| Price | On request |
|---|---|
| Model | MS4525 Airspeed Sensor |
| Product type | Digital airspeed sensor |
| Key hardware | MS4525 |
| Input supply | Operating voltage: 4.5–5.5V |
| Interface or platform | I2C |
| Rated specification | Measurement accuracy: ±0.25% span; pressure-sensor specification |
| Dimensions | Sensor-board dimensions: 25 × 16 × 13mm |
| Weight | Sensor-board mass: 3g, excluding pitot tube and connecting leads |
The SIYI MS4525 is a digital airspeed-sensing accessory intended for fixed-wing and VTOL UAV platforms. It combines a small pressure-sensor module with a pitot arrangement selected for the aircraft. Its catalog interface is I2C and its operating supply is 4.5–5.5V. Use those electrical details to narrow the choice before comparing the physical probe and cable package.
An airspeed sensor addresses a different measurement from GNSS ground speed. It can provide useful information about the aircraft's movement through the surrounding air, while a navigation receiver reports movement relative to the ground. The two sources should not be treated as interchangeable accessories on a fixed-wing aircraft.
The supplied catalog identifies an MS4525 sensor, a 1psi pressure specification and ±0.25% span measurement accuracy. The accuracy figure belongs to the pressure measurement. It is not a blanket percentage accuracy for the displayed airspeed of a complete aircraft installation.
The pressure source, pitot assembly and the way the flight-control system interprets the sensor all belong to the complete sensing arrangement. For purchasing, it is more useful to identify the exact autopilot and supported sensor interface than to select the module by its pressure range alone.
| Item | Question for the quotation |
|---|---|
| Sensor module | Is the exact MS4525 board supplied with the connection needed by the autopilot? |
| Pitot tube and pressure tubing | Which probe and tube lengths belong to the selected aircraft arrangement? |
| Electrical lead and mounting parts | Are the connector, cable length and any mounting accessories included? |
This is especially relevant for replacing part of an existing system. A buyer who already has a suitable pitot assembly may need a different order from a builder purchasing the complete sensing package for the first time.
Specify the autopilot model, firmware family, available I2C connection and intended supply. The catalog lists an operating-temperature range of −25 to 75°C, but a temperature figure alone does not establish weather protection for an exposed probe or an unenclosed circuit board. Ask how the supplied components will fit the intended aircraft enclosure.
For an enquiry, send the aircraft type, existing probe and board photographs if applicable, required cable length and whether a full sensor-and-pitot package is wanted. Keep any GPS, power module or flight controller separate on the equipment list so that the quotation is easy to compare.
No. It is the board mass, excluding the pitot tube and connection leads. Obtain the complete package mass if the aircraft has a tight weight allowance.
No. Airspeed sensing and satellite navigation provide different information. Choose each component for its role in the flight-control system.
The receiving hardware, connector and supported sensor implementation still need to match. Name the actual flight controller when requesting the package.
| Sensor | MS4525 |
|---|---|
| Communication interface | I2C |
| Operating voltage | 4.5–5.5V |
| Catalog pressure specification | 1psi |
| Measurement accuracy | ±0.25% span; pressure-sensor specification |
| Operating temperature | −25 to 75°C |
| Sensor-board dimensions | 25 × 16 × 13mm |
| Sensor-board mass | 3g, excluding pitot tube and connecting leads |
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Manufacturer Address:Quanzhou Valley Nanan Science and Technology Innovation Center, No. 89 Shijing Avenue, Shijing Town, Nanan City, Fujian Province
