Sigma 4+
The Sigma 4+ is a robust and versatile nodal seismograph designed for autonomous recording, monitoring, and active-source seismic acquisition. It builds on the Sigma 4 platform with a streamlined case design, reduced weight, optional internal co-processing, and flexible sensor and communication options. Sigma 4+ supports continuous recording as standard, making it useful for monitoring and autonomous seismic operation.
Internal or external GPS provides clock discipline and location information, while cable, Wi-Fi, cellular Ethernet, and optional mesh radio support provide flexible field communication and data offload options. The system can acquire active data from vibroseis, dynamite, and impulsive sources, while also supporting passive applications such as hydraulic fracturing monitoring, surface wave acquisition, long-term permanent monitoring, and earthquake monitoring.
- New streamlined case design
- Less weight than the original Sigma 4
- Same excellent performance as Sigma 4
- Optional internal co-processing RABbit board
- Rugged field-ready nodal seismograph platform
- Continuous recording standard for monitoring and autonomous operation
- Internal or external GPS for clock discipline and location information
- Trigger connector for hammer switch or voltage level change
- Maximum trace length supports continuous recording
- Rugged IP67 case
- Optional mesh radio network for deployment, command, and control of nodes
- Cable, Wi-Fi, or cellular Ethernet for field data offload while recording
- Rugged 10-pin MS-style 100Base-Tx Ethernet connection
- Ruggedized 19-pin external USB connection
Every rental ships with the cables, batteries, chargers, and documentation needed to survey on arrival, packed in a transit case. Tell us about your job and we will confirm the exact configuration for your dates.
Datasheets, quick-start guides, and field videos for the Sigma 4+ are available on request while we build out the library. Ask for the documentation pack.
Build your rental
Pick your dates and we will confirm availability, final rates, and a proposal, usually the same business day.
Choose your dates
Rental days run door to door and include weekends. From 28 days the monthly rate applies automatically.
Shipping
Rentals travel on your own carrier account in both directions, so freight is billed to you directly and never marked up by us.
