DN50-D200 Fully Automatic Water Flow Calibration Device (Tube-Replacement-Volumetric Method+Standard Meter Method)

Water Flow Calibration Device, Urel ≤ 0.05% (k=2)

Flow Stability

1.0% for Start-Stop Method; 0.2% for Other Methods

Calibration Medium

Pure Tap Water

Operating Humidity

Humidity: ≤ 93% RH

Operating Water Temperature

20℃ ± 10℃

Water Temperature Fluctuation in Single Measurement

Water Temperature Fluctuation in Single Measurement

Water Fluctuation Coefficient in Single Cycle

≤ ±0.1%

Water Source Operating Pressure

0.0-0.5 MPa (Adjustable)

Air Source Operating Pressure

0.4-0.7 MPa

Device Operating Temperature

4˜50℃

Number of Meters Under Test

DN50: 3 units | DN65, DN80: 2 units | DN100, DN150, DN200: 1 unit

Water Pump

H=30 m; Q=1 m³/h; P=0.5 kW, 1 unit | H=30 m; Q=40 m³/h; P=7.5 kW, 1 unit | H=35 m; Q=200 m³/h; P=30 kW, 1 unit | H=30 m; Q=600 m³/h; P=75 kW, 1 unit

Water Tank

45 m³

Reverser

DN25, DN50, DN100 & DN200 Cross-Type Pneumatic Open Reversers, Low Noise & High Sensitivity, Stroke Difference < 10 ms, Uncertainty ≤ 0.002%

Meter Clamping Mechanism

Dual-Cylinder External-Push Tandem Meter Clamping Device; Single Pneumatic Clamping Device for 10 Front & 5 Rear Positions

Water Meter Tightness Test

Pressure Range: (0˜2.0) MPa

Nominal Diameter

Φ50 mm, Telescopic Stroke ≥ 80 mm

Timer

(10-100) kHz (Adjustable); Accuracy Better Than 10⁻⁶

Calibration Signal

Pulse, f = (0˜10) kHz

Vacuum System

Differential-Pressure Vacuum Generator, Vacuum Priming, Maintains Water Meters in Full-Water State

Supported Test Modes

Fully Automatic, Semi-Automatic, Touchscreen Manual

Data Acquisition Devices

3 Mobile Phones (40 Million Pixels, 8G/128G Storage)

Standard Device

Volumetric Method+Standard Meter Method

Flow Range

（0.010-630）m³/h

Calibration Methods

Start-Stop Method

Reversal Method

Flow-Time Method

Quantity

Electromagnetic Flowmeter
Standard Meter Standard
(0.2-0.3 Grade)

DN10:20-500L/H

1

DN40:2260-22600L/H

1

DN100 10-200m³/H

1

DN200 56.55-630m³/H

1

Volumetric Measuring Vessel
Volumetric Method Standard

50L-100L

1

1000L-2000L

1

5000L-10000L

1

This plan is for reference only; customized solutions can be provided according to customer requirements.