ATLAS-F

ATLAS-F is a variant of the ATLAS digitizer that was designed following a customer’s request. Compared to standard ATLAS it offers accessible/removable SD and SIM card slots, hot-swappable dual-slot batteries and the repositioning of all the connectors on one side.

The ATLAS-F is easily transportable in flights, the user can take out the batteries and transport them in the cabin. In addition, the dual battery slot is also useful when ATLAS-F is used for long-term monitoring as the batteries can be replaced one by one without turning off the instrument.

The purpose of positioning the connectors on one side is that the cables are easier to keep in order when the instrument is installed in a box and to save space.

ATLAS-F is available with 3,6 or 9 differential input channels for external sensors (optionally 4 or 8 channels).

EXCELLENT PERFORMANCE

The instrument is equipped with high-resolution delta-sigma 24bit ADCs, all the channels are synchronized and the sample rate is adjustable up to 1000 sps per channel.

The system memory (up to 1TByte) has two independent recording zones: the ring-buffer zone which is dedicated to continuous sampling, and the triggering zone which is used for event sampling.

ATLAS-F comes with built-in (not removable) memory and a hot-swappable memory on the outside. Its firmware writes both memory banks redundantly. The user can eject the external card and interchange it while the recording is running without affecting the contents of the internal memory.

The data format is MiniSEED.

The built-in GNSS receiver synchronizes the system clock with the absolute time so that a network of several units can be created where all the channels are synchronized.

EASY TO USE

The instrument can be controlled locally via network connection (LAN or WiFi), and remotely using the integrated 4G modem (optional). The SIM card is in micro format which is accessible to the user from the top panel.

Thanks to the SeedLink protocol, ATLAS-F is compatible with most popular seismic analysis software (Seiscomp3, Antelope, Earthworm).

INTEGRATED UPS

The large capacity internal back up battery guarantees long term recording in the absence of an external power supply (typically 40hrs). This feature is greatly appreciated by customers because it is like having an integrated UPS, which saves space and money; both the 4G modem and the external sensors’ power supply is backed up by the internal battery.

The power supply ranges from 9 to 28VDC and it can be connected to the electric power network using the power supply adapter included.

ATLAS-F can also be connected directly to a solar panel.

ROBUST

The anodized aluminum (INOX AISI316 option) enclosure is CNC milled, shockproof, vibration-resistant weather-resistant IP67.

Long-term or short-term monitoring

ATLAS-F can be used with an accelerometric or a velocimetric sensor.
ATLAS-F can be configured in-situ using WIFI or LAN cable.
If ATLAS-F is used for long-term monitoring, it can be reached remotely using the built-in 4G modem or using LAN connection in order to link it, for example, to an ADSL modem.


Large structures monitoring

ATLAS-F is well suited to the monitoring of large structures where information from multiple sensors is required.
In the aforementioned use case sensors are wired up to ATLAS-F and each device can be used to acquire up to 9 synchronous channels.
If more channels are needed, you can connect to another ATLAS-F device and synchronize it with the MASTER .
ATLAS-F can be reached locally via WiFi or remotely using the built-in 4G modem or LAN.


Structural monitoring

ATLAS-F is often used in the field of structural monitoring to calculate the resonant frequency of the buildings.
Lunitek has developed ad-hoc firmware based on FFT for real time evaluation of the building’s state of health.


Monitoring station

In a typical geophysical monitoring station, ATLAS-F is used with a low-noise force-balance-triaxial accelerometer and with a triaxial velocimeter, both mounted on a concrete slab.
Both sensors are digitized with high dynamics, high accuracy ADC.
ATLAS-F can be equipped with auxiliary analog inputs in order to monitor environmental data (temperature or humidity) or with digital input to monitor external events (vault open/closed) or even with output driving capability to communicate when thresholds are exceeded (alarms).

Atlas-F 3T
3 24bit channels on a single MIL connector (size 14, 19 pins) sample rate up to 1Khz​

Atlas-F 6T
6 24bit channels on two MIL connectors (size 14, 19 pins) sample rate up to 500Hz​

Atlas-F 9T
9 24bit channels on three MIL connectors (size 14, 19 pins) sample rate up to 250Hz​

DOWNLOAD DATA SHEET

KEY FEATURES

ADC resolution 24 bit
Dynamic range > 136dB@100 sps
Sampling rates 1, 20, 25, 50, 100, 200, 250, 500 , 1000 sps synchronous
Lan, Wi-fi and 4G modem
Built-in GNSS receiver​
Integrated Ups, 40hrs system autonomy
Miniseed Data Format​
Compatibility with Earthworm, Seiscomp, Geopsy, Seisgram2k