DMKY-25 Vibrating Wire Pore Water Pressure Meter

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DMKY-25 Vibrating Wire Pore Water Pressure Meter

Product ID：CLQTlxlcly069

Price: Please inquire PDF Format

Supply Ability:50 SETS/MON

Port:SHENZHEN

Product Introduction
Other information

Model NumberDMKY-25

Brand NameNANJINGDANMO

Payment TermsT/T, paypal，Alibaba.com Pay

DMKY-25 Vibrating Wire Pore Water Pressure Meter

Product Introduction
The DMKY-25 Vibrating Wire Pore Water Pressure Meter is designed for long-term installation in hydraulic structures, concrete structures, foundations and other geotechnical applications. It measures internal seepage pressure or pore water pressure and can simultaneously monitor the temperature at the installation point.
With suitable accessories, the pore water pressure meter can also be installed in pressure measuring pipes and foundation boreholes. Its compact stainless steel construction, high waterproof performance and digital frequency output make it suitable for long-term structural and foundation monitoring.

Performance Features
• Compact structure: Maximum diameter of only 24 mm, suitable for confined installation spaces.
• High sensitivity: Full-scale output can reach up to 4000 counts.
• Stable long-term operation: High-quality design and manufacturing support reliable long-term buried monitoring.
•Stainless steel housing: Robust construction with high waterproof performance.
• Reliable vibrating wire technology: Frequency-based digital output is less affected by cable length.
• Temperature measurement: Simultaneously measures the temperature at the installation point for accurate temperature correction of pressure readings.
• Flexible installation: Suitable for hydraulic structures, concrete structures, foundations, pressure measuring pipes and boreholes with appropriate accessories.

Working Principle
The DMKY-25 uses the vibrating wire pressure measurement principle. When external pore water pressure acts on the pressure-sensitive diaphragm, the diaphragm produces a corresponding deformation and changes the tension of the vibrating wire.
The excitation and signal pickup system excites the vibrating wire and detects its vibration frequency. The frequency signal has a defined relationship with the applied pressure, allowing the monitoring system to calculate the corresponding pore water pressure.
The sensor consists mainly of a pressure-sensitive diaphragm, vibrating wire, excitation and signal pickup assembly, sealed housing and shielded cable. A built-in temperature measurement function allows temperature-related effects to be corrected for more accurate monitoring.

Technical Specifications

Parameter	Specification
Model	DMKY-25
Sensor Type	Vibrating Wire Pore Water Pressure Meter
Maximum Diameter D	24 mm
Length L	120 mm
Pressure Measurement Range	0–2500 kPa
Resolution r	≤0.8 kPa/F
Temperature Measurement Range	0 to +40°C
Temperature Measurement Accuracy	±0.5°C
Temperature Correction Coefficient b	Approx. 0.15 kPa/°C
Output	Digital frequency signal
Housing Material	Stainless steel

Application Scenarios
The DMKY-25 vibrating wire pore water pressure meter is suitable for:
• Hydraulic and water conservancy structures
• Concrete dams and other concrete structures
• Foundation pore water pressure monitoring
• Seepage pressure monitoring
• Geotechnical and foundation engineering
• Pressure measuring pipes
• Foundation boreholes
• Long-term structural health and safety monitoring

DMKY-25 vs. Conventional Pore Water Pressure Monitoring

Feature	DMKY-25 Vibrating Wire Meter	Conventional Pressure Sensor
Measurement Principle	Vibrating wire frequency	Electrical pressure signal
Output	Digital frequency signal	Analog/electrical signal
Cable-Length Influence	Measurement is designed to be less affected by cable length	May be more sensitive to signal transmission conditions
Long-Term Burial	Designed for long-term embedded installation	Depends on sensor type and construction
Waterproof Housing	Stainless steel, high waterproof performance	Depends on model
Temperature Measurement	Integrated temperature measurement	May require separate sensor
Installation	Compact 24 mm diameter	Varies by sensor

FAQ
1. What does the DMKY-25 measure?
It measures seepage or pore water pressure inside hydraulic structures, concrete structures and foundations.
2. What is the pressure measurement range?
The pressure measurement range is 0–2500 kPa.
3. What measurement principle does the sensor use?
It uses a vibrating wire frequency measurement principle, converting pressure-induced diaphragm deformation into a corresponding frequency signal.
4. Can the DMKY-25 measure temperature?
Yes. It can simultaneously measure the temperature at the installation point over a range of 0 to +40°C.
5. What is the temperature measurement accuracy?
The temperature measurement accuracy is ±0.5°C.
6. Where can the pore water pressure meter be installed?
It can be embedded in hydraulic structures, concrete structures and foundations. With suitable accessories, it can also be used in pressure measuring pipes and foundation boreholes.
7. Is the sensor suitable for long-term monitoring?
Yes. The DMKY-25 is designed for long-term buried monitoring and features a stainless steel housing and high waterproof performance.
8. Does cable length significantly affect the measurement?
The vibrating wire digital frequency output is designed to reduce the influence of cable length on measurement values, making it suitable for remote monitoring installations.

FAQ
1. What does the DMKY-25 measure?
It measures seepage or pore water pressure inside hydraulic structures, concrete structures and foundations.
2. What is the pressure measurement range?
The pressure measurement range is 0–2500 kPa.
3. What measurement principle does the sensor use?
It uses a vibrating wire frequency measurement principle, converting pressure-induced diaphragm deformation into a corresponding frequency signal.
4. Can the DMKY-25 measure temperature?
Yes. It can simultaneously measure the temperature at the installation point over a range of 0 to +40°C.
5. What is the temperature measurement accuracy?
The temperature measurement accuracy is ±0.5°C.
6. Where can the pore water pressure meter be installed?
It can be embedded in hydraulic structures, concrete structures and foundations. With suitable accessories, it can also be used in pressure measuring pipes and foundation boreholes.
7. Is the sensor suitable for long-term monitoring?
Yes. The DMKY-25 is designed for long-term buried monitoring and features a stainless steel housing and high waterproof performance.
8. Does cable length significantly affect the measurement?
The vibrating wire digital frequency output is designed to reduce the influence of cable length on measurement values, making it suitable for remote monitoring installations.