Core Value

The Threaded Stainless Steel Pt100 Temperature Sensor is a high-accuracy Platinum Resistance Temperature Detector (RTD) engineered for direct fluid immersion, pressurized pipelines, chemical processing tanks, and heavy machinery manifolds. By pairing a high-precision Class A Pt100 element with a CNC-machined 304 or 316 stainless steel threaded fitting, this sensor delivers a pressure-tight mechanical seal capable of withstanding aggressive media, continuous hydraulic pulses, and broad operating temperatures from -200°C to +500°C.

Constructed with a heavy-duty stainless steel sheath, the probe immerses directly into liquids or gases, eliminating thermal lag and ensuring linear PID feedback. The threaded fitting—available in standard NPT, BSP, or Metric thread sizes—is either permanently TIG-welded to the sheath for high-pressure integrity or configured with an adjustable compression fitting for adaptable immersion depths. Available in 3-wire and 4-wire configurations, these RTD sensors eliminate lead wire resistance errors across extended cable runs. BACKED BY EXTENSIVE SENSOR MANUFACTURING EXPERIENCE and UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS to guarantee zero leakage, thread accuracy, and exceptional electrical stability across demanding industrial applications.

• ✓ Class A Precision Calibration: High-purity platinum element offers tight tolerances ($\pm 0.15°C$ at 0°C) and superior linearity over standard thermocouples.
• ✓ Leak-Proof Threaded Seal: Precision CNC-machined hex threads (NPT, BSP, Metric) ensure a tight, leak-proof seal in pressurized tanks and pipe manifolds.
• ✓ 304/316 Stainless Steel Sheath: Corrosion-resistant outer housing withstands harsh chemicals, oil, steam, and abrasive fluid environments.
• ✓ 3-Wire & 4-Wire Signal Lead: Compensates for lead wire resistance, maintaining accurate temperature feedback across long cable runs.
• ✓ Vibration & Shock Resistant: Magnesium oxide (MgO) packed inner assembly dampens heavy mechanical vibration and pump pulsation.
• ✓ Flexible Lead Protection: Shielded with high-temperature fiberglass, Teflon (PTFE), or stainless steel overbraid to prevent mechanical wear.
• ✓ Reliable Quality: Engineered to meet or exceed international IEC 60751 standards for industrial process control.
• ✓ Quality Assured: UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS including 3-point temperature calibration, insulation resistance testing, and hydrostatic pressure checks.

Technical Specifications & Performance Data

Industrial Applications & Solutions

• Fluid & Gas Pipelines: Direct thread immersion into process lines to monitor water, oil, steam, and chemical temperatures.

• Hydraulic & Power Units: Threaded into oil reservoirs and pump manifolds to track fluid temperatures and prevent system overheating.

• Food, Beverage & Dairy: 316 SS threaded probes for brewing vats, pasteurization lines, and cooking kettles.

• Plastic Extrusion & Molds: Screw-in installation into temperature control fluid lines and die heating manifolds.

• HVAC & Industrial Chillers: Permanent thread mounting in compressor lines and heat exchangers for precision climate control.

High-Performance Pt100 Sensors vs Standard Market Options

Installation & Handling Guidelines

• Thread Sealing: For tapered threads (such as NPT or BSPT), apply high-temperature PTFE thread tape or liquid pipe sealant to the male threads to ensure a leak-proof hydraulic seal.
• Torque Wrench Application: Always place your wrench on the solid hex nut section when threading the sensor into place. Never twist or rotate the sensor by grabbing the probe sheath, transition cap, or cable, as this will sever internal wiring.
• Immersion Depth Rule: Ensure the probe tip extends into the liquid flow by at least 8 to 10 times the probe’s diameter to avoid thermal conduction errors caused by ambient cooling on the outer pipe wall.
• Wiring & Compensation: For 3-wire Pt100 sensors, connect the two matching-colored wires (typically white/white) and the single contrasting wire (red) directly to the corresponding RTD terminals on your controller to eliminate lead wire resistance.
• Fluid Protection at Transition: If the sensor exit is exposed to steam, washdown, or oil splatter, select a Teflon (PTFE) insulated lead wire with an epoxy-potted wire transition to keep moisture from entering the probe.

Customer Success Stories

Case 1:

Industrial Hydraulic Equipment Builder (Japan)

• Application: Hydraulic oil temperature monitoring in 350-bar injection molding presses.

• Challenge: Standard sensors were leaking oil past the thread crimps due to heavy pressure spikes during high-speed clamping cycles.

• Solution: Threaded Pt100 Sensors with 1/4″ NPT solid 304 SS CNC fittings and TIG-welded sheaths.

• Results: ZERO LEAKS UNDER HIGH PRESSURE. “The CNC hex threads thread in effortlessly and seal completely. No oil leaks after 12 months of continuous high-pressure press cycles.”

Case 2:

Microbrewery Machinery Supplier (USA)

• Application: Precision thermal control inside stainless steel mash tun kettles.

• Challenge: Inconsistent temperature readings from cheap Class B sensors were causing variations in batch beer flavor profiles.

• Solution: Class A 3-Wire Pt100 Sensors with 1/2″ NPT 316 SS threaded fittings and Teflon-shielded lead wires.

• Results: BATCH ACCURACY RESTORED. “The Class A precision gave us exact, linear control over mash temperatures within $\pm 0.2°C$. The 316 SS material meets all sanitary food-grade requirements.”

Pricing & Procurement Options

• Standard Production: MOQ 5 pieces. BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE ensuring exact resistance matching and dimensional repeatability across production lots. Tiered volume discounts available for 50+ unit orders.

• Lead Times: Standard Catalog Dimensions (Straight Rods OD 12–30 mm): In stock, 3-5 days. Custom Single/Double Spiral Shapes or Heavy Diameters (OD 35–54 mm): 7-10 days. Express air freight with protective wooden crating.

• Global Logistics: Encased in individual shock-absorbing foam tubes within reinforced wooden export crates to prevent transportation breakage.

• Sample Orders: Custom sample elements produced upon CAD drawing and electrical specification approval. Every shipment UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS prior to dispatch.

Global Certifications & Compliance

• CE Marking
  Fully compliant with European safety and environmental standards.
• LVD Compliance
  Low Voltage Directive tested for continuous thermal load safety.
• RoHS Compliant
  Constructed using environmentally safe, lead-controlled brass alloys.
• ISO 9001
  Certified quality control covering CNC machining, coil pressing, and electrical testing.

Quality Documentation: Certificate of Conformity (COC) and insulation resistance test reports included.

Comprehensive After-Sales Support

• • Warranty: 1-Year Comprehensive Warranty covering internal heating element and built-in sensor.

  • Technical Support: Application engineers available for wattage distribution calculation, thermocouple calibration, and nozzle fitting assistance.

  • Global Response Network: BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE with technical inquiry feedback within 2 hours.

Ready to Optimize Your Injection Molding?

Next Steps:

• 📧 Request Custom Quote – Send your nozzle dimensions, wattage, voltage, and HT-CLW-450 drawing requirements.
• 🔧 Free Design Consultation – Work with our thermal engineers to optimize heat distribution and lead insulation.
• 📦 Order Test Samples – Evaluate thermal performance on your injection molding machine.
• 📞 Contact Hot Runner Experts – Response within 2 hours

• Leading Manufacturer & Export of Industrial Heaters

  Providing A One Stop Solutions To All Industrial Heaters Needs

  SINCE 1990 Professional Heater Producer | Our Products Undergo Multiple Rigorous Quality Checks