Airmar ST850 Thru-Hull Speed & Temperature Sensor

The ST850/800 is an analog, retractable speed and temperature sensor. The sensor fits inside a low profile thru-hull housing that is nearly flush to the hull, with only 3/16" (5 mm) extending outside of the hull. The housing has a valve assembly that helps to minimize water ingress in the bilge when the sensor is removed for routine maintenance of the paddlewheel.

Features:

• Speed and temperature
• Analog output
• Retractable insert in a low-profile housing with a water valve
• Available in a plastic or bronze housing with water valve
• Retrofits into B617V, P617V, SS617V, P217, P314or ST650 housing

Specifications:

• Connector: Model dependent
• Cable length: 30' (9 m)
• Data rate: 1 hz
• Functions: Speed/temperature
• Hole size: 2" (51 mm)
• Mounting style: Low profile thru-hull
• Protocol output: Analog
• Pulses: 17,000 p/nm (4.8 Hz per knot)
• Retractable housing: Yes
• Retrofits: B617V, P617V, SS617V, P217, P314 or ST650 housing
• Speed range: 2 to 45 knots (2 to 52 MPH)
• Temperature accuracy: ±1.8° F (±0.5° C)
• Tilted element: No
• Usable shaft length: 2.25" (57 mm)
• Voltage: 9 to 16V DC
• Water temperature: 14° to 104° F (-10° to 40° C)

Installation Instructions