High sensitivity with dielectric constant as low as 1.1
Ignores coatings and build up
Detects solids, liquids, and interface of two immiscible liquids
** If purchasing replacement part, just give us the serial number and we will supply the correct part.**
General Description
The KRV series of capacitance sensors are designed for point level detection of liquids, solids, powder, or interface between two immiscible liquids. Radio Frequency sensors are typically used to detect liquids, but have a difficult time with solid or powder mats rials. The KRV series overcome this limitation by having a parallel LC circuit on its oscillator and five switch selected sensitivity ranges. The KRV series easily detect solid and powder materials such as plastic powder/pellet, fly ash, carbon black, and similar substances. The KRV series reliably detect the interface between two immiscible liquids, oil and water as an example. The KRV can be set to operate in water but not in oil. Additionally, the KRV will ignore heavy oily build up on its electrode.
Operational Description
When the electrode is in free air, the oscillation circuit synchronizes with the detection circuit. When the electrode is in the medium, the synchronization between the oscillation circuit and the detection circuit breaks with the capacitance of the medium being taken in. This difference is then converted into the relay output.
Sensitivity Settings for Applications
"A" sensitivity: 0.5PF to 5PF. ∞ to 100Ω < 0 For solids and liquids such as Aluminum powder, Calcium carbonate, Cement, Fly ash, Ink, Paint, Plastic resin, etc.
"B1" sensitivity: 2PF to 5PF, 1OOkΩ to 50Ω For solids and liquids such as Coffee powder, Feed, Flour, Oil, Starch, etc.
"B2" sensitivity: 5PF to 10PF, 50kΩ to 30kΩ For solids and liquids such as Grain, Sand, Sugar, Water, etc.
"C" sensitivity: 200PF to 1000PF, 2kΩ to 200Ω For liquids and slurry such as Dehydrated cake, Drainage, Night soil, Sewage, Slurry, etc.
"D" sensitivity: 4000PF to 5OOOOPF, 500Ω to 2Ω For liquids such as Chemical slurry, Quicklime (liquid), etc.
Note: Normally, NOHKEN will set the proper sensitivity range before shipment in accordance with your specified medium when ordering.
Click on the buttons for full Nohken Specification catalog Sheet and User Manual
