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Electro-Pneumatic Positioners

Electro-Pneumatic Positioners

SAMSON digital positioners are single-acting or double-acting positioners for attachment to pneumatic linear or rotary actuators. Due to their digital signal processing technology, these positioners have the following advantages over conventional positioners

Description


Electro pneumatic positioner

Pneumatic valve positioner-The Samson Types 3730-3, 3730-6 and 3731-3 Positioners also allow HART communication between the field and process control level. The Type 3730-4 Positioner allows the integration of the final control element into a PROFIBUS PA network, while Types 3730-5 and 3731-5 Positioners can communicate over a FOUNDATION  fieldbus network.

Depending on the input signal, a distinction is made between pneumatic (p/p) and electropneumatic (i/p) positioners:

Electropneumatic (i/p) positioners:
Electropneumatic positioners use an analog DC signal of 0/4 to 20 mA or 1 to 5 mA as the input variable and issue an output signal pressure (pst) up to maximum 6 bar (90 psi).

Digital positioners
SAMSON digital positioners are single-acting or double-acting positioners for attachment to pneumatic linear or rotary actuators. Due to their digital signal processing technology, these positioners have the following advantages over conventional positioners:
1) Simple operation
2) LCD with rotatable reading direction
3) Automatic zero and span calibration during initialization (except for Type 3730-0)
4) Automatic detection of faults in the actuator
5) Direction of action independent of mounting position
6) Continuous monitoring of zero point
7) Low air consumption
8) Permanent storage of all parameters in EEPROM (protected against power failure)

Digital positioners can be fitted with additional functions:
1) Inductive limit switches
2) Solenoid valve
3) Position transmitter
4) External position sensor
5) Analog input
6) Binary input and output
7) Forced venting
8) Leakage sensor


If you have more interest, please send  your valuable inquiry to this email: postmaster@wtindustrialeqpt.com


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