General Instruction Manual
Safety
General safety instructions
8 / 90
IM 01U10B00-00EN-R, 3rd edition, 2018-07-09
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Avoid erosion and corrosion as they reduce accuracy and resistance to temperature
and pressure. Over time, calibration constants change as a result of erosion and cor-
rosion, therefore requiring recalibration. Rota Yokogawa does not assume any guar-
anty or liability with respect to corrosion resistance of wetted parts in any specific
process. The user is responsible for selecting the appropriate materials. Rota Yoko-
gawa provides support in clearing up the question of corrosion resistance of the mate-
rials used (special fluids but also cleaning agents). Minor changes in temperature,
concentration or pollution degree in the process may result in differences in terms of
corrosion resistance. In case of corrosion or erosion, the pipes must be checked peri-
odically to ensure necessary wall thickness. This can be accomplished by using, for
example, the tube health check function (see applicable General Specifications
GS01U01B
␣␣
-00
␣␣
-R, chapter "Options").
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When performing welding tasks on the pipe, it is important not to ground the welding
equipment by way of the flow meter. Soldering and welding work on parts of the flow
meter is prohibited.
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Continuous temperature fluctuations in excess of 100 °C may result in tube failure
due to material fatigue and therefore must be avoided.
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The operator is responsible for ensuring that design limits (pressure, temperature) are
not exceeded in the event unstable fluids decay.
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External influences may result in failure of threaded connections. The operator is re-
sponsible for providing suitable protective measures.
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Compression and shock waves in pipes can cause damage to the sensor. For this
reason it is important to avoid exceeding the design limits (pressure, temperature).
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Fires may result in increased process pressure (caused by temperature-related vol-
ume changes) and failure of gaskets. The operator is responsible for taking suitable
measures to prevent fire-related damage.
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Manufacturing methods and technologies have been successfully field-tested for
decades. Erosion and/or corrosion are not taken into account.
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Removal of material from the flow meter with power tools such as drills or saws is not
permitted.
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Any repair, modification, replacement or installation of replacement parts is permitted
only so long as it is in keeping with this user's manual. Other work must be first autho-
rized by Rota Yokogawa. Rota Yokogawa does not assume liability for damage
caused by unauthorized work on the flow meter or by improper use.
