Import Air Preheater Gap Sensor Jgs-60c — Buy in wholesale FOB from Supplier in China

The JGS-60C is a dedicated air preheater gap sensor designed for generator sets in thermal and hydropower plant applications. Manufactured by Dongfang Yoyik Engnieering Co., Ltd. in Deyang, Sichuan Province, this inductive linear position sensor measures the radial or axial gap in rotary air preheaters to prevent contact between rotating and stationary components. The sensor operates on proximity detection principles, converting mechanical displacement into an electrical signal for monitoring by the turbine control system. Its output feeds directly into distributed control systems (DCS) or dedicated boiler monitoring platforms.

Construction typically employs a stainless steel or nickel-alloy probe housing to withstand flue gas environments up to 400°C (typical for Ljungström preheater applications), with a hermetically sealed sensing element protected against ash erosion and corrosive sulphur compounds. The JGS-60C designation indicates a specific Dongfang Yoyik product line calibrated for 60mm nominal measurement range, though the exact stroke should be confirmed against the generator set's preheater design drawings. Cable connection is generally via aviation connector or terminal box with shielded twisted-pair output to minimise electromagnetic interference from nearby ignition systems and high-current buswork.

Primary buyers are power plant maintenance departments, EPC contractors for thermal power projects, and OEMs servicing Dongfang turbine-generator sets. The sensor is critical for preventing forced outages caused by rotor-to-housing contact in regenerative air preheaters. When sourcing, verify compatibility with the existing gap monitoring system (analog 4-20mA, digital, or vibro-meter protocol), the probe mounting thread specification, and whether the supplier provides calibration certificates traceable to national metrology standards. Dongfang Yoyik also supplies complementary items including LVDT position sensors, speed probes, and igniter assemblies for complete boiler instrumentation refurbishment.

Dongfang Yoyik Engnieering Co., Ltd. is located at 4-3F, Building A, Huashan Platz, Deyang City, Sichuan Province, China (postal code 618000). The company occupies a 'harbor' trust tier on this platform, with a recorded response rate of 0.00 percent and zero average response hours, which indicates no buyer enquiries have been tracked through this channel or response data has not been populated. The supplier profile does not state year of establishment, registered capital, employee count, factory floor area, or annual revenue.

The listing presents Dongfang Yoyik as a specialist in generator accessories and power plant spare parts, serving thermal power stations, hydropower plants, cement plants, coal gangue power plants, and metallurgical facilities. The source description claims decades of service providing equipment selection, construction planning, installation commissioning, and after-sales support, though no specific project references, client names, or contract volumes are verifiable from the provided data. The company offers a broad inventory beyond the JGS-60C, including LVDT sensors, speed probes, pressure transmitters, igniters, and relay modules. Buyers should independently verify the supplier's ISO 9001 certification status, OEM authorisation from Dongfang Electric, and reference installations before committing to large or critical orders.