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Summary of Contents for Ilec SC-7
- Page 1 CLUBVARIOMETER SC-7 HANDBUCH EINBAU UND BEDIENUNG NOTICE D´UTILISATION INSTRUCTION MANUAL ILEC Industrie- und Luftfahrtelektronik GmbH Friedrich-Puchta-Str. 6 D-95444 Bayreuth Tel: 0921-13733 Fax: 0921-82731...
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Page 2: Table Of Contents
5. The SC-7 variometer in flight 1. The 1-second- and the 3-second-response 2. Turbulence and gusts 3. The averager 4. Cruise This manual is valid for all appliances of type SC-7 starting from serial number 951260. State of manual: September 1995. -
Page 3: Description Of The System
1.6. Additional displays At the installation of the SC-7 in the two seater, the additional indicator for the seat in the back can be connected at the rear connector of the SC-7. -
Page 4: Altitude Error
10 to 15 cm. The same applies to a compass mounted on the cover over the panel: the speaker at the rear end of the instrument may disturb in this case. Remedy: mount the SC-7 further down, or have loudspeaker taken out by the manufacturer and use a remote speaker. -
Page 5: Electrical Installation
- All connectors must have a solid mechanical lock: danger of opening - Exclude all possibilities of false polarity connections by at least using colour codes, much better keyed connectors. The SC-7 is protected against false polarity connection. - Use only professional components, no cheap automotive or do-it-yourself components, they are unreliable. - Page 6 - Wires of remote indicators are colour coded as are the connectors. - There is no warranty given by ILEC if damage is caused by false electrical connections. The battery connection of the SC-7 is protected against false polarity connection.
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Page 7: Pneumatic Connection
Mutual interference between variometers: Where an SC-7 is run alone an a TE-tube, there is normally no problem. Where a variometer with a big flask (big means here some liter, to be found with certain moving vane varios or gust filters), is hooked up to the same tube: caution! The response of the SC-7 may be distorted by the large airflow in the system in case of sink or climb. -
Page 8: Verifications
Mechanical zero The pointer of the indicator must be within +/- 0,1 m/s around 0, when the SC-7 is off (about the width of the pointer). Normally a correction is not necessary. As a consequence of an extremely hard shock, during transport e.g., one of the 2 spiral springs of the meter movement may become trapped in its... -
Page 9: Zeroing Of The Transducer
SC-7 to the TE-probe. 4.3. Temperature calibration At first delivery the SC-7 is calibrated to the enclosed temperature sensor. When changing the sensor, the instrument should be readjusted. A comparing thermometer is to be brought to the same temperature together with the sensor. -
Page 10: Turbulence And Gusts
In case the slow 3-s-filter has been selected, one will have to not only observe the position of the pointer, but also its tendency: Does it still climb (after 3 seconds), and does it at least indicate half of what is waited for, then take it. In case it stands still or even falls, continue on your way. Figure 3: Passing through an updraft 5.2. -
Page 11: The Averager
As one will overestimate the average climb rate by 50 to 100 % when relying on the vario display and one's power of estimation alone, the SC-7 is fitted out with an averaging filter. Figure 5 shows the response of the averager upon entering and circling in a thermal with an updraft of constant... -
Page 12: Cruise
Figure 5: Averager The plane, curve 2, accelerates very fast to its new climb rate of 1.3 m/s. The slight increase in the sinkrate of the glider has been neglected. After one full circle, exactly after 25 seconds, the averager shows the new climb rate (curve 3).
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