| Device Uncertainty |
Urel≤0.2%(k=2) |
| Flow Stability |
1.0% for start‑stop method; 0.2% for other methods |
| Test Medium |
Purified tap water |
| Operating Humidity |
≤ 93% RH |
| Operating Water Temperature |
20 ℃ ± 10 ℃ |
| Water Temperature Fluctuation in Single Measurement |
Water temperature fluctuation in a single measurement |
| Water Fluctuation Coefficient per Cycle |
≤ ± 0.1% |
| Water Source Working Pressure |
0.0–0.5 MPa, adjustable |
| Air Source Working Pressure |
0.4–0.7 MPa |
| Device Operating Temperature |
4–50 ℃ |
| Number of Meters Under Test |
DN50/65/80/100: 5 pcs | DN125/150/200: 2 pcs | DN250: 1 pc | DN300: 1 pc |
| Water Pump |
1 pc (CM10‑10): H=40 m, Q=10 m³/h, P=2.2 kW 1 pc (TD50‑40G2/4): H=40 m, Q=100 m³/h, P=18 kW 2 pcs (TD300‑40/4): H=36 m, Q=1200 m³/h, P=110 kW |
| Water Tank |
150 m³ |
| Commutator |
DN15, DN25, DN50, DN100, DN400 cross‑fork pneumatic open commutator; low noise, high sensitivity; travel difference < 10 ms; uncertainty within 0.002% |
| Meter Clamping Mechanism |
Stainless steel pneumatic meter clamp |
| Water Meter Seal Test |
Pressure range: (0–2.0) MPa |
| Bore Diameter |
Φ50 mm, telescopic stroke ≥ 80 mm |
| Timer |
(10–100) kHz (adjustable); better than 10⁻⁶ |
| Calibration Signal |
Pulse signal, f = (0–10) kHz |
| Vacuum System |
Differential pressure vacuum generator; vacuum water filling to keep water meters fully filled |
| Supported Operation Modes |
Fully automatic, semi‑automatic, touchscreen manual operation |
| Acquisition Equipment |
7 sets of pulse collectors, 7 sets of RS232/RS485 serial ports, 7 sets of camera meter collectors |
| Standard Device |
Volumetric Method + Master Meter Method |
| Flow Range |
(0.010-2100)m³/h |
| Calibration Method |
Start‑stop method |
Diversion method |
Flow–Time Method |
QTY |
Electromagnetic Flow Meter Instantaneous Flow Display Advanced (Class 0.5) |
DN6 50-500L/H |
1 |
| DN15 320-3200L/H |
1 |
| DN40 2260-22600L/H |
1 |
| DN100 10-200m³/H |
1 |
| DN300 127-1100m³/h |
2 |
Electromagnetic Flow Meter Standard Meter Standard (Class 0.2–0.3) |
DN6 50-500L/H |
1 |
| DN15 320-3200L/H |
1 |
| DN40 2260-22600L/H |
1 |
| DN100 10-200m³/H |
1 |
| DN300 127-1100m³/h |
2 |
Volumetric Vessel Volumetric Method Standard |
15L |
1 |
| 60L |
1 |
| 600L |
1 |
| 3m³ |
1 |
| 30m³ |
1 |