PT100 temperature sensors are widely used in industrial automation and control systems to measure temperature accurately and reliably. The XDB702 PT100 temperature sensor is a high-performance device that is specifically designed to convert PT100 platinum resistance signals into 4-20mA output signals. In this article, we will explore the different wiring methods used for PT100 temperature sensors.
PT100 temperature sensors are typically installed directly in PT100 platinum resistance junction boxes, which consist of different types of platinum resistances that form a thermoresistance integrated temperature sensor. These sensors convert PT100 platinum resistance signals into 4-20mA output signals. However, when PT100 temperature sensors are used for remote transmission of PT100 platinum resistance signals, they may be subject to strong on-site interference or require connection to a DCS system.
The XDB702 PT100 temperature sensor is designed with a unique double-layer circuit board structure, with the lower layer dedicated to signal adjustment and the upper layer used to determine the sensor type and measurement range.
Key Features of the XDB702 PT100 Temperature Sensor
Linear output of 2-wire 4-20mA standard current signal, with a modular structure.
The XDB702 PT100 temperature sensor uses imported components, ensuring reliable performance and minimal temperature drift.
The device features a polarity reversal protection circuit, which protects the circuit when the output is reversed (in which case the current is zero).
The product also has RFI/EMI protection, which helps to improve measurement stability.
The range of the XDB702 PT100 temperature sensor cannot be changed at will, and only the manufacturer can confirm the production specifications.
The electromagnetic compatibility of the PT100 temperature sensor complies with the European Electrical Committee (EC) BSEN50081-1 and BSEN50082-1 standards.
Wiring Methods for PT100 Temperature Sensors
The PT100 temperature sensor is typically connected to a screw terminal on the top of its casing. To meet CE certification requirements, the length of the signal input wiring should not exceed 3 meters, and the output wiring must be shielded cable, with the shield wire connected to ground on one end only.
The center hole of the sensor is used for PT100 platinum resistance signal wiring, and the PT100 platinum resistance signal wire is directly screwed into the input end of the sensor using a screw. The designed screw terminals can be used for internal or external wiring.
One method of connecting the PT100 temperature sensor is as follows:
The PT100 platinum resistance sensor has three wires: A, B, and C (or black, red, and yellow). A and B or C have a resistance value of around 110 ohms at room temperature, while the resistance value between B and C is around 0 ohms, with B and C connected internally. The fixed end of the instrument that is connected to the sensor has three terminals: A is connected to the fixed end of the instrument, while B and C are connected to the other two fixed ends of the instrument. B and C can be interchanged, but they must be connected. If a longer wire is used in between, the specifications and lengths of the three wires must be the same.
The PT100 can be connected using 2-wire, 3-wire, or 4-wire methods, depending on the instruments used. Ordinary display instruments provide a 3-wire connection, with one end of the PT100 sensor connected to a single wire and the other end connected to two wires that are connected to the instrument. The internal wire resistance of the instrument is balanced by a bridge. PLCs usually use 4-wire connections, with two wires connected to each end of the PT100 sensor and two wires connected to the output constant current source of the PLC. The PLC measures the voltage on the other two wires to balance the wire resistance. Four-wire connections are the most accurate, while three-wire connections are acceptable, and two-wire connections are the least accurate. The specific method used depends on the required accuracy and cost.
XDB702 PT100 Temperature Sensor: Understanding the Different Wiring Methods
PT100 temperature sensors are widely used in industrial automation and control systems to measure temperature accurately and reliably. The XDB702 PT100 temperature sensor is a high-performance device that is specifically designed to convert PT100 platinum resistance signals into 4-20mA output signals. In this article, we will explore the different wiring methods used for PT100 temperature sensors.
PT100 temperature sensors are typically installed directly in PT100 platinum resistance junction boxes, which consist of different types of platinum resistances that form a thermoresistance integrated temperature sensor. These sensors convert PT100 platinum resistance signals into 4-20mA output signals. However, when PT100 temperature sensors are used for remote transmission of PT100 platinum resistance signals, they may be subject to strong on-site interference or require connection to a DCS system.
The XDB702 PT100 temperature sensor is designed with a unique double-layer circuit board structure, with the lower layer dedicated to signal adjustment and the upper layer used to determine the sensor type and measurement range.
Key Features of the XDB702 PT100 Temperature Sensor
Linear output of 2-wire 4-20mA standard current signal, with a modular structure.
The XDB702 PT100 temperature sensor uses imported components, ensuring reliable performance and minimal temperature drift.
The device features a polarity reversal protection circuit, which protects the circuit when the output is reversed (in which case the current is zero).
The product also has RFI/EMI protection, which helps to improve measurement stability.
The range of the XDB702 PT100 temperature sensor cannot be changed at will, and only the manufacturer can confirm the production specifications.
The electromagnetic compatibility of the PT100 temperature sensor complies with the European Electrical Committee (EC) BSEN50081-1 and BSEN50082-1 standards.
Wiring Methods for PT100 Temperature Sensors
The PT100 temperature sensor is typically connected to a screw terminal on the top of its casing. To meet CE certification requirements, the length of the signal input wiring should not exceed 3 meters, and the output wiring must be shielded cable, with the shield wire connected to ground on one end only.
The center hole of the sensor is used for PT100 platinum resistance signal wiring, and the PT100 platinum resistance signal wire is directly screwed into the input end of the sensor using a screw. The designed screw terminals can be used for internal or external wiring.
One method of connecting the PT100 temperature sensor is as follows:
The PT100 platinum resistance sensor has three wires: A, B, and C (or black, red, and yellow). A and B or C have a resistance value of around 110 ohms at room temperature, while the resistance value between B and C is around 0 ohms, with B and C connected internally. The fixed end of the instrument that is connected to the sensor has three terminals: A is connected to the fixed end of the instrument, while B and C are connected to the other two fixed ends of the instrument. B and C can be interchanged, but they must be connected. If a longer wire is used in between, the specifications and lengths of the three wires must be the same.
The PT100 can be connected using 2-wire, 3-wire, or 4-wire methods, depending on the instruments used. Ordinary display instruments provide a 3-wire connection, with one end of the PT100 sensor connected to a single wire and the other end connected to two wires that are connected to the instrument. The internal wire resistance of the instrument is balanced by a bridge. PLCs usually use 4-wire connections, with two wires connected to each end of the PT100 sensor and two wires connected to the output constant current source of the PLC. The PLC measures the voltage on the other two wires to balance the wire resistance. Four-wire connections are the most accurate, while three-wire connections are acceptable, and two-wire connections are the least accurate. The specific method used depends on the required accuracy and cost.
Post time: May-09-2023