The combination of HecoFill limit value probe and Level Controller (NK) for fail-safe control and monitoring of limit levels in the tank.
The combination of Level Controller (NK) and HecoFill limit value probe sets standards and offers a high degree of safety during the storage and transfer of hazardous liquids.
This is due to the fact that level controller and limit value probe form an Ex-intrinsically safe circuit, work in a fail-safe mode and can be universally supplied. The limit probe is approved for use in zone 0. The permanent self-surveillance with liquid-analogue remote check up to the probe tip ensures a reliable surveillance of liquid limit levels.
The devices and probes are ATEX-approved and meet the requirements of the KVU (CH) as special fill protections and of the WHG (D) as overfill protection.
Data Sheet: HecoFill Probe & Level Controller NK411/NK412 (614 KB)Your Benefits
- High degree of safety by permanent self-monitoring
- Independent of medium, density, conductivity or temperature
- No calibration required
- Almost maintenance-free as there are no movable parts in the tank resp. probe
- Wide application range
Typical Applications
- Tanks / manholes
- Depots / collection trays
- Process technology
Technical Data
| Electrical connection | A - blue B - black C - green Probe connection via 3-pole probe cable 3 x 0.75 mm², blue that meets the following conditions: Wire diameter: ≥ 0.1 mm, test voltage: ≥ 500 V, insulation thickness: ≥ 0.2 mm |
| Device connection | Hectronic Controllers NK 311/312/313/411/412 (HecoFill HL and HH) Isolating switch amplifi er (NAMUR) according to EN 60947-5-6 |
| Probe circuit | Intrinsically safe [Ex ia Ga] IIC |
| Environmental temperature | EX: -20 °C to +60 °C/NON-EX: -30 °C to +80 °C |
Technical Data - Level Controller NK
| Supply network | 20 to 253 VAC, 50 to 60 Hz, 2 W 22 to 253 VDC |
| Connection | Screw terminals, max. 2.5 mm² |
| Environmental temperature | -25 °C to +60 °C |
| Environmental conditions | Use inside buildings Installation location up to 2,000 m altitude Relative humidity 25 to 95 % (non-condensing) Pollution degree 2 (according to EN 61010) |
| Carrier rail housing | Protection class: IP20 Material: ABS Dimensions: W 35 mm, H 100 mm, D 115 mm |
| Approvals | IECEx, ATEX, KVU, WHG |
Variations
- HecoFill Limit Probe
Optoelectronic measuring principle for the surveillance of liquid limit levels in the tank - HecoFill Leak Probe
Valuable for damage prevention: Detection of leaks in tanks, conduits or shafts For installation in tank rooms, collection trays for pipings or in dome shafts