Carlo Gavazzi Conductive Level Sensor 481046

Carlo Gavazzi VNY 4 NS/NT Conductive Level Sensor (Item No.: 481046)

2. Full Core Technical Specifications

3. VNY Series Full Model List

4. Replacement & Cross Reference

4.1 Same Brand Direct Replacement

4.2 Cross-Brand Equivalent Models

5. Application Industries & Typical Cases

Recommended Applications

1. Process Industry: Tank level monitoring in chemical, petrochemical and pharmaceutical industries to prevent overflow and dry running
2. Food & Beverage: Raw material and finished tank level control for beer, beverage and dairy production lines
3. Water Treatment: Level monitoring for sedimentation tanks and reaction tanks in waterworks and wastewater plants
4. Energy Sector: Level protection for cooling and lubrication systems in power plants and substations
5. Mechanical Manufacturing: Oil level monitoring for hydraulic and lubrication systems to avoid equipment damage
6. Marine Industry: Level measurement for ship ballast tanks, fuel tanks and fresh water tanks

Typical Application Cases

1. Chemical Plant Acid & Alkali Tank Level Control System

Application Goal: Monitor high/low levels of three 100m³ acid and alkali tanks to prevent overflow and pump dry running

Core Advantages: AISI316 corrosion-resistant electrodes; IP67 suitable for outdoor installation; 4-electrode enables multi-point level monitoring

System Configuration: VNY 4 NS/NT (481046) × 3 + ELA amplifier relay + PLC control system + HMI touch screen

Operation Effect: Level control accuracy ±1cm, false alarm rate reduced by 95%, maintenance cost cut by 60%

2. Automobile Factory Hydraulic Station Oil Level Monitoring System

Application Goal: Monitor oil levels of 5 hydraulic stations to ensure stable operation and prevent oil shortage failure

Core Advantages: Vibration-resistant screw terminal design; oil-resistant PBTP housing; field-cuttable electrodes adaptable to various tank heights

System Configuration: VNY 4 NS/NT (481046) × 5 + S196 amplifier + indicator light + buzzer

Operation Effect: Equipment failure rate reduced by 40%, maintenance cycle doubled

Not Recommended Applications

Non-conductive liquids: Such as pure oil, alcohol, acetone; not detectable by conductive sensors

High temperature >90°C: Adopt VPP series (up to 100°C) or high-temperature versions

Working pressure >10 bar: Special high-pressure level sensor required

Strong corrosive media: Concentrated hydrochloric acid, concentrated sulfuric acid; use VPP series with PVDF electrodes or anti-corrosion coated models

6. Installation & Wiring Guidelines

Installation Requirements

1. Mounting Position: Install on tank top or side, away from inlet ports and agitators; ensure vertical electrode immersion
2. Electrode Cutting: Cut electrode length on-site according to actual liquid level; deburr the end after cutting for accuracy
3. Sealing: Use suitable gaskets (PTFE recommended) for leak-tight installation to maintain IP67 protection
4. Earthing Requirement: Conductive tank body can serve as common electrode; non-conductive tanks require separate common electrode grounding
5. Spacing Requirement: Keep ≥50mm between electrodes and between electrodes and tank wall to avoid signal interference

Core Terminal Definition

Commissioning Key Points

1. Electrode Setting: Define corresponding level heights for each electrode (e.g. E1=Low, E2=Medium, E3=High, E4=Ultra-high)
2. Sensitivity Adjustment: Adjust amplifier relay sensitivity to avoid false triggering caused by foam or clinging liquid
3. Function Test: Simulate level changes to verify accurate switching action and response time
4. Insulation Check: For non-insulated type, ensure no short circuit between electrodes and tank wall; check insulation integrity for insulated type
5. Environmental Adaptation Test: Verify long-term stability within rated temperature and pressure range
6. Selection Rules & Quick Reference

Selection Guidelines

1. Liquid Type: Choose VNY series for conductive liquids; use capacitive or ultrasonic sensors for non-conductive liquids
2. Electrode Quantity: 1=single point, 2=high/low, 3=high/medium/low, 4=four-point full control
3. Electrode Insulation: NS for normal liquids; IS insulated type for viscous wall-adhering media
4. Connection Type: NT screw terminal for vibration environments; CB cable type for long-distance installation
5. Mounting Thread: 1 1/2″ for large tanks, 1″ for medium, 1/2″ for small containers
6. Temperature & Pressure: VNY for 0–90°C / 10 bar; VPP for higher temperature; special models for higher pressure
7. Air Freight Compliance & Certifications

Air Freight Compliance: No lithium battery / supercapacitor. Pure mechanical and metallic structure, compliant with IATA DGR Class 9, shippable as standard general cargo.

Certifications:

– CE: Compliant with IEC 529 ingress protection standard

– RoHS: EU RoHS compliant, free of hazardous heavy metals

– Material Certification: AISI316 stainless steel electrodes meet food-contact grade requirements for food & beverage industry

Environmental Compliance: Compliant with REACH regulations for global market access

9. Purchasing & Logistics Information