DAM Monitoring: MR3000DMS

Water is one of the resources essential to life. Therefore, dams ensure an ecosystem that must work efficiently and safely, no exception allowed.

SYSCOM MR3000DMS seismic monitoring system is the most compact, integrated and reliable system for dams, ensuring highest level of safety and sustainability. Automatic earthquake detection and structural monitoring will ensure the full integrity of the dam over its lifetime.

MR3000DMS 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.

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

Major Features

  • IP66 compact unit containing tri-axial MEMS sensor, digital recorder, battery and communications
  • Up to 32 MR3000DMS in an Ethernet master-slave configuration network with common triggering and alarming
  • Internal terminals as junction box, AC/DC & Over Voltage Protection (OVP)
  • Three configurable output relays for dam control monitoring system integration
  • Fiber optics (FO) for long distances and highly reliable data stream
  • No need of periodic calibration
  • Removable memory SD Card
  • Embedded Web Server for the configuration
  • Event recording principle with multiple level triggers
  • DDNS, OpenVPN, FTP push network capabilities
  • Automatic sending of E-mail in case of event

Technical specifications

Data acquisition

  • General
  • Principle 4th order delta-sigma ADC per channel
  • Resolution 24 bits
  • Sampling-rate 50, 100, 200, 400, 500, 800, 1000, 2000sps
  • Number of channels 3
  • Channel to channel skew None, simultaneous sampling on all channels
  • Dynamic range 130 dB @ 250 sps, 127 dB @ 500 sps
  • Data Filter Anti-aliasing filters
  • Trigger Filter Digital IIR filter: 0.5 – 15 Hz band-pass (Strong Motion Applications)

Data acquisition

  • General
  • Principle 4th order delta-sigma ADC per channel
  • Resolution 24 bits
  • Sampling-rate 50, 100, 200, 400, 500, 800, 1000, 2000sps
  • Number of channels 3
  • Channel to channel skew None, simultaneous sampling on all channels
  • Dynamic range 130 dB @ 250 sps, 127 dB @ 500 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 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

Microprocessor

  • 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 1-30 s (in 1 second steps)
  • Post-event recording 1-100 s (in 1 second steps)
  • 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 FTP client to push data to an FTP-server
  • Alarm triggers
  • Principle Two alarm levels independently settable as threshold levels or user-defined curves, with various notification options (individually settable for each axis)
  • Alarm level range 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 Configurable with AND/OR logic, for every device within the same network common alarm
  • in LAN network Typically 1 ms with NTP protocol
  • number of MR3000DMS 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 40 hours

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

Relays

  • 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) 7 μg/√ Hz
  • Frequency range DC to 600 Hz
  • Dynamic range 100 dB @ 200 sps
  • Measuring range ±4 g
  • Sensitivity 25 V/g differential
  • Scale factor error < 1 %
  • Orientation Horizontal or vertical mounting, to be specified when ordering
  • Self test Test-pulse, configurable

Housing

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

Environmental

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

Regulations

  • EMC IEC 61326-1
  • Electrical safety IEC 61010
  • Origin Swiss Made
Case Study

Evinos & Mornos Dams Strong motion monitoring

For projects associated with other types of structures:
SHORT-TERM MONITORING

Monitoring
CONSTRUCTION SITE
Assessment of
STRUCTURAL HEALTH
Monitoring
BLASTING
Find out more