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MRSK2002

Product catalog summary

Overview: The MRSK2002 is a pioneering instrument designed for seismic monitoring in nuclear applications, meeting certified safety standards. It serves as both a seismic switch and a strong motion recorder, suitable for use in nuclear power plants, fuel storage and enrichment facilities, LNG terminals, and the oil & gas sector.

Major Features: The device boasts a rugged design, high reliability, and lifetime calibration. It includes a 1 GB event memory capable of storing 500 hours of data, and is designed for integration into monitoring networks. It meets several international safety standards, including IEC 60780, IEC 61513 Class 1, and IEC 61508 SIL 2, with SIL 3 achievable through triple redundancy.

Data Acquisition: The MRSK2002 uses a linear "track and hold" A/D converter with 16-bit resolution and a sampling rate of 200 samples per second across three channels (X, Y, Z). It features a dynamic range of 96 dB and employs analog filtering with a 6-pole Butterworth low-pass filter and a 1-10 Hz band-pass filter for triggering.

Recording and Triggers: The device supports event recording with online data compression, pre-event recording from 1 to 100 seconds, and post-event recording for the same duration. It allows for unlimited event recording time, with a maximum of 30 minutes per event. Alarm triggers are level-based, with individually settable levels for each axis.

Firmware and Interface: The MRSK2002 operates in a multitasking environment, supporting simultaneous data acquisition and communication. It features an RS-232 user interface for parameter setting and file transfer, with firmware upgrades available via RS-232.

Memory and Display: The device includes a primary 2 MB SRAM and a secondary removable 1 GB SD flash card, formatted in FAT. It has a display with four LEDs indicating power supply, operation status, memory usage, and errors.

Power Supply: The MRSK2002 is powered by an internal lead-acid gel cell battery with an integrated charger, supporting a supply voltage of 10-36 V DC and offering approximately 35 hours of autonomy.

Mechanical and Environmental Specifications: The device is housed in an aluminum casing with dimensions of 230 x 200 x 110 mm and weighs 7.5 kg. It is splash-proof with an IP 65 protection rating and operates in temperatures ranging from -20°C to +70°C.

Technical Specifications of MS2002+: The MS2002+ features a MEMS capacitive accelerometer with a full-scale range of ±2 g, sensitivity of 1 mV/mg, and a frequency response of 0-100 Hz. It is designed to withstand shocks up to 6000 g and vibrations of 20 g rms.

Ordering Information: The seismic switch with sensor is available under the model number MRSK2002, with additional specifications and compliance details provided by SYSCOM Instruments SA.

Catalog excerpts

GENUINE VIBRATION MONITORING SOLUTIONS Seismic Monitoring Solutions for safety related applications in : • Nuclear Power Plants • Nuclear Fuel Storage Plants • Nuclear Fuel Enrichment Plants DATASHEET : MRSK2002The MRSK2002 is the first instrument in the market to meet the certified safety standards for Nuclear applications.

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MRSK2002 Seismic switch and strong motion recorder The MRSK2002 is the first instrument in the market to meet the certified safety standards for Nuclear applications. It combines the functionality of a seimic switch for “Class 1” trip systems with the functionality of a strong motion recorder in a monitoring network. Major features • Rugged design • Superb quality, extremely reliable • 1 GB event memory (500 hours) • Suitable for trip systems in NPPs • Designed to be used in monitoring networks *SIL 3 with triple redundancy Data Acquisition Principle Resolution Sampling-rate Number of channels...

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Power Supply Battery Battery Charger Supply Voltage Power consumption Autonomy (with internal battery) I/O and Connectors Type Sensor Safety RS 232 (Internal) User Serial Interface Power Safety Alarm Relay Error Alarm Relay Internal lead-acid gel cell 8.5 Ah Integrated DC 10-36 V Approx. 200 mA @ 12 V Approx. 35 hours Metallic self-latching push-pull connectors with positioning key (LEMO) Bipolar input 0±2V (MS2002+) Communication PC Fiber optic with NCC Network Control Center or PC, Metallic connector - internal line filter 2 low voltage relays (Seismic Switch) - rating 2 A @ 30 V DC, NC or...

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Technical Specifications MS2002+ Performance principle Full Scale Range Hysteresis Sensitivity Non linearity Frequency Response Temperature Coefficient Resolution Noise Dynamic Range (RMS) MEMS capacitive accelerometer with electronical signal conditioning ±2g none 1mV/mg < 0.8% of FS 0 - 100 Hz typ. < 0.1 mg/°C < 0.1 mg typ. 18 µV / √Hz, max. 24 µV / √Hz > 84 dB (DC to 50 Hz) Mechanical specifications MS2002+ Shock Survival Vibrations Cross Axis Sensitivity Operating Temperature Power Supply Power Consumption Physical Characteristics Housing Aluminum, 80 x 75 x 57 mm (W x L x H) Connector Metallic...

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