Vaisala HUMICAP MMT310 Manual de servicio Pagina 79
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Vaisala Weather Transmitter WXT520
Access to Real Time Weather Data
The WXT520 has an automatic control circuit that switches the heating on
at low temperatures.
Features/Benefits
▪
Measures 6 most
essentialweather parameters
▪
Accurate and stable
▪
Low power consumption
– works also with solar panels
▪
Compact, light-weight
▪
Easy to install with one-bolt
mounting method
▪
No moving parts
▪
Heating available
▪
Vaisala Configuration Tool
for pc
▪
USB connection
▪
IP66 housing with mounting kit
▪
Applications: weather stations,
dense networks, harbors,
marinas
Measuring acoustic
precipitation
The WXT520 precipitation
measurement is based on the unique
Vaisala RAINCAP
®
Sensor, which
detects the impact of individual
rain drops. The signals exerting
from the impacts are proportional
to the volume of the drops.
Hence, the signal from each drop
can be converted directly to the
accumulated rainfall.
The WXT520 measures accumulated
rainfall, rain intensity and duration of
the rain — all in real time.
The Vaisala RAINCAP
®
Sensor is the
only maintenance-free precipitation
sensor on the market.
WXT520
The Vaisala Weather Transmitter
WXT520 measures barometric
pressure, humidity, precipitation,
temperature, and wind speed and
direction.
To measure wind speed and
direction, the WXT520 has 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 specic design. 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.
The WXT520 is immune to ooding
clogging, wetting, and evaporation
losses in the rain measurement.
Technical data
Liquid precipitation
RAINFALL
cumulative accumulation after the
latest automatic or manual reset
output resolutions and
units 0.01 mm, 0.001 inches
accuracy 5%*
RAINFALL DURATION
counting each ten-second increment
whenever water droplet is detected
output resolution and
unit 10 s
RAIN INTENSITY
one-minute running average
in ten-second steps
range 0 ... 200 mm/h (broader range with
reduced accuracy)
output resolutions and
units 0.1 mm/h, 0.01 inches/h
HAIL
cumulative amount of hits against
the collecting surface
output resolutions and
units 0.1 hits/cm2, 0.01 hits/in2, 1 hits
HAIL DURATION
counting each ten-second increment
whenever hailstone is detected
output resolution and unit 10 s
HAIL INTENSITY
one-minute running average
in ten-second steps
output resolutions and
units
0.1 hits/cm2h, 1 hits/in2h,
1 hits/h
* Due to the nature of the phenomenon, deviations caused by
spatial variations may exist in precipitation readings, especially
in a short time scale. The accuracy specification does not include
possible wind induced errors.
Wind
SPEED
range 0 ... 60 m/s
response time 250 ms
accuracy
0 ... 35 m/s ±0.3 m/s or ±3%,
whichever is greater
35 m/s ... 60 m/s ±5%
output resolutions and 0.1 m/s, 0.1km/h,
units 0.1 mph, 0.1 knots
DIRECTION
azimuth 0 ... 360°
response time 250 ms
accuracy ±3°
output resolution and unit 1°
Air temperature
Range -52 ... +60 °C (-60 ... +140 °F)
Accuracy for sensor at +20 °C ±0.3 °C (±0.5 °F)
Accuracy over temperature range (see graph below)
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 and
units
0.1 hPa, 10 Pa, 0.0001 bar,
0.1 mmHg, 0.01 inHg
Relative humidity
Range 0 ... 100 %RH
Accuracy ±3 %RH within 0 ... 90 %RH
±5 %RH within 90 ... 100 %RH
Output resolution and unit 0.1 %RH
General
Operating temperature -52 ... +60 °C (-60 ... +140 °F)
Storage temperature -60 ... +70 °C (-76 ... +158 °F)
Operating voltage 5 ... 32 VDC
Typical power consumption 3 mA at 12 VDC (with defaults)
Heating voltage 5 ... 32 VDC / 5 ... 30 VAC
RMS
)
Serial data interface SDI-12, RS-232, RS-485, RS-422,
USB connection,
Weigth 650 g (1.43 lb)
Housing IP65
Housing with mounting kit IP66
Output resolutions and units 0.1 °C, 0.1 °F
Ref. B210417EN-F ©Vaisala 2010
This material is subject to copyright protection, with all
copyrights retained by Vaisala and its individual partners. All
rights reserved. Any logos and/or product names are trademarks
of Vaisala or its individual partners. The reproduction, transfer,
distribution or storage of information contained in this brochure
in any form without the prior written consent of Vaisala is strictly
prohibited. All specifications — technical included — are subject
to change without notice.
Electromagnetic compatibility
Complies with EMC standard
EN61326-1; Industrial
Environment IEC standards
IEC 60945/61000-4-2 ... 61000-4-6
For more information, visit
www.vaisala.com or contact
us at sales@vaisala.com
Δ
&
&
Wind
- HUMIDITY / DEW POINT / 1
- Vaisala – at your service 3
- Building Automation 5
- Cleanrooms and Chambers 5
- Humidity 7
- 37.5 (1.48) 9
- 78.5 (3.09) 9
- 98.5 (3.88) 9
- Ø 12 (0.47) 9
- 120 (4.72) 10
- 170 (6.69) 10
- 41 (1.61) 10
- Duct installation kit 11
- Temperature Transmitters 12
- Transmitter 15
- Indoor Applications 17
- Chambers 22
- Vaisala INTERCAP 23
- Humidity and Temperature 23
- Probe HMP60 23
- Vaisala HUMICAP 24
- Probe HMP110 24
- HMI41 Indicator and 26
- HMP46 High Temperature Probe 26
- Performance 29
- Interchangeable Probe 29
- Available Options 29
- Technical Data 30
- HMK15 Humidity Calibrator 31
- DTR500 Solar Radiation and 33
- Precipitation Shields 33
- The Vaisala HUMICAP 36
- Transmitter Series HMW80 37
- HVAC Applications 39
- WITH OPTIONAL CURRENT MODULE 40
- **0 … 20 mA (R 40
- 1/8"-27 NPT 41
- Ensure dry 43
- OEM Applications 46
- Transmitter Series for Oil 51
- Moisture in Oil 51
- Prevent it 53
- Transmitter for Oil 54
- 0 ... 2 % 57
- Demanding OEM Applications 59
- GMM111 Carbon Dioxide Module 60
- Demand-controlled Ventilation 62
- GMM20W Carbon Dioxide Module 65
- GML20 and GML20T 66
- Process Measurements 67
- Humidity and 68
- Measurement 68
- Environments 68
- Hazardous Areas 69
- PTU300 Models 70
- Barometric Pressure 70
- Reliable and accurate 72
- HVAC solutions 72
- Take the lab to the field 74
- Standard PTB330TS 75
- PTB210 Digital Barometer 76
- Wind Measurement 81
- Vaisala Service Oering 82
- Vaisala Service Offering 82
- Your Warranty 83
- PRICE LIST 84
- DMT132 Dewpoint Transmitter 85
- Datasheet – front 85
- Vaisala Filters 89
- Vaisala Filters continued 89
- Order Guides 90
- Note: The Universal AC 91
- For high temperatures 92
- For high humidities 93
- For wall mounting 95
- For general use 96
- With Two Standard Chambers 101
- For Pressurized Processes 103
- DMT345 Dewpoint Transmitter 104
- DMT152 Dewpoint Transmitter 105
- DMT242 Dewpoint Transmitte 106
- For pressurized pipelines 108
- GMT221 and GMT222 CO 109
- Transmitters 109
- OMT355 Oxygen Transmitter 110
- 1 Transmitter type 111
- (-40...+140 °F) 112
- (-4...+140 °F) 112
- (+32...+140 °F) 112
- Order Guide 114
- Features/Benefits 115
- Technical data 116
- 3 Cable length 1.0 m 117
- PTB110 Barometer 118
- WXT520 Weather Transmitter 119
- Vaisala Contact Information 121
- ACCURATE 122
- For more information, visit 123
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