Speed/Temperature Sensors
Precision marine sensors that measure water speed and temperature, delivering real-time data directly to NMEA 0183 and NMEA 2000® networks for navigation and vessel systems.
Key Features:
✔️ Accurate water speed measurement using paddlewheel or ultrasonic technology
✔️ Reliable water temperature readings for navigation and engine management
✔️ Direct NMEA 0183 and NMEA 2000® output for seamless integration
✔️ Multiple mounting options: transom, thru-hull, and retractable designs
✔️ Durable marine-grade housings in plastic, bronze, or stainless steel
✔️ Retractable sensors with self-closing valves for easy maintenance
✔️ Interference-free operation alongside standard fishfinder and sonar frequencies
✔️ Available variants to suit small boats, high-speed vessels, or professional applications
Speed/Temperature Sensors
Speed/Temperature Sensors utilize paddlewheel mechanisms with embedded magnets generating pulse frequencies proportional to rotation speed, or ultrasonic transducers calculating particle transit time between dual ceramic elements. Paddlewheel models measure from 0.3 to 45 knots with data update rates at 4 pulses per knot, while ultrasonic variants operate from 0.1 to 50 knots with 10 readings per second. Temperature measurement spans 0°C to 50°C with ±0.5°C accuracy through fast-response thermistor probes positioned at housing tips.
Retractable designs feature self-closing valves preventing water ingress during paddlewheel maintenance or fouling removal operations. Thru-hull installations require 51mm diameter holes with low-profile housings extending only 5mm beyond hull surfaces to minimize hydrodynamic resistance at planning speeds. Transom-mount configurations attach via adjustable brackets suitable for vessels under 8 meters. NMEA 0183 output delivers VHW sentence format at 4800 baud rate, while NMEA 2000 versions draw 50mA from backbone power supplies through standard T-connector installations. Ultrasonic models eliminate mechanical wear through solid-state operation with no moving components requiring periodic replacement.
Naval patrol craft deploy Speed/Temperature Sensors for accurate fuel consumption calculations during extended missions where speed-through-water data determines propulsion efficiency. Coast guard vessels utilize temperature readings to identify thermal boundaries indicating current patterns during search operations. Military hydrographic survey teams require precise velocity measurements for multibeam sonar motion compensation algorithms.
Tactical Supply Pakistan supplies complete sensor configurations with installation hardware, valve assemblies, and technical support matching housing materials and output protocols to specific hull construction requirements for maritime defense and commercial operators.
How does ultrasonic speed measurement differ from paddlewheel technology in operational reliability?
Ultrasonic sensors eliminate mechanical components subject to marine growth fouling and wear, providing maintenance-free operation with consistent accuracy across entire speed ranges, whereas paddlewheels require periodic cleaning and blade replacement.
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