L-737-3-E
6
1.2 Transportation Considerations
(1) The OVAL flowmeter can best be transported to the installation site in the shipping container used for
transit from the factory.
(2) Avoid impact shocks during transit.
1.3 Storage Considerations
If the meter is to be stored for extended periods of time upon receipt before installation, unexpected problems
could arise. If such is the case, the following considerations should be taken:
(1) The flowmeter can best be stored in the original package used for transit from the factory.
(2) The place of storage should meet the following requirements:
Free from rain and water
Free from vibration and impact shock
Storage/shipping conditions
Temperature：20±15℃ Relative humidity：65±20％ Barometric pressure：500 to 1060hPa
1.4 Operating Conditions
In order to maintain the designed metering accuracy and long service life, it is essential that the ratings, such
as the flow rate, pressure, and temperature be kept within the specified limits. These operating conditions are
stated in Sections "3. SPECIFICATIONS AND PERFORMANCE" and "13. PRODUCT CODE EXPLANATION" of
this manual. Make sure to fully understand them before placing the meter in service.
◦ If the process fluid is corrosive, the meter materials must be reviewed for compatibility.
◦ Cleanse the interior of flow tube thoroughly after use for measuring fluids that tend to deposit
solids. If solid deposits adhere to flow tube, it can affect the meter accuracy.
◦ If you need to change operating conditions, consult OVAL.
◦ Some gasmixtures that are not homogeneous cannot be measured. Consult OVAL for applicability.
1.5 Precautions at Installation
CAUTION:
To ensure accurate and stable measurement, the Coriolis flowmeter should be
installed in a location where piping vibration will not exceed 0.3G.
1.6 Precautions for power-on
Be sure to close the display lid and the terminal lid of the transmitter before turning on the power. The
explosionproof enclosure must be ensured (with the requirements stated in section 10.5 satisfied) before use.
To ensure the stable measuring condition, allow 20 minutes of warm-up period. "WARM UP 20" will be
displayed for 20 minutes after powering-on. The number indicates remaining warm-up period (min.).
1.7 Returning Equipment
If the meter must be returned to OVAL for any reason, follow these steps to ensure the most efficient
processing.
(1) Clean the unit and flush out the flow tube and pack the sensor unit carefully. Fully document the fluid.
Inadequate information will delay handling of the meter. (⇨ Fill in the forms prepared on pages 96 and 97.)
(2) Enclose complete information about the contents being returned including model and serial numbers,
the reason for return, return address, and full documentation of the type of fluid in writing.
(3) Pack the equipment carefully, using the original packing if possible.
(4) Return the complete flowmeter, including, for instance, the transmitter with all associated components.
Remove the conduit connections and all other parts not originally shipped with the meter (for
example, wiring connections).
Be sure to completely remove any foreign matter inside the sensor unit . Because the sensor
unit cannot be disassembled, OVAL will not be able to clean residue inside the tube and service
your meter.
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