The temperature sensor 3455 is one of many weather sensors produced by Andra. It is designed for high-precision measurement of air temperature. It is widely used and can be used both indoors and outdoors.The temperature sensor is equipped with an Andra standard interface, which can be directly inserted into the sensor bracket of the automatic weather station 2700, or fixed to 25mm aluminum pipe fittings.

The temperature sensor is cylindrical, 80mm long, and has a 6-pin watertight socket at the bottom.The sensor element is embedded in a small tube with a cooling plate, and the coil, resistor, etc. are fixed to the center of the sensor. This structure makes the temperature sensor sensor have better thermal insulation between the sensor element, connecting wire and socket.

The probe has a radiation shielding function, and when the wind speed is less than 0.5m/s, it can prevent the probe from heating due to sunlight.

The sensor is based on the ohmic half-bridge principle, it adopts2000As a sensing element, the membrane platinum resistor of Ω has three ranges:-43~+48°C;-30~+60°Cand-60~+30°C.

Single probe cable up to a maximum length500 no, when the cable length exceeds150 NoWhen the cable resistance needs to be corrected.Try to avoid cable length extending into the air exceeding the length of10 No, it is recommended that the cable be as close as possible to the ground to avoid being affected by atmospheric current.

Circuit diagram
		The probe can be connected to the Aanderaa digital system via a connection cable 2842 (a 10-meter connection cable with waterproof connector).Other lengths and separate connectors and cables are customizable.If the cable length exceeds 150 meters, the resistance of the cable needs to be corrected, and the correction factor is (N – 512) x 0.00011 per 10 meters of cable length.