Data logger NDAS-8426N

NDAS-8426N is a seismic data logger designed to acquire and transfer high quality data in seismic networks and to store data on a local drive.

NDAS-8426N provides a 24-bit synchronized data registration via 6 channels and is well suited for connecting analog instruments by various manufacturers.

Along with analog instruments, there is an option to connect digital seismometers and accelerometers made by R-sensors. The data are stored in a file on a local drive as well as on external USB drives in miniSEED, binary and text formats.

The SeedLink protocol is used for telemetry.

The system is clocked with a high precision quartz that is being corrected with the use of external sources of GPS/GLONASS accurate time signals as well as via Ethernet over NTP and PTP protocols.

The data logger has 4 auxilliary channels as well as alarm relays to control external devices.

Additional instruments are possible to connect.

Characteristics Delivery and warranty

Availability to order
Dynamic range 132 dB at 100 sps
Supply voltage 12-48 V (7.5-60 V permissible)
Power consumption 1.2 W excluding sensors, Wi-Fi, 3G, Ethernet; 1.8 W typical average
Temperature range -20...+85°C - standard SD-card
ADC sampling rate 1, 10, 50, 100, 125, 250, 500, 1000, 2000, 4000, 8000 Hz
Dimensions 225 х 146 х 55 mm excluding connectors dimensions
ADC resolution 24 bit
Reference generator stability 0.5 ppm
Weight 1.8 kg
Case material Aluminum alloy, IP-65 waterproof
Number of channels 6
Gain coefficients 1, 2, 4, 8, 12
Data recording mode continuous, schedule
Data recording format binary, ASCII, miniSEED
Data storage
Data transfer SeedLink over Ethernet
Inbuilt sensors for device health monitoring temperature, humidity
Case connectors 7-pin type for RS-485 power and interface; 10-pin type for inputs of main ADC for calibration and sensors power (2 pcs); inputs of auxilliary ADC and outputs of signal relay (1 pc); micro USB-B for data reading and configuration; RJ-45 type for Ethernet; USB-A for connecting external drives and CME-ND digital sensors; SMA-F type for GPS / Wi-Fi / 3G / 4G / LTE antennas
Delivery set 1.5 m USB type A/B standard cable, 3 m active GPS antenna, Wi-Fi SMA antenna, microSD 32 GB (installed), User manual
GNSS timing accuracy < 10 µs
Auxiliary ADC
Additional network options Power over Ethernet, up to 24 ADC channels, low power version, RS-485 wired interface to connect external sensors