Background
In mid-2025, a leading engineering and supply company in Thailand approached us with a requirement for a replacement level switch for one of their chemical process clients. The existing level switch was installed in a tank containing 5% hydrochloric acid, and their team needed a reliable, corrosion-resistant solution compatible with their existing control system.
Client Challenges
The process medium was weak hydrochloric acid, requiring a wetted material with excellent chemical resistance.
The existing wiring system was 3-wire (L, N, PE), designed for direct relay coil switching without a NAMUR isolator.
The client required a quick delivery window to avoid process downtime.
Our Solution
After analyzing the application details and wiring diagram, we proposed the Ring-11 Tuning Fork Level Switch with the following configuration:
Output Type: Relay Output (Dry Contact, compatible with direct load switching)
Power Supply: AC220V or DC24V
Wetted Parts: 316L Stainless Steel with ECTFE/PFA coating for superior corrosion resistance
Process Connection: 2” ANSI 150RF Flange
Probe Length: 300mm
Housing: Anti-corrosive Nylon (IP66 rated)
We provided a clear wiring diagram tailored to their control panel logic, ensuring full compatibility with their existing setup without requiring any system modifications.
Outcome
✅ Order placed and payment received in July 2025
✅ Production and shipment scheduled within 10 days via UPS Express
✅ Client appreciated the technical support and fast turnaround, paving the way for further collaboration on future instrumentation projects.