Manual Change for IM 01G05B03-01E 1st Edition : No.15-010-E July 30 2015-00
Addition to the section “4.4.1 Interruption of Power Supply” (page 27) :
Attention!
The current outputs may temporarily turn unstable during the power-on sequence after
power failure. Take care of your process not to be affected by this behavior.
Addition to the chapter “5. Basic Measurement” (page 29) :
Note!
When changing any settings in "PARAMETER" program branch, be sure to also go
through "MEASURING" program branch to the end where the measurement will start. In
this case, you do not always have to fix the transducers on to the pipe, and thus you do
not always need to get the actual flow measurement.
If you shut off the power supply without taking this procedure, the settings to be changed
would not be effective and keep the same settings as before.
Addition to the section “5.4 Selection of the Sound Path Factor” (page 34) :
When the pipe outer diameter is more than 600mm, the sound path factor as “1” (one) is recommended.
Otherwise, the measurement may become unstable when flow velocity or fluid temperature changed.
Addition to the section “5.5.2 Mounting of the Transducers” (page 35) :
The pipe wall thickness may slightly vary from part to part. Check it in advance by applying a wall thickness probe
or some other ways and avoid mounting the transducers on such parts.
Attention!
Instructions for using “Acoustic couplant weatherproof type” (Shin-Etsu Silicone, 1
COMPONENT RTV) are as below.
The operating condition of ambient temperature
Before and during curing : 0 to +50°C / 32 to 122°F
After curing : -40 to +180°C / -40 to 356°F
When applying this couplant, cut the tip of attached nozzle to appropriate length and
set it to the tube container. Also, remove matters like dust or oil on the surface to be
applied. Otherwise, its adhesion force may become lower.
When curing this couplant, keep the ambient and installation position temperature
between 0 to +50°C (32 to 122°F). If not, the flow measurement may fail because of
air bubbles formed inside the rubber before curing, etc.
It usually takes one to three days for complete curing depending on the conditions.
Addition to the section “5.5.2.2 Mounting with Fixtures and Chains” (page 36) :
Attention!
When using mounting fixtures, there may arise some air gap between the transducer
surface and pipe wall because of any distortion of the pipe wall. Make sure to avoid
having such air gap between them.
Addition to the section “6.1 Selection of the Physical Quantity and of the Unit of Measurement” (page 39) :
Attention!
In case of mass flow, select “Other Medium” as a measured fluid. When “Other Medium”
has been selected, US300FM requests to enter the density which is used to calculate
mass flow.
