Manual

DT220 Users Manual version 1.a Configuration Parameters

2. The DT220 prompts “Press ENTER to read deadload”. Remove all weight from the

scale. Press the Enter key. The DT220 reads the scale’s deadload weight.

Calibrate 3: Deadload Only

Use this function to re-calibrate the deadload weight without affecting the span

calibration. The display prompts “Press ENTER to read deadload”. Press the Enter key

to read a new deadload.

Calibrate 4: Multi-point calibration

Use this function to calibrate the scale using up to 5 calibration points to 'linearize' the

load cell. Best results are obtained when the DT220 and load cells have reached thermal

equilibrium (power applied for approximately 30 to 120 minutes depending on load cell

size).

1. The DT220 prompts “Press ENTER to read deadload”. Remove all weight from the

scale. Press the Enter key to obtain the deadload weight. Press the Cont. key to

continue without reading a new deadload weight.

2. The DT220 prompts “Calibration point 1” and “Enter calibration weight:”. Place the

first calibration weight on the scale. Enter the calibration weight using the numeric

keypad. Press the Enter key. The DT220 reads the calibration weight.

3. The DT220 prompts “Calibration point 2” and “Enter calibration weight:” Place the

second calibration weight on the scale. Enter the calibration weight using the numeric

keypad. Press the Enter key.

4. Repeat step 3 for up to 5 calibration points. Press the Clear Entry key to complete

calibration if less than 5 calibration points are used.

• Use the Cont. key (↓) to continue to the next calibration point if the current point has

already been calibrated.

Calibrate 5: Adjust Gain Calibration

Use this function to make small adjustments to the span calibration factor. Zero the scale

and then place a known weight on the scale.

1. The DT220 displays the adjustment Count, the weight on the scale and an indication

of “center of digit”. The center of digit displays -25, -0, +0, or +25. The center of

digit occurs when the display toggles between -0 and +0.

2. Use the Cont.(↓

↓↓

↓) and Review(↑

↑↑

↑) keys to lower or raise the calibration factor. The

calibration factor is increased or decreased by the Count amount. The Count can be

changed by using the numeric keypad:

1 = 1 4 = 1,000

2 = 10 5 = 10,000

3 = 100

3. Press the Enter key or Clear Entry key to exit the Adjust Gain Calibration function.