# 2.3.1 Temperature sensor This product is equipped with two PT1000 temperature sensor connection interfaces to provide accurate upstream and downstream pipeline temperature measurements. The measurement function can be used as an extended application of the BTU thermal energy meter. The relevant precautions are as follows: ● Please use a two-wire PT1000 sensor; the product is not compatible with PT500 and PT100 sensors. ● The measuring range of the instrument is -100 \~ 300 °C. The quality and accuracy of the sensor used will directly affect temperature measurement results. Please select the correct, appropriate temperature sensing element. ● The sensor has no polarity, but there is a distinction between upstream and downstream. Care should be taken to note this during installation. ● Wire length should be less than 3 meters. If wires are too long, it will affect measuring accuracy. ● Keep the wires away from any instruments or devices that may generate electromagnetic noise, such as large cables, motors, power strips, inverters, etc. Wire and product connectors must be securely mounted. Weak or loose contacts may result in resistance and affect the measurement results. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.lorric.com/qr/fu-tx310-ultrasonic-flowmeter-manual-en-v2/2-installation-method/2.3-temperature-sensor-analog-output/2.3.1-temperature-sensor.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.