Technical Description

Name: Ultrasonic Water Meter Calibration And Testing Bench DN15-DN50
Brand: S.H.Meters
SKU: 196247665

Automatic piston type gravimetric test bench.

Size: DN15-DN50

With Piston system, support min flowrate 2L/H, suitable for manufacturer & professional lab use.

Automatic calibrate water meter accuracy and create test report, support communication with most types water meter such as with Pulse/ RS485/ M-BUS etc signal.

Device Conﬁguration Selection Table

Model	SHA50-P-1
The main standard	Piston + Electronic scale
Flow range (m³/h)	0.002-32
Water pump	Grundfos/Ville
Maximum working pressure (bar)	16
Length of table to be inspected	DN15(165mm),DN20(195mm),DN25(225mm),DN32(225mm),DN40(225mm), DN50(225mm) (The length could be customized)
Piston speciﬁcations	Volume 22L, resolution 0.036ml, pressure PN16, Panasonic servo drive
Electronic scale	Mettler Toledo, 160K+1600KG
Weighing container	160L+1600L
Electromagnetic ﬂowmeter	Yokogawa AXG, 1DN2.5+DN25+1DN50
Commutator	DN25, DN50
Temperature sensor	PT100, accuracy class A installed at both inlet and outlet
Pressure sensor	Accuracy 0.5% installed at both inlet and outlet
Test method	Start stop method/Commutator method
Signal interface is standard	Pulse / MBUS / RS485/Image acquisition/Laser sensor
Equipment power	380V, 50Hz, 3 Phase 5Wire Power, 30KW(peak power)
Other Power	Pure water /6bar air pressure

Structural Principle
The device includes a water meter verification platform, an automatic identification control system, a standard container, fully automatic verification software, a computer, a printer, etc.
A camera is installed above each tested water meter, and its output video signal is directly input to the image acquisition card of the high-speed computer, and the computer software completes the processing of the image of the water meter plate and identifies the flow rate of the verified water meter.
The control box completes the data collection of standard containers and controls the opening and closing of multiple solenoid valves. During the verification period, the actual water volume is monitored in real-time, and the standard water level is measured after the water is automatically stopped, and the data is sent to the computer.
After the computer collects the image of the water meter dial, it uses image technology to identify the readings of each tested water meter and combines the data measured by the control box on the standard container to generate a water meter verification report through calculation, thereby realizing the automation of the entire process of water meter verification.
Feature
1. Accurate and objective
Based on the most commonly used "volumetric method verification", this device uses a camera instead of human eyes to read the pointer of the water meter. The automatic recognition accuracy reaches one-third of the minimum score of the water meter, and the automatic recognition rate is greater than 99%. This device is the water meter verification scheme with the highest degree of automation.
2. Advanced science
It integrates electronics, computers, and mechanical technology. Easy to operate, easy to use, and maintain.
3. Stable and reliable
Computers use today's advanced image processing techniques. This technology adopts a variety of fast mathematical algorithms to ensure the real-time reliability of image recognition, eliminate human errors, and improve the accuracy of the device.
4. Artificial Intelligence
The verification device realizes the automatic reading of the tested water meter and the standard container, the automatic switching of the flow rate, and the automatic calculation of the error after the verification and the formation of a printed report. The entire verification process is automatically completed, and the work of the verifier is simplified.
5. Strong data management function
The computer verification software equipped with the verification device automatically calculates according to the regulations and draws the verification conclusion. It can save all the water meter verification data and has complete database functions such as verification record query, statistics, and printing.
Technical Parameter
1. Detection range: dry and wet water meters with a diameter of 15-50mm.
2. Quantity of water meters to be tested: (double row in series) CT-W50 type: 12 DN15 water meters, 12 DN20 water meters, 12 DN25mm water meters, 1 DN40 water meter, and 1 DN50 water meter.
3. Standard container: accuracy level: 0.2%
4. Glass rotameter: accuracy ≤ 2.5%.
5. Accuracy of verification device: better than 0.2 level; image recognition rate ≥ 98%.
6. Image recognition error: less than 1/3 grid.
7. Detection input: 12 video signals; 8 water level signals.
8. Control output: 8 to 16 high-power relay outputs.
9. Data processing: automatically calculate according to the regulations and draw the verification conclusion, can save all water meter verification data, and has database functions such as verification record query, correction, statistics, and printing.
10. Working temperature: 0℃～50℃.