PROFIBUS PA fieldbus temperature transmitter
The intelligent temperature transmitter adopts the new generation fieldbus intelligent transmitter with PROFIBUS PA fieldbus technology. On the basis of the company's existing intelligent temperature transmitter products, a PROFIBUS PA fieldbus communication card is designed to be added, enabling it to have PROFIBUS PA fieldbus communication capabilities and achieve various information exchanges between instruments and control room equipment. This device integrates rich functional modules. After adopting digital technology, it can use multiple temperature sensors with a wide range, simple interface between the site and the control room, and greatly reduce installation, operation, and maintenance costs. It has two channels, reducing usage costs.
Main purpose and scope of use
Temperature is measured using a thermistor/thermocouple sensor, and a digital signal is output using current modulation, with a data transmission rate of 31.25kb/s. The scope of application ranges from various manufacturing automation, process automation (petrochemical, chemical, power plant, metallurgy, etc.), to automation in light industry, food, building materials, environmental protection and other industries, all of which can be applied.
Basic parameter 1
Sensor type:
Thermocouple: B、E、J、K、N、R、S、T
Thermal resistance: Pt100、Pt1000
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
Protection level: IP65
Working temperature:- 20°C～+70­­­°C
Relative humidity: 5% to 95%
Insulation strength: 500V DC
Basic parameter 2
Bus power supply: 9-32V DC
Output signal: Digital signal compliant with ROFIBUS PA specification (31.25Kbps)
Whole machine power consumption: ≤ 16mA
Device Description: Device description supporting FDT/DTM and EDDL specifications
performance index
Accuracy level: ± 0.2% (F.S)
Environmental temperature impact: ± 0.1%/20 ℃ (zero and range)
Relative vibration: F ≤ 55Hz， Amplitude<0.15mm
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
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