High Accuracy Good Repeatability Liquid NYWL-L Turbine Flowmeter
NYWL-L Turbine Flowmeter Working Principle
NYWL-L series turbine flowmeter is absorbed the advanced technology
of flow meters at home and abroad after optimization design, with
simple structure, lightweight, high accuracy, good reproducibility,
responsive, easy to install and maintain the use of a new
generation of turbine flowmeter, widely used in measuring closed
pipeline with stainless steel 1CraNigTi, 2Cris and corundum Alc0a,
hard alloy does not corrode. And no fibers, particles and other
impurities, working temperature kinematic viscosity of less than 5
× 10-6m3 / s liquid, for kinematic viscosity greater than 5 ×
10-6m² / s liquid, the flowmeter can be used after calibration of
the real liquid. If the display instrument with special functions,
can also be quantitative control, over-volume alarm, etc., is the
ideal instrument for flow measurement and energy saving.
The instrumentation coefficient of the sensor is derived from the
calibration of the flow calibration device, which does not ask the
internal fluid mechanism of the sensor at all, the sensor as a
black box, according to the input (flow) and output (frequency
pulse signal) to determine its conversion coefficient, it is
convenient for practical applications. However, it should be noted
that this conversion factor (instrumentation factor) is
conditional, its calibration conditions are reference conditions,
if the use of deviation from this condition coefficients will
change, the change depends on the type of sensor, pipe installation
conditions and fluid physical parameters of the situation.
NYWL-L Turbine Flowmeter Design Feature
1. High accuracy, generally up to ± 1% R, ± 0.5% R, high-precision
type up to ± 0.2% R.
2. Good repeatability, short-term repeatability of up to 0.05% ~
0.2%, it is because of good repeatability, such as frequent
calibration or online calibration can get very high accuracy, in
the trade settlement is the preferred flowmeter.
3. Output pulse frequency signal, suitable for total measurement
and computer connection, no zero point drift, strong
anti-interference ability.
4. Can obtain a very high frequency signal (3 ~ 4kHz), strong
signal resolution.
5. Wide range, medium and large diameter up to 1:20, small diameter
of 1:10, compact and lightweight structure, easy installation and
maintenance, large circulation capacity.
6. Applicable to high-pressure measurement, the meter body does not
need to open the hole, easy to make high-pressure type instrument.
7. Special sensor types, can be designed according to the special
needs of users for various types of special sensors, such as
low-temperature type, bi-directional type, downhole type, sand
mixing special type, etc.
8. Can be made into insertion type, suitable for large diameter
measurement, small pressure loss, low price, can be removed without
flow, easy to install and maintain.
NYWL-L Turbine Flowmeter Technical Parameters
| Typical application | liquid |
| Instrument caliber | Threaded connection; Flange connection |
| Measurement accuracy | ±1.0%R,±0.5%R,±0.2%R(Customizable) |
| Range Ratio | 1:10; 1:15; 1:20 |
| Sensor Material | 304 stainless steel, 316 (L) stainless steel, etc. |
| Media temperature | -20℃～+120℃ |
| Environment temperature | -20℃～+60℃ |
| Relative Humidity | 5% ~ 90% |
| Atmospheric pressure | 86Kpa～106Kpa |
| Signal output | Pulse signal, 4 ~ 20mA signal |
| Communication output | HART/RS485 |
| Power supply | External power supply: +24VDC±15%, ripple ≤±5 Internal power
supply: 2.0~3.0V |
| Signal line interface | Basic type, explosion-proof type |
| Protection/Explosion-proof grade | IP 67/ExiaⅡCT4 or ExdⅡBT6 |
