HT-A/B Type Portable/digital/cup anemometer

HT-A Type PortPortable/digital/cup anemometer 1. Accuracy: 0.1% 2. portable

HT-A/B Type Portable/digital/cup anemometer  

Introduction

HT type portable velocity flow meter (Portable velocity apparatus) is an equipment used in water conservancy for velocity flow measurement, designed for hydrological stations, mining factories, environmental monitoring stations, farm irrigation, hydrogeology and so on.

Portable velocity flow meter is composed of LS1206B spin paddle velocity sensor (or other type spin cup and screw propeller velocity apparatus), velocity measuring instrument and 0.4 m x 4  16 measuring bar. Full set of instruments are in the aluminum-alloy password boxes. When using, you can assemble it as a body and connect the signal line, then the velocity of every open channel can be measured. And it can automatically display the velocity and preset the flow of sectional areas.

The instrument is light and convenient with simple structure. It has low power consumption, complete function, high automation degree, stability and reliability, which complies with the national measurement standards. It is the new portable velocity measuring instrument in China.

Main Technical Parameter

                         (K/b)N

Speed Formula: V = ————— + C/a(m/s)( Automatic calculation) K/b ,C/a are constants               T                    

Speed Range: 0.05-7.00 m/s

Measuring Error: Less than 1.5%

Screen: 2 x 16 liquid crystal display

Measuring Method: Positioning measuring bar or suspended cable

Temperature Range: -10°C-45°C

Power Supply: DC5V

Measuring principles:

This instrument is designed based on the theory of areas of open channel’s velocity. After measuring the velocity, the flow can be get: Q=V•S(S is sectional area)

Velocity Measurement

When measuring velocity, the spin paddle type rotor flow meter will be pushed by waterpower. The built-in signal apparatus produces RPM signal. The formula below can calculate velocity:

                     (K/b)N

                 V=————— + C/a(m/s)

                         T

V: The average velocity (m/s)

B/K: The waterpower pitch of blades

C / a: Velocity constant

T: Lasting time (the unit is s)

N: The number of signals in T time

K/b and C/a are constants

When measuring, you can set T and then measure N, so the velocity and flow can be automatically calculated.

HT-B

 

 

 Main Technical Parameter

 

Diameter: 60mm   Pitch of Screw: H=120mm  Instruments’ Starting Speed: V0≤0.06m/s

 

Measuring Speed Range: 0.05-7m/s Verification Precision: Formula average variance m≤±1.2% 

When V<0.2m/s, relative error δ≤±5%  Signal Frequency: Two signals every time

 

Continuous Working Hours: 24h  Screen: 2 x 16 liquid crystal display

 

Measuring Method: Positioning measuring bar or suspended cable  

Temperature Range:-10°C-45°C

 

Communication: RS232

 

Instrument Calculation: Automatic calculation

 

Data Storage: 99 articles:

 

Power Supply: DC5V (four section #5 nimh battery), working for 40 hours or more after full electricity

 

 

HT-A/B Type Portable/digital/cup anemometer