Description
M8 Screw-in RTD Sensor (Model APES-M8) is a PT100 resistance temperature detector (RTD) designed for reliable temperature measurement in industrial equipment that uses standard M8 metric threaded mounting points. The M8 threaded connection enables direct installation into compatible machinery without additional adapters, making it suitable for OEM equipment as well as replacement applications.
Unlike BSP or NPT threaded sensors that are commonly used in process piping, the M8 screw-in design is intended for equipment manufactured with metric threaded ports. This provides a secure mechanical connection and dependable sealing for applications operating under vacuum, positive pressure, or normal process conditions.
The sensor uses a PT100 sensing element capable of measuring temperatures from -50°C to 400°C. Its SS316 stainless steel probe offers excellent corrosion resistance and durability in industrial environments, while the TF/TF/SS (Teflon insulated with stainless steel braided) cable provides protection against heat, oils, chemicals, moisture, and mechanical abrasion.
The M8 Screw-in RTD Sensor is compatible with PLCs, DCS systems, RTD transmitters, temperature controllers, and industrial automation systems. It is available in simplex and duplex configurations as well as PT100 and PT1000 sensing elements, allowing it to be tailored to different process control requirements.
Key Features
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Standardized M8 Metric Bolt Fitting Drops directly into standard M8 tapped machine ports without needing BSP/NPT pipe adapters.
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Hermetic Pressure & Vacuum Sealing Robust body construction maintains tight fluid sealing under process pressure fluctuations and vacuum conditions.
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Wide Temperature Band (-50°C to 400°C) Covers low-temperature refrigeration applications up to high-temperature industrial fluid and motor frame monitoring.
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High-Purity SS316 Stainless Steel Probe Provides high corrosion resistance against oils, coolants, mild chemicals, and atmospheric exposure.
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Armored 3-Meter Cable (TF/TF/SS) Double-Teflon insulation protected by a flexible outer stainless steel braid offers thermal resistance up to 250°C–300°C and mechanical toughness.
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Flexible Circuit Options Available in standard Simplex (single element) or Duplex (dual element) configurations, with optional PT100 or PT1000 sensors.
Applications
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Motor & Gearbox Housing Monitoring Direct surface-well temperature measurement in electric motors, bearings, and gearbox castings.
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Hydraulic & Lubrication Systems In-line oil temperature tracking in hydraulic power units, oil reservoirs, and pump housings.
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HVAC & Refrigeration Equipment Refrigerant line and compressor temperature tracking using pre-tapped metric fittings.
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Chemical & Petrochemical Processing Tank wall, vessel port, and manifold temperature monitoring under pressure or vacuum.
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Machinery OEMs & Automated Plant Equipment Direct integration into custom machinery manifolds and automated production lines.
Datasheet
FAQs
1. What is an M8 Screw-in RTD Sensor?
An M8 Screw-in RTD Sensor is a PT100 Resistance Temperature Detector (RTD) featuring a standard M8 metric threaded connection that allows direct installation into equipment designed with M8 threaded ports. It provides accurate, stable, and reliable temperature measurement for industrial machinery and OEM applications.
2. Why choose an M8 Screw-in RTD Sensor instead of a BSP Threaded Sensor?
An M8 Screw-in RTD Sensor is designed for machinery with metric M8 threaded mounting points, whereas BSP-threaded RTD sensors are intended for industrial piping, tanks, and process connections. Choosing the correct thread ensures proper fit, reliable sealing, and secure installation.
3. Where are M8 Screw-in RTD Sensors commonly used?
M8 Screw-in RTD Sensors are widely used in industrial machinery, HVAC systems, refrigeration equipment, hydraulic systems, automation equipment, tanks, pipelines, OEM machines, compressors, and process equipment with M8 threaded ports requiring accurate temperature monitoring.
4. Can an M8 Screw-in RTD Sensor be used in Vacuum or Pressure Applications?
Yes. When correctly installed with appropriate sealing arrangements, an M8 Screw-in RTD Sensor is suitable for both vacuum and pressurized process systems, providing reliable and leak-resistant temperature measurement.
5. What is the difference between an M8 RTD Sensor and a 1/2″ BSP RTD Sensor?
An M8 RTD Sensor uses a metric M8 thread commonly found on industrial machinery and OEM equipment, while a 1/2″ BSP RTD Sensor uses a British Standard Pipe (BSP) thread designed for industrial piping, tanks, reactors, and process connections. Selecting the appropriate thread ensures compatibility with the installation point.
