TC618B Portable Fully Automatic Hydraulic Pressure Calibrator for Instrument Calibration

Pressure instruments play an important role in process control, power generation, petrochemical production, and industrial automation. For calibration laboratories and field metrology teams, however, testing large numbers of pressure gauges, transmitters, sensors, and switches can involve significant repetitive work.

Manual pressure generation, stabilization, measurement, calculation, and record keeping can also make the calibration process time-consuming and dependent on operator experience.

The TC618B Portable Fully Automatic Hydraulic Pressure Calibrator is designed to provide an integrated solution for automatic hydraulic pressure calibration. It combines pressure generation, automatic pressure control, precision measurement, electrical signal testing, HART communication, and calibration data management in a portable system.

The TC618B integrates the major functions required for pressure instrument calibration into one system. Instead of using separate pressure sources, reference instruments, electrical measurement equipment, and manual recording tools, operators can complete the calibration process through the integrated control system.

A typical automatic calibration workflow includes:
1. Entering the information of the instrument under test.
2. Selecting the required calibration parameters.
3. Setting calibration pressure points and test cycles.
4. Automatically generating and stabilizing the required pressure.
5. Collecting reference pressure and instrument output values.
6. Calculating measurement errors and related results.
7. Saving calibration records for later review and export.

The system can perform ascending and descending pressure tests, helping reduce repetitive manual operations during pressure gauge and pressure transmitter calibration.

Stable hydraulic pressure is essential for accurate calibration, particularly when testing high-precision pressure instruments.

The TC618B uses an automatic pressure control system with intelligent regulation to adjust the pressure generation process according to the target value. Pressure can be automatically generated, stabilized, and maintained at preset calibration points.

For the applicable configuration, pressure stability can reach 0.005% F.S., supporting calibration applications involving precision pressure instruments.

The system can also be configured with different pressure measurement modules to match the required calibration range and accuracy.

The TC618B supports modular digital pressure measurement, allowing users to select suitable pressure standards for different calibration applications.

Available pressure module accuracy classes can include:
· 0.05 class
· 0.02 class
· 0.01 class

Depending on the configuration, pressure modules can cover ranges from low-pressure applications to high-pressure hydraulic calibration.

The modular design allows pressure standards to be selected or replaced according to specific testing requirements. This can be useful for calibration laboratories that need to handle instruments with different pressure ranges without replacing the complete calibration system.

The system can also support built-in or external pressure measurement modules, depending on the selected configuration.

Pressure transmitter calibration often requires simultaneous pressure and electrical signal measurement. The TC618B integrates electrical measurement functions to reduce the number of external instruments required during testing.

Key electrical functions include:

The built-in DC24V loop power supply can provide power for compatible pressure transmitters during calibration.

The switch measurement function can also detect pressure switch action points during controlled pressure changes, making the system suitable for pressure switch calibration and verification.

Modern pressure transmitters often use HART communication for configuration and maintenance. The TC618B can integrate HART communication for compatible smart pressure transmitters.

During calibration, users can access transmitter parameters such as:
· Measurement range
· Zero point
· Range settings
· Configuration information
· Damping parameters
· Digital output information

Combining pressure generation, electrical measurement, and HART communication in one system can simplify the calibration workflow and reduce the need for additional field instruments.

Calibration work requires not only accurate measurement but also complete and traceable records.

The TC618B can automatically collect calibration data during the testing process. Reference pressure values, instrument readings, calculated errors, and test results can be stored digitally.

A typical data workflow includes:
Instrument Information → Calibration Settings → Automatic Pressure Generation → Data Acquisition → Error Calculation → Result Evaluation → Data Storage

The system can retain historical calibration records and support data export for further processing and documentation.

For laboratories moving toward digital or paperless calibration management, this workflow can help reduce manual transcription and improve the consistency of calibration records.

The TC618B is designed as a portable pressure calibration system, allowing calibration work to be performed both in laboratories and at industrial sites.

Its portable configuration is particularly useful when pressure instruments are distributed across large facilities or difficult-to-access equipment areas.

Typical applications include:
· Industrial plant maintenance
· Power plant instrumentation
· Petrochemical facilities
· Calibration laboratories
· Field metrology services
· Industrial automation
· Pressure instrument maintenance

For on-site applications, a portable hydraulic pressure calibrator can reduce the need to remove instruments and transport them back to a laboratory, depending on the specific calibration requirements.

Pressure Gauge Calibration

The TC618B can automatically generate preset hydraulic pressure points and collect measurement results for pressure gauge calibration.

Ascending and descending tests can be used to evaluate indication errors and related performance characteristics.

Pressure Transmitter Calibration

With integrated pressure generation, electrical measurement, DC24V loop power, and HART communication, the system can support calibration and adjustment of compatible pressure transmitters.

Pressure Switch Testing

The automatic pressure control system can gradually change pressure while monitoring the switch output, helping identify pressure switch action and reset points.

Calibration Laboratory Applications

Calibration laboratories can use the TC618B as an integrated hydraulic pressure calibration platform for repeated testing of pressure gauges, transmitters, sensors, and switches.

The TC618B Portable Fully Automatic Hydraulic Pressure Calibrator integrates hydraulic pressure generation, automatic pressure control, digital pressure measurement, electrical signal testing, HART communication, and calibration data management into a single platform.

With modular pressure standards and portable operation, it can be used for pressure gauge calibration, pressure transmitter calibration, pressure switch testing, and industrial hydraulic pressure calibration.

For calibration laboratories, industrial maintenance teams, and field metrology services, the TC618B provides an integrated approach to simplifying repetitive calibration procedures and improving the efficiency of pressure instrument testing.