1. Features:
--Magnetic drive, protected against external magnetic tampering;
--Vacuum sealed register, frost resistant, keeps clear reading for long time;
-Brass body;
--Brass body can be painted
--External adjusting device,;
--For cold water;
--Remote transmission device can be added upon request
--Many kinds of sensors, such as Reed Switch, Hall and Weagand can be supplied upon request Pulse output may be 1l/pulse ,10l/pulse ;
--The meters conform to ISO4064 Standard Class B
2. Working condition:
--Water temperature≤50°c
--Water pressure≤1MPa (PN: 1.6MPa/16bar)
--ΔP≤0.1MPa(Class B)
--ΔP≤0.063MPa(R80/R100)
3. Accuracy:
From minimum flow-rate (qmin) inclusive, to transitional flow-rate (qt), exclusive:±5%
From transitional flow-rate (qt) inclusive, to overload flow-rate (qs), exclusive:±2%
Diameter (DN) | mm | 15 | 20 | 25 |
| flow ratio | Q3/Q1 | 80 ~ 100 |
| overload flow Q 4 | M3/h | 3.125 | 5 | 7.875 |
| permanent flow Q 3 | M3/h | 2.5 | 4 | 6.3 |
| transitional flow Q 2 | M3/h | 0.04 | 0.064 | 0.126 |
| Min flowQ 1 | M3/h | 0.025 | 0.05 | 0.063 |
| Pressure loss | MPa | ≤0.063 |
| Max.pressure | MPa | ≤1 |
| Water temperature | °C | 0.1--30 |
| readings | M3 | 0.0001 -- 9999 |
| Communication interface | M-Bus |
4. Installation And Usage
Select the right water meter according to nominal flow rate which is less than or next to the rate through the pipe. It is not a good way for the user to buy the water meter based on the pipe size.
The place to be installed should be free from sunshine, frost, pollutant and water. During the period of frost, the inlet valve in the meter should be closed and the outlet valve and water tap should be open except for being packed for thermal insulation, thus to prevent the damage from being frozen.
Meter should be installed horizontally, and the digits on the dial is up to the face and arrow direction in the meter should be same with the flow.
The stone, sand and slight impurities in the new installed pipe should be cleared off for the sake of the meter fault.
For the purpose of metering accurately, the water tap should be higher than the meter.
Water meter should be not connected with pipe and there are live interface (e.g. pipe interface, connection screw, sealing washer etc.) between the meter and pipe. The meter should not be damaged due to the over-stress caused by pipe and its elements during installation.
Wuhan Radarking Electronics Corp. is a high-tech corporation which established in 2002. As professional manufacture in meters, our mainly products including: Full Digital IC Card Prepayment Electronic Meters, Smart Electronic Meters, IC Card Prepayment Water Meters, Gas Meters as well as Meter (network) Reading System. We are one of the few manufacturers in Hubei Province whose annual production of electronic meters and water meters can be up to 2.4 million sets.
Employee: There are more than 200 employees including 50 technicians, 10 senior technical staff and 70 employees who have already got college degree, 30 of them obtained metrological verification certificate. Production and technical staff all undergo a rigorous pre-service training, who are skilled and have a strong sense of quality.
Technology: We have a R & D group of 20 persons (About 10% of the company's employees).
Equipment: We have 260 sets of production and testing equipments, including 7 production lines, more than 20 units of the calibration device such as wave soldering machine, reflow soldering machine, automatic placement machine, plug-in assembly lines, assembly lines, packing lines and etc, which have all meet the production requirement.
Material: Materials are in strict accordance with the requirements of the meters and the procurement of national standards, we have already established a qualified supplier evaluation system, and developed a series of test standard. All the materials have to pass strict test before entering into factory, and then be used in production. Measures have been taken to prevent damp and static electricity to ensure the normal performance of the raw materials.
Craft: To make a variety of electronic meters in accordance with the production process, we have developed process documents, to ensure the quality of the products.
Test: We have electronic meter laboratory and full range of test equipments, such as EMC Equipment (ESD, EFTB, SURGE, RF, Attenuation Oscillasion Impulse, DIP, Impulse Current, Pulsed Voltage and etc), Environmental Test Equipment (Alternating Temperature Humidity Test Chamber, Dust Test Devices, Waterproof Test Device, Shock Test Device, Vibration Test Device and etc), R&D Testing Equipment. We make a variety of electronic meters in accordance with the test and develop our test documents to ensure the quality of the products.
Environment: Our production base covers an area of 30 acres, and self-building workshop covers an area of 7000 square meters, production and storage area covers more than 5000 square meters.
Management: We have a high efficiency, innovative, serious management team, and the factory has already passed ISO9001-2008 QMS.
