The use of the maximum and minimum thermometer in agriculture

Maximum and minimum thermometer is also called the thermometer, it is used to record in a day or a period of time the maximum temperature and minimum temperature in the air, on this basis to scientific guidance you maintenance fruits and vegetables, nursery stock flowers and various kinds of plants. In addition can also be used for the family, the school meteorological experiment teaching and so on. Temperature measurement range: - 40 - + 50 ℃ accuracy: & plusmn; 1 ℃ product size: 230 * 85 * 20 mm product material: PVC plastic, mercury thermometer, high and low temperature records indicate product principle in blue tube temperature indication in a blue wool stoma around each one, when the temperature changes, directional signs from the watermark column drove up and thus indicates the maximum or minimum temperature. The right of the indicating needle the indicated temperature is the highest temperature, on the left side of the indicating needle indicated for minimum temperature. To the left of the numerical symbols: negative is, above the red numerical temperature is below zero. Numerical notation: on the right is negative, the following red numerical temperature is below zero. Instructions 1. This form should be suspended in the air to circulate. 2. To observe the temperature time, visual need to decide. At the time of observation records indicated by the blue indicating needle bottom temperature. After observation, please press the middle button to make entry to attract indicating needle contact with mercury on both ends, start a new round of temperature record. 3. If at ordinary times not to touch it, it is the ordinary thermometer, temperature of the left and right side is the same. If you want to measure nine to nine o 'clock tomorrow today during the maximum and minimum temperature. That is about to click the middle button, let the two sides of the two null fitting eries with mercury touch. Then at nine o 'clock tomorrow do you think it is the highest temperature during the period of a few degrees, the minimum temperature is a few degrees. On the right is the highest temperature, the left is the lowest temperature, the lower end of the observation is to look at the blue column. Second, if to measure the middle button again, you can in a certain time period can be observed. Now to the maximum and minimum thermometer isn't have further understanding?