LEYBOLD TTR91RN-16KF Vacuum Gauge 1PCS 21L1011100

( Brand: Leybold ), ( Manufacturer Part Number: TTR91RN-16KF ), ( Part Type: Vacuum Gauge )

Review LEYBOLD 1pcs New Vacuum Gauge

The **Leybold TTR91RN-16KF 21L1011100** is a high-performance, compact thermal conductivity vacuum gauge designed for precision measurement in industrial, research, and laboratory applications where reliable and accurate pressure monitoring is critical. This gauge operates on the principle of thermal conductivity, making it particularly well-suited for measuring pressures in the rough vacuum to medium vacuum range, typically spanning from approximately **10 mbar (0.001 Torr) up to 10 mbar (1 atmosphere)**. Engineered with Leybold s reputation for durability and precision, the TTR91RN-16KF features a robust **KF-16 (ISO-K) flange connection**, ensuring a secure and leak-tight interface with vacuum systems while maintaining ease of installation and maintenance. Its compact yet sturdy design allows for seamless integration into existing setups, whether in semiconductor manufacturing, chemical processing, or scientific research environments where space optimization is essential.

At the heart of this gauge lies a **highly sensitive thermal sensor**, which detects minute changes in heat transfer within the gas medium, translating these variations into precise pressure readings. The internal construction incorporates a **ceramic or metal housing** to withstand thermal cycling and mechanical stress, ensuring long-term stability and resistance to corrosion critical factors in demanding industrial applications. The gauge s **digital output interface** (often compatible with Leybold s Vacuum Controller or external data acquisition systems) provides real-time monitoring and logging capabilities, enabling operators to maintain optimal process conditions with confidence. Additionally, its **wide operating temperature range** (typically from **-20 C to 80 C**) ensures consistent performance across varying environmental conditions, further enhancing its versatility.

For users seeking reliability and accuracy, the TTR91RN-16KF is calibrated to meet stringent industry standards, offering **low hysteresis and fast response times** to ensure dynamic pressure changes are captured with minimal delay. Its **self-diagnostic features** and built-in error detection mechanisms help prevent operational disruptions by alerting users to potential issues such as sensor drift or gas composition changes. Whether used in **semiconductor wafer processing, vacuum furnaces, or analytical instrumentation**, this gauge delivers the precision and robustness required to maintain critical process parameters. With Leybold s commitment to innovation and quality engineering, the TTR91RN-16KF stands as a dependable choice for professionals demanding both performance and longevity in their vacuum measurement solutions.

**Pros and Cons of buying a Leybold TTR91RN-16KF (21L1011100) Vacuum Gauge**

### **Pros**

1. **High Precision and Reliability** The TTR91RN is a thermal conductivity (Pirani) gauge designed for medium to high vacuum applications (rough to medium vacuum range, typically 10 -3 to 1000 mbar). It provides accurate pressure readings in these ranges, making it suitable for processes requiring consistent vacuum control, such as vacuum furnaces, coating systems, or leak detection.

2. **Durability and Robust Construction** Leybold is a well-established manufacturer in vacuum technology, known for producing durable and long-lasting equipment. The TTR91RN is built to withstand repeated use in industrial environments, reducing the likelihood of frequent failures or replacements.

3. **Compatibility with Leybold Systems** If you already own or plan to integrate other Leybold vacuum components (e.g., pumps, controllers, or valves), this gauge is designed to work seamlessly within their ecosystem. This can simplify installation, calibration, and troubleshooting.

- Vacuum drying and degassing.

- Leak testing and pressure monitoring.

- Thin-film deposition (e.g., sputtering or evaporation).

- Vacuum annealing or heat treatment processes.

5. **Easy Installation and Calibration** Leybold gauges are generally user-friendly, with clear documentation and calibration procedures. The TTR91RN can be mounted on a process line or integrated into a control system with relative ease, depending on the setup.

6. **Long-Term Cost Efficiency** While the upfront cost may be higher than some alternatives, the gauge s reliability and longevity can reduce maintenance and replacement expenses over time, especially in industrial settings where downtime is costly.

7. **Support and Warranty** Leybold offers customer support and warranty coverage, which can be valuable for troubleshooting or repairs. This is particularly important in critical applications where downtime could disrupt operations.

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### **Cons**

1. **Limited Vacuum Range** The TTR91RN is a Pirani gauge, which is optimized for the rough to medium vacuum range (10 -3 to 1000 mbar). If your application requires ultra-high vacuum (UHV) or high vacuum (HV) below 10 -6 mbar, this gauge is not suitable. For such applications, you would need a different type of gauge (e.g., ionization gauge or capacitance manometer).

2. **Higher Initial Cost** Compared to some generic or lower-end vacuum gauges, the Leybold TTR91RN is priced higher. This may be a significant investment, especially for small businesses or hobbyists with limited budgets.

3. **Maintenance Requirements** Like all vacuum gauges, the TTR91RN may require periodic calibration or sensor replacement to ensure accuracy. The thermal conductivity sensor can degrade over time due to exposure to contaminants (e.g., oils, particles), which may necessitate maintenance or replacement.

4. **Dependence on System Cleanliness** Pirani gauges are sensitive to the composition of the gas in the system. If the vacuum environment contains condensable gases (e.g., water vapor, hydrocarbons) or particulate matter, the gauge s performance may be affected. Regular system cleaning or the use of appropriate filters may be required.

5. **Limited Lifespan of Sensors** The internal sensor (Pirani filament) may wear out over time, particularly in harsh conditions. While Leybold provides replacement parts, this adds to the long-term cost of ownership.

6. **Complexity for Non-Experts** While the gauge itself is relatively straightforward, integrating it into a larger vacuum system or control setup may require technical expertise. Misconfiguration or improper installation could lead to inaccurate readings or system malfunctions.

7. **Potential for Drift** Like all gauges, the TTR91RN may experience drift over time, requiring recalibration. This is more likely in dynamic environments where pressure fluctuates rapidly or where the gauge is exposed to extreme conditions.

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### **Conclusion**

The Leybold TTR91RN-16KF (21L1011100) is a high-quality, reliable vacuum gauge well-suited for applications requiring accurate pressure measurement in the rough to medium vacuum range. Its durability, compatibility with Leybold systems, and broad application range make it a strong choice for industrial users, research labs, or manufacturing processes where vacuum control is critical.

However, its limitations such as the restricted vacuum range, higher cost, and sensitivity to environmental factors mean it may not be the best fit for ultra-high vacuum applications or budget-conscious users. Additionally, users must be prepared for potential maintenance needs and the importance of system cleanliness to ensure optimal performance.

### **Recommendation**

- Your application requires pressure monitoring in the rough to medium vacuum range (10 -3 to 1000 mbar).

- You are working with Leybold vacuum systems and need seamless integration.

- You prioritize reliability, precision, and long-term durability over cost savings.

- You have the technical expertise or support to maintain and calibrate the gauge properly.

- You need a gauge for ultra-high vacuum (UHV) or high vacuum (HV) applications (in which case an ionization gauge or capacitance manometer would be better).

- Your budget is limited, and you can find equally effective but lower-cost alternatives (e.g., other Pirani gauges or digital vacuum meters).

- Your vacuum system is prone to contamination (e.g., high levels of water vapor or particulate matter), as this could adversely affect gauge performance.

- You lack the technical knowledge or resources to install, calibrate, or maintain the gauge properly.

- **Cheaper Pirani Gauges:** Brands like Edwards, Pfeiffer, or generic manufacturers may offer lower-cost alternatives with similar functionality.

- **Capacitance Manometers:** If you need a broader range (including high vacuum), a capacitance manometer (e.g., Leybold CMR361) might be more versatile.

- **Digital Vacuum Meters:** For simpler applications, a digital vacuum meter with built-in sensors could be a cost-effective solution.

Ultimately, the Leybold TTR91RN is a solid investment for users who need a dependable, high-performance gauge for medium vacuum applications. Ensure that your specific use case aligns with its capabilities before purchasing.

Details:

part #: ttr91rn16kf price

• $740.00

specifications pressureswitchiz:

• brand: Leybold
• mpn: Ttr91rn-16kf
• part type: Vacuum Gauge

payments pressureswitchiz:

• other
• credit card: Visa
• wallet: Google-pay

seller pressureswitchiz:

• # reviews: 22
• rating: 100.0%
• city: USA

general pressureswitchiz:

• Business Industrial > Hydraulics, Pneumatics, Pumps Plumbing > Air Pressure Gauges
• condition: New

offer pressureswitchiz:

• availability: In Stock
• options: Ship-to-home
• sold: 0
• best offers: True
• started: June 9, 2026

shipping pressureswitchiz:

• service: Standard
• transit: 2-4 Days
• cost: $0.00
• class: Standard
• type: Fixed

returns pressureswitchiz:

• time: 60 Days
• paid by: Buyer
• policy: Returns Accepted
• method: Money back

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