בר עליוןדלג על בר עליון
תוכן מרכזי בעמודדלג על תוכן מרכזי בעמוד
מד זרימה גלגלי שיניים - אובלים - DON
מדי זרימה מסוג גלגלי-שיניים למדיה צמיגה שמן,כימיקלים,גריז,משחות
תחומים: lit/min150-2500 עד l/h0.5-36
לחץ מקסימלי עד 400bar ( בדגם : DON-H)
דיוק: 0.2%± מהמדידה
לחץ מקסימאלי: BAR100
טמפרטורה מקסימאלית: Cº120
אופציה: תצוגה מכנית/דיגיטלית, או נפרדת
מונה Totalizer,קוצב מנה Batcher
Fuel Consumption in Diesel Engines
Oval Wheel Flow Meters Model DON may be used for fuel consumption measurement in diesel engines using the dual flow inputs and the 'A-B' setting. A pair of DON Flowmeters is used with a single electronic model ZOK-Z3 to give a net reading of fuel consumption.
In this off-shore application, a fuel consumption measurement system has been effectively implemented on diesel engines in small ships/ vessels. Here we used a pair of stainless steel flowmeters (DON-S15… for flows up to 550 l/h per flowmeter) and one ZOK-Z3 per engine. As choking of the flowmeter or strainer in main line may result in higher differential pressure and result in diminishing fuel to the engine, an alternative is to use a pressure relief valve in the bypass line. Higher inlet pressure opens the pressure relief valve and ensures a constant supply to the diesel engine. In selective cases, the choice of "pulsating flow” option may be recommendable.
With this installation, the fishermen are now in a position to monitor the actual real time fuel consumption and adapt the ship speed to optimize it. In general, the return of investment is implemented within a month. Needing Minimum Space
If there is need to measure flow rates of viscous media with low space requirement and under harsh conditions, consider the robust oval gear flow meter of DON series from KOBOLD. It is optimally designed for such applications. It is used to monitor or dose lubricants, pastes and oils-, as well as to measure flow rates of various chemicals-, and even fuel consumption measurements. It covers a viscosity range of upto 1000 cP as standard. Through an appropriate conversion and use of special cut rotors, the DON can even be used for media with viscosities of up to 1,000,000 cP.
Through a multitude of designs and combinations the device can be used for a wide range of industrial measurement tasks. There are 13 measuring ranges available, from 0.5–36 l/h through to 150–2500 l/h. Industry standard threads or flanges can be used for installation in pipes. Devices with stainless steel housing can withstand pressures of up to 400 bar. Versions for media temperatures of up to 150°C are also available.
High-quality carbon graphite bearings for stainless steel oval wheels and the contact-free recording of rotations via encapsulated rotor magnets cause virtually no wear. Optional fibre-reinforced PPS rotors do not need any bearing. Stainless steel or aluminium can be selected for the housing. Due to high repetition accuracy of ± 0.03%, the DON flow meter is ideally suited for batching tasks. As no inlet or outlet runs are required, there is an extremely low space requirement.
Various electronic versions with LCD-display provide perfect solutions for a host of different measurement tasks. A loop powered 4...20 mA analogue output without display, mechanical totalisers and reset day counters are available, as are various pulse outputs and output with two hall sensors, which is suited not only for redundant but also for bi-directional flow metering applications. Already deliverable explosion proof (Exd) version and intrinsically safe (Exia) version (ATEX and IECEx) complete the comprehensive offer.
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