1. Introduction
The QHW series of scales provides an accurate, fast and versatile series of general purpose
weighing scales with counting, % weighing and check-weighing functions. There are 4 models
in each series, with capacities up to 30 kg. They all have stainless steel weighing platforms on
an ABS base assembly. All the keypads are sealed, color coded membrane switches and the
displays are large easy to read liquid crystal type displays (LCD). The LCD’s are supplied with a
backlight. All units include automatic zero tracking, audible alarm for pre-set weights, automatic
tare, pre-set tare and an accumulation facility that allows the count to be stored and recalled as
an accumulated total.
2. Key descriptions
Zero
Set the zero point for all subsequent weighing. The display shows zero.
A secondary function is "Enter" key, when in parameters or other functions.
Tare
Tares the scale. Stores the current weight in memory as a tare value, subtracts
the tare value from the weight and shows the results. This is the net weight.
Entering a value using the keypad will store that value as the tare value.
A secondary function is “increment” to increase the active digit, when in
parameters or other functions.
Func
Select the functions of the scale, if the scale is weighing it will select parts
counting. If not in weighing mode, it will return to the weighing.
Secondary function (
C
) is to act as a clear key when setting values for
parameters or other functions.
Limit
Set the limits of check weighing. Allow settings of the low limit or the high limit
or both.
Secondary function is “increment” to move the active digit to right, when in
parameters or other functions.
%
Enter in to the percent weighing function. Allows the weight, unit weight, and
count to be seen when parts counting.
Secondary function is “increment” to move the active digit to left, when in
parameters or other functions
To print the results, send data to PC or printer by using the optional RS-232
interface. Also add the values to the accumulation memory, if the accumulation
function is not automatic.
Secondary function (
ESC
) is to return to normal operation when the scale is in
parameter setting mode.
U
This key will select either kilograms or g for the weighing unit.
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