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by A&A Tech

Display type EEM AM4 H01

Display type EEM AM4 H01

This instrument presents flight and engine parameters.

The instruments include four displays. They presents parameters:

1. Display A (upper left):

  • Engine speed – in the left side of the display;
  • Rotor speed – in the right side of the display;

Display B (upper right):

  • Inlet air pressure – in the upper left quarter of the display;
  • Inlet air temperature – in the bottom left quarter of the display;
  • Oil pressure – in the upper right quarter of the display;
  • Oil temperature – in the bottom right quarter of the display;

3. Display C (bottom left):

  • Cylinder head temperature – in the middle of the display; its right bar graph shows the temperature of the right side of the cylinder head, and the left bar graph – the temperature on the left of cylinder head;
  • Exhaust gas temperature – in the bottom of the display; its right bar graph shows the temperature measured of the right side of the engine, and the left bar graph – the temperature on the left.

4. Display D (bottom right):

  • Hobbs (total engine running time) – digits in the bottom right of the display;
  • Voltage – the upper left of the display;
  • Number of recorded threshold crossings – the upper centre of the display (e00);
  • Flight time (measured from the last start of the engine) – digits in the bottom left of the display;

Lp.

Parameter

Symbol/

name 

in display

Unit

Range of bar graph indicator

Warning/alarm thresholds

Warning 

Alarm 

1

Engine speed

ENGINE

RPM

0 – 6000 rpm

from 1400

to 1600 rpm#

 

from 5500

to 5800 rpm

under

1400 rpm#

 

above 5800 rpm

2

Rotor speed

ROTOR SPEED

RPM

0 – 600 rpm

from 150

to 200 rpm

 

from 400

to 450 rpm

under

150 rpm

 

above 450 rpm

3

Cylinder head temperature

CHT

°C

0 – 120°C

from 100

to 110°C

above 110°C

4

Exhaust gas temperature

EGT

°C

0 – 900°C

under

500°C #

 

from 850

to 900°C

above 900°C

5

Voltage in electric power instalation

---

V

----

from 11

to 12V

 

from 14

to 15V

under 11V

 

above 15V

6

Flight time

FT

H:min

----

-------

--------

7

Total engine running time

HOOBS

H:min

----

-------

--------

8

Number of recorded threshold crossings

E

---

----

-----

-----

9

Inlet air pressure

MAP

inHg

28 – 50 inHg

from 43

to 46 inHg

above

46 inHg

10

Inlet air temperature

MAT

°C, F

from -5 to 70°C

from 0

to 5°C

 

from 50

to 60°C

under

0°C

 

above 60°C

11

Oil pressure

OIL p

Bar

0 – 7,5 bar

from 1,0

to 2,5 bar#

 

from 5,0

to 7,0 bar

under

1,0 bar#

 

above

7 bar

12

Oil temperature

OIL T

°C

0 – 140 °C

from 50

to 60°C

 

from 110

to 130°C

under

50°C

 

above

130°C

The casing is made of anodised aluminium. The LCD display is protected by high quality acrylic cover with anti-glare coating. This makes the device durable and easy to maintain.

The readings are displayed in both digital and graphical form. For immediate recognition of the status, colour codes are used. If the air speed stays within the desired range, the instrument displays values in green. If the warning threshold is crossed, the instrument informs the pilot by changing the colour of graphs and digits to orange. If alarm levels are reached, the digits and graph bars turn red. The threshold values (both upper and lower) are to be defined by the buyer at placing an order.

ParameterValue
Dimensions (height x width x depth)175 x 183 x 67 mm
Display diameter156 x 164 mm
Mass345 g
Power supply12 V (< 340mA)

For details see the manual.