Samson 3767, Перевод оригинальной инструкции

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EB 8355-2 EN 5-17
Installation
5.3.4 Reversing amplifier for
double-acting actuators
For the use with double-acting actuators, the
positioner must be fitted with a reversing am -
plifier, e.g. the SAMSON Type 3710 Revers -
ing Amplifier (see Mounting and Operating
Instructions
u
EB 8392 ).
The signal pressure of the positioner is sup-
plied at the output A1 of the reversing ampli-
fier. An opposing pressure, which equals the
required supply pressure Z when added to
the pressure at A1, is applied at output A2.
The rule A1 + A2 = Z applies.
If a different reversing amplifier (item no.
1079-1118 or 1079-1119) is used, follow
the mounting instructions described below:
Signal pressure connections
A1 : Connect output A1 to the signal pressure
connection on the actuator that causes the
valve to open when the pressure rises.
A2 : Connect output A2 to the signal pressure
connection on the actuator that causes the
valve to close when the pressure rises.
Pressure gauge attachment
The mounting sequence shown in Fig. 5-10
remains unchanged. Screw a pressure
gauge bracket onto the connections A1 and
Z.
Pressure gauge bracket:
− G ¼: 1400-7106
− ¼ NPT: 1400-7107
Pressure gauges for supply air Z and output
A1 according to section 5.8.
1.3 1.2 1.1 1
Output 38
Supply
9
A1
1.5 1.6
Z
A2
1.4
A1 A2
Output 38 Supply 9
1.3 1.2 1.1
1.6
Z
A1
From the positioner
Control signals to the actuator
1 Reversing amplifier
1.1 Special screws
1.2 Gasket
1.3 Special nuts
1.4 Rubber seal
1.5 Stopper
1.6 Filter
Fig. 5-10: Mounting a reversing amplifier