Abstract: To provide a vascular sap measurement sensor in which a flow channel that receives incoming flow of vascular sap is unlikely to be blocked by tissues of a plant. A vascular sap measurement sensor 1 includes: a trapping probe 20 for trapping vascular sap; and a support 10 that supports the trapping probe 20. A trapping flow channel 21 that receives incoming flow of the vascular sap is formed in the trapping probe 20. The trapping flow channel 21 has an inlet opening 24 formed on a side surface of the trapping probe 20. This makes it unlikely that the trapping flow channel 21 will be blocked by tissues of a plant when sticking the trapping probe 20 into the plant.

Abstract: To provide a vascular sap flow speed sensor having a size allowing measurement of the flow speed of vascular sap in a part of a plant such as a stem and capable of being manufactured at low cost. A vascular sap flow speed sensor 1 includes a heater sensor HS and a reference sensor RS. The heater sensor HS includes: a first probe unit 10a including a heat transfer plate 11 and a probe 12; a heater 20; a first temperature sensor 30a; and a first housing 40a in which the heat transfer plate 11, the heater 20, and the first temperature sensor 30a are housed. The reference sensor RS includes: a second probe unit 10b including a heat transfer plate 11 and a probe 12; a second temperature sensor 30b; and a second housing 40b in which the heat transfer plate 11 and the second temperature sensor 30b are housed. Each of the first probe unit 10a and the second probe unit 10b is made of a metallic material.

Abstract: To provide a vascular sap flow speed sensor having a size allowing measurement of the flow speed of vascular sap in a part of a plant such as a stem and capable of being manufactured at low cost. A vascular sap flow speed sensor 1 includes a heater sensor HS and a reference sensor RS. The heater sensor HS includes: a first probe unit 10a including a heat transfer plate 11 and a probe 12; a heater 20; a first temperature sensor 30a; and a first housing 40a in which the heat transfer plate 11, the heater 20, and the first temperature sensor 30a are housed. The reference sensor RS includes: a second probe unit 10b including a heat transfer plate 11 and a probe 12; a second temperature sensor 30b; and a second housing 40b in which the heat transfer plate 11 and the second temperature sensor 30b are housed. Each of the first probe unit 10a and the second probe unit 10b is made of a metallic material.

Abstract: To provide a vascular sap measurement sensor in which a flow channel that receives incoming flow of vascular sap is unlikely to be blocked by tissues of a plant. A vascular sap measurement sensor 1 includes: a trapping probe 20 for trapping vascular sap; and a support 10 that supports the trapping probe 20. A trapping flow channel 21 that receives incoming flow of the vascular sap is formed in the trapping probe 20. The trapping flow channel 21 has an inlet opening 24 formed on a side surface of the trapping probe 20. This makes it unlikely that the trapping flow channel 21 will be blocked by tissues of a plant when sticking the trapping probe 20 into the plant.