Tube-11 High-Temperature Vibrating Rod Level Switch
Tube-11 High-Temperature Vibrating Rod Level Switch is built specifically for higher process temperatures up to 250°C (482°F).
Tube-11 High-Temperature Vibrating Rod Level Switch is built specifically for higher process temperatures up to 250°C (482°F). Tube-11 features the unique double-rods probe design that prevents buildup of material on the probe.
Tube-11 High-Temperature Vibrating Rod Level Switch is designed based on the standard Tube-11 model by adding an extension tube between the housing and the process connection, and features high-temperature resistant piezoelectric components and wires. Suitable for high and low level indication in light, fluffy materials. High temperature probe assembly for process temperature 250°C (482°F). The Ultra High-Temperature model is also available for process temperatures up to 400°C (752°F).
The operating principle is completely the same as that of the standard Tube-11 model. In terms of the structure, high-temperature model is assembled an extension tube between the housing and the process connection, so that the temperature in the housing can be reduced to a normal range where the electronic devices can tolerant. At the same time, all piezoelectric components that drive and detect the vibration are selected from high-temperature resistant piezoelectric ceramics, electrodes, wires, and encapsulant materials. These high-temperature designs ensure the instrument work reliably in process temperature conditions up to 250 ℃.
● First made-in-China Vibrating Rod Level Switch that is designed with double vibration rods.
● High sensitivity thanks to the fine adjustment on the resonant vibration frequency; suitable for virtually all applications in granular bulk solids. The innovative developed technology enables the sensor to detect fine-grained solids with density as low as 0.02 g/cm³.
● An industry leading product that can tolerate high process temperature up to 250℃, and ultra-high temperature up to 400℃ (Water/air cooling).
● Excellent in the precipitates interface measurement of liquids.
● Larger redundancy to avoid buildup and highly reliable for strong viscosity and adhesiveness medium.
● Strong self-diagnostic function to accurately locate the fault. Abrasion resistant and highly robust double-rods design.
● Unaffected by changes of product properties (maintenance-free).
● A number of options are available for customizing the meter to the needs of the user including a version to detect precipitates interface (separation layers) within a liquid.
● Easy installation and no calibration.
● With CE certificates, gas/dust Flameproof Enclosure and gas/dust Intrinsic Safety certificates, and IP66/IP67 Ingress Protection.
● Strong anti-corrosion probe with 316L and 318 S13.
| Applicable medium | Types of the medium | Granular or powdery solids ① |
| Density | ≥0.02g/cm³ | |
| Probe data | Vibration frequency | ~ 360Hz |
| Probe length | 125mm | |
| Probe diameter | 16mm | |
| Switching Delay | When immersed | 0.5s |
| When laid bare | 1s | |
| Power Supply | Relay | 20～253V AC/20～72V DC |
| Two-wire | 10～36V DC | |
| Max. Power consumption | 8VA(AC)； 1.5W(DC) | |
| Output | Relay | DPDT，5A/253V AC/24V DC |
| Two-wire | 8mA/16mA，Alarm <2.3mA | |
| Installation conditions | Process pressure | -1～16bar |
| Process temperature | Regular temperature: -50～150℃ High temperature: -50～250℃ Ultra-high temperature: -50～400℃ | |
| Ambient temperature | -40～80℃ | |
| Storage and transport temperature | -40～80℃ | |
| Cooling system data (for Ultra-high temperature only） | Air intake tube | 6×4 (Outer diameter 6mm) PU tube |
| Cooling air pressure | 0.8Mpa | |
| Min. cooling air flow rate | To be adjusted② | |
| Overvoltage protection | Relay | Category III, class I |
| Two-wire | Category III, class II | |
| Certificates and approvals | Ingress Protection | IP66/IP67 |
| Explosion-Proof | Flameproof Enclosure:：Ex d IIC T6～T1 Gb, Ex tD A21 IP66 T80～440℃ Intrinsic Safety：Ex ia IIC T6～T1 Ga, Ex iaD 20 T85～450℃ | |
| CE | LVD and EMC Certificates | |
| Materials | Housing | Aluminum alloy, stainless steel |
| Ground terminal | 316L | |
| Process connection | 316L | |
| Probe | 316L, 318 S13 | |
| Process seal | Klingersil C-4400 |
② Cover exhaust nozzle with whistle from instrument accessories and position the whistle such that whistle’s internal wall at its vent side is tightly attached to the external wall of exhaust nozzle, slowly increase the flow of cooling air until whistle blows up. This is when cooling air is at the expected minimum flow.
● Silo with mixture of CaSO₄ and CaSO₃ resulting from semi-dry desulfurizing reaction at a coal power plant.
● The problem of medium buildup has been successfully solved due to a larger redundancy.
● The fluctuation of humidity results in an unstable dielectric constant of the mixture of CaSO₄ and CaSO₃, but Jiwei Tube-11 Vibrating Level Switch could provide a reliable measurement in this situation because the measurement is independent of dielectric constant.
● Environment friendly fuel tank in combustion system at power plant.
The density of sawdust or straw is as low as 0.1g /cm3, which is out of range for most of level switches on the market. However, Jiwei Tube-11 successfully provided a reliable result in this situation, while Tube-11 can work reliably for medium density as low as 0.02g/cm3.
● Electrostatic precipitator bag, ash hopper and conveying pump in ash transport system at power plant.
The probe of Tube-11 is only 125mm long, significantly reduces the impact area from filling material and prevents the probe from impact damage.
● Alumina silo.
Alumina particles are lumpy, and extreme working conditions of strong magnetic field and harsh ambient. Alumina silo has high requirements for level measuring instruments, Jiwei Vibrating Rod Level Switches are able to offer maximum reliability.
● Coal bunker in ash collector (fly ash silo).
● PVC granule storage silo, and silo in packaging line at chemical plant.
● Activated carbon particles.
● Glass fragments.
● Powders and particles with process temperature in 400℃.
