core standard

-European standards: EN 62885-2016, IEC 60312

-American standards: ASTM F558-21, ASTM F431

Must test air performance project (common in Europe and America)

1. Vacuum degree (suction)

-Maximum negative pressure measured with fully enclosed suction port (kPa)

-European standard: orifice plate method (10 levels aperture: 50 → 0mm)

-American standard: Rotating orifice plate, measuring inches of water column (inH ₂ O)

2. Air flow rate (air volume)

-Unit: L/s (Euro), CFM (US)

-Standard air duct+orifice plate throttling, measuring flow rate under different resistances

3. Input power and electrical parameters

-Voltage, current, input power (W), power factor

-American standard emphasizes 4-hour continuous operation at rated voltage

4. Inhalation power (air power AP)

-Formula: AP=Vacuum degree x Flow rate (W)

-Including maximum air power AP ₘₐₓ (peak)

5. Efficiency

-η=suction power/input power x 100%

-European standard: full curve efficiency; American standard: rated point efficiency

6. Characteristic curve

-Three dimensional curves of vacuum degree flow rate, power flow rate, efficiency flow rate

-European standard: 10 point complete curve; American standard: 8-point simplified curve

Key points of differences between Europe and America

-European standard (EN 62885)

-Orifice plate specifications: 10 levels (50, 40, 30, 23, 19, 16, 13, 10, 6.5, 0mm)

-Test status: hose+standard suction head, fully open → fully closed continuous test

-Report: Full curve+10 point data+energy efficiency level required

-American standard (ASTM F558)

-Orifice plate specification: 8-speed (2.000 → 0 inches), rotary type

-Test status: Pressure chamber+adapter, carpet mode dedicated nozzle

-Report: AP ₘₐₓ+rated point data+CFM/inH ₂ O