Read more...Measuring and analysing PV circuit performance Comtest
Electrical Power & Protection
Regardless of the test method, you must know the plane of array irradiance and cell temperature to evaluate PV circuit performance. Proper sensor types and test methods like the Fluke Solmetric PVA 15i-V curve tracer should be used for reliable results.
Read more...UV water treatment system
Maintenance, Test & Measurement, Calibration
bestUV is an innovative manufacturer of professional ultraviolet (UV) water treatment systems for industrial markets.
Read more...Prioritising arc flash safety Comtest
Electrical Power & Protection
Comtest has developed a range of thermal imaging and wireless testing tools from Fluke, designed to ensure safety is the top priority for engineers working in potentially dangerous arc flash zones.
Read more...RS PRO a key partner for planned maintenance RS South Africa
Maintenance, Test & Measurement, Calibration
RS PRO, the own-brand of RS, offers a comprehensive selection of over 80 000 products spanning all industries and technologies.
Read more...WearCheck leads the way in condition monitoring Wearcheck
Maintenance, Test & Measurement, Calibration
Minimising maintenance costs of mining and power-generating machinery and maximising its operational efficiency – these goals form the foundation of the proactive/preventive maintenance services provided by the expert technicians at condition monitoring specialist, WearCheck.
Read more...Collect data three times faster SKF South Africa
Maintenance, Test & Measurement, Calibration
SKF has extended its renowned Microlog Analyzer family of data collection devices with the addition of the Microlog Analyzer dBX. Currently SKF’s most powerful diagnostic tool, this cutting-edge device redefines diagnostic capabilities, enabling users to take measurements three times faster than its predecessor.
Read more...No more shocking, inaccurate insulation testing Comtest
Electrical Power & Protection
Fluke has introduced the Fluke 1535 and 1537 2500 V insulation resistance testers, engineered to simplify frontline troubleshooting, whether on the factory floor or working in the field at a solar installation.
printer friendly version