Roots flowmeter, also known asWaist wheel flowmeterIt is mainly used as a high-precision measuring instrument for continuous or intermittent measurement of gas or liquid flow in pipelines. It has the characteristics of high precision, good reliability, light weight, long service life, low operating noise, and easy installation and use. The waist wheel flowmeter can indicate on siteAccumulated trafficInstantaneous flow rate, single flow rate, etc., can also be outputPulse signal、4-20mAor1-5VAnalog signal485Communication4-20mA+HART、MODBUSAgreements, etc. The waist wheel flowmeter consists of a measuring chamber, a measuring rotor, a measuring component assembly (i.e. internal measuring element), and a counting indicator assembly. There is a measuring chamber inside the housing of the waist wheel flowmeter, which contains one or two pairs of waist wheels that can rotate tangentially (actually with a module of)2The gears, inFlowmeterA pair of drive gears are coaxially installed outside the shell with two waist wheels, which mesh with each other to enable the two waist wheels to interlock with each other.

Functional FeaturesFunctional Characteristics

1, high**Degree, generally accessible±1%R、±0.5%RHigh precision type can reach±0.2%RThe accuracy of imported products can reach a general level±0.1%High precision type achievable;
　　2Good repeatability, short-term repeatability can be achieved0.05%-0.2%Imported products can reach0.02%,It is precisely because of its good repeatability that it is preferred in trade settlement, such as frequent calibration or online calibration, which can achieve extremely high degrees of repeatabilityFlowmeterFlow meters are preferred for settlement;
　　3Maintain all valid data after power failure10Year not lost;
　　4Equipped with three-point correction of instrument coefficient, intelligent compensation of instrument coefficient nonlinearity, and capable of three-point correction of instrument coefficient, intelligent compensation of instrument coefficient nonlinearity, and on-site correction of instrument coefficient three-point correction; Make on-site corrections;
　　5Wide range, capable of reaching medium to large diameters1:20The small caliber is1:10Wide range;
　　6Compact and lightweight structure suitable for high voltage measurement, suitable for high voltage measurement, suitable for high voltage measurement instrument body without opening holes, instrument body without opening holes, on the body It is easy to make high-pressure instruments without opening holes; Easy to produce high-voltage instruments;
　　7Compact and lightweight structure, easy installation and maintenance, and high circulation capacity; Compact and lightweight structure, easy installation and maintenance, and high circulation capacity;

technical parameterTechniques Parameter

Environmental temperature:-30℃-+60℃Medium temperature:-20℃-+250℃

Relative humidity:5%-95%atmospheric pressure：70Pa-106kPa

Nominal diameter：DN25-DN600If there are special requirements, larger calibers can be providedFlowmeter.

Flow range:1-10000m3/h

Nominal pressure：0-4MpaIf there are special requirements, a flow meter with higher pressure can be provided.

Repeatability: superior to0.3%

Accuracy:±1.0%or±1.5%

Explosion proof grade：ExiallBT4

Protection level:IP65