MC300 Pressure Controller
High Accuracy, Fast Pressurization, and Long-Term Stability — All in One Instrument
The MC300 Pressure Controller incorporates Yokogawa's proprietary silicon resonant sensor and a needle valve servo mechanism to deliver high-accuracy pressure control. With an output relative accuracy of ±0.04% and a 12-month accuracy guarantee period, it provides stable pressure control over extended operating periods.
The MC300 is used across a wide range of process management and production automation applications that require precise pressure control, including production line inspection of pressure sensors and pneumatic devices, compliance testing of blood pressure monitors, leak testing of enclosures, and calibration of differential pressure and pressure transmitters.
Table of Contents
Why Choose the MC300
Output Relative Accuracy ±0.04%
Powered by Yokogawa's proprietary silicon resonant sensor and precision needle-valve flow control, the MC300 delivers an output relative accuracy of ±0.04%. Extremely low hysteresis, excellent linearity, and high repeatability ensure stable pressure control. In a pressurization and depressurization cycle test with the 200 kPa range model, the deviation has been confirmed to remain within approximately 10 ppm.
Reliable Pressure Accuracy
In conventional pressure controllers, the accuracy specification typically refers to the internal pressure sensor's accuracy. The MC300's output relative accuracy of ±0.04% is specified for the pressure actually output from the controller, not the measurement accuracy of the internal sensor. This allows users to clearly understand the basis for pressure accuracy in inspection and testing as a specification value.
12-Month Accuracy Guarantee
The MC300's output relative accuracy of ±0.04% is maintained throughout the 12-month accuracy guarantee period. Since accuracy variations due to aging are also covered within this guarantee, users can operate with stable accuracy not only immediately after calibration but throughout the entire period until the next calibration.
High-Speed, Smooth Pressurization
The MC300 achieves a response time of less than 5 seconds* and low overshoot simultaneously under typical conditions. Its needle valve mechanism performs precise flow control as the pressure approaches the setpoint, enabling high-speed pressurization while reducing the risk of overpressure at the DUT (Device Under Test).
This combination of speed and stability is derived from the characteristics of the MC300's needle valve design. In conventional solenoid-valve-based pressure controllers, pressure is regulated by rapid valve opening and closing, which tends to create a trade-off: increasing speed leads to greater overshoot, while prioritizing stability slows the response. The MC300's needle valve mechanism uses a motor-driven needle to adjust airflow continuously and smoothly, eliminating this trade-off. Near the setpoint, particularly fine flow control is performed, allowing the pressure to reach a stable level quickly while suppressing overshoot.
*Response time varies depending on pressurization conditions and load volume.
Long-Life Needle Valve Design
The needle valve mechanism employed in the MC300 also offers the significant advantage of structural longevity. The needle valve controls airflow by continuously adjusting the position of a motor-driven needle. Unlike solenoid valve systems, it does not involve rapid valve opening and closing, resulting in minimal component wear and stable operation over extended periods.
This durability is also important from a lifecycle cost perspective. Pressure controllers are often used over long periods in production lines and inspection processes, and the frequency of repairs and maintenance caused by valve wear directly impacts operating costs. The MC300's needle valve mechanism has structurally fewer wear factors, offering the potential for reduced maintenance burden during long-term operation.
Negative Pressure Output without Vacuum Pump
Conventional pressure controllers require external equipment such as a vacuum pump to output pressure near the zero point or micro negative pressure. The MC300 generates negative pressure down to −1.2% of its full range without using an external negative pressure source. This simplifies system setup and enables a single instrument to handle applications requiring negative pressure conditions, such as compliance testing of blood pressure monitors.
Key Functions
Output Division and Auto-Step Output
The MC300 features an output division function that divides the set pressure into a desired number of output steps. By setting the target pressure to match the full scale of the DUT and specifying the number of divisions, users can perform step-up and step-down operations at the touch of a button.
| Output Division | Outputs the set pressure divided at a ratio of n/m. The number of divisions m can be set from 1 to 25, and n/m can be set up to 100%. |
|---|---|
| Auto-Step | Automatically executes divided outputs sequentially. Interval time: 10 s to 600 s (resolution: 5 s). Repetitions: 1 or infinite (can be paused). |
Sweep Output and Repeat
The MC300's sweep output function delivers smooth, continuous linear pressure output from zero to full scale. The increase/decrease direction is switchable, making it suitable for applications such as pressure switch actuation verification, meter testing, and clog detection.
When combined with the repeat function, the sweep or auto-step output can be executed continuously, improving the efficiency of automated testing. The sweep output interval time can be set from 15 s to 600 s (resolution: 5 s), and the number of repetitions can be selected from 1 or infinite (can be paused).
Pressure Output Status Monitoring
The MC300 displays pressure values measured by the built-in sensor on the screen in real time. It also supports analog output (D/A output), enabling output to external recorders and measurement systems.
With the comparator output function, the display color changes from white to green when the output pressure reaches the specified range, allowing the pressure stability status to be visually confirmed at a glance.
Product Lineup
The MC300 offers two gauge pressure models to suit different applications. The 10 kPa range model is designed for precision control in the low-pressure range, while the 200 kPa range model covers a wide pressure range including blood pressure monitor testing. Both models deliver an output relative accuracy of ±0.04%.
10 kPa Range Model
Model MC300-G01 is a gauge pressure 10 kPa range pressure controller. With a setting resolution of 0.001 kPa and output noise of ±0.005 kPa, it provides precise control performance suited for applications requiring high-accuracy pressure control in the low-pressure range.
200 kPa Range Model
Model MC300-G03 is a gauge pressure 200 kPa range pressure controller. It covers the pressure range up to 40 kPa (300 mmHg) required for blood pressure monitor testing with ample margin, and offers a setting resolution of 0.01 kPa and output noise of ±0.04 kPa.
| MC300-G01 | MC300-G03 | |
|---|---|---|
| Pressure range | Gauge pressure 10 kPa | Gauge pressure 200 kPa |
| Output setting range | −0.12 kPa to +12 kPa | −2.4 kPa to +240 kPa |
| Setting resolution | 0.001 kPa | 0.01 kPa |
| Output noise | ±0.005 kPa | ±0.04 kPa |
Applications
Blood Pressure Monitor Testing
Blood pressure monitor manufacturing inspections and compliance testing require accurate pressure control up to 40 kPa (300 mmHg). The MC300's 200 kPa range model covers this pressure range with ample margin and can be used for both production and development of blood pressure monitors and medical devices with integrated blood pressure measurement functions.
The MC300 is capable of generating negative pressure without the use of a vacuum pump, allowing functional testing under negative pressure conditions specified by applicable standards using a single instrument. Furthermore, by using the MT300 Precision Pressure Monitor (Gauge Pressure model) alongside the MC300, pressure can be monitored directly near the DUT, improving inspection accuracy.
Leak/Airtightness Testing of Enclosures
Leak (airtightness) testing is commonly used to evaluate the waterproof and dustproof performance of enclosures using the pressure change method. In this approach, the test object is pressurized to a specified starting pressure and, after a defined stabilization period, the pressure change is measured to confirm compliance with allowable leakage limits.
The reliability of the test depends on the stability and repeatability of the starting pressure. The MC300 delivers smooth, highly repeatable pressurization to the target pressure, reducing variation in starting pressure and ensuring consistent, reliable test results even in scenarios such as shipping inspections where large numbers of products are repeatedly measured. It supports a wide range of inspection processes, from individual evaluations during development to shipping inspections on mass production lines. Adding an MT300 Precision Pressure Monitor enables even higher-accuracy monitoring.
Submersible Water Level Meter Testing
During development and testing of submersible water level meters, creating actual water levels — for example, 20 meters — is challenging. Instead, a pressure controller is used to apply equivalent air pressure to simulate an underwater environment.
The MC300 provides rapid pressurization to the target pressure with minimal overshoot and extremely low hysteresis, delivering stable, high-quality pressure control for water level meter applications. It maintains precise control during both pressurization and depressurization, enabling the acquisition of reliable test data with minimal overpressure and hysteresis effects.
Pressure Transmitter Calibration
Differential pressure and pressure transmitters used in plant process management require regular calibration to maintain measurement accuracy. The MC300 provides the precise and stable pressure generation required for transmitter calibration.
By utilizing the auto-step function, multi-point pressure increase and decrease testing can be automated, enabling efficient high-accuracy calibration with minimal hysteresis.When used together with the MT300 Precision Pressure Monitor, the MC300 enables fully automated comparison calibration. The MT300 can also be equipped with a 24 V power supply and voltage/current measurement functions, eliminating the need for external power supplies or multimeters and enabling a compact calibration setup.
About Yokogawa Test & Measurement
Business Overview
Yokogawa Test & Measurement Corporation is a member of the Yokogawa Electric Corporation group, responsible for the test and measurement instrument business. The company develops, manufactures, and sells a broad range of precision measurement solutions including oscilloscopes, power analyzers, data acquisition systems, optical test equipment, and pressure measurement instruments.
In the field of pressure measurement, the company offers a pressure measurement platform built around its proprietary silicon resonant sensor technology. Through a product lineup that includes the MT300 Precision Pressure Monitor, the CA700 Pressure Calibrator, and the MC300 Pressure Controller, the company supports customers' pressure measurement needs from the lab to the field.
Company Profile
| Company Name | Yokogawa Test & Measurement Corporation |
|---|---|
| Headquarters | 9-8, Myojin-cho 4-chome, Hachioji-shi, Tokyo 192-8566, Japan — Keio Hachioji Myojin-cho Building |
| Established | July 1954 |
| URL | https://tmi.yokogawa.com/ |