B-320-2-E
6
2. OPERATING CONDITIONS
To maintain the stated high accuracy and long service life of the Ultra OVAL, make sure that flowrate, pressure,
temperature and viscosity are within the ratings as stamped on the meter register tag (page 4).
CAUTION
(1) Although allowable ambient temperature is up to +60°C for explosionproof units, it is
desirable that the meter be used at room temperature and humidity.
(2) In cases where the register is exposed to elevated temperatures due to exposure to
direct rays of the sun or to radiant heat, ensure, by providing a sunshade or similar
protection, that the meter is used within the operating temperature range (-10 to +60°C).
(3) Avoid such installation locations as:
1) hardly accessible for maintenance and inspection.
2) temperature variation and/or vibration is excessive.
3) potential danger of immersion in water.
4) corrosive gases exist.
5) not compatible with the explosionproof construction of this meter.
6) large electromagnetic noises are highly expected.
3. GENERAL
3.1 General Description
The Ultra OVAL is a high-precision flowmeter combined with a user friendly batch controller for use in the field.
Its electronic register is programmable with front pushbuttons for batch processes (or quantities of the process
fluid to be delivered). When used in combination with a pneumatic shutoff valve, you can build an automatic
metering system which opens the shutoff valve upon depression of the start button and shuts it off when a
preset quantity of the process fluid is reached.
The register combined with this meter is the LW76E which features a two-step open, two-step close (or one-
step open, two-step close) arrangement. Applications include batch processes in chemical plants, blending,
filling, or clearance processes in the food, pharmaceutical, paint, petroleum, and chemical products industries
to save time and effort, streamline processes, and achieve product uniformity.
In this meter, an amorphous sensor detects the fluid flow by picking up the magnetic fields of permanent
magnets embedded in the oval rotors of proprietary contoured gear profile. As a result, high reliability of
achieved.
