Profibus PA Position Transmitter

The TP303 is from the first generation of Profibus-PA devices. It is a transmitter for position measurements. It can measure displacement or movement of rotary or linear type. The digital technology and communication provide an easy interface between the field and control room and several interesting features that considerably reduce the installation, operation and maintenance costs.

The TP303 is versatile and reliable, and has very high accuracy. It may be used for control valve stem position measurement or in any other position sensing application such as louvers, dampers, crushers, etc. Since the TP303 uses a non-contact magnetic coupling for position sensing, it is less sensitive to vibration than other solutions, resulting in longer operational life. The TP303 is part of Smar's complete 303 line of Profibus-PA devices.


Some Characteristics:

PROFIBUS PA,Digital only, complies with IEC 1158-2 (H1): 31.25 kbit/s and voltage mode with bus power
Output Action
Direct or Reverse
< 1%
Range Linear 0 to 100 mm or Rotary 0º to 30º up to 0º to 120º
Using local adjustment magnetic tool or through digital communication using fieldbus.
Actual Position Sensing
Magnet (Non-contact) via Hall effect
Optional LCD indicator
Injected low copper aluminum with polyester painting or 316 stainless steel housing
Process Temperature Limits
Ambient: -40 to 85 ºC (-40 to 185 ºF) 
Process: -40 to100 ºC (-40 to 212 ºF)
Ambient Humidity Limits
0 to100 % RH
Hazardous Area Certification
Explosion proof, weather proof and intrinsically safe
Nominal: 0.80 kg;
Digital display adds: 0.13 kg;
Mountif bracket adds: 0.6 kg.

Smar Device Library CD contains several libraries that will be used in the integration of the Smar equipments in several applications (of different communication protocols as: HART, Profibus and Foundation FieldBus).

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