Installation & Operation Manual
2 – FLOW RATE
The settings for
Total
and
Flow Rate
are entirely separate In this way, different units of measurement can be used, e g USGAL
for
Total
and barrels for
Flow Rate
The display update time for
Flow Rate
is one sec or more
OTEE:
N
These settings also influence the analog output
MEASUREMENT UNIT
21
SETUP 21 determines the measurement unit for flow rate
The options are:
mL, L, m
3
, mg, g, kg, ton, GAL, bbl, lb, cf, REV, no unit, scf, Nm
3
, NL, P, MGAL
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
TIME UNIT
22
The flow rate can be calculated per sec (SEC), minute (MIN), hour (HR) or day (DAY)
DECIMALS
23
This setting determines for flow rate the number of digits following the decimal point
The options are:
00000, 1111 1, 2222 22, 3333 333
K-FACTOR
24
With the K-factor, the flowmeter pulse signals are converted to a flow rate The K-factor is based on
the number of pulses generated by the flowmeter per selected measurement unit (SETUP 21), for
example per liter The more accurate the K-factor, the more accurate the functioning of the system
will be For examples read SETUP 13
DECIMALS K-FACTOR
25
This setting determines the number of decimals for the K-factor (SETUP 24) The options are:
0, 1, 2, 3, 4, 5, 6
This SETUP indirectly influences the accuracy of the K-factor This setting has NO influence on the
displayed number of digits for flow rate (SETUP 23)!
CALCULATION
26
The flow rate is calculated by measuring the time between a number of pulses, for example 10
pulses The more pulses the more accurate the flow rate will be The maximum value is 255 pulses
NOTESE:
•
This setting does influence the update time for the analog output directly (maximum update
10 times a sec) If the output response is too slow, decrease the number of pulses
•
For low frequency applications (below 10 Hz): do not program more than 10 pulses else the
update time will be very slow
•
For high frequency application (above 1 kHz) do program a value of 50 or more pulses
CUT-OFF TIME
27
With this setting, you determine a minimum flow requirement thresh-hold, if during this time less
than XXX-pulses (SETUP 26) are generated, the flow rate will be displayed as zero
The cut-off time has to be entered in secs
The maximum time is 999 secs (about 15 minutes)
3 – DISPLAY
FUNCTION
31
The large 17 mm digits can be set to display total or flow rate
When you select
Total
, both the total and the flow rate display simultaneously
When you select
Flow Rate
, only flow rate and its measuring unit display Press
Select
to display the total
4 – POWER MANAGEMENT (DOES NOT APPLY TO THIS UNIT)
Page 15
March 2013