I. Usage



Used for piston-type pressure gauges, calibration of digital pressure gauges, and other pressure instruments. Meets the requirements of JJG59-2022 "Piston-Type Pressure Gauge" Verification Regulation and JJG99-2022 "Weighing Mass" National Verification Regulation. Satisfies the calibration needs of the company's existing digital pressure modules, high-precision pressure sensors, and high-range pressure sensors.

Section 2: Specific Technical Solution for Piston Pressure Gauge

2.1 Working Conditions

Ambient Temperature: (20±1)℃

(2) Environmental Humidity: Relative humidity not exceeding 80%

(2) Input Voltage: AC 220V, Frequency: 50Hz

2.2 Technical Specifications

Technical Specifications

Pressure Measurement Range: (0-1000) MPa, any range.

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

(3) Working Medium: Dodecanedioic acid di-isodecyl ester, with a kinematic viscosity of 20~25 mm²/s at 20°C.²/s, acid value not exceeding 0.05 mgKOH/g.

(4) Piston Material: Tungsten Carbide; Weighing Material: Non-Magnetic Stainless Steel

(5) Pressure output interfaces are M20x1.5 standard quick connectors or custom-made according to customer requirements.

III. Technical Features

(1) Operation Mode: Fully automatic control, manual operation switchable

(2) Full Automatic Mode: One-button full automatic operation controlled by PC (auto-pressure, load weights), user-friendly human-machine interaction, fast response rate, ensuring accuracy of measurement and testing.

(3) Manual Mode: Manual pressure and gauge adjustment, user-friendly design reduces operation intensity.

(4) The servo system controls the pressure source to automatically increase pressure. Measurement and control are achieved through a high-precision, fully automatic piston-type pressure gauge transducer. The provided automatic constant system pressure is suitable for the automatic calibration and verification of various pressure gauges.

(5) The automatic pressure system control method allows for continuous changes in system pressure during ascent or descent, accurately reflecting the stroke and return error of the inspected gauge.

(6) The piston breakage prevention rod structure significantly resolves the issue of piston rod breakage due to user errors during operation (e.g., collisions with weights), providing users with greater peace of mind.

(7) The oil cup features a rapid oil drainage function, allowing for regular replacement of contaminated pressurized oil.

(8) The detection connection port is equipped with a drainage function, allowing for regular removal of debris introduced by the pressure gauge during testing.

(9) Mirror finish weights are wear-resistant, dust and soot pollution-resistant, and easy to clean, ensuring long-term precision and consistent weight.

(10) Set up a weight rotation monitoring system to report the weight operation status in real-time.

(11) Pressure calculation software with features such as deformation coefficient correction, configured with parameters like gravitational acceleration based on user requirements.

(12) Full automatic loading of integer pressure points within the pressure range, as well as manual intervention loading for any decimal pressure points under nominal accuracy conditions.

(13) Automatic full-loading function for integral pressure point weight.

(14) Pressure gauges with a pressure of ≤60MPa utilize a full binary weight mass configuration. The weight masses are distributed in a binary pattern, with parallel addition and subtraction of weights, requiring only 6 weights to achieve any integer pressure point up to 60MPa. For pressure gauges with pressures greater than 60MPa, a combination of binary weight mass and equal mass weight configurations is used. This combination of configurations achieves the least number of weights to obtain the maximum possible mass under high mass conditions, for instance, a 250MPa pressure gauge requires a total of 9 sets of weights, which is significantly fewer than the 33 sets required for series weights.

(15) Fewer weight pieces achieve rapid weight addition response, achieving an average weight addition speed of approximately 2-10 seconds for any weight. Reducing the number of weight pieces also facilitates inspection of the weight and piston system. Fewer weight pieces also effectively reduce wear on the weights, improving the precision retention of the weights, and ensuring more stable, reliable, and accurate testing data.

(16) Decimal Pressure Point Weights Quality Manual Intervention Configuration Function

(17) Set the manual intervention quality loading mode. According to user requirements, manual intervention can be applied to the coding process to obtain any decimal pressure point within the pressure range, under the nominal accuracy conditions.

(18) This configuration mode of weights provides the possibility for users to generate any arbitrary pressure standard value.

(Part 19) Modular Piston System Design: Easy to install, disassemble, store, and inspect. Piston components and specialized weights come with dedicated inspection flight cases, convenient for storage, transportation, and inspection.

V. Software

1. Optional camera for automatic recognition of digital gauge readings, achieving fully automatic calibration.

2. Calibration of digital pressure gauges, precision pressure gauges, and pressure transmitters available.

3. Supports editing, storing parameters such as effective piston area, weight of the mass, deformation coefficient correction, gravitational acceleration, and medium density; facilitates communication with the piston component section, collects the piston system's operational status (speed, suspension state) and environmental data (laboratory temperature, humidity), and provides real-time feedback on the piston's working dynamics and stability through software.

4. Supports common database data storage.

5. Data can be collected, stored, and analyzed through the operation terminal.

6. The software features automatic fault identification for instruments, overload protection alarms, and provides prompts, warnings, and emergency stop commands based on abnormal conditions encountered during use.

7. Communication Interfaces: RS232, RS485, USB

Section 6: Test Software

1. Equipment User Manual

2. Equipment Software

3. Product Compliance Certificate

4. Factory Inspection Report

5. Optional accessories expansion

6. State-level or above legal metrology institutions' "Calibration Certificate."

CWS2000 PR Series Fully Automatic Piston Pressure Calibration Software

I. Overview:

The CWS2000 Pressure Calibration System Software is the matching software for our PR series fully automatic piston type pressure gauges. It can perform data collection, data recording, binary weight value calculation and correction. This software greatly promotes the metrological management work of enterprises and institutions. The software is compatible with all pressure instruments produced by our company. The software's operating environment is: Win7/10 platform, with a simplified Chinese operating interface.

1. Fully complies with national metrological inspection and verification regulations.

2. User-friendly and convenient operation.

3. Comprehensive calibration setup information.

4. Can perform automated human-machine verification on various pressure gauges.

5. Automatically collects standard data.

6. Calculation of measurement data can be performed according to procedures.

II. Basic System Functions:

1. Can be configured with a camera for automatic recognition of digital gauge readings, achieving full automatic calibration of digital pressure gauges

2. Can calibrate digital pressure gauges, precision pressure gauges, and pressure transmitters.

3. Supports editing and storing parameters such as effective piston area, weight of the mass, deformation coefficient correction, acceleration due to gravity, and medium density; facilitates communication with the piston component section, collects the working status of the piston system (rotational speed, suspension state) and environmental data (lab temperature, humidity), and provides real-time feedback on the piston's operational dynamics and stability through the software.

4. Supports storage of data in commonly used databases.

III. System Features:

1. The system features automatic control capabilities, enabling it to automatically collect data and conduct self-calibration.

2. Utilizes Win7/10 platform with network capabilities, allowing managers to view the calibration status of the instruments online.

3. The software features automatic fault identification for instruments, overload protection alarms, and provides prompts, warnings, and emergency stop commands based on abnormal conditions encountered during use.

4. Results can be traced back, and historical data can be searched by equipment, inspection number, or calibration date: It allows for convenient viewing of calibration status for a specific instrument or inspection number, avoiding the cumbersome task of creating a calibration record book for each instrument.

IV. System Composition:

1. Hardware Configuration

1) Computer

2) PR Series Full-Automatic Piston-Type Pressure Gauge

Printer

2. Software Configuration

1) Operating System: Genuine Win7/10.

2) Measurement Management Software: Manages inspection numbers, instruments, standard equipment, management staff, and calibration personnel.

3) Database Maintenance Software: Establish and modify databases.

4) Calibration Software: Digital Pressure Gauges, Calibration Transmitters, Indicator Meters.

5) Communication Interface Software: USB, RS232, RS485