GRANVILLE-PHILLIPS 260008 Thermo Gauge Connectors Socket Philips 531

( Brand: Granville-phillips ), ( Manufacturer Part Number: 260008 ), ( Type: 531 )

Review GRANVILLE PHILLIPS 260 Thermo gauge Type 531 Connectors And Socket

The **Granville-Phillips 260008 260 Thermocouple Gauge with 531 Connectors and Socket** is a precision-engineered, high-performance vacuum measurement instrument designed for applications requiring accurate and reliable thermocouple-based pressure monitoring in scientific, industrial, and research environments. Part of Granville-Phillips renowned line of vacuum gauges, this model combines robust construction with advanced thermocouple technology to deliver precise readings across a broad pressure range, making it an indispensable tool for processes such as thin-film deposition, semiconductor fabrication, surface treatment, and materials research. The gauge operates on the principle of measuring the thermal conductivity of a gas, where a heated filament s cooling rate correlates directly with the surrounding pressure, providing real-time feedback essential for maintaining optimal conditions in vacuum systems. Its **260 thermocouple range** spans from **10 to 10 Torr (1 mTorr to 100 mTorr)**, offering versatility for applications where moderate vacuum levels demand both sensitivity and stability. The **531 connectors** likely referring to the gauge s interface components ensure seamless integration with vacuum chambers, process controllers, or data acquisition systems, while the **socket** facilitates easy installation and replacement of the thermocouple element, minimizing downtime and enhancing operational efficiency. Constructed with durability in mind, the gauge features a **metal enclosure** to protect internal components from environmental factors, and its **digital or analog output** (depending on the specific model variant) allows for flexible monitoring and control, whether through direct readout or integration with automated systems. Whether used in academic laboratories, industrial manufacturing, or specialized research facilities, this thermocouple gauge exemplifies Granville-Phillips commitment to precision instrumentation, delivering consistent performance and long-term reliability for critical vacuum applications.

### **Pros and Cons of buying a Granville-Phillips 260008 (260 Thermocouple Gauge with 531 Connectors and Socket)**

1. **High Precision and Reliability** Granville-Phillips is a well-established brand known for manufacturing high-quality vacuum gauges, particularly in scientific and industrial applications. The 260 thermocouple gauge is designed for accurate pressure measurement in low to medium vacuum ranges (typically 10 -6 to 10 -2 Torr), making it suitable for research, semiconductor processing, and thin-film deposition.

2. **Compatibility with Thermocouple Gauges** The 260 gauge is a thermocouple-type gauge, which is ideal for applications where simplicity, durability, and moderate accuracy are required. It works well with standard thermocouple elements (e.g., Type K or C) and is often used in systems where other gauge types (like ionization gauges) may be overkill.

3. **Durability and Longevity** Thermocouple gauges are generally robust and less prone to damage from arcing or high-energy particles compared to ionization gauges. They are also less sensitive to contamination, making them a reliable choice for long-term use in clean environments.

- **Semiconductor manufacturing** (for process monitoring in sputtering, CVD, or etching).

- **Thin-film deposition** (e.g., PVD, ALD).

- **Research laboratories** (for vacuum chamber monitoring).

- **Industrial vacuum systems** (where moderate precision is sufficient).

5. **Easy Installation and Maintenance** The 531 connectors and socket design allow for straightforward integration into existing vacuum systems. Replacement of thermocouple elements is relatively simple, reducing downtime.

6. **Cost-Effective for Moderate Vacuum Needs** Compared to more advanced gauges (e.g., Bayard-Alpert ionization gauges or capacitance manometers), thermocouple gauges are less expensive while still providing useful pressure readings in their operational range.

7. **Compatibility with Control Systems** Many Granville-Phillips gauges can interface with standard vacuum controllers or data acquisition systems, making them easy to integrate into automated processes.

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1. **Limited Pressure Range** The 260 gauge is only effective in the **10 -6 to 10 -2 Torr** range. For ultra-high vacuum (UHV) applications (below 10 -8 Torr) or high-pressure systems, other gauge types (e.g., ionization gauges, Pirani gauges, or capacitance manometers) are required. This may necessitate additional gauges in a system, increasing complexity and cost.

2. **Lower Accuracy Compared to Advanced Gauges** While adequate for many industrial and research applications, thermocouple gauges are not as precise as ionization gauges or capacitance manometers, especially at very low pressures. They may require calibration over time.

3. **Sensitivity to Thermal Effects** Thermocouple gauges can be affected by temperature fluctuations in the vacuum chamber, leading to potential measurement errors if the environment is not stable.

4. **No Direct Measurement of Gas Composition** Unlike mass spectrometers or residual gas analyzers (RGAs), a thermocouple gauge does not provide information about the type of gas present only the total pressure. This limits its usefulness in applications requiring gas identification.

5. **Potential for Drift Over Time** Like all gauges, thermocouple elements can degrade or drift, requiring periodic recalibration or replacement. This adds to maintenance costs and effort.

6. **Limited Use in Corrosive or Reactive Environments** If the vacuum system exposes the gauge to aggressive chemicals or reactive gases, the thermocouple element or connectors may degrade prematurely.

7. **No Built-In Pumping Function** Unlike some combined gauge/pump units (e.g., turbomolecular pumps with integrated gauges), the 260 gauge requires an external pumping system, adding to the overall setup complexity.

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The **Granville-Phillips 260008 (260 Thermocouple Gauge with 531 Connectors and Socket)** is a **practical and cost-effective choice** for applications requiring **moderate vacuum measurement (10 -6 to 10 -2 Torr)** in industrial, research, or semiconductor environments. Its **durability, simplicity, and compatibility with existing systems** make it a solid option for users who do not require ultra-high precision or gas analysis.

However, if your application demands **ultra-high vacuum (UHV), high-pressure ranges, or gas composition monitoring**, this gauge may not be sufficient on its own, and additional gauges (e.g., ionization gauges, RGAs) would be necessary. Additionally, users should account for **potential drift, thermal sensitivity, and maintenance requirements** when evaluating long-term reliability.

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- You need a **reliable, mid-range vacuum gauge** for applications like **semiconductor processing, thin-film deposition, or general lab use**.

- Your system operates within **10 -6 to 10 -2 Torr** and does not require UHV or gas analysis.

- You prioritize **durability, ease of installation, and cost efficiency** over ultra-high precision.

- You require **ultra-high vacuum (below 10 -8 Torr)**, in which case an **ionization gauge (e.g., Bayard-Alpert) or capacitance manometer** would be better.

- Your system involves **corrosive or reactive gases**, which may damage the thermocouple element.

- You need **gas composition analysis**, necessitating a **residual gas analyzer (RGA)**.

- You require **high-pressure monitoring**, where a **Pirani gauge or mechanical gauge** may be more appropriate.

- An **external vacuum pump** (e.g., turbomolecular, diffusion, or rotary pump) to ensure proper system operation.

- A **vacuum controller** for automated monitoring and data logging.

- A **backup gauge** (e.g., ionization gauge) if UHV capability is needed later.

For most **moderate vacuum applications**, the Granville-Phillips 260 gauge remains a **sound investment** due to its **proven reliability and widespread compatibility**. However, always verify that your specific use case aligns with its operational limits before purchasing.

Details:

Complete Type 531 thermo couple vacuum gauge setup from Granville-Phillips / Runway: 1x Thermo-Gauge Sensor Head Catalog No. The sensor tube plugs into the socket, and Runway connectors link to your gauge controller. Good physical condition with normal wear. 260008 stainless steel body with mounting flange, labeled Thermo-Gauge warning label, 1x Type 531 matching terminal block socket 8-position screw terminals circular flange, Perfect for vacuum systems, lab equipment, scientific instruments, and process control.

Untested but expected to function sold as-is. Specs Overview: Thermo couple thermal conductivity gauge for rough vacuum atmosphere to 10 Tore, Robust industrial build, condition: Used, pulled from working equipment.

part #: 260008 price

• $100.00

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• brand: Granville-phillips
• mpn: 260008
• type: 531

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• Test, Measurement Inspection > Test Meters Detectors > Other Test Meters Detectors
• condition: Used

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• started: June 9, 2026

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• cost: $9.52

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