Owner's manual

Sponsler, Inc.

T650N Series Cryogenic Truck Totalizer

DOC# MN-650

Initial System Start Up Procedure

Assure all Field Terminations are complete, correct and secure. Turn on the T650N and observe that 8 zeros are

displayed and the LCD backlighting is on. Depress reset if external reset option was selected.

Refer to DWG. # SCI-T650N-REV C-TC-INT

Open the T650N enclosure and depress “System Test” S9. All LED indicators of the 10 position bar graph D1-D10

should be illuminated except D3 if “1” is selected by “0-1” Switch S2. Also observe that both the LCD counters

increment equally. D4, 5, 6, & 7 will blink. Each LED indicates a specific T650N function. The indicators are

extensively discussed in the Description Section and in the Troubleshooting Section which should be referenced in the

event of a failure of the T650N.

Switch, Adjustment, and Display Descriptions

S1 - Power Switch: 3 Amp DPDT; switches fused input power to the logic circuits of the factoring and

display boards.

S2 - “0-1” Switch: 2 position D.I.P.; permits increased calibration accuracy when the calibration factor

begins with a ‘1’ such as .015979 (Refer to example #3).

S3-6 - Factoring Switches: 10 position (0-9) BCD rotary; inserts the desired calibration factor digitally with S3 as

the MSD & S6 as the LSD.

S7 - Divider Switch: 5 position rotary; provides the proper divider for decimal point placement in the

calibration factor.

Position 1=1, 2=10, 3=100, 4=1000, 5=10000

S8 - Reset Switch: Single pole, momentary pushbutton; resets display and all logic circuits when

depressed and released.

S9 - System Test: Single pole, momentary pushbutton; activates LED bar graph and injects 500 Hz signal

to increment LCD counters while depressed.

S10 - Display Test: Single pole, momentary pushbutton; injects signal to increment large LCD while

depressed.

S11 - Display Decimal Point: Display Blanking & Backlight Control: 2 position, 4 pole D.I.P.

S11-1: displays 10ths Decimal Point when in ‘1’ position

S11-2: displays 100ths Decimal Point when in ‘2’ position

S11-3: display blanks when in ‘3’ position and power “OFF”

S11-4: extinguishes backlight when in ‘4’ position and power “OFF”.

S12 - TC Selector: 2 position D.I.P.; permits by-pass of the temperature compensation module. Positions

0=w/o TC; 1=TC incorporated.

R1 - Sensitivity Adjustment: Single turn potentiometer; establishes input signal amplitude required to initiate the

count sequence.

CCW = minimum sensitivity CW = maximum sensitivity