Hypertherm 229235 Online Flow Switch Flow Sensor Flow Switch Subassembly IP65 Rating

Hypertherm 229235 Online Flow Switch Flow Sensor Flow Switch Subassembly

1. Overview of the Hypertherm 229235

The Hypertherm 229235 is an in-line flow switch and flow sensor. With a monitoring accuracy of 0.6 GPM (≈2.3 L/min), it acts as a "flow sentinel" in the plasma power supply's cooling circuit. A slight drop in water pressure or a slight slowdown in flow rate triggers an immediate alarm and shutdown, protecting the expensive torch and power supply from dry burns. The RTR quick-connect plastic hose connector is plug-and-play, and dual digital/analog outputs convert real-time flow into a 4–20 mA signal readable by the PLC. On-site commissioning can be completed in just ten minutes.

2. Core Features:

• Type: In-line flow switch/flow sensor
• Flow range: 0.6 GPM ≈ 2.3 L/min (23 L/min is the system's maximum flow capacity, with a trigger value of 2.3 L/min)
• Connection: RTR push-in tube connector
• Output signal: Digital switch + analog 4–20 mA (dual output)
• Power supply: 24 V DC (typical)
• Accuracy: ±5 % F.S.
• Media: Coolant, deionized water, or compatible fluids
• Operating temperature: -20 … +60°C
• Protection rating: IP65 (enclosure seal)
• Material: Engineering plastic housing, FKM seal
• Applicable system: HPR400XD® automatic gas plasma cutting system

Real-time flow monitoring: An alarm is immediately output when the cooling flow rate falls below 2.3 L/min, preventing torch overheating and damage.
Dual signal output: A digital switch output can be used for direct shutdown interlock, and a 4–20 mA output provides real-time flow curve reading to a PLC.
Maintenance-free design: No mechanical impeller, Hall effect sensing technology, pollution resistance, and long life.
Quick-connect installation: Simply insert the RTR connector to connect the piping, reducing equipment downtime for maintenance.

Typical Applications
• Cooling circuits for Hypertherm plasma cutting machines such as the HPR400XD, HPR130, and HPR260
• Flow protection upgrade for converting handheld Powermax systems to machine operation
• Flow alarms for high-purity water cooling plates and laser cutting cooling units in semiconductor plants

3. Product details pictures

4. Related products