User’s & Technical Manual –
LEVEL TRANSMITTER LTR7000
GELEC
Industrial Electronics
PAGE
13
STATUS LED
The STATUS LED inside the transmitter enclosure,
indicates various operational stages of
the LTR7000. This LED is useful during connection and calibration stages and it is not visible
during normal operation with the cover screwed on the enclosure. Consult the following
table for quick reference and the relevant sections for detailed information.
LED COLOR
LTR7000 STATUS
GREEN
Device powered - Normal operation
(magnetic float within sensor range)
FLASHING GREEN
High-Level calibration mode
FLASHING BLUE
Low-Level calibration mode
GREEN/RED
Confirmation of calibration processes
FLASHING RED (3 Hz)
ERROR 1
FLASHING RED (1 Hz)
ERROR 2
OFF
Device not powered
ACTIVE MEASURING SEGMENT
Only a specific segment of the LTR7000 square tube includes the measuring hall effect
sensors, and this is defined by
two engraved lines at the back side of the tube
.
The bottom engraved line is located 3cm above the bottom of the tube in all LTR7000
versions. The top engraved line can be found close to the transmitter enclosure. The
distance between them, depends on the LTR7000 version.
Install LTR7000 in a way that the application’s fluid level (and therefore the float’s magnet)
is constantly
within the active measuring segment,
in order to have proper operation.
MAGNETIC FLOAT
The used magnetic float must have proper buoyancy, with the incorporated magnet fitted
at the correct position in it. Check the relation between the magnet and the level when the
float is in the fluid. The float must be suitable for the application fluid and process
conditions (pressure, temperature, density etc.). Its shape and dimensions must allow free
and vertical movement in the measuring chamber, as close as possible to the LTR7000.
