PRECISION ULTRASONIC WIND SENSOR
WindObserver 70
Aviation and marine approved wind measurement.
WindObserver 70 is the WindObserver carrying FAA and CAA acceptance alongside Lloyd’s Register Type Approval, which makes it the aviation option in the range. It measures 0 to 70 m/s and is available with a 2 m cable or a connector.
150 W head heating
Anti-icing for cold sites
Up to 70 m/s
Speed accuracy ±2% at 12 m/s
FAA and CAA accepted
For AWOS surface wind reporting
Lloyd’s Register approved
Marine type approval
WHERE IT SITS
WindObserver 70 in the WindObserver range
The WindObserver 70 is the appropriate choice where the specification below matches the application. Within the WindObserver family the models differ by measurement range, output rate, build and approvals rather than by measurement principle.
MEASUREMENT
What the WindObserver 70 measures
The WindObserver 70 is a precision 2-axis ultrasonic anemometer.
SPECIFICATION
Full specification
Figures from the WindObserver 70 datasheet, issue 7. Confirm the current issue before ordering.
Measurement
| Wind speed | 0 to 70 m/s (156 mph) |
|---|---|
| Direction range | 0 to 360°, no dead band |
| Accuracy | Wind speed ±2% at 12 m/s, direction ±2° at 12 m/s |
| Resolution | 0.01 m/s and 1° |
| Options | Calibration traceable to national standards |
Outputs and power
| Output rate | 1 to 4 Hz |
|---|---|
| Outputs | RS422 and RS485, full or half duplex. Modbus output variant available |
| Interface | RS422 or RS485, full or half duplex, baud 1200 to 38400 |
| Supply voltage | Anemometer 9 to 30 V DC |
| Power consumption | Anemometer 60 mA maximum, 50 mA average. Heating up to 7 A at 24 V AC or DC, 150 W in the head |
Environment
| Ingress protection | IP66 (NEMA 4X) |
|---|---|
| Heating | Anti-icing, up to 7 A at 24 V AC or DC, 150 W in the head at 1 W/cm2 |
Mechanical
| Materials | Stainless steel 316 |
|---|---|
| Weight | 1.7 kg with 2 m cable, 1.3 kg with connector |
Approvals and documentation
| Certifications | FAA, CAA and Lloyd’s Register Type Approved. EMC EN 61326-1:2013 and EN 60945:2002. Icing tested to MIL-STD-810F |
|---|---|
| Datasheet | 1390-0033 Iss 7 |
COMPARE
WindObserver 70 against WindObserver 75: only what differs
| WindObserver 70 | WindObserver 75 | |
|---|---|---|
| Wind speed | 0 to 70 m/s (156 mph) | 0 to 75 m/s (168 mph) |
| Approvals | FAA, CAA, Lloyd’s Register Type Approved | Lloyd’s Register Type Approved |
| Datasheet | 1390-0033 Iss 7 | 1390-0034 Iss 10 |
Show the 2 rows that are the same
| WindObserver 70 | WindObserver 75 | |
|---|---|---|
| Output rate | 1 to 4 Hz | 1 to 4 Hz |
| Weight | 1.7 kg with 2 m cable, 1.3 kg with connector | 1.7 kg with 2 m cable, 1.3 kg with connector |
The nearest sibling in the range. Confirm which specification the application actually needs before ordering either. Compare the whole range
ACCESSORIES
Accessories for the WindObserver 70
The parts that fit the WindObserver 70: cable, mounting, set-up kit and spares.
Chosen at order. The base connector, cable gland and base mount are part of the WindObserver order code. The parts below are for installation, set-up and spares.
Cables
- Cable, 9 pair, cut to length
Connectors
- Connector kit
Mounting
- Bracket for pole or wall mounting
- Base mount, short
- Base mount, long
- Base mount pipe adaptor
Set-up and configuration
- USB to RS422, RS485 and RS232 adaptor
Spares
- Bird deterrent kit
- Integrity check chamber
Order accessories with your sensor or on their own. Quote the part number when you get in touch.
BEFORE YOU SPECIFY
Is the WindObserver 70 the correct configuration?
Before specifying, confirm:
- the wind speed range the site actually sees
- the output rate the receiving system needs
- the operating temperature and whether heating is required
- any approval or certification the installation demands
- the mounting arrangement and cable or connector choice
- the interface and output the receiving system expects
If those match, the WindObserver 70 provides that configuration.
QUESTIONS
Specification questions about the WindObserver 70
What wind speed range does the WindObserver 70 cover?
The WindObserver 70 measures 0 to 70 m/s (156 mph).
What is the difference between the WindObserver 70 and the WindObserver 75?
The WindObserver 70 measures up to 70 m/s (156 mph) and adds FAA and CAA approvals for aviation to Lloyd’s Register Type Approval. The WindObserver 75 measures up to 75 m/s (168 mph) and is Lloyd’s Register Type Approved.
How accurate is the WindObserver 70?
The WindObserver 70 is specified at wind speed ±2% at 12 m/s, direction ±2° at 12 m/s.
What resolution does the WindObserver 70 report?
The WindObserver 70 reports to 0.01 m/s and 1°.
What output rate does the WindObserver 70 provide?
The WindObserver 70 outputs at 1 to 4 Hz.
What outputs does the WindObserver 70 provide?
The WindObserver 70 provides RS422 and RS485, full or half duplex. A Modbus RTU variant is available on WindObserver 65 and 75, not on the 70.
What power supply does the WindObserver 70 need?
The WindObserver 70 requires anemometer 9 to 30 V DC.
What ingress protection does the WindObserver 70 have?
The WindObserver 70 is sealed to IP66 (NEMA 4X).
Have an application to discuss?
Speak to our team
Tell us what you need to measure, where and under what conditions. We’ll help you work out the appropriate approach.
Enquiring about WindObserver 70
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