FB3351H monocrystalline silicon series high-precision intelligent pressure/differential pressure transmitter

The measurement of flow rate, liquid level, and pressure adopts HART fieldbus technology, which can provide more on-site information to improve the performance of the factory.

Sensor membrane head

During operation, the isolation diaphragms and filling fluid on the high and low pressure sides transmit the process pressure to the sensor diaphragm head,Converted into corresponding currents, voltages, or numbersHART ® (High speed addressable remote transmitter data highway)Output signal.

FB3351HThe series of sensors also perform temperature measurement to compensate for temperature effects.

During the characterization process in the factory, all sensors undergo pressure and temperature cycling tests throughout their entire operating range. Based on the data obtained from this, correction coefficients are generated and stored in the memory of the smart board to ensure accurate signal correction during the operation of the transmitter.

Electronic circuit board

The electronic board adopts high-performance integrated circuits and surface packaging technology. This board corrects the input signal of the sensor and linearizes it. The output part of the electronic board module converts digital signals into analog outputs and communicates with the handheld device.

The LCD meter head can display the percentage of pressure value, current value or range.

data storage

The configuration data is permanently stored in the transmitter electronic board moduleEPROMIn memory. After the transmitter loses power, the data is permanently saved, so the transmitter can work immediately after power on.

number/Analog Conversion and Signal Transmission

Process variables are stored as digital data, which can be accurately corrected and converted into engineering units. The corrected data of the signal is converted into an analog output signal.HARTThe handheld device can directly access sensor readings in the form of data signals without going through data processing/Convert to obtain higher accuracy.

COMMUNICATION FORMAT

FB3351HSeries transmitters adoptHARTProtocol for communication, which uses industry standardsBe11202Frequency shift modulation(FSK)Technology. Overlaying high-frequency signals on analog outputs enables remote communication. By using this technology, simultaneous communication and output can be achieved without affecting the integrity of the circuit.FB3351HSeries transmitters can be used withHARTThe host of the protocol communicates.

FUNCTION

HARTThe protocol makes it easy for users to useFB3351HThe menu configuration, testing, and specific setting functions of the series.

configuration

useHARTHandheld devices can be easily operatedFB3351HSeries menu for current adjustment, parameter configurationHARTInformation, two-point fine-tuning, graphic monitoring. Set the parameter configuration of the transmitter, including:

·Zero point and full point settings

·Selection of engineering units

·Linear or square root output

·Damping time

·Display mode

·Display accuracy

HARTInformation can input informative data into the transmitter for identification and physical description, including:

·Date

·Workstation identification:8Within characters

·Workstation description:16Within characters

·Information:32Within characters

test

When there is a problem with the system,If the operator confirms that there is a problem with the circuit,Can allow the transmitter to provide a specific output,For circuit testing purposes.

Specific settings

Specific settings need to be made during the transmitter initialization phase and digital electronic board maintenance. It allows for fine-tuning of sensors and analog outputs,To comply with factory pressure standards.

select term

LCD meter head

·Digital header,2that 's ok,5LCD display

·Directly display numerical data with higher accuracy

·Display pressure, current, or range percentage according to user requirements

·approve360°Rotating for easy installation

Transient voltage protection

·Integrated transient voltage protection terminal

·Electromagnetic compatibility complies with national standards:

《IEC6100-4-2》Electrostatic discharge immunity test IIIlevelBclass

《IEC6100-4-4》Electrical fast transient pulse group anti-interference test IIIlevelBclass

《IEC6100-4-5》Surge (impact) immunity test IIIlevelBclass