YSI 6 series Manual do Utilizador descarregar pdf (Página 25)

CHECK THE ROX MEMBRANE SURFACE

The black painted surface covering the ROX membrane is necessary for the probe to function properly

in directly focused ambient light. The probe will function properly even if the paint is slightly scratched

or you are able to see the LED’s flashing through small holes in the paint. The probe will measure

properly with a loss of up to 30% of the protective black coating. If greater than 30% of the coating is

lost, ambient light could deteriorate the sensor performance and the membrane may need to be replaced.

The painted surface CANNOT be painted with black paint or colored with a marker to remedy the

problem.

THINGS TO WATCH

1. Check the position of your wiper. Make sure that there is at least a business card’s thickness of

clearance between the wiper body and the probe face.

2. Tighten the set-screw against the wiper shaft’s flat area. Make sure that the screw tightens and

the threads are not stripped.

3. Confirm that the wiper pad is clean and properly positioned.

4. Make sure that the probe face is clean! If grease gets on the pad or finger oil gets on the optics

the probe will not calibrate or measure correctly!

5. Battery voltage spikes in the data (>13.5 VDC) are signs that the sonde may have a

malfunctioning or leaking optical probe. Water in the sensor electronics can cause the sensor

power supply in the sonde to overload and cause erratic data. The leaking probe can also effect

the operation of the other sensors. Remove the optical probes one at a time and run to isolate the

problem.

Note: A mis-parking wiper is an indicator of a malfunctioning and/or wet probe.

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YSI 6 series Manual do Utilizador Página 25