Smart valve positioner, straight stroke, single acting, fail lock, split body anti-high temperature vibration

Output subsystem and its pneumatic components: one of the seven major parts of the conventional mode of the hardware structure of the intelligent valve positioner. The output subsystem includes an output interface module and pneumatic components. According to the selection of the pneumatic actuator, confirm whether the pneumatic output of the intelligent valve positioner is single-acting (one output) or double-acting (two positive and negative outputs). Pneumatic components are generally a combination of a pilot part and a power amplifier part. The pilot part, that is, an electrical converter, mainly has two designs: one is based on the pulse digital technology and uses piezoelectric inverse effect materials with asymmetric structure crystals. The piezoelectric valve technology accepts digital Signal (electrical pulse) two-position action pneumatic output; one is based on the electromagnetic principle of traditional analog technology and the I/P converter technology of the pneumatic nozzle/baffle mechanism, accepting the analog electric signal for continuous action pneumatic output. Power amplifier output stages such as pneumatic amplifiers or pneumatic spool valves are used after these two pilot parts. For springless cylinder type actuators that require two outputs, generally, a pneumatic reverse power amplifier or a pneumatic reverse amplifier is added to the physical structure. When the actuator is in a balanced position, the theoretical forward output air pressure and reverse output air pressure are the same. Equal and opposite directions, the size of the driving force is related to the air source pressure, the effective area of the cylinder (piston) and the balance pressure. Most intelligent valve positioner products have reverse pneumatic output as an option, or add a set of piezoelectric valve components or built-in/external pneumatic reverse amplifier.

Performance indicators

Product application field

TORLEO brand TOP-5879F1 series smart valve positioner are used in conjunction with pneumatic control valves, and are widely used in metallurgy, power generation, paper-making, environmental protection and other industries where process control is required.

Typical valve application

Diaphragm control valve, single-acting ball valve, single-acting butterfly valve

Technical features of the product

• Nozzle baffle + symmetrical membrane valve structure, strong ability to resist dust, moisture and oil;

• Built-in keyboard and large LCD screen, the positioner can be debugged without a handheld operator;

• HART communication, modular design, convenient for users to choose and use;

• Valve position output, modular design, convenient for users to choose and use;

• Configure linear, quick opening, equal percentage and user-defined flow characteristics;

• One-key auto-tuning operation to meet the needs of users for quick installation and fool-like debugging;

• PID compound control algorithm can achieve 0.1-0.3% control accuracy.

Selection guide for TOP-5879F1 series smart valve positioner