Airmar B150M – brązowa sonda zanurzeniowa 300W (95-155kHz) z elementem nachylonym (0°) + temperatura – (8 pinów)

This CHIRP Airmar B150M transducer operates on a mid-frequency band, ranging from 95 kHz to 155 kHz.

No, this transducer with a bronze housing is recommended for fiberglass or wooden hulls. It must never be installed on a metal hull due to the risk of electrolytic corrosion.

This Airmar B150M transducer features a 0° tilted element. This means it is designed for hulls with a deadrise angle between 0° and 7° at the mounting location.

Yes, this Airmar B150M transducer is equipped with a fast-response water temperature sensor.

This transducer has an 8-pin connector, compatible with the appropriate Garmin devices.

For installing this transducer, a 51 mm (2 inch) diameter hole must be drilled from the outside of the hull. For foam-core fiberglass hulls, a 60 mm (2-3/8 inch) hole is required from the inside of the hull.

CHIRP tilted-element transducers offer several advantages:

The ceramic elements are tilted inside the housing to compensate for the hull’s deadrise angle, ensuring the beam is directed downward. They maximize echo returns and eliminate the need for fairings. Their low-profile design protrudes only 6 mm below the hull, making them ideal for towed or lifted boats. They provide superior resolution, precise fish detection, and better bottom-finding capability at high speeds.

The housing and nut of this depth sounder are made of bronze alloy. The cap is made of impact- and chemical-resistant plastic.

The ideal mounting location must meet the following criteria:

Water under the hull must be smooth, with minimal bubbles and turbulence.The transducer must remain continuously submerged.The transducer beam must not be obstructed by the keel or propeller shaft.Choose a location away from interference sources (propeller, other machinery, other sounders, cables).For CHIRP sounders, mount it in a cool, well-ventilated area away from the engine to prevent overheating.

Yes, it can be installed on a fiberglass sandwich hull. However, additional steps are required to seal the hull core to prevent water ingress, using fiberglass and resin, or a cylinder, wax, tape, and casting epoxy resin.

The beam width (-3 dB) of this transducer varies with frequency:

Approximately 26° at 100 kHz. Approximately 20° at 130 kHz. Approximately 17° at 155 kHz.

The mid-range frequency provides a good balance: it allows deeper sounding than high frequencies while offering better resolution than low frequencies. It also produces a wider beam than high frequencies, increasing coverage beneath the boat and the chances of finding fish, with clear images even at higher boat speeds.

Yes, applying a water-based antifouling paint is mandatory on the depth sounder if the boat is used in saltwater, to prevent marine growth.

No, it is imperative never to install a metal housing (such as bronze) on a vessel equipped with a positive grounding system, as this can lead to electrolytic corrosion.