ZENITH 140 INSTRUCTION MANUAL 
 
10 
About the Zenith 140 
The Zenith 140 is a state-of-the-art pump, and level controller, that provides 
advanced operating routines suitable for an extremely wide variety of 
applications. The system combines premium specification with high 
performance even in the most arduous applications where high turbulence 
and foam or froth is present. 
 
 
Functional Description 
The Zenith 140 level and pump controller is a highly developed ultrasonic 
level measurement system which provides non-contacting sophisticated 
pump and level control routines suitable for an extremely wide variety of 
applications.    
Easy calibration and maintenance free “fit and forget” performance mean 
that you can install the Zenith 140 pump controller rapidly and with 
confidence.  Six user-definable relays with adjustable, individual on and off 
points, seven user-definable digital inputs, isolated mA output, RS 232 and 
intelligent performance logging software features provide the user with a 
superior pump management system and comprehensive level measurement 
information.  
The Zenith 140 operates on the principle of timing the echo received from a 
measured pulse of sound transmitted in air and utilises the unique DATEM 
software (Digital Adaptive Tracking of Echo Movement).   This is an entirely 
new digital mapping technique developed especially for the Pulsar Ultra 
range.