Description
Bearing Temperature RTD Sensor (Model APED-8×35) is a duplex PT100 temperature sensor designed for continuous bearing temperature monitoring in generators, electric motors, turbines, compressors, pumps, gearboxes, and other heavy rotating machinery. Installed within the stationary bearing housing, the sensor measures bearing temperature without contacting rotating components, supporting reliable condition monitoring and equipment protection.
The sensor features a duplex (3+3 wire) PT100 sensing element, allowing two independent temperature signals from a single installation point. One element can be connected to a protection relay for machine safety, while the second can be used for PLC, DCS, SCADA, or predictive maintenance systems.
Its 8 mm diameter SS316 stainless steel probe and 35 mm sensing tip are designed for larger bearing housings where a more robust sensing assembly is preferred. The Class A PT100 element provides accurate and repeatable temperature measurement over a range of -50°C to +400°C, while the TF/TF/SS cable offers excellent resistance to heat, vibration, oil, grease, and industrial contaminants.
Key Features
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Duplex (3+3 Wire) Redundant Signal Output Contains two independent Class A PT100 elements inside a single probe to simultaneously drive protection trip relays and predictive maintenance loggers.
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Heavy-Duty 8mm OD Sheath (35mm Tip) Sturdy 8mm outer diameter housing provides enhanced mechanical rigidity for larger bearing housings and heavy rotating machinery castings.
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Class A Precision (-50°C to 400°C) High-accuracy platinum sensing elements deliver immediate detection of subtle thermal changes ($pm 0.15^circtext{C}$ at $0^circtext{C}$).
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Oil, Grease & Chemical-Resistant Build Fully sealed SS316 stainless steel body prevents lubricant ingress and chemical degradation in harsh sump environments.
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Armored Vibration-Resistant Lead Cable (TF/TF/SS) 3-meter Teflon-insulated extension cable wrapped in a stainless steel outer braid withstands continuous mechanical vibration and high ambient temperatures.
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Essential Predictive Maintenance Tool Serves as an early warning system against bearing oil breakdown, alignment shifts, and friction wear.
Applications
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Power Generation Turbines & Generators Bearing shoe and oil film temperature tracking in steam, gas, and hydro turbines.
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Heavy Electric Motor & Pump Housings Main drive motor bearing monitoring in steel mills, mining equipment, and cement plants.
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Industrial Gearboxes & Compressors Continuous thermal surveillance on high-speed shaft bearings, thrust pads, and reduction gear housings.
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Wind Turbine Main Shaft Bearings Remote condition monitoring on main shaft bearings and generator gearboxes.
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Marine Propulsion & Heavy Blowers Critical thrust bearing protection on marine engine shafts and continuous-duty process blowers.
Datasheet
FAQs
1. What is a Bearing Temperature RTD Sensor?
A Bearing Temperature RTD Sensor is a PT100 Resistance Temperature Detector (RTD) installed in a stationary bearing housing to continuously monitor bearing temperature and help protect rotating equipment from overheating, excessive friction, lubrication failure, and premature bearing damage.
2. Why are RTD Sensors used for Bearing Temperature Monitoring?
RTD sensors provide highly accurate, stable, and repeatable temperature measurement, making them ideal for monitoring bearing conditions and supporting predictive maintenance. Early detection of abnormal temperature increases helps prevent unexpected equipment failures and reduces maintenance costs.
3. What is the advantage of a Duplex PT100 Sensor?
A Duplex PT100 Sensor contains two independent sensing elements, allowing one temperature signal to be used for equipment protection while the second signal is connected to a PLC, DCS, SCADA system, or condition monitoring equipment for continuous monitoring and process control.
4. Where is a Bearing Temperature RTD Sensor installed?
A Bearing Temperature RTD Sensor is typically installed in the stationary bearing housing, where it accurately monitors the bearing temperature without making contact with the rotating shaft. This installation provides reliable temperature measurement while protecting the sensor from mechanical wear.
5. What industries commonly use Bearing Temperature RTD Sensors?
Bearing Temperature RTD Sensors are widely used in power generation, steel plants, cement plants, mining, oil & gas, paper mills, chemical processing, water treatment, manufacturing facilities, and other industries with heavy rotating machinery where continuous bearing temperature monitoring is essential for equipment reliability.
