SECTION 1
MINIFLEX LR PROGRAMMABLE LEVEL CONTROLLER
USER MANUAL
INTRODUCTION
Miniflex LR is a programmable multi-purpose level measurement and flow control
instrument. It consists of two elements, a wall mounted transceiver, which has a display and
an integral keypad for programming, and a transducer, which must be mounted directly above
the surface to be monitored.
Ultrasonic pulses are transmitted by the transducer to the surface of the material to be
monitored and are reflected back to the transducer. The time period between transmission and
reception of the sound pulses is directly proportional to the distance between the transducer
and the material.
Since speed of sound through air is affected by changes in temperature, a separate or
integrated temperature sensor may be fitted to improve accuracy.
Miniflex LR is capable of the following functions:-
a) Distance Measurement (distance from a datum)
b) Level Measurement (height above datum)
c) Volume Measurement
d) Pump Control
e) Open Channel Flow Measurement (O.C.M.)
f) Differential Level Measurement
WARNING
DO NOT OPEN THE TRANSCEIVER
TERMINAL COVER WHEN THE POWER IS ON TO
THE SUPPLY OR RELAY TERMINALS.
IMPORTANT INSTALLATION REQUIREMENTS
1: A SWITCH OR CIRCUIT BREAKER SHALL BE INCLUDED IN
THE INSTALLATION
2: IT SHALL BE IN CLOSE PROXIMITY TO THE EQUIPMENT AND
WITHIN EASY REACH OF THE OPERATOR
3: IT SHALL BE MARKED AS THE DISCONNECTING DEVICE FOR
THE EQUIPMENT
Ref: MINIFLEX LR MANUAL Rev. 0 1
