Chlorophyll analyzer - Beijing Zhongkawei He

Chlorophyll analyzer Beijing Zhongkawei He

Chlorophyll analyzer (plant nutrition analyzer)

Brand: Zhongkawei He

Model:TYS-4N

1、 Purpose:

The chlorophyll analyzer can instantly measure the relative chlorophyll content of plants (in units)SPAD）Or 'greenness level, nitrogen content, leaf surface humidity, leaf surface temperature' can be used to understand the true nitrate demand of plants and help you understand the degree of soil nitrate deficiency or whether excessive nitrogen fertilizer has been applied. You can use this instrument to increase the utilization rate of nitrogen fertilizer and protect the environment (preventing excessive nitrogen fertilizer from contaminating the environment, especially water sources).

2、 Working principle

Working principle of chlorophyll analyzer

1.twoLEDThe light source emits two types of light, one is red light(peak wavelength650nm)One is infrared radiation(940nm)Two types of light penetrate the blade and hit the receiver. The light signal is converted into an analog signal, which is amplified by an amplifier and then converted into an analog signal/The digital converter converts it into a digital signal, which is processed by a microprocessor and calculatedSPADValue and display on the screen.

2.Calibration and Calculation of Chlorophyll Analyzer Measurement Values

During the calibration process, the pressure head does not clamp the sample, twoLEDLight is emitted sequentially, and the received light is converted into an electrical signal. The ratio of light intensity is used for calculation.

After clamping the sample with the pressure head, twoLEDOnce again emitting light, the light transmitted through the blades hits the receiver and is converted into an electrical signal, and the intensity ratio of the transmitted light is calculated.

step1and2The value is used for calculationSPADThe measured value represents the current relative chlorophyll content of the clamped sample leaves.

3、 Technical indicators

1Fast and non-destructive detection of live plants without affecting their growth.

2Multi parameter rapid one-time measurement: simultaneous measurement of chlorophyll, nitrogen, leaf temperature, and leaf surface humidity of plants in one operation, real-time display.

3. Various parameters are displayed and stored simultaneously on the same screen.

4Measurement data can be connected to a computer to export measurement data, facilitating plant nutrient management and analysis.

5The data saved in the host after an unexpected power outage will not be lost.

6Viewing historical data can be done either sequentially or by jumping. For historical data, it can be deleted one by one or all with one click.

7Powered by lithium batteries with backlight function.

8One click switching between Chinese and English.

9Measurement range: Chlorophyll:0.0-99.9SPAD Nitrogen content:0.0-99.9mg/g

Leaf surface humidity:0.0-99.9RH% Leaf surface temperature:-10-99.9℃

10Measurement area:2mm*2mm

11Measurement accuracy: Chlorophyll: ±1 SPADWithin the unit (At room temperature,SPADValue between0-50)

Nitrogen content: ±5%

Leaf surface humidity: ±5%

Leaf surface temperature: ±0.5℃

12Repeatability: Chlorophyll: ±0.3 SPADWithin the unit (SPADValue between0-50)

Nitrogen content: ±0.5unit

Leaf surface humidity: ±0.5unit Leaf surface temperature: ±0.2℃

13Measurement time interval: less than3second

14Data storage capacity: 32KB

15Power supply:4.2VLi-On rechargeable

16Battery capacity:2000mah

17Weight:200g

18Work and storage environment:-10℃~50℃ ≤85%relative humidity

Chlorophyll analyzer Beijing Zhongkawei He