FST800-3051DR Single-Crystal Silicon Differential Pressure Transmitter

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FST800-3051DR Single-Crystal Silicon Differential Pressure Transmitter

Product ID：CLQTcgq009

Price: Please inquire PDF Format

Supply Ability:200SETS/MON

Port:SHENZHEN

Product Introduction
Other information

Model NumberFST800-3051DR

Brand NameHNFEIERSITE

Payment TermsTT，PAYPAL，Alibaba.com Pay

FST800-3051DR Single-Crystal Silicon Differential Pressure Transmitter
Product Introduction
The FST800-3051DR Single-Crystal Silicon Differential Pressure Transmitter is a high-performance micro differential pressure transmitter featuring an imported German single-crystal silicon sensing chip and suspended sensor structure. It provides excellent stability, high overpressure resistance, and accurate differential pressure measurement.
The transmitter converts measured differential pressure into a standard 4-20mA output signal and supports HART communication for remote configuration and diagnostics. Users can perform local adjustment through the three-button interface or configure the transmitter remotely using a handheld communicator, wireless APP communicator, or configuration software.
With high-accuracy low-range measurement and intelligent compensation, the FST800-3051DR is suitable for oil and gas, chemical processing, power generation, pulp and paper, municipal gas, steel, machinery, shipbuilding, and other industrial applications.

Performance Features
•   High accuracy: Standard calibrated range accuracy up to 0.1%.
•  Excellent low-pressure measurement: Suitable for differential pressure ranges as low as -50 to +50 Pa through range compression.
•  Strong overpressure resistance: Up to 1 MPa one-sided overpressure for the S1 range and 2 MPa for S2.
•  Intelligent compensation: Temperature and static pressure compensation reduce measurement errors under changing field conditions.
•  Flexible range compression: S1 and S2 both provide a 3:1 range ratio.
•  Multiple display units: mA, Pa, kPa, MPa, bar, mbar, %, psi, and mmH₂O.
•  Easy local operation: Five-digit backlit LCD with three-button adjustment.
•  Intelligent communication: Supports HART field communication protocol.
•  Self-diagnostics: Comprehensive diagnostic functions improve operational reliability.
• Wireless commissioning: Supports wireless APP communication for convenient remote adjustment.
•  Flexible output: Linear or square-root output can be configured through software.

Working Principle
The FST800-3051DR uses a single-crystal silicon differential pressure sensing element to detect the pressure difference between its high-pressure and low-pressure sides.
The differential pressure causes a controlled deformation of the sensing element, which is converted into an electrical signal by the integrated sensor circuit. Advanced temperature and static pressure compensation correct environmental influences, improving measurement stability and accuracy.
The processed measurement signal is converted into a 4-20mA analog output, with HART digital communication superimposed on the current signal for remote parameter configuration, diagnostics, calibration, and monitoring.
For flow measurement applications, the transmitter can also provide a square-root output through configuration software.

Technical Specifications

Parameter	Specification
Model	FST800-3051DR
Sensor Type	Single-crystal silicon differential pressure sensor
Measuring Media	Liquid, gas, steam
S1 Range	-1 to +1 kPa; -10 to +10 mbar; -100 to +100 mmH₂O
S2 Range	-6 to +6 kPa; -60 to +60 mbar; -600 to +600 mmH₂O
Standard Accuracy	Up to 0.1%
S1 One-Sided Overpressure	1 MPa
S2 One-Sided Overpressure	2 MPa
Static Pressure	Up to 16 MPa
Output	4-20mA; 4-20mA + HART
Load Resistance	0-600Ω at 24V DC
Power Supply	10.5-45V DC; intrinsically safe: 10.5-26V DC
HART Communication Cable Length	Up to 2 km
Recommended HART Load	250-600Ω
Saturation Current	Upper 20.8mA; lower 3.8mA
Alarm Current	Upper 22.8mA; lower 3.6mA, configurable
Zero/Span Adjustment	Local three-button or remote software adjustment
Zero Shift	-20% to +20% of maximum range
Output Mode	Linear / square-root
Display	5-digit backlit LCD
Operating Temperature	-40 to +85°C; fluorinated oil: -10 to +60°C
Storage Temperature	-40 to +100°C
Weather Resistance	DIN40040 GPC
EMC Standard	EN1326-1:2006

Application Scenarios
Industrial Process Measurement
Suitable for differential pressure monitoring in chemical, petroleum, power, steel, machinery, and shipbuilding processes.
Flow Measurement
The transmitter supports square-root output and can be used with differential pressure flow elements for industrial flow measurement.
Gas and Steam Systems
Suitable for monitoring differential pressure in gas pipelines, steam systems, and municipal gas applications.
Pulp and Paper Industry
The robust sensor design and optional corrosion-resistant wetted materials support demanding pulp and paper processes.
Low Differential Pressure Applications
Its high range compression capability makes the FST800-3051DR suitable for low differential pressure measurement where conventional transmitters may lack sufficient sensitivity.

FST800-3051DR vs Conventional Differential Pressure Transmitters

Feature	FST800-3051DR	Conventional DP Transmitter
Sensor Technology	Single-crystal silicon	Conventional pressure sensing technology
Low DP Measurement	Excellent	Depends strongly on range
Standard Accuracy	Up to 0.1%	Typically varies by model
Overpressure Resistance	Up to 1/2 MPa one-sided	Model-dependent
Compensation	Temperature + static pressure	Basic or model-dependent
Output	4-20mA + HART	Usually 4-20mA
Local Display	5-digit backlit LCD	Optional/model-dependent
Configuration	Local, HART, software, wireless APP	Usually local/HART
Output Function	Linear / square-root	Usually linear

Frequently Asked Questions
Q1: What is the FST800-3051DR used for?
It is designed for accurate differential pressure measurement of liquids, gases, and steam in industrial process applications.
Q2: What is the lowest differential pressure range?
The S1 range is -1 to +1 kPa, and the transmitter can be compressed for stable use down to approximately -50 to +50 Pa according to the supplied specifications.
Q3: Does the transmitter support HART communication?
Yes. The FST800-3051DR supports 4-20mA + HART communication for remote configuration and diagnostics.
Q4: How can the transmitter be calibrated or adjusted?
Zero and span can be adjusted using the three local buttons, configuration software, or a wireless APP communicator.
Q5: What is the maximum overpressure resistance?
The S1 range provides up to 1 MPa one-sided overpressure resistance, while S2 provides up to 2 MPa.
Q6: Can it be used for flow measurement?
Yes. The transmitter supports square-root output, making it suitable for differential-pressure-based flow measurement when used with an appropriate primary flow element.
Q7: What power supply does the FST800-3051DR require?
The general-purpose version operates on 10.5-45V DC. The intrinsically safe version uses 10.5-26V DC.
Q8: What are the operating temperature limits?
The standard operating temperature is -40 to +85°C. With fluorinated oil filling, the specified range is -10 to +60°C.

Frequently Asked Questions
Q1: What is the FST800-3051DR used for?
It is designed for accurate differential pressure measurement of liquids, gases, and steam in industrial process applications.
Q2: What is the lowest differential pressure range?
The S1 range is -1 to +1 kPa, and the transmitter can be compressed for stable use down to approximately -50 to +50 Pa according to the supplied specifications.
Q3: Does the transmitter support HART communication?
Yes. The FST800-3051DR supports 4-20mA + HART communication for remote configuration and diagnostics.
Q4: How can the transmitter be calibrated or adjusted?
Zero and span can be adjusted using the three local buttons, configuration software, or a wireless APP communicator.
Q5: What is the maximum overpressure resistance?
The S1 range provides up to 1 MPa one-sided overpressure resistance, while S2 provides up to 2 MPa.
Q6: Can it be used for flow measurement?
Yes. The transmitter supports square-root output, making it suitable for differential-pressure-based flow measurement when used with an appropriate primary flow element.
Q7: What power supply does the FST800-3051DR require?
The general-purpose version operates on 10.5-45V DC. The intrinsically safe version uses 10.5-26V DC.
Q8: What are the operating temperature limits?
The standard operating temperature is -40 to +85°C. With fluorinated oil filling, the specified range is -10 to +60°C.