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Meridian 120 sitting in a hole dug in the ground.

Meridian 120 Posthole

High performance all-in-one seismograph for down-hole installations.

Exceptional performance for a variety of downhole installations

Marrying the sensor to the digitizer and recorder, this all-in-one seismographfeatures the latest generation Trillium 120PH class seismometer technology mounted on a leveling system inside a stainless steel pressure vessel. Inherent in all Trillium seismometers, the Meridian PH provides low power consumption, remote mass centering, and a robust no-mass lock design. The Meridian PH is also available for Polar environments.

Seismometer with stainless steel metal housing and red protective cap on connector

Meta data you can trust

Instrumentation configuration is made easy with an intuitive user interface. Once configured, the Meridian PH builds its own metadata. With the digitizer and sensor housed in a single unit, dataless seed volume is internally built and guaranteed to be correct every time.

Efficient array management

Simplified site visits and logistics: reduced “touch time” makes it easier to manage your resources. Combining proven technologies in a single package keeps it simple with less to forget, less to integrate.

BENEFITS

downhole-icons Direct bury

Direct bury installation provides consistent performance gains.

 
Intuitive to use Instrumentation configuration is made easy with an intuitive user interface.  
Auto Leveling Auto-levels to true vertical for highest fidelity recording.  
Quick deploy Remote mass centering, and a robust no-mass lock design.  
best-in-class-icons High data quality Seismograph provides higher data quality than vault style installations.  
Polar certified This model is available for operating temperatures down to -50°C.  

Two proven technologies combined

The Trillium 120 Seismometer and 24-bit Centaur Digitizer that make up the Meridian provide ease of deployment with no compromise on quality.

Seimometer connected to digitizer with a cable

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