Trilium 120 Posthole Seismometer
Nanometrics’ industry-leading portfolio of Trillium seismometers includes a posthole variant that is revolutionizing the way seismologists deploy instruments and collect seismic data
Trilium 120 Posthole Seismometer
Trilium 120 Posthole SeismometerCategories: Seismometer
Nanometrics’ industry-leading portfolio of Trillium seismometers includes a posthole variant that is revolutionizing the way seismologists deploy instruments and collect seismic data. The instrument is housed in a stainless steel enclosure incorporating a high-pressure, marine-grade connector making it suitable for uncased buried/posthole installations. An advanced leveling system allows the instrument to self-correct over a tilt range of ±5 degrees (±10 degrees optional).
The Trillium PH is ideal for local, regional and teleseismic studies having a response flat to velocity from 120 seconds to 150 Hz and self-noise below the NLNM at 100 seconds. Operators will appreciate the low power consumption, automatic mass centering and robust no-mass lock design inherent in all Trillium seismometers.
When using the Trillium 120 PH with our popular Centaur digitizer, you’ll have access to a digital leveling bubble through the Centaur GUI. The virtual leveling bubble makes for easy leveling down a dark hole, or once buried, gives you the ability to check levelness at any time.
Product Detail Description
Self-Noise: See plot below
Nominal Sensitivity: 1200 V-s/m (reference User Guide for precise value)
Precision: ±0.5% relative to User Guide specification
Bandwidth: -3 dB points at 120 s and 150 Hz
Clip Level: 16.6 mm/s up to 10 Hz and 0.12 g above 10 Hz
Dynamic Range: 168 dB @ 1 Hz
Operating Tilt Range: ±5º
Temperature: ±45°C without recentering
Magnetic Sensitivity: <0.03 (m/s²)/T (model T120-PH3-XC)
Connector: 20-pin marine
Velocity Output: 40 V peak-to-peak differential
- Selectable XYZ or UVW mode
Mass Position Output: Three independent ±4 V outputs
Calibration Input: Single voltage input with one active-high control signal for all channels
- Calibration in XYZ or UVW
- Individual channels selectable via web interface
Control Lines: Auto-Level & Mass Center, Calibration Enable, XYZ/UVW mode
Serial Port:
- RS-232 compatible serial IP (SLIP) with onboard HTTP web server to select sensor operating modes, to mass center, and to access state-of-health, virtual level bubble, firmware updates and metadata
- Plug-and-Play automated workflow interface to select sensor operating modes, and to access state-of-health, virtual level bubble and metadata
Supply Voltage: 9 to 36 Volts DC isolated input
Power Consumption: 230 mW typical quiescent
Protection:
- Reverse-voltage and over-voltage protected
- Self-resetting over-current protection
Operating Temperature:
- –20°C to 60°C (Standard Model)
- –50°C to 60°C (Polar Certified Model)
Storage Temperature:
- –40°C to +70°C (Standard Model)
- –60°C to +70°C (Polar Certified Model)
Ingress Protection: Rated to IP68 and NEMA6P to 300 m for prolonged immersion. A dry hole is recommended for the best seismic performance.
Humidity: 0% to 100% (submersible)
Shock: 20 g half sine, 5 ms without damage, 6 axes. No mass lock required for transport.
| trillium_ph_120.pdf |
