Liquid Controls T650N SERIES - Manual (Page 3)

Sponsler, Inc. T650N Series Cryogenic Truck Totalizer pg 3 DOC# MN-650
INTRODUCTION
General
The Model T650N Truck Totalizer provides flow totalization in any engineering unit. The totalized flow is displayed via
an accumulating 8 digit Liquid Crystal Display (LCD) electronic counter and an 8 digit resettable LCD.
Negatives previously associated with LCD’s - poor cold temperature performance, night clarity & condensation, which
is a byproduct of heaters, and incandescent lighting - have been eradicated with incorporation of a low temperature
coefficient LCD (-30
o
C) and electroluminescent backlighting. The latest technological advances have been used to
develop a precise, reliable totalizer.
Theory of Operation
The T650N initially amplifies & shapes the incoming pulses generated by the turbine’s response to flow. The amplified
pulse train is then scaled and divided to produce a totalized display in the desired engineering unit – gallons, liters,
pounds, SCF, m
3
, etc. The “power on reset” feature insures that the display is reset to zero during the initial power up
sequence. A manual reset function is available if so desired.
Testing
A single switch “System Test” function enables maintenance personnel to quickly and effectively troubleshoot a system
failure, thereby reducing costly maintenance time. “System Test” provides a visual diagnostic indication of every
critical function of the T650N. With few exceptions, the system failure will be identified by the fault isolation LED’s of
the “System Test”.
Calibration
Field calibration is accomplished by incorporating a calibration factor based on the K-Factor of the turbine. A divider
switch provides a divisional increment of 10X from 1-10,000. The calibration factor is inserted using 4 BCD switches &
the 0-1 dip switch. The calibration factor range is .0001-1.9999. Verification of the electronics accuracy can be
accomplished by conventionally utilizing an external oscillator or by depressing the “System Test” switch which applies
a calibrated 500 Hz input signal to the system.
Temperature Compensation – Optional
A microprocessor based temperature compensation system designed to correct flow information based on product
temperature is available for use in the T650N. The Model 820 Temperature Compensator accommodates up to 8
different products (field selectable via a rotary switch) and accurately calculates the selected product density
acknowledging the non-linearity of the temperature probe and the product.
Installation of the Model 820 Temperature Compensator provides access to wireless I.R. communication for data
transfer to the Model SP824 portable ticket printer and provides an output for addition of a PCM-100 module for Pump
Control.
After market installation of temperature compensation requires minimal expertise and takes less than 15 minutes to
accomplish. By installing the 820 TC module, one connector to the 650 factoring board and the flip of a switch,
compensated totalization is accomplished.