Towa Seiden Kogyo Co.
Towa Seiden HL-400H Paddle Type Level Switch Heat Resistant Type

Manufacturer: Towa Seiden Kogyo Co., Ltd.
Model: HL-400H
Features
The Paddle-Type Level Switch is highly versatile, capable of measuring the levels of nearly all powders and particles, ensuring broad applicability. Additionally, with a wide range of available options, it can adapt to various operating environments, offering flexibility across different settings. Moreover, the design is simple and easy to handle by anyone, eliminating the need for adjustments. Due to its straightforward mechanical structure, the operation principle is intuitive and easy to grasp, making it a reliable choice for numerous industrial applications.
This model supports heat resistance inside the tank up to 100°C, so it ensures stable operation in standard high-temperature processes. Moreover, it maintains consistent performance under continuous use. Meanwhile, applications that require higher heat tolerance can select the HL-400HH model. As a result, the system supports temperatures up to 150°C with confidence. Therefore, users can choose the right specification based on process conditions. In addition, this flexibility improves safety and efficiency. Consequently, the product fits a wide range of industrial thermal environments.
Specifications
| Specifications | |
|---|---|
| Power Supply Voltage | AC100/110V 50/60Hz Optional: AC200/220V 50/60Hz (other voltages available) |
| Mounting | Threaded type G3/4 |
| Power Consumption | 1.5W |
| Contact Output | 1C contact, AC250V 5A (resistive load) |
| Detection Torque | Approx. 4.9 N·cm |
| Slip Torque | 2.0 – 17.0 N·cm |
| Rotation Speed | 1 RPM |
| Material | Body case / Flange: Zinc die-cast Shaft / Spring: SUS304 Seal: Nitrile rubber, Silicone rubber (heat-resistant) |
| Operating Temperature | Inside tank: Max. 60°C Outside tank: Max. 55°C |
| Operating Pressure | Tank internal pressure: 0 – 30 kPa |
| Paint Color | Munsell 7.5BG4/1.5 |
| Lead Wire | VCTF 0.75 sq × 5C, 500 mm length (UL-compliant wire type also available) |
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