| |
 |
 |
|
|
|
|
 |
 |
With increasing frequency we find
ourselves on the p hone usually with an end user who is
finding that their damper control package
is oscillating. Naturally, the positioner is the first
item to point to as the cause of the oscillation. While
the positioner may be a “part” of the problem,
it is very seldom all of the problem. In many cases we
have learned (through much education from those who provide
damper control) that a big cause of the instability is
the actuator and the fact that the actuator is undersized
to handle the dynamic torques that are
encountered when the dampers are put in service. We sell
to several distributors who specialize in damper control
applications. We very seldom hear from those who size
actuators using 2xs and preferably 3xs the calculated
torque. For those interested, we have a local distributor
who has written a good technical paper on damper control
and actuator sizing-contact us and we will be happy to
share this information. Oscillation is a “package”
issue; a positioner cannot oscillate by itself, but the
damper package can; oscillation is a package
that is unstable. Control “stability” is the
key to good damper control….the correct positioner
and the properly sized actuator will lead to this stability.
We have also included the retrofit
flyer that many of you have already requested. We want
to continue to emphasize this market. As many control
valve companies move away from P/P and E/P positioners,
we feel the V100 or V200 offer a viable alternative, when
the customer does not want to go to a digital unit. Of
course our own D400 and flexible mounting kits offer a
competitive alternative…WHEN, digital
is needed. We feel we (along with our
distributor/oem partners) are well positioned to take
advantage of this very large installed base of product.
With the move into our new
facility we have set our first training date as September
23-24. It will be a 1-1⁄2 day class in our new Chelsea
Service Center. The agenda will be 40% classroom time
and 60% shop/hands on time. We will discuss the very basics
as well as some more technical issues, while covering
all three product groups-V100-200 and D400. VAC will pay
for 2 nights hotel and meals while you attend the session.
To keep the learning effective we want to try to have
groups around six people, so if you are interested get
your reservation in early. We feel there will be enough
mixture of information presented that we can better educate
all levels-inside sales, outside sales, and technicians.
If these are well received, we will put out a full schedule
for 2009 and probably divide the classes into technical/shop
people and a separate school for inside/outside sales
people. |
|
|
|
|
 |
|
|
|
