When it comes to marine electronics, Airmar is a name that has been synonymous with quality and reliability. One of their most popular products is the Airmar P79, which is a transom-mounted depth and temperature sensor. If you’re installing this device for the first time, then it’s important to have a good understanding of the wiring diagram. In this article, we’ll take a closer look at the Airmar P79 wiring diagram, and break down each wire to help you make sense of it all.
What is the Airmar P79?
The Airmar P79 is a depth and temperature transducer that is designed to attach to the transom of a boat. It uses sonar technology to measure water depth, and also provides accurate temperature readings. The device has become popular among boaters because of its reliability and accuracy.
What Are The Benefits Of Using The Airmar P79?
One of the key benefits of using the Airmar P79 is that it can provide accurate depth readings even at high speeds. This makes it an ideal choice for boaters who like to travel at fast speeds. Additionally, the device is easy to install, and can be used with a wide range of marine electronics systems.
What Are The Technical Specifications Of The Airmar P79?
The Airmar P79 has a depth range of up to 800 feet, and can operate at speeds of up to 45 knots. It has a beam width of 45 degrees, and a frequency of 200 kHz. The device is compatible with most marine electronics systems, including those that use NMEA 0183 and NMEA 2000 protocols.
The Airmar P79 Wiring Diagram – Understanding Each Wire
Now let’s take a look at the Airmar P79 wiring diagram. There are six wires in total, which are:
| Wire Color | Function |
|---|---|
| Brown | Depth (positive) |
| Blue | Depth (negative) |
| Green | Temperature (positive) |
| Yellow | Temperature (negative) |
| Black | Ground |
| Shield | Signal Ground |
Brown Wire
The brown wire is the positive lead for the depth sensor. This wire is connected to the positive terminal of the depth sounder. The depth sounder sends a signal down the wire to the transducer, which then transmits the signal into the water. The signal bounces off the bottom of the water, and is then picked up by the transducer.
It’s important to note that the brown wire should not be connected to any other wires, as this can cause interference and affect the accuracy of the depth readings.
Blue Wire
The blue wire is the negative lead for the depth sensor. It is connected to the negative terminal of the depth sounder. The negative terminal is used to complete the circuit between the sounder and the transducer.
Green Wire
The green wire is the positive lead for the temperature sensor. This wire is connected to the positive terminal of the temperature gauge. The temperature gauge then sends a signal to the transducer, which then measures the temperature of the water.
Yellow Wire
The yellow wire is the negative lead for the temperature sensor. It is connected to the negative terminal of the temperature gauge. This completes the circuit between the gauge and the transducer.
Black Wire
The black wire is the ground wire for the transducer. It should be connected to a suitable ground point on the boat, such as the negative terminal of the battery. The black wire should not be connected to any other wires, as this can cause interference.
Shield Wire
The shield wire is used to provide signal ground. It should be connected to the signal ground terminal on the depth sounder. This prevents interference from other electrical devices on the boat.
FAQs
1. How do I install the Airmar P79?
The Airmar P79 is easy to install, and comes with detailed instructions. It is important to follow the instructions carefully, and to ensure that all wiring is done correctly.
2. Can the Airmar P79 be used with all types of boats?
Yes, the Airmar P79 can be used with all types of boats, as long as they have a transom mount. The device is suitable for use in both fresh and salt water.
3. How accurate is the Airmar P79?
The Airmar P79 is known for its accuracy, and can provide depth readings with an accuracy of within 1%. The device is also capable of measuring water temperature with an accuracy of within 0.5 degrees Celsius.
4. What should I do if I have problems with my Airmar P79?
If you have problems with your Airmar P79, then you should consult the user manual or contact Airmar customer support. They will be able to help you troubleshoot any issues that you may be experiencing.
5. How can I ensure that my Airmar P79 is working correctly?
To ensure that your Airmar P79 is working correctly, you should perform regular checks and maintenance. This includes checking the wiring for any signs of damage or wear, and cleaning the transducer regularly to prevent buildup of marine growth.
Conclusion
The Airmar P79 is a popular choice among boaters because of its reliability and accuracy. When installing the device, it is important to have a good understanding of the wiring diagram, and to ensure that all wiring is done correctly. By following the instructions carefully, you can ensure that your Airmar P79 will provide accurate depth and temperature readings for years to come.
