FF fieldbus pressure transmitter
The intelligent differential pressure/pressure transmitter that complies with FF specifications is based on the 3151 ordinary intelligent differential pressure/pressure transmitter. Through innovative design of sensors and signal processing circuits, it has the function of multi parameter detection. This newly designed product enables a transmitter to simultaneously achieve multi parameter detection of differential pressure (pressure)/static pressure/sensor temperature/medium temperature. Users can choose the required partial detection function or all detection functions according to their needs. The addition of fully digital fieldbus communication technology that complies with the FF protocol greatly improves the product performance of the 3151 intelligent pressure/differential pressure transmitter.
This transmitter has a delicate appearance, light weight, and is easy for users to use and install. It can completely replace the 1151 and 3151 ordinary analog or intelligent differential pressure/pressure transmitters. All varieties have added the precise temperature measurement function of the sensor that contacts the measured medium inside the transmitter, which can provide users with more on-site information. The components of the transmitter in contact with the measured medium can be made of corresponding anti-corrosion (corrosion-resistant) materials according to the actual on-site situation of the user to adapt to different corrosion performance.
Basic parameter 1
Compensation function:
◎ Automatic linear compensation function
◎ Automatic compensation function for environmental temperature
Parameter setting function: zero position, range, write protection, engineering unit, upper and lower limits, etc
Self diagnostic function: sensor, A/D conversion, memory, power self diagnosis
Explosion proof grade: Exd Ⅱ CT6
Maximum liquid contact temperature range of sensor:- 40～104℃
Environmental temperature range: -40~85 ℃, -20~70 ℃ (with LCD display transmitter for use in environmental temperature range)
Relative humidity range: 5% to 98%
Basic parameter 2
Bus power supply: 9-32V DC
Output signal: Digital signal compliant with FF H1 specification (31.25Kbps)
Whole machine power consumption: ≤ 16mA
Device Description: Device description supporting FDT/DTM and EDDL specifications
Certification related: Passed FF Foundation's certification testing (consistency testing and interoperability testing)
performance index
Accuracy level: 0.075% (F.S)
Stability (1 year): ± 0.1% upper range limit/1 year
Differential pressure transmitter static pressure influence: ± 0.1%/7Mpa (zero point), ± 0.2%/7Mpa (range)
Comprehensive influence of environmental temperature (zero and range): ≤ 0.75%/55 ℃ (zero and range)
Anti electromagnetic interference:
GB/T17626.2-1998 Electromagnetic Compatibility Testing and Measurement Techniques - Electrostatic Discharge Immunity Test
GB/T17626.3-1998 Electromagnetic Compatibility Testing and Measurement Techniques - Radio Frequency Electromagnetic Field Radiation Immunity Test
GB/T17626.4-1998 Electromagnetic compatibility testing and measurement techniques - Electrical fast transient burst immunity test
GB/T17626.6-1998 Electromagnetic Compatibility Testing and Measurement Techniques - Conducted Disturbance Immunity Test Induced by Radio Frequency Field
GB/T17626.8-1998 Electromagnetic Compatibility Testing and Measurement Techniques - Power Frequency Magnetic Field Immunity Test