Plant Water Potential Meter

Introduction

The plant water potential meter is an analytical instrument used to measure the water status of plants and its components and to provide component analysis for the sap of the ducts after the woody parts are removed. This instrument can be used to study the water relationship of plants and the relationship between plants and the environment. ZWS-1 is suitable for the study of plant physiology, ecology, agronomy, forestry and forage. It guides the rational use of water and drought-resistant breeding of crops and forests and grasses, and is an important instrument for agricultural and forestry teaching and scientific research.

The instrument is easy to operate and has fast detection. It is also suitable for indoor, outdoor and field measurements.

Measurement principle:

In the continuous system of soil-plant-atmosphere, the roots and stems of plants continuously absorb water from the soil, while the leaves continuously evaporate and lose water to the surrounding environment. In this water potential gradient system, there must be a water potential gradient relationship between the roots, stems and leaves of plants, so that the small water column in the wood conduit is affected by the negative pressure of the low water potential of the air, forming a pulling force for the upward transportation of water. When the branches or leaves of the plant are cut off, the stretched water column in the conduit breaks, and the water column will shrink from the incision to the inside of the upper end. Put the cut material into the pressure chamber of the instrument (see the next chapter for the operating procedure), so that one end of the incision extends out of the room and seals it, and then pressurize it to rebalance the tension in the branches or leaves, and push the small water column back to the surface of the incision. At this time, the water drop detection probe automatically detects the seepage of water droplets and automatically locks the measurement data. The pressure value displayed by the instrument is the current water potential value of the plant.

Features:

1. Large-screen LCD display, full Chinese menu operation.

2. Measurement mode: automatic measurement, manual measurement, one-button switching

3. Two measurement units, MPa and Bar, are available.

4. The pressure value displayed on the LCD screen is the current water potential value of the plant.

5. Powerful storage function, which can store 4000 records.

6. One-click deletion of all measurement data.

7. The computer can be uploaded via USB cable, and the host computer software automatically analyzes the measurement data.

8. The measurement data can be viewed in the form of a report, and the time period can be selected for query and viewing.

9. The stored and recorded data can be backed up and saved in EXCEL format for future use.

Technical parameters:

Detection range: 0-3.5Mpa

Display mode: LCD display

Reading accuracy: 0.01Mpa

Instrument appearance and size: Box 1: 560mm×400mm×280mm

Box 2: 630mm×400mm×310mm

Power supply: 12v/2.5Ah lithium battery, with clock function.

Net weight of the instrument: Weight of each box: about 15Kg

12v/2.5Ah lithium battery, with clock function.

Storage capacity 4000 records.

Can upload to computer via USB cable, the host computer software automatically analyzes the measurement data

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