A+ A A-


high-performance heading sensor at an affordable price, great for width-constrained seismic streamers and towed arrays



We heard you. Those fluxgate heading sensors are awfully expensive, often making their widespread use unfeasible. But PNI Sensor's SeaTRAX is a magneto-inductive heading sensor compass module that meets your stringent streamer specifications.

Unlike heading sensors costing thousands more, SeaTRAX is backed by PNI's decades of heading-sensor design and manufacturing experience. This makes it a dramatically more cost-effective solution from a proven source for on-time delivery to meet your seismic-streamer and towed-array production needs.


High AccuracyLow Power Consumption
0.3° RMS  17 mA at 8Hz Sample Rate
Streamer-Specific Form FactorInterface
70 × 11.8 × 10.3 mm RS232
Multiple Field Calibration OptionsRoHs Compliant
Full Sphere, Limited Tilt, 2D Only, Hard Iron Only Yes
Advanced Field Calibration
Hard- and Soft-Iron correction and accelerometer calibration


Performance Specifications
Heading≤65° of pitch 2 <0.3° RMS
Resolution 1° RMS
Repeatability 0.05° RMS
TiltRange Roll: ±180°
Pitch: ±90°
Accuracy w/≤65° of pitch 0.2° RMS
Resolution 0.01°
Repeatability 0.05° RMS
Maximum Dip Angle 3 85°
I/O Characteristics
Communications Interface RS232
Mechanical Characteristics
Dimensions (l × w × h)With Z-Axis Sheild 70 × 11.8 × 10.3 mm
Without Z-Axis Sheild 70 × 11.8 × 9.8 mm
Weight 4.3 grams
Power Requirements
Supply Voltage 3.8 to 9.0 VDC
Current Draw @ 8 Hz Sample Rate 17 mA
Temperature Range
Operation −40 to +85 °C
Storage −40 to +85 °C


  1.  Product specifications are preliminary and subject to change
  2.  After using full-sphere calibration; see user manual for accuracy after using other calibrations
  3.  Performance at maximum dip angle will be degraded


File File Type Description
Spec Sheet SeaTrax Spec Sheet
SeaTRAX-User-Manual-r03.1.pdf User Manual SeaTrax User Manual

Ordering Info

Part Number Description
90039 SeaTrax Eval Kit, includes SeaTrax, eval cable,  studio


By Email

By Phone

Toll Free: 800.665.5600 (North America)
Direct: 604.814.5069
Fax: 888.831.5149

By Mail

Tri-M Technologies Inc.
208 – 31510 Gill Avenue
Mission, BC, Canada  V4S 0A1

Login or Register