Inspecting And Cleaning The Transducer Face - Simrad ES80 Reference Manual

3 Select
Transducer
4 Select which transducer to monitor.
5 Observe the impedance curve for the chosen transducer.
Select
Fixed Axis
An operational transducer element will have an impedance of approximately 75Ω
±40%. However, various transducers will have different values, and you need
to check the relevant data sheet. Composite transducers have a relatively flat
impedance curve. Older transducers with "ton-pilz" elements have a slightly higher
impedance at the beginning of the ping. This is by design.
• If you measure ∞Ω (open circuit), you can assume that the transducer impedance
transformer has broken, or that the cable is damaged.
• If you measure 0Ω (short), you can assume that either the transducer impedance
transformer or the cable has shorted. You may also have a problem with salt
water penetration.
6 Select to close the dialog box.
OK

Inspecting and cleaning the transducer face

Marine growth (biological fouling) on the transducer face reduces the ES80 performance.
For this reason, it is important to keep the transducer face clean. Every time your vessel
is in dry dock, you must remove the marine growth. At the same time, you must inspect
the transducer closely for physical damage.
Prerequisites
The following tools and consumables are required.
• Personal protection
• Fresh water
• A mild synthetic detergent and a plastic brush
• A piece of wood or plastic without sharp corners
• Citric acid (<50%) (only if required)
Context
During normal use, the transducer is subjected to biological fouling. If this marine
growth is excessive, it will reduce the performance of the ES80. Whenever opportunity
arise, typically when the vessel is dry-docked, the transducer face must be cleaned for
shells and other marine growth.
It is important to check the transducer for physical damage. Any cracks, fractures or
holes in the red protective coating may result in a water leak, and a leak may cause
irreparable damage to the transducer.
406273/C
to open the page.
to make the impedance curves easier to read.
Operating procedures
211