Series_COVOL_Oscillating_piston_Positive_Displacement_flowmeter
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Catalog excerpts

Series_COVOL_Oscillating_piston_Positive_Displacement_flowmeter - 1

Oscillating piston flowmeters Series COVOL Positive displacement flowmeter for liquids            Suitable for all kind of liquids Viscosity up to 120000 mPa·s Excellent performance with changing process conditions Easily cleaned and sterilized Available with materials and connections suitable for hygienic applications Bidirectional flow measurement and installation in all flow directions Special design for high pressure available Flow rate: 25 l/h ... 60 m3/h Accuracy: ±0.8% measured value Repeatability: ±0.3% Connections: - EN 1092-1 flange DN10 ... DN100 Other flange standards on request - Threaded connections BSP or NPT - Sanitary couplings according to ISO 2852, SMS 1145, DIN 11851, TRI-CLAMP® Materials: - Body: EN 1.4404 (AISI 316L), PVC, PP, PTFE - Piston: PTFE+graphite, aluminium, bronze, PVDF - Gaskets: NBR / PTFE / EPDM / Viton® / Silicone Potential free reed switch output Optional: - Flow indication, local or remote - Volume totalizer, local or remote - Electronic transmitter with 4-20 mA analog output. HART protocol available on request - V

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Series_COVOL_Oscillating_piston_Positive_Displacement_flowmeter - 2

Working principle By means of oscillating piston and an annular measuring chamber.  Chemical and petrochemical industry  Tank filling and batching applications  Measurement of steam condensates in boilers 1– The first figure shows the COVOL flowmeter at the beginning of a cycle, when the measuring chamber (in blue) is completely full.  Burners, measurement of fuel consumption Technical data  Accuracy: ±0.8% measured value  Repeatability: ±0.3% 2– The flow of the liquid through the flowmeter makes a force on the oscillating piston, so that it starts turning. From this moment the...

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Series_COVOL_Oscillating_piston_Positive_Displacement_flowmeter - 3

Oscillating piston flowmeters Series COVOL Mounting Both in horizontal and vertical position, bidirectional flow measurement and suitable for all flow directions. Straight pipe run before and after the flowmeter is not required. In order to assure the good performance of a COVOL flowmeter, the installation of a filter prior to the unit is mandatory, with a mesh size between 0.5 and 1 mm, according to the pipe diameter (smaller sizes involve a smaller mesh size). In those processes where air or gases, liquid evaporation, etc. might be present, an air/steam separator must be installed before...

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Series_COVOL_Oscillating_piston_Positive_Displacement_flowmeter - 4

Available for DN100 with special design. Please consult factory COVOL-H DN10 / ¼” low flow, horizontal

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Series_COVOL_Oscillating_piston_Positive_Displacement_flowmeter - 5

Oscillating piston flowmeters Series COVOL Threaded connection BSP/NPT * Other sizes on request All dimensions in mm Sanitary couplings CLAMP ISO 2852 connection DN * OD: pipe Øext according to ISO 2037 Other standards on request (DIN 32676,TRI-CLAMP®,...)

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Series_COVOL_Oscillating_piston_Positive_Displacement_flowmeter - 6

Flow ranges The measurement errors can be corrected in the different associated electronic converters by means of the adjustment of the pulse / litre factor, obtaining a maximum accuracy. Flow scales pulses / litre A change in viscosity can modify the pulse / litre factor. In general, a change in density affect the COVOL flowmeters, only at the beginning of the scale: - If the density value is lower than 1 kg/l, the initial flow rate must be higher so that the flowmeter is sensitive to the liquid flow. - If the value of density is higher than 1 kg/l, the initial flow rate must be lower so...

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Series_COVOL_Oscillating_piston_Positive_Displacement_flowmeter - 7

Oscillating piston flowmeters Series COVOL ΔP increase (mmH 2O) due to the effect of density and viscosity Graph 2 3 2.7 ν (cSt) = Electronic converters Model CP ... CH420  4-20 mA transmitter  System: - Compact (CP ... CH420L) - Remote in DIN rail (CP ... CH420R) - Remote in panel (CP … CH420P)  Electronics mounted in a housing with aluminium base and polycarbonate (UV resistant) cover (CP … CH420L)  Power supply: - 2-wire, loop powered - Nominal voltage: 8 ... 36 VDC - Power consumption: ≤20 mA  Totalizer: - Nº of digits: 7 - Size of digit: 8 mm - Reset: by means of keyboard ...

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Series_COVOL_Oscillating_piston_Positive_Displacement_flowmeter - 8

Model CIP … CIP II  Volume totalizer: - Model CIP: resettable totalizer - Model CIP II: non-resettable totalizer and resettable partial totalizer  Compact or remote system  Electronics mounted in a housing with aluminium base and polycarbonate (UV resistant) cover  Battery powered (CR-2450): - Nominal voltage: 3 V - Load: 560 mAh - Power consumption: 8 μA  Totalizer: - Nº of digits: 7 - Size of digit: 8 mm - Reset: by means of key or magnet (non-resettable for CIP II)  Partial totalizer (only available for CIP II): - Nº of digits: 5 - Size of digit: 5 mm - Reset: by means of key...

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Series_COVOL_Oscillating_piston_Positive_Displacement_flowmeter - 9

Oscillating piston flowmeters Series COVOL Model MC01  Electronic converter for flow rate indication, volume totalizer,  Electronic converter for volume preselection and totalization partial volume totalizer and preselector with relay output for batching  Fully programmable by the user  Panel mounted  Power supply: 24, 110, 220, 240 VAC 50 / 60 Hz 12, 24 VDC  2-line LCD display with 16 characters (5 mm height)  7 digits totalizer, partial totalizer and volume preselector  Relay output for batching  Flow rate indicator in l/h y m3/h  Dimensions 96 x 96 mm DIN 43700 ...

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Series_COVOL_Oscillating_piston_Positive_Displacement_flowmeter - 10

ATEX version The COVOL flowmeter is suitable for its installation in ATEX hazardous area, that is, in those zones where a potentially explosive atmosphere can be generated. There are two types of protection available: Exi intrinsically safe or Exd ExProof. These devices conform the 94/9/CE directive (Devices and protection systems for use in potentially explosive atmospheres) as indicated in the CE certificate type LOM 14ATEX and its corresponding marking. Exia protection The instrument belongs to group II, therefore it is intended for use in places where there is a risk of generation of an...

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Series_COVOL_Oscillating_piston_Positive_Displacement_flowmeter - 11

Oscillating piston flowmeters Series COVOL Dimensions Exd housing model ADF60V Exd housings are not available for flowmeter sizes DN10 (H) and DN10 DN100 on request

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Series_COVOL_Oscillating_piston_Positive_Displacement_flowmeter - 12

R-CT-COVOL Rev. 1 english version PRESENCE IN MORE THAN 50 COUNTRIES ALL OVER THE WORLD Tecfluid S.A. Narcís Monturiol 33 08960 Sant Just Desvern Barcelona Tel: +34 93 372 45 11 Fax: +34 93 473 44 49 tecfluid@tecfluid.com www.tecfluid.com Quality Management System ISO 9001 certified by Pressure Equipment Directive 97/23/CE certified by ATEX European Directive 94/9/CE certified by HART® is a registered trademark of HART Communication Foundation The technical data described in this specification sheet is subject to modification without notification if the technical innovations in the...

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