Weather Transmitter and Humidity/Temp Probe

Model 6501V-H and 6539B

  • Overview

    The 6501 weather transmitter offers a six-in-one solution to measure barometric pressure, humidity, precipitation, temperature, and wind speed and direction – all with one instrument. Compact and lightweight, the 6501 is suitable for weather stations, dense networks, buildings, golf courses, marinas, harbors and hotels – almost anywhere where real time weather data is needed. Accurate and reliable data provided to you early enough can increase safety to life and property.

    To measure wind speed and direction, the 6501 incorporates the Vaisala WINDCAP® sensor that uses ultrasound to determine horizontal wind speed and direction. The array of three equally spaced transducers on a horizontal plane is a Vaisala specific design, which ensures accurate wind measurement from any horizontal wind direction without blind angles and corrupted readings.

    Barometric pressure, temperature, and humidity measurements are combined in the PTU module using capacitive measurement for each parameter. It is easy to change the module without any contact with the sensors. Precipitation measurement is based on the Vaisala acoustic RAINCAP® sensor.

    The 6539 humidity and temperature probe is designed for reliable outdoor humidity and temperature measurements. The probe is very accurate, has excellent long-term stability and negligible hysteresis.

    The humidity and temperature probe’s small diameter allows it to be used in applications with space restrictions, for example, shipping containers or between planks in timber drying kilns. It is designed especially for demanding outdoor applications.

    The probe has the proven HUMICAP® 180R humidity sensor that has excellent stability and withstands harsh environments as well as Pt100 RTD temperature sensor. The probe structure is solid and the sensor is protected by default with a sintered Teflon filter, which gives maximum protection against liquid water, dust, and dirt.

    The 6539 probe is also a warmed probe which reduces the risk of condensation forming on the head of the probe and with that reduces chance of measurement data corruption.

    The probe can be used in conjunction with the Model 6704A Radiation Gill Screen & Mount in standalone situations

    environmental monitoring weather transmitter 6501V
    environmental monitoring Humicap humidity temperature probe 6539B

  • Specifications

    Weather Transmitter 6501V-H

    Physical specifications

    Size: Dia 115mm x 238mm tall, IP66
    Weight: 850 grams (including three batteries)
    Operating temperature: -52°C to 60°C. Not affected by humidity

    Electrical specifications
    Wind Speed

    Range: 0 … 60 m/s
    Response time: 250 ms
    Available variables: average, maximum and minimum
    Accuracy: ±3% at 10m/s
    Output resolution: 0.1 m/s, 0.1km/h, 0.1 mph, 0.1 knots

    Wind Direction

    Azimuth: 0 … 360°
    Response time: 250 ms
    Available variables: average, maximum and minimum
    Accuracy: ±3% at 10m/s
    Output resolution:

    Precipitation

    Rainfall: Cumulative accumulation after the latest automatic or manual reset
    Collection area: 60cm2
    Output resolutions: 0.01 mm (0.001 inches)
    Accuracy: 5%

    Air Temperature

    Range: -52 … +60°C (-60 … +140°F)
    Accuracy for sensor at +20°C: ±0.3°C (±0.17°F)
    Output resolutions: 0.1°C (0. 1°F)

    Barometric Pressure

    Range: 600 … 1100 hPa
    Accuracy:
    ±0.5 hPa at 0 … +30°C (+32 … +86°F)
    ±1 hPa at -52 … +60°C (-60 … +140°F)
    Output resolutions: 0.1 hPa, 10 Pa, 0.001 bar, 0.1 mmHg, 0.01 inHg

    Operating voltage: 6 … 24 VDC
    Typical current consumption: 3 mA at 12 VDC (with defaults)
    Outputs: SDI-12, RS-232, RS-485, RS-422
    Cable: 5m of 8 core cable

    Humicap® Humidity & Temperature Probe 6539B

    Physical specifications

    Size: Dia 40mm x 267mm tall, IP66
    Weight: 350 grams
    Operating temperature: -80°C to 60°C. Not affected by humidity

    Electrical specifications
    Relative Humidity

    Range: 0 … 100%RH
    Accuracy:
    ±1%RH at +15° to +25°C and 0-90%RH
    ±1.7%RH at +15° to +25°C and 90-100%RH
    ±(1+0.008 x reading)%RH for -20° to +40°C

    Temperature

    Range: -80 … +60°C (-112 … +140°F)
    Accuracy:
    ±(0.226-0.0028 x temperature)° for -80° to +20°C
    ±(0.055+0.0057 x temperature)° for +20° to +60°C

    Operating voltage: 7 … 28 VDC, minimum operating voltage 12V with 0-5V output.
    Typical current consumption: 3 mA at 12 VDC (with defaults)
    Outputs:
    1 analog 0-1VDC – Relative Humidity
    1 analog 0-1VDC – Temperature
    Cable: 3.5m of 4 core cable

  • Ordering Information

    ModelDescription
    6501V-HWeather Transmitter RS232/422/485 SDI-12 With Bird Spikes
    6501M-V-GAL-RWeather Transmitter Mount Adaptor for Round 50mm Galvanised Pipe
    6501M-V-TRIWeather Transmitter Mount Adaptor for Tripod
    6539BHumicap® humidity and temperature probe

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