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Flowserve Digital Positioner Apex 9000

Flowserve Digital Positioner Apex 9000 is a compact digital positioner.
Flowserve Digital Positioner Apex 9000 is specially designed for VDI / VDE 3845 rotary actuators.
Flowserve Digital Positioner Apex 9000 provides excellent control at an affordable price.
The Flowserve Digital Positioner Apex 9000 has a friction clutch.
Flowserve Digital Positioner Apex 9000 makes installation and operation easy through compact design and fast calibration and commissioning.

Product Features

Flowserve Digital Positioner Apex 9000 is a compact digital positioner.
Flowserve Digital Positioner Apex 9000 is specially designed for VDI / VDE 3845 rotary actuators.
Flowserve Digital Positioner Apex 9000 provides excellent control at an affordable price.
The Flowserve Digital Positioner Apex 9000 has a friction clutch.
Flowserve Digital Positioner Apex 9000 makes installation and operation easy through compact design and fast calibration and commissioning.

Flowserve Digital Positioner Apex 9000

• Installation and operation ease from friction clutch, compact design plus quick calibration and commissioning
• Greater process control with add-in switches and 4-20 mA position feedback options
• Increased plant and personnel safety with intrinsically safe, non-incendive, or explosion-proof FM, CSA, IECEx and ATEX options

The APEX A9000 positioner is a digital positioner with various options. The positioner consists of three main modules:
The microprocessor-based electronic control module includes direct local user interface switches The piezo valve-based electro- pneumatic converter module
The infinite resolution valve position sensor
The complete control circuit is powered by the two-wire, 4-20 mA command signal. The analog 4-20 mA command is passed to the microprocessor, where it is compared to the measured valve stem position. The control algorithm in the processor performs control calculations and produces an output command to the piezo valve, which drives the pneumatic amplifier. The position of the pilot valve in the pneumatic amplifier is measured and relayed to the inner loop control circuit. This two-stage control provides for more responsive and tighter control than is possible with a single stage control algorithm. The pneumaticamplifier controls the airflow to the actuator. The change of pressure and volume of the air in the actuator causes the valve to stroke. As the valve approaches the desired position, the difference between the commanded position and the measured position becomes smaller and the output to the piezo is decreased. This, in turn, causes the pilot valve to close and the resulting flow to decrease, which slows the actuator movement as it approaches, the new commanded position. When the valve actuator is at the desired position. the pneumatic amplifier output is held at zero, which holds the valve in a constant position.

Product Parameters

Application and After-Sales Service

The main application areas of valve positioners include:
1. Coal gasification project
2. Clean energy gasification unit
3. Electricity
4. Hydrocarbons
5. Water supply and water treatment
6. Pulp and paper
7. Industrial environment
8. Food and beverage
9. Life sciences and other fields

After-sales service

Online support and Video technical support.

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