Product Overview
The HYS series uses a 1" to 2.5" screw plug as the mounting interface, screwing directly into the vessel wall or a tee—no extra flange or bracket needed. Three U-tube elements are welded inside the plug for a compact build suited to space-limited small tanks, washers, hot-water tanks, and pipe tracing.
Threads are available in NPT, BSPP, BSPT, and metric M series, sealed with PTFE tape or metal spiral-wound gaskets. Element lengths run from 200 mm to 1200 mm with power density of 3–6 W/cm²—lower end for water, upper end for oil; for high-viscosity media we recommend reducing surface load and adding a thermowell.
Terminal boxes come in plastic waterproof, cast-aluminum, and explosion-proof types. The explosion-proof version uses a flameproof terminal chamber and ceramic terminals for solvents, cleaning agents, and other flammable-vapor environments. Three-phase models balance the load in star or delta internally with no neutral brought out, reducing field-wiring errors.
Construction Features
- 1" – 2.5" NPT / BSP / metric threads, screw directly into vessel wall
- Three U-tube elements, power density selectable 3 – 6 W/cm²
- Optional built-in thermowell with K-type thermocouple or PT100
- Terminal box in waterproof, cast-aluminum, or explosion-proof versions
- Element length 200 – 1200 mm, non-standard extension available
- Brass or stainless-steel plug body for different media
Technical Specifications
| Rated Power | 0.5 – 36 kW |
|---|---|
| Rated Voltage | 220V single-phase / 380V three-phase |
| Thread Spec | NPT 1"–2.5", BSPP, BSPT, M45×2, etc. |
| Plug Material | Brass / 304 / 316L |
| Sheath Material | 304 / 316L / Titanium |
| Element Length | 200 – 1200 mm |
| Max Temperature | 400°C |
| Protection Class | IP54 / IP65 / Explosion-proof Exd IIB T4 |
The table lists typical configuration ranges. Special pressure, temperature or media conditions require re-checking; final parameters are confirmed by the approved drawings and technical agreement.
Typical Applications
- Small water and washing tanks
- Hot-water tanks and storage vessels
- Electroplating and phosphating tanks
- Pipe tracing
- Hydraulic and lubricating oil holding
Information Needed for Selection
- Medium name, concentration, and whether it contains particles
- Total medium volume or circulation flow rate
- Initial and target temperature
- Required heat-up time
- Vessel or pipe size and material
- Supply voltage, phases, and available capacity
- Installation environment and hazardous-area requirements
- Connection standard and mounting orientation
