CVS 1051 Series, Инструкция по эксплуатации

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Figure 4: CVS Type 1051 Actuator-Valve Mounting
Loading Connection
1. Connect the loading pressure piping to the
pressure connection in the top of the diaphragm
casing. Run either 1/4-inch pipe or 3/8-inch
tubing between the 1/4-inch pressure connection
and the instrument.
2. Keep the length of pipe or tubing as short as
possible to avoid transmission lag in the control
signal. Should a volume booster or valve
positioner be used, ensure that it is properly
connected to the factory. If a valve positioner is
part of the assembly, the connection will likely be
made at the CVS Controls factory.
3. When the control valve has been completely
installed and connected, check for correct action
(air-to-open or air-to-close) according to the
controlling instrument. Ensure proper operation
by checking that the actuator stem and valve
shaft are moving freely in response to the
loading pressure change on the diaphragm.
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