Unaffected by coating
Coating and accumulation of material on the sensor, sensing element or side walls does not change the reading.
Radio frequency
RF Level Switch
The probe senses a change in the electrical properties around it. The controller is mounted away from the process, making this useful where coating, dust or splashing can make other point switches unreliable.
- Power supply
- 220 / 110 / 24 VAC
- Relay output
- 5 A, 220 VAC
- Remote installation
- up to 100 ft
- Contacts
- SPDT / DPDT
Overview
When build-up makes level switching difficult
The probe senses a change in the electrical properties around it. The controller is mounted away from the process, making this useful where coating, dust or splashing can make other point switches unreliable.
The switch comprises two parts, a sensing probe and an electronic controller. The probe head is explosion proof to cover the terminals of the RF signal cable, and the probe contains no electronics or any other sensitive element. The controller may be inbuilt or separately housed in a dust proof enclosure suitable for outdoor duty, mounted at a convenient location near the sensor and connected through a coaxial cable.
Long insertions of sensors from the sides of a vessel are prone to damage from the mechanical forces of filling and extraction. This design accounts for that.
No temperature-sensitive element
The sensor does not carry an element sensitive to temperature.
Immune to turbulence
Unaffected by suspended particles, splashing or turbulence.
Clear local status
Local LED indications for Normal, Alarm and Healthy Probe, with fail-safe high or low level selection.
Features and specification
Probe and controller
| Construction | Two parts: a sensing probe and an electronic controller |
|---|---|
| Suitable media | Solids in granular form, fluids and liquids |
| Resistance | Coating, temperature, suspended particles, splashing, mechanical damage |
| Power supply | 220 / 110 / 24 VAC 50/60 Hz |
| Controller enclosure | Dust proof enclosure, suitable for outdoor duty |
| Probe connection | Connected to the controller through a coaxial cable |
| Relay output | SPDT / DPDT relay output, rated 5 Amp 220 VAC |
| Fail safe | High or low level |
| Local indication | LED indications for Normal, Alarm and Healthy Probe |
| Remote installation | Up to 100 feet from probe |
| Cable entry (probe) | 1/2" ET for probe connection or as specified |
| Cable entry (power) | 3/4" ET for power / control cable or as specified |
| Probe head | Explosion proof, covering the terminals of the RF signal cable |
The probe contains no electronics or other sensitive element, which is what allows it to sit in aggressive service and be replaced without recalibrating the loop.
Let us understand the material
Share the material, dielectric behaviour if known, temperature, pressure and probe length. We will confirm the probe and remote-controller arrangement.
- Fluid, specific gravity and concentration
- Flow or level range, and line size
- Operating pressure and temperature
- Material of construction and end connection
- Output, display and area classification