Conair GB/ WSB User Manual page 85

Press "CE" key to check this RAW number for several seconds.
Load cells put out a very small voltage that varies slightly as the
load cell is deflected.
board, to a pulse train and these pulses are counted for 1 full second
to determine a weight load.
from 0 to approximately 249,850.
A properly operating set of cells will range from about 55,000 to
120,000; a span of about 65,000 from empty weight (weigh bin in place),
to a full bin weight of 2000 grams.
90,000 from empty to 9000 grams). The system will work correctly as
long as the empty bin weight readout is between 1 and 149,248.
is the highest number that the software will accept for zero weight
calibration (see parameters, LCZ).
press the ZERO weight key, the display will say (ZERO LOW).
This RAW COUNT number is converted by the software, based on the load
cell calibration information, to the proper gram readout.
The RAW COUNT numbers are more useful in diagnosing load cell problems
because they eliminate any calibration errors that might have occurred.
Press "CE" key to display this RAW number for several seconds.
To observe this number continuously,
PROGRAM mode.
+---------------------------------------------------+
¦ Press:
¦ Press:
¦ Press:
¦ Press:
¦ Press:
¦ Press:
+---------------------------------------------------+
A floating, drifting number usually indicates the load cells are not
plugged in.
A readout of 0 indicates an open circuit, a damaged wire or cell.
A full scale readout of 249,850 indicates a damaged wire or cell.
A set of 3 K load cells will put out about 33 more counts for every
gram of weight that is added.
weight to the bin.
counts for each gram added.
If you call us for help in solving a load cell problem, it is helpful
if you can tell us what the RAW COUNT number is with the bin empty, and
with a known weight in it.
display the RAW COUNT number for the current weight.
To OPERATE with DAMAGED load cells in a VOLUMETRIC mode,
see KEYPAD, *87, Volumetric mode.
LOAD CELL RAW SIGNAL READOUT
This voltage is converted, on the circuit
The software can handle a range of counts
If the number is over this when you
* Display will say:
22222 Display will say:
* Display will say:
98 Display will say:
* Display will say:
EXIT Display will say:
A test of sensitivity is to add a small
The RAW WEIGHT count should increase by about 33
(10 counts per gram for 10K load cells.)
Pressing the CE key at any time will
Page 86
(10 K load cells range about
use the *98 function in the
(PASSWORD) ¦
(P
(INSTR __) ¦
(CNT OFF ) ¦
(CNT
(P
149,248
x) ¦
ON ) ¦
xxxxx) ¦