PRECISION ULTRASONIC WIND SENSOR
WindObserver 75
Marine approved wind measurement to 75 m/s.
WindObserver 75 raises the range to 0 to 75 m/s while keeping the stainless steel open-head build and Lloyd’s Register Type Approval. It is the marine option where the site sees wind speeds beyond the 65 m/s range.
Heated, anti-icing head
Operating -55°C to +70°C
Up to 75 m/s
Open head, stainless steel 316
±1% turbine control accuracy
Within ±25° of datum
Lloyd’s Register approved
Marine type approval
WHERE IT SITS
WindObserver 75 in the WindObserver range
Within the WindObserver family the models differ by measurement range, output rate, build and approvals rather than by measurement principle.
MEASUREMENT
What the WindObserver 75 measures
The WindObserver 75 is a precision 2-axis ultrasonic anemometer.
SPECIFICATION
Full specification
Figures from the WindObserver 75 datasheet, issue 10. Confirm the current issue before ordering.
Measurement
| Wind speed | 0 to 75 m/s (168 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 | Heating 7 A at 24 V AC or DC |
Environment
| Ingress protection | IP66 (NEMA 4X) |
|---|---|
| Heating | Anti-icing, 7 A at 24 V AC or DC |
Mechanical
| Materials | Stainless steel 316 |
|---|---|
| Weight | 1.7 kg with 2 m cable, 1.3 kg with connector |
Approvals and documentation
| Certifications | Lloyd’s Register Type Approved. EMC EN 61326-1:2013 and EN 60945:2002. Icing tested to MIL-STD-810F |
|---|---|
| Datasheet | 1390-0034 Iss 10 |
COMPARE
WindObserver 75 against WindObserver 90: only what differs
| WindObserver 75 | WindObserver 90 | |
|---|---|---|
| Wind speed | 0 to 75 m/s (168 mph) | 0 to 90 m/s (201 mph) |
| Approvals | Lloyd’s Register Type Approved | Lloyd’s Register, in the approvals table |
| Datasheet | 1390-0034 Iss 10 | 1390-0042 Iss 13 |
Show the 2 rows that are the same
| WindObserver 75 | WindObserver 90 | |
|---|---|---|
| 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 75
The parts that fit the WindObserver 75: 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 75 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 75 provides that configuration.
QUESTIONS
Specification questions about the WindObserver 75
What wind speed range does the WindObserver 75 cover?
The WindObserver 75 measures 0 to 75 m/s (168 mph).
What is the difference between the WindObserver 75 and the WindObserver 90?
Wind speed range. The WindObserver 75 measures up to 75 m/s (168 mph), the WindObserver 90 up to 90 m/s (201 mph). Both carry Lloyd’s Register approval.
How accurate is the WindObserver 75?
The WindObserver 75 is specified at wind speed ±2% at 12 m/s, direction ±2° at 12 m/s.
What resolution does the WindObserver 75 report?
The WindObserver 75 reports to 0.01 m/s and 1°.
What output rate does the WindObserver 75 provide?
The WindObserver 75 outputs at 1 to 4 Hz.
What outputs does the WindObserver 75 provide?
The WindObserver 75 provides RS422 and RS485, full or half duplex. Modbus output variant available.
What power supply does the WindObserver 75 need?
The WindObserver 75 requires anemometer 9 to 30 V DC.
What ingress protection does the WindObserver 75 have?
The WindObserver 75 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 75
- Our team replies. Not an account manager, and not a queue.
- We aim to respond in one working day. Monday to Friday.
- No obligation. Plenty of these end with us saying it is not our product.