- Dpharp ( differential pressure high accuracy resonant pressure transmitter) is one of most )widely used pressure transmitter used to determine pressure, level & flow.
- They can be connected to HART, FF, ISA100 Wireless standard and Profibus.
- It uses single crystal arrangement which gives uniform atomic arrangement which provides elasticity, stability & no hysteresis.
- An isolated diaphragm is conveyed through oil filled capillaries.
- Sensor posses a pair of H-shaped silicon resonators.
Principle:
- They vibrate at natural frequency in resting state, and when fluid flows a change in frequency is expressed in terms of differential pressure.
Advantages: - High sensitivity & linearilty.
- Minimum ambient temperature & inline pressure effects.
- Multisensing( able to sense dp/static pressure, level, flow, & temperature too{able to monitor flange temperature})
- Real time compensation.
- Fast response time.