YSI 6200 - Manual (Page 100)

YSI 6200 DAS USER Manual
YSI/Massachusetts 508.748.0366, Fax 508.748.2543 Page 9-8
Sensors
Since all sensors are excited separately, it is possible to have some sensors working while others
are not, in some cases the data pattern could be indicative of the problem, in other circumstances
its hard to tell. A bad sensor output might show up as noisy or continuously stable, never
changing. Noisy data, particularly if it occurs in cycles could mean moisture getting into the
cable wires or connector pins. A continuos stable output usually indicates a permanent open or
short circuit, wire break or failure.
Meteorological (MET) Suite
In order for the EcoWatch DCP 6200 auto configuration to work, the wind speed, direction,
temperature and RH cable/connector must be mated to the 6200 DCP, When the connector is
engaged, it provides a loop back called the “HELLO” signal on pin L. All the sensors have
separate excitation voltages, except for the wind speed sensor, which generates a sine wave
frequency output proportional to the anemometer rotation.
SYMPTOMS POSSIBLE CAUSE ACTION REF
Hello signal not detected. Disconnect the Met suite
connector from the 6200, use a
multimeter or DVM to check the
6200 MET connector. Pin M to
L. Pin L should measure 3.5
volts dc or higher in reference to
ground or pin M. If voltage is not
present, the 6200 DCP will not
detect the Met sensors.
Return unit to factory. 5.2
The 6200 Met suite connector
hello signal is present on pin
L. Check the Met suite
cable/connector for continuity
between pin M to L, it should be
0 ohms.
Return unit to factory 5.2
MET
During setup, the
Met suite is not
detected by
EcoWatch 6200
configuration
wizard
The Met suite connector Hello
pins indicate 0 ohms 6200 DCP electronics input
digital port damaged.
Return 6200 DCP to factory. 5.2
Damaged sensor or 6200 DCP
input channel. Check sensor cable/connector pin
D to E for frequency output when
the anemometer is spun, if no
output, check the manufacturers
service manual. The output
frequency when spun by hand
will be about 2 to 20 Hz 5.2 No wind speed
indicated
Sensor outputs a frequency 6200 DCP electronics input
channel damaged.
Return the 6200 DCP to factory 5.2