Xi 'an Qinwei Instrument Factory (General Partnership Enterprise)
| Packaging Details | Carton or wooden box |
| Output function | NPN + PNPAlways open andclosed |
| Working voltage | DC12~24V |
| Supply Ability | 100PCS/Month |
| Probe material | 316L + Teflon |
| Protection | reverse, overload, short circuit |
| Payment Terms | Western Union,T/T,D/P,D/A,L/C |
| Probe output | 1M FEP coaxial cable |
| Response time | <1s |
| Delivery Time | 5-8 work days |
| Control box material | ABs |
| Current | <25mA |
| Detection medium temperature | -40-160°c |
| Medium | oil-based glue and other fluids |
| Model Number | WKCH2 series |
| Brand Name | QINWEIYB |
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Product Specification
| Packaging Details | Carton or wooden box | Output function | NPN + PNPAlways open andclosed |
| Working voltage | DC12~24V | Supply Ability | 100PCS/Month |
| Probe material | 316L + Teflon | Protection | reverse, overload, short circuit |
| Payment Terms | Western Union,T/T,D/P,D/A,L/C | Probe output | 1M FEP coaxial cable |
| Response time | <1s | Delivery Time | 5-8 work days |
| Control box material | ABs | Current | <25mA |
| Detection medium temperature | -40-160°c | Medium | oil-based glue and other fluids |
| Model Number | WKCH2 series | Brand Name | QINWEIYB |
| High Light | capacitive proximity switch for hot melt glue machines ，high temperature level sensor 200°C ，24V capacitive proximity switch with warranty | ||
Hot melt glue machines operate at high temperature, and the molten adhesive is both hot and sticky — conditions that destroy ordinary level sensors. This capacitive proximity level sensor is engineered for 200 °C high-temperature service, with a 316L + Teflon probe that resists heat and adhesion. It provides reliable glue level detection in hot melt machines, preventing dry-run and overflow in the melt tank.
The sensor detects the molten glue level by sensing capacitance change at the probe, switching its NPN/PNP output when the adhesive reaches the set point. The 316L stainless steel and Teflon probe withstand both high temperature and the sticky molten medium, while the FEP coaxial cable and ABS control box protect the electronics. A fast <1 s response and reverse/overload/short-circuit protection ensure dependable operation.
| Problem | Conventional Issue | Our Solution | Result |
|---|---|---|---|
| Hot melt glue machines | Sensors overheat | 200 °C rated design | Reliable at high temperature |
| Molten adhesive | Probes foul with glue | 316L + Teflon probe | Adhesion-resistant detection |
| Dry-run / overflow | No melt tank monitoring | High/low level switch | Prevents dry-run and overflow |
| Sensor electrical faults | Unprotected circuits | Reverse/overload/short protection | Robust, long-life operation |
| Specification | Value |
|---|---|
| Product Type | Capacitive proximity level sensor |
| Temperature Rating | 200 °C |
| Probe Material | 316L stainless steel + Teflon |
| Output | NPN + PNP |
| Supply Voltage | DC 12-24 V |
| Response Time | <1 s |
| Protection | Reverse / overload / short circuit |
| Control Box | ABS |
Q: What is a capacitive proximity level sensor?
A capacitive proximity level sensor detects the presence of material near its probe by sensing capacitance change, switching its output when the medium reaches the set point. For hot melt glue machines, it detects the molten adhesive level in the melt tank.
Q: Can it really handle 200 °C?
Yes. It is rated for 200 °C high-temperature service, making it suitable for hot melt glue machines where molten adhesive is held at elevated temperatures that would damage ordinary sensors.
Q: Why are 316L and Teflon used?
316L stainless steel provides structural strength and heat resistance, while Teflon (PTFE) resists adhesion from the sticky molten glue and withstands high temperature. Together they give a probe that survives both heat and adhesive build-up.
Q: What output does it provide?
It provides NPN and PNP dual output, compatible with both sinking and sourcing PLC inputs. This allows the sensor to interface with the glue machine's control system directly.
Q: What protection does it have?
It has reverse polarity, overload and short-circuit protection, plus a fast <1 s response time. These protections ensure dependable operation and prevent damage from electrical faults.
Q: What power supply does it need?
It operates on DC 12-24 V, a flexible range that covers common industrial supplies used in hot melt glue and packaging equipment.
Q: How does it prevent dry-run and overflow?
By switching at set high and low glue levels in the melt tank, it triggers alarms or feed control to prevent the tank from running dry or overflowing, protecting both product quality and the machine.
Q: What is the probe cable?
The probe output uses a 1 m FEP coaxial cable, which is heat-resistant and suitable for the high-temperature environment of hot melt glue machines. The control box is ABS for durability.
Q: How is it installed?
It is installed through the melt tank wall with the probe extending into the molten glue, and the cable routes to the ABS control box. The NPN/PNP output connects to the machine's PLC.
Q: Where is it used?
It is used in hot melt glue machines, hot melt adhesive applicators, bonding glue stations and edge banding machines. It provides reliable high-temperature level detection for molten adhesive.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Year Established:
Establishe
Total Annual:
5 million-10 million
Employee Number:
500~800
Ecer Certification：
Verified Supplier
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