Contact-Type High-Viscosity Level Switch with Anti-False-Alarm Design
1. Why You Need It
High-viscosity materials — adhesives, pastes, thick oils — are notorious for causing false level alarms, as residue and build-up trick ordinary switches into triggering. This contact-type high-viscosity level switch uses capacitive detection with a metal PEEK/316L structure and an anti-false-alarm design, plus a handheld device for visual level setting. With a fast 20 ms response and IP65 protection, it delivers dependable, noise-free level switching for viscous process media.
2. Working Principle
The switch detects high-viscosity material through capacitive sensing at its contact probe, switching the output when the medium reaches the set point. The sensitivity is adjustable, and the handheld device provides visual level setting so the operator can tune the switch point precisely. The PEEK/316L construction resists the viscous medium, while the 20 ms response time and IP65 rating ensure fast, reliable, false-alarm-free operation.
3. Key Advantages
- Contact-type high-viscosity detection
- Anti-false-alarm design
- Metal PEEK/316L structure
- Capacitive detection principle
- Handheld device for level setting
- Adjustable sensitivity
- 20 ms response time
- DC 12-24 V supply
- IP65 protection
- 100 mA max output current
Common Pain Points & Solutions
| Problem | Conventional Issue | Our Solution | Result |
|---|
| False alarms | Residue triggers switches | Anti-false-alarm design | Clean reliable switching |
| Viscous media | Floats and rods fail | Capacitive contact sensing | Reliable viscous detection |
| Level setting | Blind adjustment | Handheld visual setting | Precise, easy setting |
| Fast process | Slow switch response | 20 ms response | Real-time level control |
Application Cases
Industry: Adhesive
Application: High-viscosity adhesive tank
Medium: Adhesive / paste
Pressure Range: Atmospheric
Operating Temperature: 0 to 60 °C
Installation Environment: Adhesive plant
Customer Challenge: Reliable viscous level
Previous Problem: False level alarms
Solution: Anti-false-alarm switch
Installation Location: Adhesive tank
Result: Clean level switching
Industry: Food
Application: Thick paste / syrup tank
Medium: Paste / syrup
Pressure Range: Atmospheric
Operating Temperature: 0 to 70 °C
Installation Environment: Food plant
Customer Challenge: Viscous food level
Previous Problem: Float switch sticking
Solution: Contact level switch, IP65
Installation Location: Food tank
Result: Reliable food level
Industry: Chemical
Application: Thick oil / grease tank
Medium: Grease / thick oil
Pressure Range: Atmospheric
Operating Temperature: 0 to 60 °C
Installation Environment: Chemical plant
Customer Challenge: Grease level detection
Previous Problem: Sensor residue false alarm
Solution: Capacitive contact switch
Installation Location: Grease tank
Result: False-alarm-free detection
Industry: Cosmetics
Application: Viscous emulsion tank
Medium: Emulsion / cream
Pressure Range: Atmospheric
Operating Temperature: 10 to 40 °C
Installation Environment: Cosmetics line
Customer Challenge: Emulsion level control
Previous Problem: Unreliable sensor
Solution: Handheld-set level switch
Installation Location: Emulsion tank
Result: Precise level control
Technical Specifications
| Specification | Value |
|---|
| Product Type | Contact-type high-viscosity level switch |
| Detection Principle | Capacitive |
| Structure | PEEK / 316L stainless steel |
| Output Current | 100 mA max |
| Supply Voltage | DC 12-24 V |
| Response Time | 20 ms |
| Protection | IP65 |
| Setting | Handheld device / adjustable sensitivity |
FAQ
Q: What is a contact-type high-viscosity level switch?
It is a level switch that detects high-viscosity materials through direct contact capacitive sensing. Its metal PEEK/316L structure and anti-false-alarm design make it reliable in adhesives, pastes and thick oils where ordinary float switches fail.
Q: How does the anti-false-alarm design work?
The anti-false-alarm design prevents residue build-up and viscosity-related signals from triggering spurious switching. Combined with adjustable sensitivity, it ensures the switch fires only when the material truly reaches the set point.
Q: How is the level set?
The level is set using a visual handheld device, which lets the operator see the detection state and adjust the switch point precisely. The sensitivity is also adjustable for different media.
Q: What is the response time?
The response time is 20 ms, providing fast, real-time level switching. This is important for process control where the level must be detected immediately.
Q: What materials are used?
The structure uses PEEK and 316L stainless steel, providing corrosion resistance and durability in viscous media. This construction handles adhesives, pastes and thick oils without degradation.
Q: What is the protection grade?
It is IP65 rated, protecting against dust and low-pressure water jets. This makes it suitable for washdown areas and industrial process environments.
Q: What power supply does it need?
It operates on DC 12-24 V, a flexible range covering common industrial supplies. The maximum output current is 100 mA, sufficient to drive relays and PLC inputs.
Q: What media can it detect?
It detects high-viscosity materials such as adhesives, pastes, syrups, grease and thick oils. The capacitive detection and anti-false-alarm design suit sticky, residue-forming media.
Q: How is it installed?
It uses non-level installation, meaning it can be mounted in various orientations depending on the tank. The contact probe extends into the medium, and the output connects to the control system.
Q: Where is it used?
It is used in adhesive tanks, thick paste and syrup tanks, grease tanks and cosmetic emulsion tanks. It provides false-alarm-free level switching for high-viscosity process media.
