Omega CNiS8DV User Manual

Page 27

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Max scale should not be more than 50% FS because of noise related
issues.

Press

d

27) Display flashes

STRD stored message momentarily and then

advances to

ALR1 only, if a change was made, otherwise

advances to

ALR1 Alarm 1 Menu.

Example 2: Scaling without Known Loads.

If

DSBL Disabled Load Submenu was selected, instrument is ready for

scaling Without Known Loads method.

To scale without known inputs, calculate inputs based on transducer specifications
and manually enter them on the via front panel push-buttons. The following example
assumes load cells with this specification:

Maximum Load:

100.0 lb

Output:

3.0 mV/V

Sensor Excitation

10 V

Maximum Sensor Output = 3.0 (mV/V) x 10 (V) = 30 mV

1. Determine the correct values for Inputs (

IN!1 and IN!2).

Calculate

IN!1 and IN!2 using the following equation:

IN = (Sensor Output) x (Converison Number) x (Multiplier)

Conversion number is a coefficient of conversion between input values
and real full display range (10000 counts). See Table 3.1 below for proper
conversion number.

Table 3.2 Conversion Table

INPUT RANGE

CONVERSION NUMBER

0 ~ 100 mV

10000 / (100 x 1) = 100 cts/mV

0 ~ 1 V

10000 / (1000 x 1) = 10 cts/mV

0 ~ 10 V

10000 / (1000 x 10) = 1 cts/mV

0 ~ 20 mA

10000 / (20 x 1) = 500 cts/mV

Multiplier determined by the Input Resolution setting (

RESO in the INPT

Menu). See Table 3.2 below for proper multiplier.

Table 3.3 Input Resolution Multiplier

INPUT RANGERE

SOLUTION

LOW

HIGH

0 ~ 100 mV

1.0

10.0

0 ~ 1 V

1.0

10.0

0 ~ 10 V

1.0

10.0

0 ~ 20 mA

1.0

10.0

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