HED-ZWS-1 Automatic Plant Water Potential Meter

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HED-ZWS-1 Automatic Plant Water Potential Meter

Product ID：HZNStrcd012

Price: Please inquire PDF Format

Supply Ability:50SETS/MON

Port:SHENZHEN

Product Introduction
Other information

Model NumberHAD-ZWS-1

Brand NameHUOERDE

Payment TermsTT，PAYPAL，Alibaba.com Pay

HED-ZWS-1 Automatic Plant Water Potential Meter

Product Introduction
The HED-ZWS-1 Automatic Plant Water Potential Meter is an analytical instrument designed to measure plant water potential and water status. It can also be used to obtain xylem sap from pressurized plant tissues for subsequent component analysis.
By measuring plant water potential, researchers can investigate plant water relations, plant–environment interactions, water transport, drought response, and crop water status. The instrument is widely applicable to research and teaching in plant physiology, ecology, agronomy, forestry, grassland science, and related fields.
With automatic measurement, rapid detection, data storage, USB data transfer, and PC-based analysis, the HED-ZWS-1 supports both indoor laboratory testing and outdoor/field measurements.

Performance Features
•    Large LCD display with a full Chinese menu for straightforward operation.
•    Automatic and manual measurement modes selectable with one key.
•    Dual measurement units: MPa and Bar.
• Direct water potential reading: The pressure value displayed on the LCD represents the current plant water potential.
•    Large data storage capacity: Stores up to 4,000 measurement records.
•    One-key data deletion for convenient data management.
•    USB data transfer to a computer.
•   PC software analysis: Upper-computer software can automatically analyze uploaded measurement data.
•    Report-based data viewing: Stored records can be reviewed as reports.
•   Time-period query: Measurement records can be searched by selected time periods.
•   Excel backup: Stored measurement records can be exported and backed up in Excel format.
• Portable field design: Suitable for laboratory, outdoor, and field measurements.
• Rechargeable lithium battery: Supports portable operation and includes a clock function.

Working Principle
Plants continuously absorb water from the soil through their roots while losing water to the atmosphere through transpiration from their leaves. This creates a water potential gradient within the soil–plant–atmosphere continuum, with corresponding gradients from roots to stems and leaves.
Water in the plant xylem is therefore maintained under tension as it is transported upward. When a plant leaf or branch is cut, the tensioned water column in the xylem is disturbed and the water column retracts from the cut surface.
For measurement, the cut plant material is placed inside the instrument's pressure chamber, while the cut end is exposed outside the chamber and sealed around the chamber opening. Pressure is then gradually applied to the sample.
As pressure increases, the tension in the plant tissue is progressively balanced. When the xylem water reaches the cut surface, a small amount of water emerges from the cut end. The instrument's water-droplet detection probe automatically detects the emerging droplet and locks the measurement data.
The pressure value at this equilibrium point is used as the plant water potential value and is displayed directly by the instrument.

Technical Specifications

Parameter	Specification
Model	HED-ZWS-1
Instrument Type	Automatic Plant Water Potential Meter
Measurement Range	0–3.5 MPa
Display	LCD
Reading Resolution	0.01 MPa
Measurement Modes	Automatic / Manual
Measurement Units	MPa / Bar
Data Storage	4,000 records
Data Transfer	USB
PC Analysis	Supported
Data Report	Supported
Time-Period Query	Supported
Data Backup	Excel format
Power Supply	12V / 2.5Ah rechargeable lithium battery
Clock Function	Yes
Case 1 Dimensions	560 × 400 × 280mm
Case 2 Dimensions	630 × 400 × 310mm
Weight	Approx. 15kg per case

Application Scenarios
The HED-ZWS-1 is suitable for plant water potential research and teaching in:

Plant physiology
Plant ecology
Agricultural science
Forestry research
Grassland and forage science
Crop water-status monitoring
Plant water-relations studies
Drought stress research
Drought-resistant crop breeding research
Plant–environment interaction studies
Irrigation and water-use research
Laboratory and field plant measurements

Measurement results can support research into reasonable water management for crops, trees, and forage plants, as well as drought-response and drought-resistance studies.

Comparison: HED-ZWS-1 vs. Conventional Manual Plant Water Potential Measurement

Feature	HED-ZWS-1 Automatic Plant Water Potential Meter	Conventional Manual Measurement
Measurement Mode	Automatic / Manual	Primarily manual
Measurement Range	0–3.5 MPa	Depends on instrument
Reading Resolution	0.01 MPa	Depends on instrument
Water-Droplet Detection	Automatic detection probe	Operator observation
Data Storage	4,000 records	Often requires manual recording
Data Transfer	USB	May require manual transcription
PC Analysis	Supported	May require manual processing
Data Backup	Excel format	Usually manual
Report Viewing	Supported	Limited/manual
Unit Selection	MPa / Bar	Depends on instrument
Field Measurement	Supported	Depends on equipment
Data Management	Digital storage and query	Primarily manual

FAQ
1. What does the HED-ZWS-1 measure?
The HED-ZWS-1 measures plant water potential, which is an important indicator of plant water status and plant water relations.
2. What is the measurement range?
The measurement range is 0–3.5 MPa, with a reading resolution of 0.01 MPa.
3. How does the instrument determine plant water potential?
A plant sample is placed in a pressure chamber and pressure is applied until water is pushed back to the cut surface. The instrument automatically detects the emerging water droplet and records the corresponding pressure value as the plant water potential.
4. Does the instrument support automatic measurement?
Yes. The HED-ZWS-1 provides automatic and manual measurement modes, which can be switched with one key.
5. What measurement units are available?
The instrument supports MPa and Bar.
6. How many measurement records can be stored?
The built-in storage can hold up to 4,000 measurement records.
7. Can measurement data be transferred to a computer?
Yes. Measurement data can be transferred through USB, and the accompanying PC software can automatically analyze the data.
8. Can the data be exported for long-term storage?
Yes. Stored records can be backed up in Excel format, making them convenient for later use and analysis.
9. Can the HED-ZWS-1 be used outdoors?
Yes. The instrument is designed for laboratory, outdoor, and field measurements, making it suitable for plant water potential research in different environments.
10. What is the power supply?
The instrument uses a 12V / 2.5Ah rechargeable lithium battery and includes a clock function.

FAQ
1. What does the HED-ZWS-1 measure?
The HED-ZWS-1 measures plant water potential, which is an important indicator of plant water status and plant water relations.
2. What is the measurement range?
The measurement range is 0–3.5 MPa, with a reading resolution of 0.01 MPa.
3. How does the instrument determine plant water potential?
A plant sample is placed in a pressure chamber and pressure is applied until water is pushed back to the cut surface. The instrument automatically detects the emerging water droplet and records the corresponding pressure value as the plant water potential.
4. Does the instrument support automatic measurement?
Yes. The HED-ZWS-1 provides automatic and manual measurement modes, which can be switched with one key.
5. What measurement units are available?
The instrument supports MPa and Bar.
6. How many measurement records can be stored?
The built-in storage can hold up to 4,000 measurement records.
7. Can measurement data be transferred to a computer?
Yes. Measurement data can be transferred through USB, and the accompanying PC software can automatically analyze the data.
8. Can the data be exported for long-term storage?
Yes. Stored records can be backed up in Excel format, making them convenient for later use and analysis.
9. Can the HED-ZWS-1 be used outdoors?
Yes. The instrument is designed for laboratory, outdoor, and field measurements, making it suitable for plant water potential research in different environments.
10. What is the power supply?
The instrument uses a 12V / 2.5Ah rechargeable lithium battery and includes a clock function.