SIS Series Sanitary Intelligent Level Switch

Introduction – SIS Series Sanitary Intelligent Level Switch

The SIS Series Sanitary Intelligent Level Switch is a hygienic, high-precision sensing solution designed for accurate high/low level detection in tanks and pipelines. Using frequency sweep technology, the sensor emits an electric field and detects resonance frequency changes produced by different media, generating a precise switching signal. This makes it suitable for a wide range of materials including liquids, viscous media, and powders.

Engineered for use in food, beverage, and pharmaceutical production, the device is compatible with CIP and SIP cleaning processes. Its durable stainless-steel housing and customizable surface roughness (Ra < 0.8) provide hygienic performance for sanitary environments. The compact design allows installation in confined spaces or areas with challenging operating conditions.

Real-time diagnostics are enabled through LED indicators and a magnetic test function, while overload and short-circuit protection enhance operational safety. The SIS Series offers independently adjustable dual outputs, enabling detection of two different media types such as oil and water.

Available through Dubai Sensor, the switch supports hygienic processing requirements for facilities in the UAE and MENA region.

Key Features & Benefits

• Frequency sweep detection for reliable switching in different media.
  
• Compatible with CIP and SIP cleaning processes.
  
• Compact size suitable for narrow or difficult installation spaces.
  
• IP67, IP68, and IP69K protection grades.
  
• Stainless steel wetted materials (SUS316 / SUS316L).
  
• PEEK or PEEK-1000 probe materials depending on configuration.
  
• Customizable hygienic surface roughness (Ra < 0.8).
  
• LED indicators for real-time operation monitoring.
  
• Magnetic test function for wiring and operation checks.
  
• Overcurrent, short-circuit, reversal and over-voltage protection.
  
• Dual outputs with independent sensitivity settings.
  
• Supports water-based media, oil-based media, viscous media, and powders.
  
• Unaffected by foam and viscous materials.
  
• Suitable for pump dry-run protection.
  
• Available in Standard, Extension, Mini, and Rear-install types.
  
• Optional NEPSI Ex tD explosion-proof certification.
  

Technical Specifications – SIS Series Sanitary Intelligent Level Switch

Standards & Certifications

• IP67 protection
  
• IP68 protection
  
• IP69K protection
  
• IEC61000-4-2
  
• IEC61000-4-4
  
• IEC61000-4-11
  
• Optional NEPSI Ex tD A20 IP67 T85°C / T100°C
  

(All certifications listed exactly as provided in the datasheet.)

Applications & Industries

Applications:

• High/low level alarm in tanks and pipelines
  
• Empty material alarm
  
• Pump dry-run protection
  
• Single-point level measurement for liquids, semi-liquids, and powders
  

Industries:

• Food manufacturing
  
• Beverage manufacturing
  
• Pharmaceutical manufacturing
  

The hygienic design and sanitary finish support compliance in facilities across global markets, including installations within the UAE and MENA region.

Installation, Commissioning & Maintenance

• Avoid installing in areas where strong viscosity or sediment may collect, as residue can cause faulty switching.
  
• For top-mounted installations, the rear-install type with an auxiliary extension rod can reach lower detection points (auxiliary rod not included).
  
• The auxiliary rod helps minimize bridging in sediment-heavy media.
  
• Always use FineTek-approved thread connectors or adaptors to ensure sealing and proper structural support.
  
• M12 cables must match the protection level for explosion-proof models (NEPSI-approved cables required).
  
• LED indicators assist in verifying operational status during commissioning.
  
• Magnetic test function can confirm wiring and switching behavior without removing the sensor.
  

Why Choose SIS Series Sanitary Intelligent Level Switch

Engineered for hygienic industries, the SIS Series combines sanitary materials, robust protection ratings, and advanced frequency sweep technology to deliver reliable and accurate level detection. Its ability to handle water-based, oil-based, viscous, and powder media makes it a versatile choice for modern processing facilities.

With multiple rod types, process connections, probe materials, and explosion-proof options, the SIS Series provides configuration flexibility to match diverse application requirements. Backed by Dubai Sensor, it offers strong regional availability and technical support for customers throughout the UAE and MENA industrial sector.

Ordering Guide

When ordering the SIS Series, specify the following parameters:

1. Output Type: PNP or NPN
   
2. Output Function: NO/NC configuration (A–D)
   
3. Medium Type: Water-based / Oil-based / Viscous / Powder
   
4. Wetted Material: SUS316 or SUS316L
   
5. Rod Type: Standard / Extension / Mini / Rear-install
   
6. Rod Length: According to application (29 mm, 47 mm, 72 mm, etc.)
   
7. Probe Material: PEEK or PEEK-1000 (for Ex tD)
   
8. Certification: Standard or NEPSI Ex tD
   
9. Process Connection: G 1/2" or M32 × P1.5 (rear install only)
   

For procurement and technical coordination, the SIS Series Sanitary Intelligent Level Switch is supported by Dubai Sensor as an official distributor.

FAQ – SIS Series Sanitary Intelligent Level Switch

Q1: What is the working principle of the SIS Series Sanitary Intelligent Level Switch?
A1: It operates using frequency sweep technology. The sensor tip emits an electric field, and different media create different resonance frequencies, which generate a switching signal.

Q2: Can the switch detect different types of media?
A2: Yes. It can measure liquid, viscous, and powder media. It supports dual-output detection and can differentiate between two media types, such as oil and water.

Q3: Is the device suitable for hygienic applications?
A3: Yes. It is designed for use in pharmaceutical, beverage, and food manufacturing and is compatible with CIP and SIP cleaning processes. The surface roughness (Ra) can also be customized to hygienic requirements.

Q4: What protection ratings does the device have?
A4: It offers IP67, IP68, and IP69K protection ratings. Explosion-proof versions with NEPSI Ex tD certification are also available.

Q5: Can it operate reliably with foam or viscous materials?
A5: Yes. The switch is designed to be unaffected by foam or viscous media.

Q6: What installation limitations should be considered?
A6: It should not be installed where the medium has strong viscosity or sediment buildup, as residue may cause false signals. In such cases, a rear-mounted type with an auxiliary rod is recommended.

Q7: What rod types are available?
A7: Four types: Standard, Extension, Mini (non-explosion-proof), and Rear Install type.

Q8: Is real-time monitoring available?
A8: Yes. The device includes LED indicators for live status monitoring and a magnetic test function for verifying wiring and operation.

Q9: What is the temperature capability?
A9: Most versions support up to 100°C continuously and 150°C for short durations. Mini type supports up to 135°C. Explosion-proof and rear-install types have separate specified ranges.

Q10: Can the device be used for pump dry-run protection?
A10: Yes. It is suitable for pump dry-run protection in tanks and pipelines.