Xi'an Yunyi Instrument Co., Ltd
Xi'an Yunyiyibiao Instrument Co., Ltd. is a national high-tech enterprise, specializing in the R&D, production and sales of pressure transmitter,level meter, flow , temperature instrument and
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JY25 Piston Dead Weight Tester: Precision Pressure Calibration
The JY25 Piston Dead Weight Tester is a high-precision calibration instrument developed in accordance with the JJG59-2007 national standard. Its core component is manufactured from tungsten carbide, providing exceptional hardness and minimal thermal expansion for outstanding long-term stability.
Featuring isooctyl sebacate as the working fluid, the tester delivers high sensitivity and reliable performance. This advanced design ensures accurate calibration of various pressure instruments, making it suitable for demanding industrial and laboratory applications.
Key Features:
Tungsten carbide piston-cylinder assembly
High stability with minimal deformation
Superior measurement sensitivity
Compliant with JJG59-2007 standard
Ideal for precision pressure calibration
Technical Specifications
| Model Number | Range (MPa) | Accuracy |
|---|---|---|
| JY-0.6 | 0.04 ~ 0.6 | ±0.02% |
| JY-6 | 0.1 ~ 6 | ±0.05% |
| JY-25 | 0.5 ~ 25 | ±0.05% |
| JY-6 | 1 ~ 60 | ±0.05% |
| JY-100 | 1 ~ 100 | ±0.05% |
| JY-160 | 2 ~ 160 | ±0.05% |
| JY-250 | 5 ~ 250 | ±0.05% |
Key Features & Advantages
Robust Tungsten Carbide Core
Manufactured with ultra-hard, low thermal expansion tungsten carbide for exceptional wear resistance and stable performance across varying ambient temperatures (20±5°C).
Precision Weight Loading System
Low-center-of-gravity design with direct weight application ensures smooth piston movement, minimal pressure fluctuation, and highly accurate measurement results.
High-Viscosity Performance
Low-viscosity isooctyl sebacate medium enables superior sensitivity, particularly in high-pressure applications exceeding 25 MPa.
Intelligent Monitoring
Non-magnetic stainless steel weights combined with integrated piston displacement sensors provide real-time position tracking and clear visual feedback.
User-Friendly Operation
Wide measuring range with precisely engineered pressure regulation allows effortless operation across all pressure levels, including maximum capacity of 250 MPa.
Structural description
Typical Applications
This tester is widely used for the calibration and testing of:
Digital Pressure Gauges
Precision Pressure Gauges
Pressure Transmitters
And other pressure instruments.