DN15-D25 Fully Automatic Water Flow Calibration Device (Mass 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

DN15: 10 units | DN20: 8 units | DN25: 6 units | Vertical Water Meters (DN15, DN20, DN25): 6 units

Water Pump

Nanfang CHM10-50, Flow Rate: 8 m³/h, Head: 48 m, 1 unit

Water Tank

800 L

Reverser

DN25 Cross-Type Pneumatic Open Reverser, 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

16 Mobile Phones (Camera Resolution ≥ 40 Million Pixels)

Standard Device

Mass Method

Flow Range

（0.010-8）m³/h

Calibration Methods

Start-Stop Method

Reversal Method

Quantity

Rotameter
Instantaneous Flow Display
Basic (Grade)

LZ/W30-15 4-90L/H

1

LZ/W30-25 20-500L/H

1

LZ/W30-50 500-8000L/H

1

Electronic Scale
Mass Method Standard

①Max=30kg，6000e

1

②Max=150kg，15000d

1

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