Aug 08 2017

An Analysis of the Difference Between Woltman Type Water Meter&Rotary Vane Water Meter

rp_280_257_67acfc4dd5178328bd34fc2cefb3f10f.jpgMeters are used to measure the flow of water. Water meters can be recorded for the consumption of tap, just put it on a meter. When someone is releasing water, the pointer on the meter or the wheel of the word will indicate the amount of the passage. This will also allow each user to clearly understand the amount of water they use, which can also save water. Therefore, the water meter has gradually entered every household. Today’s little series to introduce is the woltman type water meter and rotary-wing type water meter, below we together to analyze the difference between the two.
Woltman Type Bulk Cold(Hot) Water Meter

Introduction of the spiral-fin water meter

The rotor water meter is suitable for measuring the total amount of one-way flow of small-caliber pipes. such as the diameter of 15mm, 20mm specifications of the household water consumption measurement. The water meter mainly consists of shell, impeller measuring mechanism and deceleration mechanism, as well as the indicator table, with simple structure characteristics. There are many kinds, including mechanical designs without output. With signal output, with signal output is analog output, but also patented technology back-end digital design. In addition, the measurement principle of the rotary-vane water meter also has many kinds, for example, the flow-driven rotary wing drive gears to count. There are also some rotating wings to output 1 pulses per turn, followed by the circuit to statistics.
Upright Rotary Vane Wheel Removable Water Meter

Introduction of rotor water meter

Same as rotary-wing type Water meter (dn15-dn65), the spiral-winged water meter also belongs to a speed-type water meter. When the water into the meter, along the direction of the axial impact of the spiral vane impeller rotation outflow, the impeller speed and flow rate is proportional to the speed reducer after transmission, in the indicator device to show the total water through the meter.
Element Woltman Cold Water Meter
The difference between the woltman type water meter and the rotary-wing type water meter
Rotary-wing type water meter: rotary-vane meter is applicable to the measurement of the total amount of one-way flow of small-caliber pipe. such as the diameter of 15mm, 20mm specifications of the household water consumption measurement. The water meter mainly consists of shell, impeller measuring mechanism and deceleration mechanism, as well as the indicator table, with simple structure characteristics.
Horizontal woltman water meter: horizontal screw-wing meter used to measure the flow of large-flow pipeline total. Especially suitable for water supply and large mines. The main characteristics are large circulation capacity, small size, compact structure, easy to use and maintenance. The Spiral-winged water meter is generally used to measure the flow of large flow pipelines. So the general large enterprises and schools and so on will choose the spiral-wing type water meter, but the opposite is the rotary-wing-type meter is suitable for metering small flow of the total flow, so the household meters are generally rotary-wing meter. The use of water meters is also to do a supervision of our behavior, if you waste a lot of the waters, you will be responsible for this behavior. Therefore, it is necessary to use water meters widely.
Woltman Type Irrigation &Agriculture Water Meter

Products List:

Jul 18 2017

What’s the Difference Between the Intelligent Water Meter & the Common Ones

Intelligent water meter is a new type of water meter which uses modern microelectronics technology, modern sensing technology and intelligent IC card technology to measure water consumption and carry out water data transmission and settlement transaction.

Traditional water meters generally have only flow collection and mechanical indicators to show water consumption. Compared with the function, intelligent water meter is a big step forward. Except for the ability to record water consumption and display electronically, the intelligent meter can also control water consumption in accordance with the agreed number.


Advantages of Intelligent water meter

1. Intelligent water meter can record the water consumption and display the number;
2. Intelligent water meter can be control the water consumption in accordance with the agreed water consumption, and automatically complete the ladle water price calculation, while the water can be stored data storage function;
3. Intelligent water meter allows data transmission and transaction settlement through the IC card, with a convenient transaction, accurate calculation, the use of the characteristics of bank settlement.


  • Product Description
  • Magnetic interference display: The strong magnet will affect the collection of signals from water meters. In this case, the error code will be displayed in the screen.
    Low battery replacement. When the battery symbol is displayed. The internal battery needs to be replaced.


  • Product Description
  • Selected sensitive reed-type pluses
    Resistance to interference
    Keep its fundamental function as standard meter
    Consumption can be collected by remote transit with accurate and reliable reading
    Can be connected with computer , for management,

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Jun 16 2014

Ultrasonic water meter structure, working principle, the main technical parameters and Development

Ultrasonic water meter is the use of ultrasonic time difference principle, electronic water meter using industrial grade electronic components manufacturing and become. Compared with the mechanical water meter has high accuracy, good reliability, wide measurement range, long service life, no moving parts, no need to set parameters, features installed at any angle.

Ultrasonic  Water Meter


1, industrial process measurement and control

2, alternative to improve the reliability of mechanical flowmeter measurement.

3, to replace all kinds of pressed high performance flowmeter.

A brief description of ultrasonic water meter:

The initial flow rate is extremely low, the minimum flow rate of 0.01m/s

Ultra low power design, power consumption is less than 0.00055W

Battery can work continuously for 6 to 10 years

Using the ultrasonic sensor, no mechanical moving parts, 10 years of maintenance free design

Ultrasonic water meter can measure the two-way flow

The measurement pipe mould casting, to ensure no leakage

The measurement accuracy of ± 1%, ± 2%, ± 3%.

Ultrasonic water meter technical parameters:

The measuring principle: ultrasonic time difference principle, using low voltage multi pulse transmitting circuit, receiving circuit of double balanced noise suppression.

Test medium: water and Water Meter Mechanism, <10g/l suspended solid content, grain diameter <1 mm, liquid filled pipe.

The diameter range: DN15-1000mm full range of users with different diameter optional

Tube length: designed according to common water meter size

The measurement cycle: the default 3 seconds, 1 seconds to 31 seconds of user selectable.

Applicable temperature: ambient temperature -40 ℃ ~ 80 ℃ (LCD display -25 ℃ ~ 60 ℃)

Accuracy: ± 1%, ± 2%, ± 3% optional

Ultrasonic water meter precision repeatability is better than ± 0.5%:

Sensor: high-temperature wear-resistant ceramic sensor, suitable medium fluid temperature of -40 ℃ ~ 160 ℃

Protection class: IP68, die casting aluminum instrument case, 2 meters underwater work

Output: RS232, 4-20mA, M-BUS, RS485 standard GPRS, CDMA, GSM Short Message optional.

Supply mode: single 3.6V lithium batteries can work 6 years, matching battery can work for more than ten years, the normal working voltage 2.6V

Active 4-20mA power supply (two wire), without the battery can work normally

RS232 output when the host cut electricity, no batteries can work normally

The RS485 output to external 5V supply, without the battery can work normally

Jun 11 2014

Features Drinking Water Measuring Instrument( Water Meter), principles, introduction and use of traditional

Measurement of water flow meter. Mostly is the cumulative flow measurement of water. Generally divided into volumetric meter and velocity meter two. The accuracy is higher than, but the high requirement of the water quality, water containing impurities easily blocked. Recording water water meter, installed in the pipe, when the user when discharging water, table rotation pointer or wheel pointed out that through the water.

Drinking Water Measuring Instrument( Water Meter)

The internal structure of the traditional water meter from the outside to the inside can be divided into the shell, the inner core sleeve, three piece. The shell is made from pig iron, water inlet out through the lower part of the annular space shell, here called “ring room”. On top of the annular space of the “upper room” and the Drinking Water Measuring Instrument( Water Meter). One with a hole at the bottom of the filter sleeve, filter water impurities. The side of the sleeve has two rows of round holes, the hole position coincided with the shell on the annular chamber to, obviously, the lower is the water inlet, outlet row is. In particular, the two rows of holes are sideways along the tangential direction round. Note on two rows of holes in the opposite direction. Water from the discharge hole along the tangential direction of flow in, will form a rotating water flow, this is very important for water works. The inner core is divided into upper, middle, lower three layers, see from the glass of the window is the upper, only the pointer and dial. In fact, the key is lower, there is a plastic wheel, there are many plastic blade wheel, called “impeller”.

Impeller location right in the rotating stream formed by the lower hole of the casing, the impact of water flow blades, wheel torque is generated, so that the rotation of the impeller. The tap was greater, the more anxious, impeller will turn faster.

The impeller shaft vertical upward to the middle, there is a small gear on a shaft, use it and “decimal gear meshing, achieve” to total revolution. “The decimal number gear” role is when the single digit gears turn ten laps, ten digit gear will turn a circle. In other words, a digit gear rotates a circle, the ten digit gear will turn 1/10 times. A number of gear are active, rely on it to drive ten digit gear. In fact, every decade with two on gear, so that the rotation direction, wherein a pair of transmission ratio is 9:30, another is 10:30, the two together, the total transmission ratio is the two product, namely 0.099999, can approximate to 0.1. According to this calculation, if you want to read (seven digits before the decimal point read four black scale after the decimal point, read three red scale), have 12 pairs of gears. Plus some other purpose, in the middle and small space into 18 shaft and 34 gears, also can be a high density mounting. This type of meter with its simple and cheap, can be used without the need to repair in damp environment, without power supply, power failure does not affect the work of the advantages will still long service.

The term:

The minimum flow rate (Q1): showing the value of the maximum permissible error meets the minimum flow requirements of water meter.

The boundary flow (Q2): appeared in between, commonly used flow Q3 and minimum flow Q1 will flow range is divided into the two region specific maximum permissible error of “high” and “low” flow.

The commonly used flow (Q3): maximum flow rated working conditions. In this flow, water meter should work normally and meet the maximum permissible error.

Overload flow (Q4): water in a short time can meet the requirements of the maximum Rotary Volumetric Piston Water Meter, maximum flow in rated working conditions can still maintain the metrological characteristics.

Pressure loss (Δ P): at a given flow rate, head loss caused by the existence of water pipeline