Instrukcja obsługi MGL Avionics TC-4
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Introduction
The TC-4 is a 2 1/4” sunlight readable 4 channel thermocouple color display instrument.
The instrument can be configured for 5 different temperature display screens. The display can be configured to group
EGTs and CHTs to common settings or each thermocouple channel can be independently displayed with individual
programmable high alarm and probe type. The TC-4 also has a trend graph and maximum values display screen.
The TC-4’s high accuracy is due to its built in thermocouple linearization curves and cold junction compensation
techniques. Temperature probes can be common J, K or E type thermocouple probes as used in CHT and EGT senders.
Temperatures can be displayed in degrees Celsius or degrees Fahrenheit from -100ºC to 1200ºC (-148ºF to 2192ºF).
The TC-4 also features a built in engine leaning facility which allows the pilot to optimize the fuel mixture according to
peak EGT temperatures as well as a cruise mode facility to provide instant identification of changing EGT/CHT trends.
The TC-4 can also be interfaced via the CAN bus to an external RDAC unit (Remote Data Acquisition Unit). This allows
for easier installation as the RDAC unit is normally mounted in the engine compartment.
1 Features
•Large 1.8” high resolution 160x128, sunlight readable, wide viewing angle, 1000 cd/m2 TFT LCD display
• 5 different temperature display screens
• Supports J, K and E type thermocouple probes
• Temperatures can be displayed in ºC or ºF from -100ºC to 1200ºC (-148ºF to 2192ºF)
• High accuracy: Built in thermocouple linearization curves and cold junction compensation
• Records maximum temperatures reached for each channel
• Includes a trend graph display of each thermocouple channel
• Engine leaning function according to peak EGT temperatures
• Engine cruise mode to instantly identify changing EGT/CHT trends
• External RDAC interfacing via the CAN bus
• Standard 2 1/4” aircraft enclosure (can be front or rear mounted)
• Rotary control plus 2 independent buttons for easy menu navigation and user input
• An external output activates when a high alarm condition has been reached
• Wide input supply voltage range of 8 to 30V DC with built in voltage reversal and over voltage protection
for harsh electrical environments
• 1 year limited warranty
Vega TC-4
One to four channel thermocouple
(EGT/CHT) indicator
Operating Manual – English 1.00
Vega TC-4 Operating Manual Page 2
2 TC-4 Layout
3 Main Displays
The TC-4 has 5 different temperature display screens. The main display screen can be selected in the “TC SETUP”
menu. The Trend graph and Max Values display can be selected by rotating the rotary control.
Vertical Display Horizontal display Numeric Display
EGT/CHT Display Trend Graph Max Values
F2 / Down Button:
Menu System: Softkey button
Normal Display: Enable/disable
cruise mode
Sunlight readable color
graphic display:
Backlight can be adjusted in the
menu system
Rotary Control (Up/Down) & Enter Button:
Press the rotary control during the normal display screens to access the menu system.
Rotate anti/clockwise for up/down menu scrolling. Rotate the rotary control during the
normal display mode to view the Trend Graph and Max Values display.
F1 / Up Button:
Menu System: Softkey button
Normal Display: Enable/disable
engine leaning mode
2 1/4” enclosure.
Can be front or rear mounted
Vega TC-4 Operating Manual Page 3
3.1 Trend Graph display
This display can be accessed by rotating the rotary control during the normal display
mode. The trend graph displays the last 100 seconds of temperature readings.
3.2 Maximum Values display
This display can be accessed by rotating the rotary control during the normal display
mode. Press the F1/Up button when the max values display is showing to reset the
maximum values to the current temperature values.
3.3 Engine leaning mode
EGT information is also very useful for fuel mixture control. As the fuel mixture is leaned,
so the exhaust gasses get hotter. This rise in temperature is a sign of increased
combustion efficiency as the optimum mixture setting is approached. If the leaning
progresses past a certain point however, the temperature will begin to drop. This
temperature drop is the result of reduced energy output from the diminished fuel flow.
The best operating mixture for aircraft engines is in the vicinity of this peak EGT reading.
The TC-4 has a special Leaning mode, which easily identifies the peak EGT condition
allowing you to adjust your fuel mixture for best performance.
Fuel mixture should be adjusted once you have decided on a suitable cruise power
setting (typically 70%). Press the F1/Up button on the main display to enable the engine
leaning mode. The "LEAN" label is displayed at the top of the main display to clearly
differentiate it from the normal operating mode.
As the fuel mixture is slowly leaned past the point at which the temperature begins to
drop (by more than 10°C/15°F), the absolute EGT temperatures will change to show the
EGT reading relative to this peak. The sequential order as each cylinder peaks is also
shown.
Leaning mode can be canceled by pressing the F1/Up button again.
Note: The maximum values are stored in non-volatile
memory and are recalled on power-up.
Specyfikacje produktu
| Marka: | MGL Avionics |
| Kategoria: | Sprzęt pomiarowy |
| Model: | TC-4 |
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