51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
5
NOTE: If sensor housing is provided, only use connecting cable
ordered from the factory. Use of cables not provided by the
factory may void the warranty.
1.4.3 4–20 mA Output Signal Wiring
The 4–20 mA output connections are made by loosening
the screws at the output connections terminal strip, insert-
ing the wires with spade lugs and tightening the screws.
Refer to Figure 4. The loop is optically isolated, has
non-grounded outputs, and can drive a 1000 ohm load.
Recommended wire is 22 gauge, twisted shielded pair.
Shield and black wire should be terminated at the (–)
output terminal. The shield should be floating at the
driven device.
1. Bring wires into housing.
2. Connect output wires to appropriate terminals.
3. Replace terminal strip cover.
4. Replace housing cover.
2.0
Set Up and Operation
2.1
User Interface
The Model 350/351 Transmitter can be programmed for a
variety of level control applications. Configuration data is
entered via three tactile-feedback push buttons located on
the circuit board under the cover of the enclosure (see
Figure 6). The push buttons and their functions are
shown below.
Upon power up, the LED will display the following
message:
MAGNETROL INT’L
followed by a series of walking
dots as follows:
.....
, or one of the chosen displays.
NOTE: The 350/351 is able to display a choice of four display modes.
This display may be changed by accessing the
Special
Menus
described on pages 12 and 13.
IDLE
–
MAGNETROL INT’L
… (Preferred Mode)
DIST
–
Displays distance in run condition
LEVL
–
Displays tank level in run condition
LOOP –
Displays current output
UP/RAISE
– Used to scroll up through menu selec-
tions or raise numeric values. Holding down for a few
seconds will increase the rate of change.
LED
Display
ENT
Figure 6
User Interface
