FW_F126PELTP_v1702_02_EN
Page 12
3.1.3.
EXPLANATION OF SETUP MENU 1 - TOTAL
UNIT
11
This setting is used to select the engineering unit for the indication of the total,
the accumulated total and the pulse output.
When you change the engineering unit, you must recalculate and
reprogram the K-factor for the (accumulated) total. When you
recalculate and reprogram the K-Factor, the history for
(accumulated) total is not correct anymore, because the
(accumulated) total is not recalculated. For future reference, best
practice is to make a note of the accumulated total before you
program the recalculated K-Factor.
DECIMALS
12
This setting is used to set the amount of digits behind the decimal point for the
(accumulated) total indication.
K-FACTOR
13
This setting is used to set the K-Factor for the total. 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 engineering unit, for
example per m
3
. A more accurate K-Factor (more decimals, as set in decimals
K-Factor) allows for a more accurate operation of the system.
Example 1: Calculating the K-Factor.
The flowmeter generates 2.4813 pulses per liter and the selected unit is m
3
. A
cubic meter consists of 1000 liter which gives 2.4813 pulses*1000 liter=2481.3
pulses per m
3
. So, the K-Factor is 2481.3. Enter for the Flowmeter K-Factor:
24813 and for the flowmeter K-Factor decimals: 1.
Example 2: Calculating the K-Factor.
The flowmeter generates 6.5231 pulses per gallon and the selected engineering
unit is gallons. So, the K-Factor is 6.5231. Enter for the Flowmeter K-Factor:
65231 and for the Flowmeter K-Factor decimals: 4.
When you recalculate and reprogram a new K-Factor, the history for
(accumulated) total is not correct anymore, because the
(accumulated) total is not recalculated. For future reference, best
practice is to make a note of the accumulated total before you
program the recalculated K-Factor.
DECIMALS K-FACTOR
14
This setting is used to set the amount of digits behind the decimal point for the
K-Factor.
3.1.4.
EXPLANATION OF SETUP MENU 2 - FLOW RATE
The settings for total and flow rate are entirely separate. In this way, different engineering units can
be used for each e.g. cubic meters for total and liters for flow rate.
UNIT
21
This setting is used to select the engineering unit for the indication of the flow
rate.
Alteration of the engineering unit will have consequences for
operator and setup values, they will not be automatically
recalculated to the value of the new selected unit. The K-Factor has
to be adapted as well; the calculation is not done automatically.
TIME
22
This setting is used to set the time unit for the flow rate calculation. Note that the
flow rate is given in engineering unit/time unit, e.g. liters/minute (l/min).
When you change this setting, also recalculate and change the settings
for the analog rate-min and analog rate-max.
DECIMALS
23
This setting is used to set the amount of digits behind the decimal point for the
flow rate indication.
K-FACTOR
24
This setting is used to set the K-Factor for the flow rate. 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 engineering unit, for
example per m
3
. A more accurate K-Factor (more decimals, as set in decimals
K-Factor) allows for a more accurate operation of the system.
DECIMALS K-FACTOR
25
This setting is used to set the amount of digits behind the decimal point for the
K-Factor.
