Flytec 4005 * - Manual (Page 10)

Speedometer
General remarks
A speed sensor (speedometer) can be purchased as an accessory. The speed sensors in the
3000 series can also be used with instruments in the 4000 series.
The accuracy of a vane wheel sensor is highly dependent on its point of attachment.
Additionally, the individual probes have an accuracy of approximately ±2.5% (industrial stan-
dard) resulting from manufacturing operations and it is possible for two probes not to display
exactly the same speed. These deviations can be largely corrected by the instrument. (
Ł opti-
on mode of the speedometer).
Display
If a vane wheel sensor is connected to your instrument, speed (in kph, mph or knots) relative
to the air can be shown in the lower display by pressing the key.
When a stall alarm is switched on, a warning tone sounds when speed falls below a certain
absolute speed. No stall alarm will sound at speeds that are below 10 kph. If the threshold is
set at 10 kph (or 5 mph), the stall alarm is switched off.
The current time can be shown every 30 sec in the SPEED display (
Ł option mode of the spee-
dometer).
Correction
If a probe always displays too much or too little, this
deviation can be corrected at the third level of opti-
on mode.
Speedometer setting mode
The response threshold of the stall alarm can be alte-
red. If the threshold is set at 10 kph (or 5 mph), the
stall alarm is switched off.
Option mode of the speedometer
At the first level, you have a choice of whether the
time should be displayed automatically every 30
seconds when the speed display is switched on.
At the second level, the desired unit of the speed dis-
play is set. You can choose between kilometers per
hour (kph), miles per hour (mph) and knots (kts) by
using the key and the key.
At the third level, you can also make adjustments to
the correction of the speedometer. The correction
value is given in percent using the key and the key.
If the speed display is uncorrected, the display will
show 100 (%). If the display still shows a 4% exces-
sively high value (e.g. 50 kph instead of 48 kph), the
display is corrected by setting 96 (%). This means
that the display will now always show 96% of the original speed.
START - STOP
RESET
CLEAR ALT 2
21 Operating Instructions FLYTEC 4005
SET-MODE
stallalarm
OPTION-MODE
Display
• SPEED & TIME
• SPEED
Units
kmh-mph-kts
SPEED correction
50..100..150
SPEED
SPEED
SPEED 4 Sec.
OPTION
OPTION
➀
➁
➂
TIME
SPEED
MEMO