The MR3003DMS is a dedicated strong-motion monitoring system for dams. Up to 32 units can be connected together to have a complete and reliable seismic monitoring system.

Product supplied by Syscom Instruments.


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Product Features

  • Compact unit containing sensor, recorder, battery and communication
  • Fiber optics communication
  • Internal AC/DC with Overvoltage protection, type I + II
  • Embedded Web server for easy configuration and control
  • Optional accurate timing (GPS)


The MR3003DMS seismic monitoring system is the most compact, integrated and reliable system for dams, ensuring the highest level of safety and sustainability. Automatic earthquake detection and structural monitoring will ensure the dam full integrity over its lifetime.

The MR3003DMS is extremely versatile and easy to install, thanks to its state of the art Ethernet master-slave connectivity and the command & control access through embedded web server.

3 relays output (alarm 1, alarm 2, device error) can be directly connected to the control room for a centralized overview and an automatic logic response in case of any seismic event.

Data acquisition

General Principle 4th order delta-sigma ADC per channel
Resolution 24 bits
Sampling-rate 250, 500, 1’000, 2’000, 4’000 sps
Number of channels 3
Channel to channel skew None, simultaneous sampling on all channels
Dynamic range Typ. 130dB@250 sps, 124dB@1000 sps
Data Filter Anti-aliasing filters
Trigger Filter Digital IIR filter: 0.5 – 15 Hz band-pass (Strong Motion Applications)

Trigger and de-trigger

Principle Level trigger or STA/LTA or automatic adjustment of trigger level
Trigger voting logic Predefined AND or OR combinations, individual channel votes
Trigger level 0.1 mg to 4 g
STA / LTA STA: 0.1 to 25s, LTA: 1 to 250s, ratio 0.1:25
Smart Trigger / De-Trigger Automatic adjustment of trigger level


Recording Principle Event recording (time history), continuous-time recording, or manually triggered
Header Contains status information at time of trigger and event summary
Pre-event recording 1-99 seconds (@250Hz), others depending on sampling rate
Post-event recording 1-100 seconds
Max. recording time Unlimited
Memory Removable SD flash card (4GB)
Timing System clock 1ppm, could be disciplined by GPS or NTP
Data / User Interface Web interface Easy to use command & control through embedded web server
Intelligent Alerting System initiates communications and sends e-mail when an event is recorded
FTP Built-in Built-in client protocol supporting FTP, SFTP, FTPS able to push to a server
Alarm triggers
Two alarm levels independently settable as threshold levels or user-defined
Alarm level range 0.1 % to 100% full scale
User-defined alarm Thresholds and frequencies individually settable for each axis
System status 3 LEDs Run, Recording, Warning/Error. Internal LCD with status info and
important settings

Network capabilities

Common trigger and common alarm Configurable with AND/OR logic, for every device within the same network
Sync. in LAN network Typically 1 ms with NTP protocol
Max. number of MR3003DMS 32, in Master/slave configuration
Remote control VPN, DDNS

Power Supply

Power supply 100 – 240 V AC, 50 – 60 Hz, OVP protected, type I and II. Optional DC power
10-36 V DC
Internal battery 12 V, 12 Ah
Consumption 4 W (with charged battery), 25 W (AC max. and battery in charge)
Battery autonomy Typ. 40 hours

I/O (glands and connectors)

Relays (3) M16 cable gland 7-11mm / Terminals
Power M16 cable gland 4-11mm / Terminals
Kit LAN On request, 3 m Ethernet cable
Kit GPS On request, connector and GPS antenna with 5 m cable for time synchronization
FO M20 cable gland 6-13 mm / ST connectors

Fiber Optics

FO type Multimode OM2 fiber with wavelength 1300 nm, 50/125 μm, Rx/Tx


Configuration 3 output configurable relays, No/Nc
Current 2 A, 30 V DC

Acceleration sensor

Principle Micro-machined capacity MEMS accelerometer
Hysteresis None
Noise (10 to 1000 Hz) Typ. 7 μg/√ Hz
Frequency range DC to 600 Hz
Dynamic range Typ. 100 dB @ 200 sps
Measuring range ±4 g
Sensitivity 1.25 V/g differential
Scale factor error < 1 %
Orientation Horizontal or vertical mounting, to be specified when ordering
Self test Test-pulse, configurable


Dimensions 330 x 230 x 110 mm
Weight 10 Kg
Protection degree IP66


Shock 30 g/11 ms half-sine
Heat -20 °C to +50°C
Humidity up to 100% RH


EMC IEC 61326-1
Electrical safety IEC 61010
Conformity CE
Origin Swiss Made

File Name

MR3003DMS datasheet

Resource Type

Language Version Download

Speak with an Expert

I’m very happy with the quality of the instrumentation and technical support from RST, as always. They worked with us from the initial stages of the project to ensure that we were fully prepared and equipped to use the RSTAR network for the first time. They delivered everything within the tight project time frame to ensure that there were no delays on site, and the submersible tilt meters looked like new even after over twelve months of being submerged in Thames water!
-Richard Lipscombe, BEng (Hons), Director & Principle Consultant - RL Geotechnical Ltd