Models ER-420-AC, ER-420-DC & ER-420-LP
Details of Setup Functions
1 – TOTAL
MEASUREMENT UNIT
11
SETUP 11 determines the measurement unit for total, accumulated total and pulse output. The
options are: L, m
3
, kg, lb, GAL, USGAL, bbl, __ (no unit).
Alteration of the measurement unit will have consequences for operator and setup level values.
Please note that the K-factor has to be adapted as well; the calculation is not done automatically.
DECIMALS
12
The decimal point determines the number of digits following the decimal point for total,
accumulated total and pulse output.
The options are: 0000000, 111111.1, 22222.22, 3333.333
OTE:N Setup 15 offers a multiplication factor. If the volume measured is very high it is advised to
use the multiplication factor and to select 0000000 decimals for SETUP 12.
K-FACTOR
13
With the K-factor, the flowmeter pulse signals are converted to a quantity. The K-factor is based on
the number of pulses generated by the flowmeter per selected measurement unit (SETUP 11), for
example per cubic meter. The more accurate the K-factor, the more accurate the functioning of the
system will be.
Example 1: Calculating the K-factor
Let us assume that the flowmeter generates 2.4813 pulses per liter and the selected unit is "cubic
meters / m
3
". A cubic meter consists of 1000 parts of one liter which implies 2481.3 pulses per m
3
. So,
the K-factor is 2481.3. Enter for SETUP 13: "2481300" and for SETUP 14: decimals K-factor "3"
Example 2: Calculating the K-factor
Let us assume that the flowmeter generates 6.5231 pulses per gallon and the selected measurement
unit is gallons. So, the K-factor is 6.5231. Enter for SETUP 13: "6523100" and for SETUP 14 decimals
K-factor "6"
DECIMALS K-FACTOR
14
This setting determines the number of decimals for the K-factor entered. (SETUP 13). You can select
from 0 to 6 decimals:
This setting indirectly influences the accuracy of the K-factor (that is, the position of the decimal
point and thus the value given). This setting has NO influence on the displayed number of digits for
total (SETUP 12)!
MULTIPLICATION
FACTOR
15
In applications where very large volumes are measured, it is desired to use a multiplication factor for
the displayed totalizers. This to avoid a fast “turning to zero”. The ER-420 will divide the real totalized
volume with this factor and display the result. Following multiple factors can be selected and will be
displayed for the Operator.
The options are: x1, x10, x100, x1000, x10000
For the Operator, the valid factor is displayed after pressing SELECT twice. This factor does not
influence the flow rate.
THIS MULTIPLICATION FACTOR APPLIES ALSO ON PULSE AND OUTPUT SETUP 72.
Page 14 March 2013
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