LAMBRECHT meteo
|
AEM
|
METEO-LCD 14742
aem.eco
page
–
3
1 Introduction
The digital LAMBRECHT meteo indicators METEO-LCD
(14742) are multipurpose indicators which are designed to
display the various meteorological and nautical parameters.
There are special versions for applications on civil ships (NAV)
and for industrial (IND) purposes. The versions -IND and
-NAV are also available as versions -IND/ W and -NAV/ W for
water resistant panel mounting (front plate design of the LCD
in the style of protecting class IP 66).
In order to enable a safe reading under different lightning
conditions contrast and brightness can be aligned over a
wide range.
Just like many other electronic devices, which are in use for
such purposes on ships the standardised data input of the item
is carried out in accordance with the NMEA 0183 standard
version 2.30. Assumed that all digital input information are
available from a talker, the below mentioned modes of opera-
tion can be selected with a simple operating menu.
If the indicator was purchased as a component of a complex
meteorological measuring system, further operating manuals
of other devices as well as general wiring diagrams of the
entire system have to be considered.
Before starting installation and connection work on the indi-
cator, we recommend checking the delivery for damage and
completeness.
2
Functional description
For the display of information an illuminated transmissive
LC-Display with 160 x 128 dots is in use. In order to adapt it
to the ambient conditions contrast and brightness can be set
by the user.
For the signal input a serial RS 422 interface is provided.
All incoming data are expected as digital message strings
according to the NMEA 0183 standard which nowadays is
world-wide in use.
Once switched on the power supply the display will show
“System init... Please wait...” for approx. 15 seconds and after-
wards an opening mask containing the firmware version for a
short time and than it will move to the final mode of operation
as it has been in use before.
All required data have to be transferred to the indicator
as standardised serial data strings in a message format
according to the NMEA 0183 format e.g. generated by a
LAMBRECHT meteo data logger or a similar device. More
information can be obtained from the chapters at the end of
this document.
The 24 VDC supply voltage and the serial interface RS 422/485
are galvanically isolated.
3
Performance of the available indicator
types
In the present document the operation of the model versions
METEO-LCD-IND and METEO-LCD-NAV are commonly
described. The variations between the three models are men-
tioned in the table below.
Mode
Parameters
Display
LCD-type
„Rel. Wind“
„rel. WD“ +
„rel WS“
quasi-analog
& digital
IND, NAV
Dual Mode
(manually)
change betw.
WIND and
MET
quasi-analog
& digital
IND, NAV
Meteorology
TA+ r. H.+ PA+
TD
digital
IND, NAV
„True Wind“
„true WD“+
„true WS“
quasi-analog
& digital
NAV
WD Wind direction
WS Wind speed
r. H. Rel. humidity
TA
Temperature air
PA
Pressure air
TD
Temperature dew point
Versions
Id No.
METEO-LCD-IND
00.14742.401002
METEO-LCD-IND/ W
00.14742.111002
METEO-LCD-NAV
00.14742.301002
METEO-LCD-NAV/ W
00.14742.011002
W = suited for waterproof console mounting
(front panel design based on protection class IP 66)