Hot runner thermocouples come in a wide variety of product configurations, each designed for specific components and operating conditions within the hot runner system.
Manifold Thermocouples. Button thermocouples dedicated to manifolds are the flagship product for splitter plate temperature monitoring. These sensors are typically installed in dedicated bores within the manifold plate and measure the temperature of the molten plastic as it flows through the distribution channels. The correct installation standard requires that manifold thermocouples be inserted into two-thirds of the reserved hole depth.
Nozzle Thermocouples. Spring coil integrated thermocouples for hot nozzles are matched with spiral spring heating nozzles. Nozzle thermocouples must be close to the effective heating section to ensure the probe is located in the optimal temperature sensing area. PCS Company provides a variety of OEM replacement thermocouples for hot runner system nozzles, all J-type in various diameters and lengths.
Screw-In Probe Thermocouples. M3/M4 thread screw-in probe thermocouples are specially used for valve gate modules. These provide secure, stable mounting and consistent thermal contact.
T-Shaped Elbow Thermocouples. T-shaped elbow thermocouples and customized special sensors solve space constraints in compact mold designs. Angle thermocouples are beneficial wherever a straight cable outlet is not possible or not wanted, for instance in hot-runner manifolds.
Bayonet and Spring-Loaded Sensors. Bayonet-type thermocouples are suitable for measurement of hot runners, dies, and molds. Spring-loaded probes maintain consistent contact pressure despite thermal expansion and contraction during heating and cooling cycles.
Measuring Ring Types. Mineral-insulated thermocouples with measuring rings are especially suitable for mounting in hot runner nozzles. The measuring ring provides a defined thermal contact area and consistent measurement positioning.
Product Specifications. Common sheath diameters are 1.0 mm, 1.5 mm, and 2.0 mm. Smaller diameters provide faster response, ideal for nozzle tips, but are more fragile. Larger diameters offer greater durability for manifold zones but respond more slowly. Connectors are designed to be shockproof, high-temperature resistant, and anti-interference, ensuring stable signal transmission in complex electromagnetic environments.
Compatibility. Most leading brands provide products with standardized connectors for easy replacement. Sealed junctions prevent resin contamination and extend service life. Custom sizes are available for special mold designs.
