HANDHELD ANEMOMETER – METEOROLOGICAL STATION RVM 96C


Measurements of:

  • wind speed and direction

  • temperature

  • atmospheric pressure

  • relative humidity

  • horizontal orientation

    Higlights:

  • built-in electronic compass; accurate wind direction data without need for instrument orientation

  • illuminated LC display, capable of presenting current and historic data in numeric and graphic way

  • built-in storage of statistic data in the permanent internal memory (EEPROM) for 2048 intervals; data are not lost even when battery is empty or removed.

  • built-in calculations of mean values and extremes

  • serial data transmission to the external computer

  • scalar or vector wind processing

  • rechargable Li-ion battery.

    Handheld anemometer – meteorological station RVM 96C is truly portable, easy to use instrument for basic field meteorological measurements. It is used in all cases, where other instruments, due to their design, weight, or dimensions, are unsuitable.

    When in basic mode, RVM 96C shows on it`s graphic LCD, depending on the selection, one of the following types of measured data:

  • instant data

  • average data for the selected interval

  • minimums for the selected interval

  • maximums for the selected interval

     

    Operation parameters are selected and set through the menu-organized comands. Settings and constants are stored in EEPROM, so that they are unchanged when instrument is switched off, even when battery is removed.

    At the end of each data processing interval, mean values and extremes are stored with the time stamps in the EEPROM data storage. These data can be reviewed later on the instrument display or transmitted serially to the external computer. RVM 96C can store data for up to 1048 data processing intervals. This means, that data for 85 days are stored, provided that averaging interval is set to 1 hour. Data are stored on FIFO (first in – first out) principle.

    System for measuring wind speed is optoelectronic, with 3-cup Robinson’s cross. Direction is also measured digitally (6-bit Gray code), corrected automatically to the true wind direction by built-in electronic compass.

    RVM 96C can measure wind speed in m/s, km/h, knots, or mph, and temperature in oC or oF.

    Lid of a handle has standard 1” nut to enable the attachment of the device to the standard photographic tripod.

    A case is provided for transport and storage of RVM 96C.

    TECHNICAL DATA

    Dimensions 300mm * 220mm * 80mm
    Mass 0,6kg
    Operating temperature -30°C to +50°C
    Protection Aluminium case
    display LCD, Graphical 98x65, backlit
    Connectors 3.5 stereo RS232, 2,1x5,5 battery
    Keyboard Sealed, flat
    Power supply Built-in 3.6V li-ion battery
    Autonomy 30 h
    Power consumption 19 mA
    Battery charger Voltage and current limiter
    Data transmissiion RS232, serial, adjustable speed, 8 bits, 1 STOP bit, no parity
    Distance for serial transmission RS232: 15m max

    SENSORS:

    Air pressure

    Producer of sensor Intersema Sensoric SA
    Type MS5534
    Operating principle piezzoresistance
    Measuring range 300 – 1100 mbar
    Accuracy +/- 1 mbar
    Resolution 0.1 mbar

    Wind speed and direction

    Wind speed sensor Robinson's cross, optoelektronic strobe
    wind direction Wind vane, g-bit optoelectronic gray code encoder
    Measuring speed range 0 to 50 m/s
    Speed constant 20 imp./m
    Wind speed accuracy +/- 0.5 m/s
    Wind direction accuracy +/- 5.6 st.

    Relative humidity

    Sensor Combined temperature /RH sensor
    Producer of sensor Sensirion
    Type SHT75
    Operating principle Capacitive polymer
    Measuring range 10 – 100 % RH
    Accuracy +/- 3 % RH
    Resolution 1 % RH

    Temperature

    Sensor Combined temperature / RH sensor
    Producer of sensor Sensirion
    Type SHT75
    Measuring range -30 – +50°C
    Accuracy +/- 1°C
    Resolution 0.1°C

    Iattery charger

    Input voltage 220 do 240 V, 50 do 60 Hz AC
    Output voltage 6-13.8 V DC, nonstabilized

    Leaflet

    Manual