High frequency type level switch
RLFS-35 type
- One unit can handle a wide range of objects to be measured. Compact and highly stable high frequency level switch.
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Sends a high frequency signal to detect and detect impedance changes. Compatible with various liquids, interfaces, and powders (excluding powders with light specific gravity). A wide range of measured objects can be detected from "conductivity to insulation" with this product. Can be detected materials with a dielectric constant of 1.5 or higher with high sensitivity and high stability.
■Supports high-viscosity adhesion and "cream paste".An extension type with a longer detection section is also available for installation on pipes.
Features, keys |Vdeos |Usage, use examples |Standard specifications
Features, keys
- Various measured objects can be detected by the latest technology
High frequency signals are transmitted from the electrodes, and impedance changes are judged intelligently. Not only liquids, interfaces and powders, but also high-viscosity liquids, claims and pastes can be detected.
- One unit of this product supports a wide range of measurement objects from conductivity to insulation.
Compatible with almost all liquids (from conductivity to insulation) and .Also supports powders and granules. (Excluding powder with a light specific density). - Easy adjustment and equipped with operation lamp.
Equipped with an operation indicator LED lamp. (Can be checked from outside the sensor) Easy adjustment with the included magnetic pen. - Ideal for compact and small containers and piping.
Its compact size allows it to be installed in small containers or inside pipes. - Also compatible with intrinsic safety explosion-proof.
Types compatible with intrinsic safety explosion-proof (ATEX) are also available.
A high-frequency signal is transmitted from the electrodes to capture changes in the impedance of the measured object.
Videos
The video explains "the operating principle of the high frequency level switch".Usages, use examples
- Detects the liquids and powders from conductive to insulating.
- Detects the interface of the liquid.
- Detects adhered liquids and paste objects to be measured.
Standard specifications
| Type | RFLS-35N（Non-explosion-proof） | RFLS-35Xi（Explosion-proof） |
|---|---|---|
| Input power source | 7 to 34 V DC | 8 to 9 V DC |
| Current consumption | 5mA or less | 1mA or less（OFF）、2.2mA or more（ON） |
| Output | NPN or PNP Max.300mA | －（Refer to the output of the barriers） |
| Sensitivity setting | Adjustment with a magnetic pen | Adjustment with a magnetic pen |
| Operating mode | Normal open or Normal closed | Normal open or Normal closed |
| Operating ambient temperature | Amplifier section：-40 to +80 degree Sensor section：-40 to +105 degree | Amplifier section：-40 to +80 degree Sensor section：-40 to +100 degree |
| Connection | G1/2 or G3/4 | G1/2 or G3/4 |
| Material | Amplifier section：AISI 316L Sensor section：PEEK（O-ring：Viton） | Amplifier section：AISI 316L Sensor section：PEEK（O-ring：Viton） |
| Protection class | IP68 | IP68 |
| Allowable pressure | 1MPa | 1MPa |
| Weight | 150g（Standard type, excluding cable） | 150g（Standard type, excluding cable） |
| Cable | 0.5mm2 PVC 3-core cable | 0.75mm2 PVC 2-core cable |
| Explosion-proof | － | ExⅡ1GExiaⅡBT5Ga |
Relay barrier
| Type | NDSU-822 |
|---|---|
| Number of connectable sensors | 2 |
| Power supply | 230V type：30 to 230V AC/DC 24V type：10 to 30V AC、10 to 40V DC |
| Power consumption | 230V type：4VA 24V type：4W |
| Threshold current | 1.55mA（±0.1mA） |
| Contact capacity（Relay type） | 230V type：250V AC 2A 100VA, 250V DC 2A 50W 24V type：40V AC 2A 80VA, 40V DC 2A 8W |
| Life of relay contact（Relay type） | Min 30×106 |
| Residual voltage（Transistor type） | 2V |
| Output characteristics（Transistor type） | 40V／50mA |
| Operating ambient temperature | -20 to +60 degree |
| Isolation voltage(Main terminal/output) | 3500V |
| Material | Polycarbonate (case) |
| Conection | 35mm DIN rail |
| Weight | Approx. 200g |
| Explosion-proof | Ex(1)G[ExiaGa]ⅡC ExⅡ(1)D[ExiaDa]ⅢC ExⅠ(M1)[ExiaMa]Ⅰ |
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