Piston Flow Switch Installation Diagram Guide

Here is the professional English translation of the ?Piston Flow Switch Installation Diagram Guide?, preserving technical accuracy and formatting:

?? ?I. Core Installation Standards?

Flow Direction Control?

Horizontal Installation?:

Water flow direction ?must strictly align? with the arrow indicator on the housing. Pipeline flange coaxiality error ≤ 0.5mm to prevent seal failure or measurement drift?.

Vertical Installation?:

Upward flow only? (Diagram: Arrow facing upward). Reverse installation causes piston failure due to sediment accumulation. Downward flow induces ?structural damage??.

Location & Accessories?

For upstream bends/valves, reserve a ?straight pipeline ≥4× pipe diameter? (Example: 200mm for DN50 pipe) to stabilize flow?.

Install an ?80-mesh filter? (Diagram: Y-strainer upstream) to block debris. Seal threaded joints with PTFE tape?.

? ?II. Typical Application Scenarios?

Fire Protection System?

Clamp-mounted on fire water pipes (Diagram: Flanged base with clamp):

Wiring: Brown → 24V DC (+), Black → (-), Blue/Yellow → Pump control terminal?.

Red LED lights up (≥20% flow), NO contact closes to activate pump?.

Industrial Cooling Cycle?

Vertical SS housing on cooling tower return line (Diagram: Pump discharge section), 100Bar rating:

Contacts linked to PLC. Alarm triggers when flow <15L/min?.

?? ?III. Commissioning & Maintenance?

Electrical Test?

Connect 24V DC (Red/Brown) → Gradually increase flow → Observe LED switch point (e.g., 20% range) → Lock adjustment screw?.

Periodic Maintenance?

Monthly: Clean filter & probe deposits.

Biannually: Recalibrate trigger point (±5% accuracy).

For corrosive media: Install titanium alloy sleeve?.

Note?: All diagrams emphasize ?flow direction compliance? and ?buffer zone reservation? to avoid turbulence. Post-installation dry-run test is mandatory (NC contact opens / NO contact closes)?.

Key Terminology:

同軸度誤差 → ?Coaxiality error?

過濾網 → ?Strainer?

生料帶 → ?PTFE sealing tape?

常開觸點 → ?NO (Normally Open) contact?

紊流 → ?Turbulence?

斷流測試 → ?Dry-run test?

This translation maintains critical technical parameters, safety symbols (??→?), and visual markers (??/??), ensuring readiness for international engineering documentation.