Property | Description/Value |
---|---|
Observation range |
WMT701: 0 … 40 m/s (89 mph) WMT702: 0 … 65 m/s (145 mph) WMT703: 0 … 75 m/s (168 mph) WMT704: 0 … 90 m/s (201 mph) |
Starting threshold | 0.01 m/s (0.0223 mph) |
Resolution | 0.01 m/s (0.0223 mph) |
Response time | 250 ms |
Accuracy |
0 … 75 m/s (168 mph): ±0.1 m/s (0.2 mph) or 2 % of reading, whichever is greater 75 … 90 m/s (201 mph): ±5 % of reading |
Available variables | Instant, peak, average, maximum, minimum, gust, lull |
Property | Description/Value |
---|---|
Observation range | 0 … 360° |
Starting threshold | 0.1 m/s (0.2 mph) |
Resolution | 0.01° |
Response time | 250 ms |
Accuracy | ±2° |
Available variables | Instant, average, maximum, minimum |
CAUTION Any temporary object (such as snow, ice, or a bird) that blocks the observation path between the ultrasonic transducer heads may lead to inaccurate or incorrect measurements. |
In extreme weather conditions, ice or snow accumulation may cause a temporary wind observation blackout even when heating is enabled. |
Property | Description/Value |
---|---|
Operating temperature |
−10 … +60 °C (+14 … +140 °F) −40 … +60 °C (−40 … +140 °F) −55 …+70 °C (−67 …+158 °F) |
Storage temperature |
−60 … +80 °C (−76 … +176 °F) |
Operating humidity |
0 … 100 %RH |
IP rating |
IP66 and IP67 |
Property | Description/Value |
---|---|
Operating voltage |
9 … 36 V DC (absolute max. 40 V DC) 1 |
Heating voltage | 24 … 36 V DC (absolute max. 40 V DC) 1 |
Heating power supply requirement 2 | |
Heated transducers |
Average 32 W Peak 40 W |
Heated transducers and arms |
Average 152 W Peak 200 W |
Heated transducers, arms, and body |
Average 252 W Peak 350 W at 24 V DC |
Property | Description/Value |
---|---|
Readout update interval | 4 Hz (default) and 8 Hz (optional) |
Units available | m/s, knots, mph, km/h, V, mA, Hz |
Operating mode | Automatic message or poll mode |
Sonic temperature | Celsius degrees |
Property | Description/Value |
---|---|
Communication interfaces |
COM1: RS‑485 COM2: RS‑485, RS‑422, RS‑232, SDI‑12 |
Communication profiles |
WMT700, WS425 ASCII, NMEA Standard and Extended (version 0183), SDI-12 (version 1.3), WS425 ASOS, ROSA MES 12, customized |
Bit rate |
300, 1200, 2400, 4800, 9600, 19200, 38400, 57600, or 115200 |
Available averages | Max. 3600 s |
Property | Description/Value |
---|---|
Wind speed | |
Frequency push-pull | Pulse 0 V/10 V: 0 … 2 kHz (f = 10 Hz/m/s) (load > 10 kΩ) |
Frequency pull-down |
Pulse 0.5 V/Vin−2 V (11 V minimum) 0 … 750 Hz (load 50 kΩ ±20 %) |
Frequency pull-up |
Pulse 1.5 V/Vin−4 V (8 V minimum) |
Voltage | 0 … 10 V (U = 100 mV / m/s) |
Current | 0 … 20 mA (I = 0.2 mA / m/s) |
Wind direction | |
Voltage | 0 … 10 V (U = 20 mV/°) |
Current | 0 … 20 mA (I = 50 uA/°) |
Potentiometer | Reference voltage 1 … 10 V DC, 0 … Vref represents 0 … 359° |
Property | Description/Value |
---|---|
Dimensions (H × W × Ø 3) | 348 × 250 × 285 mm (13.70 × 9.84 × 11.22 in) |
Weight | 1.8 kg (4.0 lb) |
Weight | |
WMT700 wind sensor | 1.8 kg (4.0 lb) |
Mounting adapter | 0.3 kg (0.7 lb) |
WMT70FIX mounting kit | 1.4 kg (2.2 lb) |
Materials | |
Body and arms, mounting kit | Stainless steel AISI 316 |
Transducers | Silicone |
Connector housing surface | Nickel-plated brass |
Property | Description/Value |
---|---|
EU directives and regulations |
EMC Directive (2014/30/EU) RoHS Directive (2011/65/EU) amended by 2015/863 REACH Regulation (EC 1907/2006) |
EMC immunity |
IEC 61326‑1:2013, IEC 60945 |
EMC emissions |
CISPR 32 / EN 55032, Class B |
Environmental |
IEC 60068‑2‑1, 2, 6/34, 30, 31, 67, 78, IEC 60529 VDA 621‑415 |
Maritime | IEC 60945:2002 + IEC 60945/Cor1:2008, DNVGL‑CG‑0339 |
Electrical safety |
UL 61010‑1 CAN/CSA C22.2 No. 61010‑1‑12 |
Compliance marks |
CE, China RoHS, RCM, UKCA |
Listing marks | SGS (USA and Canada) |
Test | Setup according to |
---|---|
Wind | ISO16622; MEASNET |
Wind driven rain | MIL-STD 810G Method 506.5 |
Salt fog | IEC 60068-2-52, VDA 621 - 415 |
Leak test (ingression protection) | IEC 60529 class IP67 |
Vibration | IEC 60068-2-6 |
Shock | MIL-STD-202G, Method 213B, cond. J |
Dry heat | IEC 60068-2-2 |
Damp heat cyclic | IEC 60068-2-30 |
Damp heat | IEC 60068-2-78 |
Low temperature | IEC 60068-2-1 |
Free fall (rough handling) | IEC 60068-2-31 |
Change of temperature | IEC 60068-2-14 |
Wind tunnel tests have been performed according to Sonic anemometers/thermometers - Acceptance test methods for mean wind measurements ISO 16622:2002 and Measnet Anemometer Calibration Procedure Version 2, October 2009.
Vaisala WINDCAP® Ultrasonic Wind Sensor Series WMT700 is safety listed for United States and Canadian markets by SGS. SGS is Nationally Recognized Test Laboratory (NRTL) officially recognized by the American Occupational Safety and Health Administration (OSHA).