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Variable Area Flowmeters

Product catalog summary

Overview: The document provides comprehensive details on variable area flowmeters, which are utilized for measuring the flow rates of liquids and gases. These instruments are noted for their cost-effectiveness and accuracy.

Specifications: Flowmeters are available for both liquids and gases, with measurement scales in liters per hour (l/h) and cubic meters per hour (m3/h). The standard model features a Trogamid tube, U-PVC unions, and a floater made of stainless steel or PVDF. Special materials are available for specific fluids and conditions.

Features: All flowmeters include adjustable maximum and minimum set points. The flow rate is directly readable on the scale at the upper extremity of the floater. They can be equipped with minimum-maximum switches or transmitters if a magnetic floater is used.

Installation Guidelines: For systems with control valves, it is recommended that for liquids, valves can be placed upstream or downstream, while for gases, valves should be downstream to prevent compression oscillations. Valves should be operated slowly due to the floater's sensitivity to flow changes.

Technical Data: The document provides pressure/temperature ratings for water and non-hazardous fluids, indicating chemical resistance. It also includes information on pressure loss with different floaters and accuracy classes according to VDI/VDE standards.

Materials and Connections: Various materials are listed for different components, such as EPDM, FPM, Trogamid-T, and others. Connection types include threaded BSP and socket cementing options.

Additional Information: Diagrams and tables illustrate pressure variations with temperature, pressure loss data, and accuracy classes. Dimensions and weights for different flowmeter models are also provided.

Transmitter Specifications: The ZFT02486070 transmitter is compatible with FL type flowmeters with a magnetic floater, generating a 4 to 20 mA output signal with a maximum supply voltage of 40V. Calibration is done using two trimmers accessible by removing a screw and an O-ring.

Installation and Maintenance: The transmitter housing is mounted on the side of the flowmeter and secured with screws. Proper installation position is crucial, with the gland facing downward. Only qualified personnel should perform installation and maintenance. Periodic checks of seals and wiring connections are recommended despite the transmitter being maintenance-free.

Calibration Recommendations: Due to the linear output signal and non-linear input signal from the flowmeter, it is advisable to use 20% and 80% of the media flow rate as calibration points.

Transmitter Technical Data: The transmitter uses 50 Reed switches spaced 4 mm apart, with a total length of 200 mm. It operates with a continuous current and has an electrical input range from 10VDC + (0.02A*RLast) to 40VDC + (0.004*RLast). The electrical output is 4 to 20 mA, adjustable for both the lower value and the entire range. Connection is via a DIN 43650 plug with a PG9 gland, and it has an IP 65 protection rating. It complies with CE standards 93/465/EWG, 89/336/EWG, 73/23/EWG, and 93/23/EWG.

Components and Materials: The transmitter consists of a housing made of Fibron, a plug with a seal, an O-Ring 9x2, and screws made of steel.

Catalog excerpts

d diamtre extrieurnominal du tube en mm DN diam詨tre intrieurnominal du tube en mm PN PN pression nominale enbar (pression de servi- ce max 20頰C- eau) d nominal outside dia-meter of the pipe in mm R dimension nominale DN nominal internal dia-meter in mm PN Pabs nominal pressure inbar (max.working pressure at 20C - water) absolute pressure inbar > d diametro nominaleesterno del tubo in mm R nominal size of thethread d RohrauПendurchmesser DN diametro nominaleinterno in mm in mm g weight in grams DN Rohrnennweite inmm PN pabs pressione nominale inbar (pressione max di esercizio a 20C in acqua) pressione...

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FL-FC ZMS248606 > Microinterruttore diMIN.MIN. point controlswitchInterrupteur MIN.MINimumgrenzwertschalter Normalmente questo sensore usato come allarme di Minimo. Quando il galleggiante si trova al disopra del sensore,il contatto risulta aperto.(fig.1) Quando il galleggiante oltrepassa la posizione del sensore (dall਒alto verso il basso),il contatto verr chiuso.(fig.3)Ilcontatto sar mantenuto chiusofino al passaggio del galleggiante (dallࠒbasso verso lalto). Normally this sensor is used asMinimum alarm.When the floater is over the posi-tion of the switch,the contact isopen.(fig.1)When the floater...

Open the catalog to page 10

Materiale dei contatti:Rodio con gas inerte protettivoMax potenza di esercizio:10 Watt,12 VAMax tensione di esercizio:250 V AC/DCResistenza dei contatti:0.1 Mat橩riaux du contact:Rhodium avec gaz inertdeprotectionMax puissance:10 Watt,12 VAMax tension:250 V AC/DCRsistance:0.1 预 ƢĦ Resistenza disolamento contatti:10 > 11 ҢĦ Rsistance au guipage:10 > 11 预 Tempo di chiusura:2 msTempo di apertura:0.07 msFrequenza impulsi:2000 impulsi/secTemperatura:da - 40 a + 80ưCMateriale del corpo:tecnopolimeroConnessione:DIN 43650Protezione:IP 65 Max picco di corrente :0.5 A Max corrente:22 mA @ 220 V =45 mA @...

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Variable Area Flowmeters

Variable Area Flowmeters

Catalog excerpts

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