CXT Series
CXT series smart transmitter is the field pressure instrument adopting the
microprocessor as its core, which extends the communication and other
functions on the basis of the traditional capacitance sensor technology.
With the
help of hand held communicator or other host computer adopting HART protocol,
the bi-directional communication (data reading, writing and diagnosing) could be
realized in the control room, transmitter field or any places connecting with
control circuit.
With CXT series smart transmitters, measurement of pressure, flow and liquid
level etc. is available to meet a wide range of applications and requirements
including petroleum, chemical industry, steel, electric power, environmental
protection and so on.
Features
- High accuracy: up to 0.04%
- Span turn-down capacity: 40:1
- HART communication
- Self-diagnosis and remote diagnosis
- Minimum environmental influence
- Dry calibration without reference pressure
- Vibration proof
- Excellent corrosion resistance
- Modular compact structure
- IP67 degree of enclosure protection
- Explosion proof and intrinsic safety approval
- Application flexibility
These features make CXT series smart transmitters an ideal choice for harsh industrial environments and diverse applications.
Working Principles
A/D convertor transforms the current of the modulator to the digital signal, which
will be used by the microprocessor to judge the input pressure value. The microprocessor is responsible for controlling the function of the transmitter and also performs the following operations:
- Sensor linearization
- Reset the measurement interval
- Conversion of engineering units
- Creating a time delay (Damping)
- Calculation of the square root for volume flows
- Fine adjustment of the sensor (Sensor Trim)
- Fault detection and digital communication
This process allows the transmitter to process and provide accurate pressure data for various industrial applications.
The block diagram of the function of this transmitter shows all the components involved in processing and communication and explains how they interact.
