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
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| 228334 – 0.6 GPM | 228412 – 1.0 GPM |
| 228413 – 1.5 GPM | 228414 – 2.0 GPM |
| 228534 – 0.8 GPM | 228688 – 0.5 GPM |
| 228688 – 0.5 GPM | 228718 – 0.6 GPM |
| 228719 – 1.0 GPM | 228720 – 0.6 GPM |
| 228721 – 0.4 GPM | 228722 – 0.6 GPM |
| 228723 – 0.6 GPM | 228724 – 0.6 GPM |
| 228725 – 0.6 GPM | 228726 – 0.6 GPM |
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Hypertherm 229235 Online Flow Switch Flow Sensor Flow Switch Subassembly IP65 Rating Images
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