Danfoss Flow Meter User Manual
- Danfoss Flow Meter User Manual Pdf
- Danfoss Flow Meter User Manual Software
- Danfoss Flow Meter User Manual User
- Danfoss Electromagnetic Flow Meter
- Danfoss
Here you will find our documentation such as data sheets and operating manuals for our measuring instruments. If you do not find the document, approval or certificate you are looking for, please contact us, we look forward to hearing from you (info@metra-emt.de)!
Manufacturer of Valves for Fresh Water and Sewage. Flomatic ® Corporation is a diversified valve manufacturer of water valves & waste water valves. Click on a product area to the left to view specifications and online Request for Quote (RFQ). You are now leaving your store. If you continue, you will be logged-out of your Danfoss Store and directed to the Store you have selected. You are being logged-out as you do not have credentials to purchase in the selected country. The conditions require meters with a robust construction and fulfilling high demand requirements on e.g. Temperature and pressure. These meters cover sizes from DN15 up to DN100 with flow rates from 0.6 up to 60 m3/h and are available in pressure range PN16 and PN25. The manual is divided into a table of contents, eight chapters, seven ap- pendices and an index. Introduction Contains a presentation of the MJK MagFlux®electromagnetic flow meter, the structure of this manual and the operating principles. Find danfoss manuals at valinonline.com. All documents are viewed and printed as a Portable Document Format (PDF) file.
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Brochures
Product data sheets
| Measurement system “oriflow” with compact orifice |
| Measurement system “autarkon” with compact orifice – EWZ 120.1 & EWZ 127.1 |
| Measurement system “autarkon” with standardized differential pressure devices – EWZ 140.1/147.1 |
| Measurement system “autarkon” with venturi tube 150.1/157.1 Steam / Gas |
| Measurement system “autarkon” with venturi tube – 150.1/157.1 Liquids |
| Measurement system “autarkon” with cross probe – EWZ 211.7 |
| Measurement System “autarkon” with cross probe – EWZ 311.7 |
| Ultra sonic meter for heat / cooling applications – EWZ 817 |
| Ultra sonic meter for heat / cooling applications – EWZ 817G |
| Ultra sonic meter for heat / cooling applications – EWZ 817T |
| Ultra sonic meter for heat / cooling applications – EWZ 837 |
| Magnetic inductive meters for cooling applications – EWZ 617 |
| Magnetic inductive meters for cooling applications – EWZ 617 calibrated |
| Vortex Meter – VTX3 |
| Flow and Energy Calculator – ERW 700 |
| Temperature sensor |
Operating Manuals
| Measurement system “oriflow” with compact orifice |
| Measurement system “autarkon” with compact orifice – EWZ 120.1 & EWZ 127.1 |
| Measurement system “autarkon” with standardized differential pressure divices – EWZ 140.1/147.1 |
| Flow and energy calculator ERW 700 |
| Flow and energy calculator ERW 700, “M-Bus Extension” |
| Flow and energy calculator ERW 700, “Profibus Extension” |
| Flow and energy calculator ERW 700, “RS 485 Extension” |
| Flow and energy calculator ERW 700A |
| Flow and energy calculator ERW 700(A) “Modbus Extension” |
| Measurement system “autarkon” with cross probe – EWZ 211.7 |
| Measurement system “autarkon” with cross probe – EWZ 311.7 |
| Ultra sonic meter for heat / cooling applications EWZ 817 / EWZ 837 |
| Magnetic inductive meters for cooling applications – EWZ 617 |
| Vortex Meter – VTX3 |
| Vortex Mester VTX3 additional Manual Ex-protection |
| Temperature sensor |
APPLICATION EXAMPLE
| Steam Measurement by mean of a ISA 1932 Nozzle |
| Standard volume flow measurement Venturi tube |
MID
| Messsystem “autarkon” mit Kreuzsonde |
| Durchfluss- und Energierechner – Wärme |
| Durchfluss- und Energierechner – Kälte |
Pressure Equipment Directive
| EC Type Examination Certificate Module H Vortex Meter VTX3 |
EC Type Examination Ex- Approvals
| EU Type Examination Certificate Vortex Meter VTX3 KIWA 18 ATEX 0041 X |
Declaration of conformity / Declaration of manufacturer
QM
Danfoss Flow Meter User Manual Pdf
Basic Elements
Just like other flowmeters, differential pressure flowmeters consist of two elements. They are:
A primary element: This element causes a change in kinetic energy which results in the differential pressure in the pipe. The unit must be suitably matched to the
- pipe size,
- flow conditions, and
- the liquid’s properties
Besides, the measurement accuracy of the element must be fine over a practical range.
A secondary element: The secondary element measures the differential pressure created by primary element and gives the signal or read-out which is in turn transformed to the actual flow value.
Types of Differential Pressure Flowmeters
Most widely used differential pressure flowmeters are:
- Orifice Plates
- Flow Nozzles
- Venturi Tubes
- Variable Area flowmeters, i.e. Rotameters
Accuracy & Rangeability
Performance of a head-type flowmeter installation is a function of the
Danfoss Flow Meter User Manual Software
- precision of the flow element and
- the accuracy of the d/p cell
Danfoss Flow Meter User Manual User
On average, flow element precision is expressed in percentage of actual reading terms, whereas d/p cell accuracy is stated as a percentage of calibrated span. A d/p cell typically provides accuracy of ±0.2% of the calibrated span. With no detrimental effect on accuracy, rangeability of a flowmeter can be extra enhanced by employing several d/p flowmeters in parallel runs.
Errors and Noise
In case of compressible fluids, the ratio of differential pressure divided by upstream pressure should not exceed 0.25 for reduction of error and correction of density. Metering errors caused due to wrong installation of the primary element can become considerable i.e. up to 10%. Following are the possible causes of these errors:
- the condition of the mating pipe sections
- insufficient straight pipe runs
- pressure tap and lead line design errors
In turbulent flow conditions, not more than 10% of the d/p signal could possibly be noise produced by disturbances from valves and fittings. These disturbances can be both up- and downstream of the element, and by the element itself. To sort out this noise, a damping is provided in d/p cells which prove to be adequate for majority of the applications. Rigorous noise can be diminished by applying two or more pressure taps connected in parallel on both sides of the d/p cell.
Sources
OmegaTech
Danfoss Electromagnetic Flow Meter
Engineering Toolbox
Danfoss
Omega.literature