Garmin
Garmin NMEA2000 Thru-Hull Speed and Temperature Smart Sensor
Pickup available at Mercury Yacht Harbour
Usually ready in 2-4 days
Description
The Garmin Airmar ST850 is a low-profile plastic thru-hull smart sensor that delivers speed through water and water temperature straight to your NMEA 2000 network. A paddlewheel measures vessel speed while the fast-response temperature sensor reports water temperature, both processed inside the sensor for display on a compatible chartplotter or instrument.
It reads speed from 2 to 45 knots with smooth, linear output and a temperature accuracy of +/- 0.5 C. The low-profile housing is nearly flush, extending just 5 mm (3/16 in) outside the hull to minimise drag, and an integrated self-closing valve minimises water flow into the bilge when the insert is removed to clean the paddlewheel. It fits hull deadrise up to 22 degrees and is supplied with a 6 m (20 ft) NMEA 2000 cable.
PRODUCT DETAILS
- Thru-hull paddlewheel sensor delivering speed through water and water temperature to your NMEA 2000 network
- Speed range from 2 to 45 knots with smooth, linear output
- Fast-response temperature sensor accurate to +/- 0.5 C
- Low-profile plastic housing extends just 5 mm (3/16 in) outside the hull to minimise drag
- Self-closing valve minimises water ingress when the insert is removed for cleaning
- Fits hull deadrise up to 22 degrees
- NMEA 2000 Load Equivalency Number (LEN) of 2
- ST850 plastic thru-hull speed and temperature sensor
- Thru-hull housing with self-closing valve
- 6 m (20 ft) NMEA 2000 cable
- Installation instructions
No exploded diagram available for this product.
No compatible transducers listed for this product.
No spares or accessories listed for this product.
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Sensor
| Measured data | Speed through water and water temperature |
| Speed range | 2 knots to 45 knots |
| Pulse rate | 17,000 pulses per nautical mile (4.8 Hz per knot) |
| Data update rate | 1 per second |
| Temperature sensor range | -10 C to 40 C (14 F to 104 F) |
| Temperature sensor accuracy | +/- 0.5 C (+/- 1.8 F) |
Connectivity
| Interface | NMEA 2000 |
| NMEA 2000 LEN | 2 |
| Cable length | 6 m (20 ft) NMEA 2000 cable |
Mounting
| Mounting type | Plastic thru-hull with self-closing valve |
| Hull deadrise | Up to 22 degrees |
Physical
| Housing material | Plastic |
| Profile | Low-profile; extends only 5 mm (3/16 in) outside the hull |
| Housing diameter | 75 mm (2.94 in) |
| Housing length | 89 mm (3.49 in) |
| Weight | 0.7 kg (1.4 lb) |
Electrical
| Supply voltage | 9 VDC to 16 VDC |
| Supply current | Less than 200 mA |
| Pressure rating | 3 m (10 ft) |
General
| Standards | CE; complies to IEC 60945 |
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