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Unidata - Model 6501V-H and 6539B -Weather Transmitter and Humidity/Temp Probe
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
- 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: 1°
- 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