Gas Turbine Sensors & Seals

Conax Technologies 

As a dealer of Conax Technologies which is  world leader in manufacturing Compression Seal fittings, Temperature sensors and Custom designed solutions. These products find applications in Aerospace, Furnace, Vacuum Furnace and Autoclaves, Power Sector for Gas turbine, Petrochemical, Pharmaceutical, Photovoltaic, Semiconductor, Defence, Fiber Optic & Manufacturing Industries. They have manufacturing unit in USA.

Sensors and seals for all locations on GE gas turbines (bearing, wheelspace, air inlet, compressor discharge, and bearing sensor wire seals) Exhaust Gas Sensors. Air Inlet. Sensors. Bearing Sensors. and Seals. Compressor. Discharge Sensors. Wheel Space Sensors.

Challenge:

A Conax customer needed a source for flashback thermocouples on a Siemens Westinghouse W501F gas turbine. They currently have four turbines with plans to bring two more on line in the future. Each turbine has 16 burner cans with two sensors on each burner can for a total of 32 sensors. They schedule maintenance once or twice per year, but unscheduled outages also occur.

The sensor assemblies use Type K sensor elements, with grounded junction and 316SST sheath, and operate at 700°F. Positioning of the sensor within the burner can is critical. If the sensor tip is off by 1/2” either direction, a massive error in temperature results. They purchased the sensors from a local distributor, but were hoping to find a lower cost alternative.

Solution: Conax provided the desired cost savings while enhancing the design, shortening the sensor length to better fit the turbine.

Impact: We understand their business enough to refine the design to meet their needs. Conax expertise and design capability led to a subsequent quote on disk cavity thermocouples for the same turbines.

Key products

  • Temperature Sensors

 

Conax temperature sesnors are used by Gas Turbine OEM (GE, Siemens, Pratt and Whitney)  these turbines in India need replacement during failure and also high temperature sesnors users who need  longer MTBF are users. Customer who need compressed seal with temp sensor  combinations are biggest customer.

 

 

 

  • Exhaust Gas Sensors and Blade Path Sensors

These type K ungrounded thermocouples are manufactured using Special (+/-0.4{7679649441f207219473938cbf2554cb81b20f5e9480e3e513d1116d6051e118}) limits and have a time response of 1.7 to 4.0 seconds depending on the tip configuration. Conax Technologies manufactures these exhaust thermocouples with tip diameters from .062 diameter to .125. They are used on all heavy duty gas turbines and are of the latest configuration for easy replacement. Just connect Conax’s thermocouple to the flexible, stainless steel braided cable for quick installation and longer life.

All specification qualified exhaust gas and blade path thermocouples are manufactured from ASTM E585 thermocouple materials utilizing the highest purity insulation material yielding superior insulation resistance at elevated temperatures.

The thermocouples are manufactured and tested at various points during the manufacturing cycle ensuring the highest possible level of quality. Product testing includes helium leak testing, calibration, thermal shock, insulation resistance and hermeticity testing of sealing points.

Featuring Type K conductor wire with MgO insulation, hermetically sealed in stainless steel for high-temperature oxidation resistance, vibration resistant hermetic terminations and high reliability mineral insulated cable.

Conax Technologies also manufactures exhaust thermocouples using other configurations. Simply supply the drawing number you have and utilize our short cycle turn around time.

These exhaust gas thermocouples, like all of our products, are manufactured in the United States of America.

Wheelspace, Disc Cavity and Compressor Discharges Thermocouples

Conax Technologies’ thermocouples for this application meet the operational and performance requirements per the OEM specifications as replacements on heavy duty gas turbines. These cost effective thermocouples are designed to be hermetically sealed to provide a more reliable product that eliminates IR failures. The positive stop at the tip of the thermocouple eliminates any fretting problems. Conax’s wheelspace, disc cavity and C.D.T. thermocouples are manufactured using a stainless steel sheath, MgO insulation with type K conductors to ensure the robust design needed in this application.

All specifications qualified thermocouples are manufactured from ASTM E585 thermocouple material utilizing the highest purity insulation materials yielding superior insulation resistance at elevated temperatures. The thermocouples are manufactured and tested at various points during the manufacturing cycle, ensuring the highest possible level of quality.

Production testing includes helium leak testing, calibration, thermal shock, insulation resistance and hermeticity testing of sealing points. Conax Technologies also manufactures these type thermocouples using other configurations. Simply supply the drawing number you have and utilize our short cycle turn around time.
These thermocouples, like all of our products, are manufactured in the United States of America.

Bearing Sensors and Seals

These sensors are for embedded applications where temperature monitoring is critical to machine performance and reliability. Available with RTDs or thermocouple types J, K, T and E. The unique bearing sensor wire seal prevents migration of oil along the sensor leads.

Air Inlet or Oil Temperature Sensor

All specification qualified air inlet thermocouples are manufactured from ASTM E585 thermocouple material utilizing the highest purity insulation material yielding superior insulation resistance and sensor repeatability. The thermocouples are manufactured and tested at various points during the manufacturing cycle ensuring the highes possible level of quality.

Exhaust Gas Sensor

Blade Path Sensor

Frame 5 Series EGT Sensor

Frame 7 Series EGT Sensor

Wheel space Sensor Assembly

Bearing Sensor Assembly

Air Inlet or Oil Temperature Sensor

K-316SS6-2U-T4(26FT)-34.4″

GE PN 137A4662P031

P/N 379A9705P053

K-321SS12-U(.06X12.10)-T3(5FT)-295.3″ OEM

gas turnine