MKS 627D11TQC4B Baratron Capacitance Manometer Torr Manometer.

( Brand: Mks ), ( Manufacturer Part Number: 627D11TQC4B )

Review MKS Baratron Capacitance Manometer. Range Torr

The **MKS Instruments 627D11TQC4B Baratron Capacitance Manometer** is a high-precision, absolute pressure sensing device designed for demanding applications requiring exceptional accuracy, stability, and reliability in low-pressure environments. Part of MKS s renowned Baratron series, this model operates on the principle of capacitance measurement, where a flexible diaphragm s displacement proportional to the applied pressure modulates the capacitance between two electrodes. The 627D11TQC4B is specifically configured for a full-scale range of **10 Torr (13.33 mbar or 1.76 kPa)**, making it ideal for applications in vacuum systems, semiconductor processing, thin-film deposition, gas analysis, and other industries where precise pressure control or monitoring is critical. Its **11-inch (279.4 mm) long sensor body** ensures compatibility with standard process equipment, while the **TQC4B** designation indicates a **1/4-inch NPT (National Pipe Thread) male process connection**, providing flexibility for integration into existing piping or chamber setups. The manometer features a **highly stable, temperature-compensated capacitance sensor** with a **linear output**, ensuring minimal drift and repeatable measurements even under fluctuating thermal conditions. Its **absolute pressure measurement capability** eliminates the need for reference pressures, delivering direct, accurate readings without calibration dependencies. The device is constructed from durable materials, including stainless steel and corrosion-resistant coatings, to withstand harsh environments, including exposure to aggressive gases, moisture, and temperature variations within its specified operating range of **-40 C to 125 C**. For enhanced usability, the Baratron can be paired with MKS s **Baratron Controller** or **Baratron Transducer** modules, which provide digital or analog outputs for seamless integration into control systems, data acquisition setups, or automated processes. Whether used in research laboratories, industrial manufacturing, or specialized vacuum applications, the 627D11TQC4B delivers unmatched performance, making it a cornerstone for precision pressure measurement in environments where accuracy and reliability are non-negotiable.

**Pros and Cons of buying a MKS 627D11TQC4B Baratron Capacitance Manometer (10 Torr)**

### **Pros**

1. **High Precision and Accuracy** The Baratron series is known for its exceptional accuracy and repeatability, making it ideal for applications requiring precise pressure measurements. The 10 Torr range is well-suited for vacuum systems where moderate pressures are monitored.

2. **Wide Compatibility** The device is designed to integrate seamlessly with MKS instrumentation and other vacuum systems, offering compatibility with various controllers, gauges, and process systems. This reduces the need for additional adapters or converters.

3. **Stability and Reliability** Capacitance manometers like the Baratron are known for their long-term stability, minimal drift, and resistance to environmental factors such as temperature fluctuations (within specified limits). This ensures consistent performance over extended periods.

4. **Durability and Low Maintenance** The Baratron s construction is robust, with no moving parts (other than the internal sensing mechanism), which reduces wear and tear. This translates to lower maintenance requirements and longer operational life compared to mechanical gauges.

5. **Fast Response Time** The device provides quick pressure readings, which is beneficial in dynamic vacuum systems where rapid changes in pressure need to be monitored or controlled.

6. **Versatile Applications** Suitable for a range of industries, including semiconductor manufacturing, research laboratories, medical devices, and industrial vacuum processes. The 10 Torr range is particularly useful for processes like thin-film deposition, etching, or vacuum drying.

7. **Digital Output Options** Many Baratron models offer analog (e.g., 4-20 mA) or digital (e.g., RS-232, Profibus) outputs, allowing for easy integration into automated control systems. The specific model may support these features, depending on the configuration.

8. **Calibration Flexibility** The Baratron can be calibrated to match specific requirements, and some models allow for field calibration, reducing downtime for recalibration.

9. **Low Outgassing** Unlike some mechanical gauges, capacitance manometers do not contribute significantly to outgassing in vacuum systems, which is critical in ultra-high-vacuum (UHV) or cleanroom environments.

10. **Backed by a Reputable Brand** MKS Instruments is a well-established manufacturer in the vacuum and gas measurement industry, offering strong technical support, warranties, and access to spare parts.

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### **Cons**

1. **Higher Initial Cost** Compared to mechanical gauges (e.g., Pirani or Penning gauges), the Baratron is more expensive upfront. This may be a barrier for small labs or budget-conscious applications.

2. **Limited Pressure Range** The 10 Torr range is not suitable for high-vacuum or ultra-high-vacuum applications (typically below 10 -3 Torr). For such applications, a different gauge (e.g., ionization gauge) would be required.

3. **Temperature Sensitivity** While Baratrons are stable within specified temperature ranges (typically 0 50 C or -40 85 C, depending on the model), extreme temperature variations can affect accuracy. Additional temperature compensation may be needed in harsh environments.

4. **No Built-in Pumping Mechanism** The Baratron is a measuring device only and does not actively pump or control pressure. It must be paired with a vacuum pump or controller for system regulation.

5. **Potential for Condensation or Contamination** In environments with high humidity or corrosive gases, condensation or chemical reactions could affect the sensor s performance over time. Proper shielding or selection of compatible materials may be necessary.

6. **Calibration Dependency** While Baratrons are stable, they still require periodic calibration to maintain accuracy. This adds to long-term operational costs, especially if external calibration services are required.

7. **Limited Mechanical Robustness** Although durable, the Baratron is not designed for harsh mechanical environments (e.g., high vibration or shock). Proper mounting and protection may be needed in industrial settings.

8. **Learning Curve for Setup** Integrating the Baratron into a custom system may require technical expertise, particularly when configuring digital outputs, calibration settings, or interfacing with control software.

9. **Spare Parts and Obsolescence** As with any specialized equipment, older models may become harder to service as the manufacturer discontinues support. Always verify the availability of spare parts before purchase.

10. **Overkill for Simple Applications** For basic vacuum monitoring where lower precision is acceptable, a simpler or cheaper gauge (e.g., a mechanical gauge) may suffice, making the Baratron an unnecessary investment.

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### **Conclusion**

The **MKS 627D11TQC4B Baratron Capacitance Manometer (10 Torr)** is a high-quality, precision instrument ideal for applications requiring accurate and stable pressure measurements in the moderate vacuum range. Its strengths lie in its reliability, compatibility with advanced systems, and low maintenance requirements, making it a valuable asset for research, semiconductor, or industrial vacuum processes. However, its higher cost, limited pressure range, and specific environmental requirements may not justify its purchase for all applications.

For users who prioritize **accuracy, integration with automated systems, and long-term stability**, the Baratron is an excellent choice. Conversely, **budget-conscious users or those requiring high-vacuum measurements** may find more cost-effective or specialized alternatives.

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### **Recommendation**

- You need precise pressure measurements in the 10 Torr range.

- Your system requires integration with MKS controllers or digital interfaces.

- Stability, repeatability, and low maintenance are critical for your application.

- You are working in industries like semiconductor manufacturing, research labs, or medical device production where high accuracy is non-negotiable.

- Your budget is limited, and a mechanical gauge (e.g., Pirani) would suffice.

- You require measurements in ultra-high vacuum (below 10 -3 Torr), in which case an ionization gauge or cold cathode gauge may be better.

- Your environment has extreme temperature fluctuations or corrosive gases that could affect the sensor.

- Verify the specific model s technical specifications (e.g., temperature range, output options) to ensure compatibility with your system.

- Check for available warranties, calibration services, and local support from MKS or authorized distributors.

- If possible, test the gauge in your environment before finalizing the purchase to confirm performance.

Details:

Range 10 Torr, Used. BW10H Range 10 Torr. MKS Baratron 627D11TQC4B Capacitance Manometer. Minor scratches and surface wear.

Removed from Working Environment. Please see pictures for further.

part #: 627d11tqc4b prices

• $360.00-$672.00

specifications valvplu:

• brand: Mks
• mpn: 627d11tqc4b

general valvplu:

• condition: Used
• Pumps Pump Accessories > Vacuum Pumps > Rotary Vane Pumps

seller valvplu:

• # reviews: 389
• rating: 100.0%
• city: York, Maine

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returns valvplu:

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• time: 30 Days
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offer valvplu:

• quantity: 4
• availability: In Stock
• sold: 0
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• started: April 13, 2026
• options: Ship-to-home

shipping valvplu:

• carrier: UPS
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• transit: 3-7 Days
• cost: $51.36
• type: Calculated

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