Seismic monitoring requires precise, reliable instrumentation capable of detecting and recording ground motion with high fidelity. Two popular categories of seismometers in modern applications are Standard Broadband Seismometers and Compact Broadband Seismometers. Each has unique advantages and trade-offs depending on portability, installation, power consumption, temperature sensitivity, and performance characteristics. In this article, we compare the SS08 (Standard Broadband Seismometer) and SS08C (Compact Broadband Seismometer), highlighting their respective strengths and weaknesses to help you choose the best sensor for your application.
1. Overview of SS08 and SS08C
SS08 – Standard Broadband Seismometer
The SS08 is a high-sensitivity, ultra-low noise broadband triaxial seismometer, designed for observatory-grade seismic monitoring, planetary geophysics, and tsunami early warning systems. It features automatic mass centering, electric mass locking, and magnetic shielding, making it ideal for long-term deployments in both field and laboratory environments.
SS08C – Compact Broadband Seismometer
The SS08C is a lightweight, portable broadband triaxial seismometer designed for quick deployment in various environments, including reservoir microseismic monitoring, soil property inspection, and microzonation studies. Its compact form factor, low power consumption, and ease of deployment make it suitable for applications requiring rapid setup and mobility.
2. Key Comparison Factors
| Feature | SS08 (Standard) | SS08C (Compact) |
|---|---|---|
| Portability | ❌ Heavier (15kg), requires careful handling | ✅ Lightweight (1.42kg), easy to transport |
| Installation | ❌ Requires precise leveling, mass centering | ✅ Fast deployment, usable within minutes |
| Power Consumption | ✅ Low (<500mW @ 12VDC) | ✅ Ultra-low (<500mW @ 12VDC) |
| Self-Noise | ✅ Below USGS NLNM (0.004 – 25Hz) | ✅ Below USGS NLNM (0.03 – 10Hz) |
| Dynamic Range | ✅ >150dB (0.1 – 10Hz) | ❌ >135dB (0.1 – 10Hz) |
| Temperature Sensitivity | ✅ Wide range (-20°C to +70°C) | ❌ Narrower range (-20°C to +50°C) |
| Mass Centering | ✅ Automatic mass centering | ❌ Not necessary due to small size |
| Housing Options | ✅ Rugged aluminum, IP68K | ✅ Multiple options: borehole, posthole (AISI316) |
| Shock Resistance | ✅ 5g half sine | ✅ 5g half sine |
| Applications | ✅ Long-term, observatory-grade | ✅ Short-term, rapid deployment |
3. Pros & Cons of SS08 vs. SS08C
SS08 – Standard Broadband Seismometer
✅ Pros:
- High sensitivity and precision for observatory-grade monitoring
- Lower self-noise, superior dynamic range (>150 dB)
- Wide temperature operation (-20°C to +70°C)
- Automatic mass centering and electric mass lock
- Excellent for long-term seismic monitoring
❌ Cons:
- Larger and heavier (15kg), making transport difficult
- Requires leveling and careful installation
- Longer setup time
SS08C – Compact Broadband Seismometer
✅ Pros:
- Highly portable (1.42kg), ideal for field deployment
- Quick and simple installation, similar to a geophone
- Suitable for posthole deployments without special care
- Energy-efficient for remote installations
❌ Cons:
- Slightly higher self-noise at lower frequencies
- Narrower dynamic range (>135dB vs. >150dB)
- Limited temperature range (-20°C to +50°C)
4. Choosing the Right Sensor for Your Needs
Choose the SS08 if:
- You need ultra-low noise performance for high-precision monitoring.
- Your project involves long-term deployments in observatories or seismic networks.
- You require automatic mass centering and electric mass locking.
- You are working in extreme temperature conditions (-20°C to +70°C).
Choose the SS08C if:
- You need a lightweight, compact sensor for fieldwork.
- Your application requires quick deployment and ease of use.
- You operate in shallow posthole or surface installations.
- You need low power consumption for remote monitoring.
Conclusion
Both the SS08 and SS08C serve distinct purposes in seismic monitoring. While the SS08 excels in precision, long-term observatory use, and extreme environmental conditions, the SS08C is ideal for rapid deployment, portability, and energy-efficient remote installations. Selecting the right sensor depends on your specific project requirements, including installation constraints, power availability, and monitoring objectives.
🔗 Purchase SS08: SS08 Broadband Seismometer
🔗 Purchase SS08C: SS08C Compact Broadband Seismometer
For more information or to request a quote, contact us at sales@quakelogic.net.
