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:

同轴度误差 → ‌Coaxiality error‌

过滤网 → ‌Strainer‌

生料带 → ‌PTFE sealing tape‌

常开触点 → ‌NO (Normally Open) contact‌

紊流 → ‌Turbulence‌

断流测试 → ‌Dry-run test‌

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