Renke SHT20-59-B High Temperature Sensor Probe, 59mm Length - RS485 Modbus-RTU

The sensor uses an RS485 Modbus-RTU interface. Connect the A and B data lines to an RS485 transceiver or industrial PLC. You will need to send Modbus function codes (typically 0x03 or 0x04) to the sensor's configured address to read the temperature register. Ensure proper termination and bias resistors are used on the bus for reliable communication.

The probe operates from a 10-30V DC power supply. Typically, it requires four wires: Power (V+), Ground (GND), and the RS485 differential pair (A and B). Always refer to the specific wiring diagram for your unit. The wide voltage range makes it compatible with common 12V or 24V industrial DC systems.

The probe measures temperatures from -40°C to +125°C. It maintains a typical accuracy of ±0.3°C at 25°C, leveraging the factory-calibrated Sensirion SHT20 sensor IC. Accuracy may vary slightly at the extremes of the range. The digital output provides up to 14-bit resolution for precise measurement.

The probe features an industrial-grade enclosure and a 59mm stainless steel sheath designed for thermal exposure. While it is optimized for high-temperature air/gas environments, its specific IP rating for liquid immersion is not specified. For direct liquid contact, verify the probe's sealing specifications or consider an additional protective sheath.

Configuration typically requires dedicated configuration software or specific Modbus write commands as per the manufacturer's protocol manual. Common default settings are address 1 and 9600 baud. For network integration, ensure all devices on the RS485 bus have unique addresses and matching communication parameters (baud rate, parity, stop bits).