Ring-21 High Temperature Compact Liquid Level Switch
Ring-21 High Temperature Compact Liquid Level Switch is particularly suitable as overflow protection or as pump protection for confined spaces in high temperature environments.
Ring-21 High Temperature Compact Liquid Level Switch is a lightweight and reliable vibration limit switch for liquids with a density of 0.7 g/cm³ or more. It is particularly suitable as overflow protection or as pump protection for confined spaces in high temperature environments.
Ring-21 High Temperature Compact Liquid Level Switch is based on fork resonant principle. When fork tines which vibrates in harmonic resonance immerses into fluids, vibrating frequency of the fork will greatly decrease, so does the output of piezoelectric detection device. An integrated circuit is designed to analyze signal from piezoelectric device and output a switching signal.
● Particularly suitable for pipelines and other applications in confined spaces and high temperature environments.
● Precise and reliable function due to product-independent switching point.
● With CE certificates. Economical, simple, high-performance, low-cost, and long-lasting.
● Robust design made of stainless steel (316L) assures highest durability
● Highly reliable because of detecting changed of vibrating frequency of the fork.
● Overfill protection and leakage detection.
● No mechanically moved parts, maintenance free.
| Applicable liquids | Density | ＞ 0.7g/cm3 |
| Flow Velocity | Max. 6m/s | |
| Fork data | Vibrating frequency | ~1200Hz |
| Fork length | 38mm | |
| Accuracy | Measurement error | ±1mm |
| Delay | 3.0±0.5mm | |
| Repeatability | 0.5mm | |
| Switching delay | When immersed | 0.5s |
| When laid bare | 1s | |
| Power supply | Relay | 85～253V AC |
| 10～35V DC | ||
| Transistor NPN/PNP | 10～35VDC | |
| Power consumption | AC<3.8mA；DC<825mW | |
| Installation conditions | Process pressure | -1～40bar |
| Process temperature | -50～150℃ | |
| Ambient temperature | -40～70℃ | |
| Storage and transport temperature | -40～80℃ | |
| Overvoltage protection | Relay | Category III, class I |
| Transistor NPN/PNP | Category III, class II | |
| Certificates and approvals | Ingress Protection | Valve connector：IP65 |
| M12×1：IP66/IP67 | ||
| CE | LVD and EMC Certificates | |
| Materials | Housing | 316L |
| Process connection | 316L | |
| Process seal | Klingersil C-4400 |
● Confined space applications.
● Pipelines in pump protection system.
● Level measurement and control with process temperature within 150 ℃ (302℉).
