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MIDAS ECM Self Recording Electromagnetic Current Meter

Product code : 1489650200

The MIDAS ECM is a highly versatile point current meter, designed with durability and ease of deployment in mind. Valeport’s latest electronics architecture allows multiple additional sensors, and a variety of communications options, making it one of the few multiparameter current meters that allows real time operations over several thousand metres of cable, as well autonomous deployments. A choice of titanium or acetal housing gives depth rating up to 5000m.

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    Data Acquisition 

    Continuous: Regular output from all sensors at 1, 2, 4 or 8Hz. 

    Burst: Regular sampling pattern, where instrument takes a 
    number of readings, then sleeps for a defined time. 

    Trip/Profile: Data is output as a chosen parameter changes by a set 
    value, usually Pressure for profiling. 

    Conditional: Instrument sleeps until a selected parameter reaches a 
    set value. 

    Delay: Instrument sleeps until predefined start time 

    The instrument will operate autonomously, with setup and data extraction 
    performed by direct communications with PC before and after deployment. 
    It also operates in real time, with a choice of communication protocols for a 
    variety of cable lengths, all fitted as standard and selected by pin choice on 
    the output connector: 


    RS232 Up to 200m cable, direct to serial port via USB adaptor 
    RS485 Up to 1000m cable, addressable half duplex comms 

    FSK 2 wire power & comms up to 6000m cable (cable 
    Baud Rate: 2400 - 115200 (FSK fixed at 19200, USB 460800) 
    Protocol: 8 data bits, 1 stop bit, No parity, No flow control 

    The MIDAS ECM is fitted with 16Mb solid state non-volatile FLASH memory. 
    Total capacity depends on sampling mode; continuous & burst modes have 
    a single time stamp at the start of the file, trip mode (profiling) stores a time 
    stamp with each reading. A single line of current data uses 10bytes, with 
    each additional parameter taking 2bytes and a time stamp uses 7 bytes. 
    The examples are for an instrument measuring speed, direction and CTD. 
    Continuous: >520,000 data points 
    Profile: >360,000 data points (>15 profiles to 5000m). 

    Internal: 8 x D cells, 1.5v alkaline or 3.6v lithium 
    External: 9 - 30vDC 
    Power: 1.7W (sampling), <1mW (sleeping) 
    Battery Life: >100 hours operation (alkaline) 
     >250 hours operation (lithium) 
    Connector: Subconn MCBH10F 


    Materials: Titanium housing, polyurethane sensor 
    components, stainless steel (316) cage 
    Depth Rating: 5000m (titanium), 500m (acetal) 
    Instrument Size: 88mmØ x 665mm long 

    Cage Size: 750 x 140 x 120mm 
    Weight (in cage): 20kg (titanium), 12kg (acetal) 
    Phipping: 130 x 37 x 32cm, 38kg (titanium), 34Kg (acetal) 

    System is supplied with DataLog Express Windows based PC software, 
    for instrument setup, data extraction and display. DataLog Express is 
    licence free. 

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