Airmar Technology Corporation P79 User manual

offered by Busse-Yachtshop.com - page 1
SECTION 1
Introduction
35 Meadowbrook Drive, Milford, New Hampshire 03055-4613 USA
Tel [phone] • Fax [phone] • e-mail: [e-mail]
AIRMAR
TECHNOLOGY CORPORATION
m 52 2000 #17-1205
P79 Adjustable
120 kHz, 200 kHz, 235 kHz, 50/200 kHz Dual Frequency
Patent Pending
Specifications
• Excellent high-speed performance to 60+ knots (69+ MPH) when mounted
well aft
• No thru-hull penetration
• Housing material is a chemically resistant, high impact, plastic alloy
• Design has shielded piezoceramic element for noise free echo
sounder display
• Superior acoustic sensitivity when using large PZT piezoceramics
• Standard Cable length: 1m (3.4’) pigtail with in-line connector off of
transducer; 6 m (22’) extension cable
• Weight: .9 kg ( 2 lb.)
Options
• Epoxy kit #33-156
• Protective base cap, which is especially useful for boat builders
Applications
• Fiberglass hulls
• Not suitable for wood hulls
• Planing hull powerboats
• Aluminum hulls less than 1/8" thick
New • IN-HULL MOUNT • Adjustable
Easily adjusts to any deadrise angle up to 22°
Transmits sound waves directly at the bottom so strong echoes are reflected
back to the transducer
Can be removed in seconds for servicing or storage
Only the base piece is bonded to the hull. There is no adhesive layer
under the transducer face to absorb sound energy
Simplifies in-hull installation
Note: See page m 1 for footnotes.
PERFORMANCE DATA
Frequency1– Airmar Piezoceramic Designator2120 kHz – C 200 kHz – G 235 kHz – D 50/200 kHz – A
Element Material3/Diameter (mm) PZT/51 BT/51 BT/51 PZT/44
Beam Width at –3 dB 12°8°7°45°11°
Q(fr/∆f @ –3 dB)411 34 16 24 30
Rated RMS Power (W) 600 600 600 600 600
Voltage Responses: Transmit/Receive5(dB) 162/–179 167/–183 169/–185 153/–173 164/–182
Figure of Merit (Insertion Loss)6(dB) –19 –17 –16 –33 –20
Unbalanced Impedance7:Resistance, Rp (ohm)
Capacitance,Cp (pF) 350 320 370 250 350
2,460 2,710 2,440 3,870 1,900
Series Impedance [R – jX]8(ohm) 250 – j160 150 – j160 130 – j180 230 – j170 210 – j170
Acoustic Window Material LPE13 LPU13 LPU13 LPU13

offered by Busse-Yachtshop.com - page 2
AIRMAR
TECHNOLOGY CORPORATION
35 Meadowbrook Drive, Milford, New Hampshire 03055-4613 USA
Tel [phone] • Fax [phone] • e-mail: [e-mail] m 53
2000 #17-1205
New • IN-HULL MOUNT • Adjustable
98 mm
[3.86”]
∅
2
72 mm
[2.84”]
P79 installation angle Dimensions at minimum
98 mm
[3.86”]
∅
22
89 mm
[3.49”]
P79 Dimensions at maximum
installation angle
The P79
Adjustable In-hull Transducer
Makes Installation Exceptionally Easy
Installation steps:
• Select a location to install the transducer
• Measure the deadrise angle. Draw a line perpendicular to the keel
at the center of your mounting location.
• There are numbers on the lip of the base that represent deadrise
angles. Find the numbers on the base that represent your deadrise
angle. Align these marks with the guideline drawn on the hull.
• Adhere the base to the hull using an adhesive that will form a
liquid-tight seal.
• Slide the transducer into the locking ring and rotate until the angle
indicator aligns with the measured deadrise angle.
• Use two screws (included in the mounting kit) to fasten them
together.
• Lubricate the o-ring and slide it onto the transducer assembly.
• Add liquid to the base. We are recommending mineral oil be used.
• Place the transducer into the base and turn until firmly seated
transducer
locking
ring
angle
indicator
o-ring
flanged
base
P79 Exploded view