Valve opening measurement with LVDT sensor

capteur LVDT

Customer

  • Designers, operators and managers of power, chemical, hydro and gas turbine plants.

Challenge

In order to facilitate control and optimise the opening system of gas turbines, the objective is to be able to accurately measure the movement and different positions of the valves or butterflies. A reliable and easy-to-use measuring system is required so that operators can monitor and analyse the movement of the valves as the turbines open and close, without spending extra time and energy. The measuring device should be able to be mounted on the turbine flap and measure the position of the valve stem and its opening.

PMI Solution

The LVDT range of displacement sensors, with measurement ranges available from ± 0.63 mm to ± 250 mm is one of the best solutions. With accurate measurements, LVDT sensors and probes can be used to adjust and control the flow of gases, fuels, liquids or cooling systems delivered by turbines. These sensors can be easily integrated into a control system capable of continuously measuring the position of throttle valves. By selecting a suitable LVDT displacement sensor and linear span, monitoring and control of valve openings can be done continuously.

Customer benefit

  • Product reliability: unlimited mechanical life, excellent repeatability, infinite resolution, frictionless measurements, very low contact.
  • The choice of a product totally adapted to the customer's application: wide range of sensors with variable measuring ranges, various mountings and outputs, wiring options, robustness (IP 68, extreme temperatures...).
  • Ease of use: LVDT displacement transducers can be supplied with electronics (display, conditioner...) delivering a 0-10 Vdc, 4-20Ma output to quickly measure and process the acquired data.

Product selection

LVDT displacement sensor

HT-1000 - Capteur LVDT 540°C

LVDT sensor ± 25.4 mm 540°C - non amplified - High temperature
LVDT displacement sensor

R-750 - Durci ± 250 mm - ⌀ 19mm

LVDT position sensor - ± 1.25 to ± 250 mm - high temperature
conditionneur Capteur de déplacement LVDT

NTC-6000

LVDT/RVDT Signal Conditioner - DIN-Rail
LVDT displacement sensor

MBB-315 - Palpeur miniature ±5mm

LVDT ± 5 mm unamplified metrological probe
eddy current sensor

1925 - 1950 - 1975

Non contact displacement measurement - extreme conditions - 0.5 to 5 mm
Capteur LVDT durci miniature

M-375 - miniature LVDT ± 50 mm

Rugged LVDT sensor - miniature ± 50 mm - High Temp - ⌀ 9,5 mm
LVDT displacement sensor

R-812 - Standard ± 250 mm ⌀ 20.6

Stainless Steel LVDT Position Sensor - ± 1mm to ± 250 mm
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