General, Theory of operation – Liquid Controls T350N-P User Manual
Page 3

Sponsler, Inc.
T350N-P Truck Totalizer/Printer
pg. 3
Doc# MN-T350N-P
INTRODUCTION
A.
GENERAL
The model T350N-P Totalizer/Printer displays flow directly in engineering units.
The model T350N-P utilizes the latest in circuitry design and components. The
circuitry is microprocessor based and performs the scaling and counting with only
one main circuit board.
The totalized flow is displayed on a liquid crystal display (LCD), and is printed on
standard calculator type thermal paper.
B.
THEORY OF OPERATION
Model T350N-P is used in conjunction with frequency or pulse generating source
such as a turbine flowmeter or other pulse flow transducers. The totalized flow
display may be calibrated to indicate most any unit of volume, gals., liters, scfm.,
etc. Standard units are factory-calibrated for a standard flowmeter in gallons. If
additional calibration is necessary, the dividing factor may be changed by
adjustment of internal factoring switches located on the main circuit board.
The Model T350N-P displays total flow via an LCD display and thermal printing
device. Printing of the displayed total is accomplished by pushing the PRINT
switch. The printer will show a two-line message, product delivery, time and
date, stating count, and finished count. There is a space provided for an
authorized signature. When the printer stops, the display will zero and be ready
to accept a new count. If the PRINT switch is activated during a delivery, the
count will stop and the printer will print the new information.
Power Consumption – 12V Unit
Printing – 1.9 Amp
Normal – 0.5/ 0.7 Amp