Section 1: Technical Requirements for Standard Piston Pressure Gauge

The CV series liquid piston pressure gauge can be used as a reference pressure gauge and a standard pressure gauge. The piston pressure gauge is an important metrological instrument for establishing pressure standards in China's various metrological testing institutions and industrial enterprises' pressure metrology departments. It can be used for value transfer and to calibrate digital pressure gauges, precision pressure gauges, pressure transmitters, and more. It complies with the national metrological verification regulations JJG59-2022 "Piston Pressure Gauge" and JJG99-2022 "Weighing Mass."

Section II: Specific Technical Proposal for Piston Pressure Gauge

1. Working Conditions

Ambient Temperature: (20±2)°C

Relative humidity: Constant room with humidity below 80%

Power Voltage: AC 220V, Frequency: 50Hz

2. Technical Specifications

◆ Model: CV-6; CV-60; CV-250; CV-600; CV-1000;

◆ Measurement Range: 0.04~0.6; 0.1~6; 0.5~25; 1~60; 2~100;

Accuracy Grades: 0.005 Grade, 0.01 Grade, 0.02 Grade, 0.05 Grade

◆ Working Medium: Pressure gauges with a measurement range of 25MPa and above use dioctyl adipate (2-ethylhexyl) ester; pressure gauges with a measurement range of 0.6MPa and 6MPa use a mixture of transformer oil and aviation oil.

Piston Materials: Piston Rod: Tungsten Carbide; Piston Cylinder: Tungsten Carbide

◆ Weighing Scale Configuration: Available for configuration in kg sets or MPa sets with pressure deformation coefficient according to customer requirements.

◆ Weight Correction: Apply gravitational acceleration adjustment according to the point of use

◆ Weighing Material: Non-magnetic stainless steel (0.005 grade; 0.01 grade; 0.02 grade); Carbon steel (0.05 grade)

◆ Pressure Testing Method: Gauge Pressure

Pressure Output: M20x1.5 Standard Quick Connector

3. Features

1) Integrated piston system design for easy disassembly and storage. During inspection, simply unscrew the module; no need to remove screws or bolts. It also prevents the risk of piston rod breakage during disassembly and potential rod breakage during normal logistics transportation.

2) The design allows for the simultaneous checking of two tables, with a logical layout that makes loading weights and checking tables more convenient, avoiding any inconvenience caused by obstructions.

3) The table mount features a quick coupling, and the included oil bowl can collect overflowed medium from the mount.

4) The piston system is equipped with a displacement sensor, allowing the floating position of the piston to be displayed in real-time on the screen. Users can monitor the working position of the piston at any time, featuring sensitivity, clarity, and accuracy.

5) Piston rods and cylinders are precision ground, featuring minimal roundness error and clearance, high perpendicularity, extended piston rotation duration, and slow piston descent speed.

6) We use a hoist basket structure for loading weights, which features a low center of gravity and excellent rotational stability.

7) The pressure system utilizes a combination of pre-pressure by a pre-pressure pump and fine adjustment by a pressure regulator, ensuring a high efficiency and a smooth, rapid pressure application process.

8) The appearance is clean and tidy. The countertop is made from a solid block of magnesium alloy, offering a delicate texture, light weight, and high strength.

4. Measurement Function

Used for calibrating and checking piston-type pressure gauges, digital pressure gauges, and other pressure instruments.

5. Supplier-provided technical documents

Main Equipment User Manual

Product Certificate of Conformity

Factory Inspection Report