Nanometrics Trillium 40 Intermediate Sensor

Salient Features:

• Long period corner is 40 seconds and sensor has a self noise level below the Low Noise model (NLNM) from 15 seconds to 5 Hz
• Low power
• Easy to use - No Mass lock/unlock; Masses are free to move at all times
• Logic active low

Manufacturer Documents:

• Nanometrics Trillium 40 from Nanometrics Trillium T40 specification sheet)
• Nanometrics Trillium Series sensor noise comparisons
• PDF File, "Trillium 40 Seismometer User Guide" (1.09MB)

Response Characteristics:

Installation Tips:

• Orienting: Base of sensor has BOTH A) Vertical scribe marks for N and S, and B) holes for 5/16" alignment rod for E and W
• Foot lock when level: The foot (or leg) 'locking' nut tightens upward against the sensor case, not downward onto the foot itself.