Eckardt Positioner - SRD998

This Smart positioner is well accepted in the market due to the “Ease of calibration”, “Stock availability” and “Valve adaptability.” This Smart positioner has an i-drive type rotary selector for easy setup and calibration.

Electric Foxboro Eckardt valve positioners monitor the positions of valve actuators and bring them to the desired position according to the incoming control signal. Eckardt valve positioners are used in linear and rotary valves. Positioners are used when the 0.2 to 1 bar pressure in the diaphragm chamber does not override the friction and high differential pressures inside the actuators. Eckardt positioner is mounted on the actuator and attached to the actuator’s shaft with a feedback lever to monitor the valve position. When a control signal wants to change the position of the valve actuator, the Eckardt valve positioner sends the power required to move the actuator until the positioner reaches the correct position, with the help of a high-pressure air supply. There are four types of Schneider Electric Foxboro Eckardt positioners: pneumatic, electronic, electro-pneumatic, and digital. IS (intrinsically safe) Eckardt valve positioners do not create any spark or heat effect that may cause gas mixtures to explode. Eckardt devices for high temperature and corrosive applications are selected as stainless steel. They may have different specifications according to the application, feature, and certificates. Eckardt positioners are used in many industries such as automotive, food, chemistry, medical, oil & gas, refinery, and energy.

SRD 998 Positioner

The intelligent positioner SRD998 is designed to operate pneumatic valve actuators and can be operated from the control systems, controllers, or PC-based configuration and operation tools. The positioner is available with HART 7 communication protocol. The extra large multi-lingual full-text graphical-LCD, in conjunction with the rotary selector, allows a comfortable and easy local configuration and operation.

SRD998 Intelligent Positioner with HART Communication

• Angle range up to 95 ° (up to 120 ° on request)
• Mounting onto any linear or rotary actuator
• Supply air pressure up to 10 bar (145 psig)

MAIN FEATURES of SRD998 Positioner

Intelligent
Auto-start with self-calibration
Self-diagnostics, status- and diagnostic messages
DTM for valve diagnostics and predictive maintenance
Easy local operation with the rotary selector
Extra large multi-lingual full-text graphical LCD
With HART 7 communication
Stroke 8 to 260 mm (0.3 to 10.2 in) with a standard lever; larger stroke with a special lever

ZECO Valve