In order to connect existing valve actuators to a FIELDBUS system, SMAR developed a FIELDBUS to pneumatic signal converter, with very low air consumption and a very stable output signal.
Detalles de Productos
Pregunta sobre este artículo
CONVERTIDOR DE FOUNDATION A SEÑAL NEUMATICA
Convertidor de Foundation a señal neumática.
FP302 Foundation Fieldbus to Pneumatic Signal Converter.
In order to connect existing valve actuators to a FIELDBUS system, SMAR developed a FIELDBUS to pneumatic signal converter, with very low air consumption and a very stable output signal. A 0 to 100% digital signal from the FIELDBUS is converted into a 3 to 15 psi or 3 to 30 psi pneumatic signal according to a characteristic curve selected by the user. Besides the normal PID control function, linearization, master capability, alarms and damping, the FP302 offers signal limitation and reversing and many other features for valve actuation:
Output signal: 3 to 15 psi (default) or 3 to 30 psi (extended)
Supply pressure: 20 to 100 psi;
Can be mounted in any position;
Accuracy: 0.4 % of the span.
Communication Digital only, Foundation Fieldbus, 31.25 kbit/s voltage mode with bus power Output 3-15 psi (0,2-1,0 kg/cm²) or 3 to 30 psi (0,2-2,1 kg/cm 2)
Output Capacity 3.40 Nm3/h (2 scfm) @ 1.4 bar (20psi) air supply;
6.80 Nm3/h (4 scfm) @ 2.8 bar (40psi) air supply;
15.30 Nm3/h (9scfm) @ 7 bar (100 psi) air supply.
Accuracy 0.4% of span Power Supply Bus powered: 9-32 Vdc Power Consumption Quiescent 12 mA
Up to 20 Dynamically Instantiable Function Blocks. Click here for the list of available Function Blocks
The Function Blocks available allow simple and complex control strategies to be placed inside the field device, making the field device an integral part of the control system. In order to fully benefit from the Function Blocks in the device a True Foundation Fieldbus system is recommended.
Using local adjustment magnetic tool if device is fitted with LCD display.
Complete configuration possible using PC software interface.
Supply Pressure 20 - 100 psi (1,4 - 7 kg/cm²) Indication Optional LCD indicator Material Injected low copper aluminum with polyester painting or 316 stainless steel housing Process Temperature Limits -40 to 85ºC (-40 to 185 ºF) Ambient Humidity Limits 0 to100 % RH Hazardous Area Certification Explosion proof, weather proof and intrinsically safe Mounting Wall, panel, or 2" pipe with optional bracket
Nominal: 1.80 kg;
Digital display adds: 0.13 kg;
Mounting bracket adds: 0.60 kg.