Page 38 250 Technical Reference
To perform a new sample:
1. Access the weigh mode.
2. If a container is used, tare off the container weight by pressing the [TARE].
3. Place the sample pieces on the scale.
4. Press and hold the [COUNT] key for two seconds. The default sample size will be displayed.
If this is the first sample with the indicator SPEC will be displayed. Use the <SEL> and
<EDT> keys to enter a new sample size. The <EDT> key will enter a number and the <SEL>
key will select to the next number. Be sure to use leading zeroes if sample size is less than
1000.
5. Press <OK> and the selected sample size will be stored.
6. If printing is enabled the sample quantity and weight will be printed.
UNITS
Use the [UNITS] key to switch the displayed reading between lb and kg or other selected unit.
This will affect the displayed and printed weight but will not affect entered data.
HOLD
Use the [HOLD] key to hold a particular weight on the display regardless of a variance of weight.
The hold function will be designated on the display with the annunciator. Press the [HOLD]
key again to unlock the hold function.
PEAK HOLD
Use the [PEAK] key to hold the largest absolute weight. Either positive or negative weight is
stored in the peak value (e.g. -30 is larger than 25). The Hold annunciator is active when the
display is showing the held weight. To clear the stored peak weight, hold the [PEAK] key for 2
seconds.
LIVE WEIGHT AVERAGING
The [LIVE.WT] key is used to enable live weight averaging. With this feature, it is possible to
determine the weight of a continually moving mass (e.g. livestock).
Press and hold the [LIVE WT] key to switch between normal weighing and live weight mode. The
display will briefly show NORMAL or LIVE.WT.
During normal weighing, this key operates exactly like a manual HOLD key.
Follow the steps below for In Live-Weight mode:
1. Press the [TARE] or [ZERO] key to clear any residual weight and return the scale to the zero
state.
2. Place the mass to be weighed on the scale.
3. Once the weight moves outside the zero 'dead' band the indicator begins to calculate a long
term average that compensates for any movement in the mass. The indicator flashes the
Hold annunciator
and shows the current average value.
4. The Hold annunciator
is steady when the final sample weight is shown on the display.
5. Press the [LIVE WT] key to force the sample to be re-calculated.
6. Once the weight is returned to the zero 'dead' band, the cycle can be repeated.
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