12
4 - ALARM
With these settings, it is determined how the flow rate will be monitored and the functionality of the transistor outputs be deter-
mined.
ALARM
4.1
Setting the function of the Alarm
The following settings can be selected:
Off:
Function disabled.
Operate:
Full function of the low flow alarm.
Hidden:
Does not display alarms on LCD.
ALARM VALUE
ZERO
4.2
The Zero alarm is set with this setting. An alarm will be generated as long as there is no flow rate.
Select Off to disable
ALARM VALUE
LOW
4.3
The low alarm is set with this setting. An alarm will be generated as long as the flow rate is lower
than this.
With value 0.0 this function is disabled.
ALARM VALUE
HIGH
4.4
The high alarm is set with this setting. An alarm will be generated as long as the flow rate is higher
than this.
With value 0.0 this function is disabled.
DELAY TIME ALARM
4.5
This function allows a delay period before the alarm is activated 0—99 seconds.
6 - ANALOG OUTPUT
A linear analog (0)4-20mA signal is generated according to the flow rate with a 10 bits resolution. The settings for flow rate
(SETUP - 2) influence the analog output directly.
The relationship between rate and analog output is set with the following functions:
MINIMUM FLOWRATE
6.1
Enter here the flowrate at which the output should generate the minimum signal (0/4mA or 0V) - in
most applications at flow rate "zero".
The number of decimals displayed depend upon SETUP 23.
The time and measuring units (L/min for example) are dependant upon SETUP 21 and 22 but are
not displayed.
MAXIMUM FLOWRATE
6.2
Enter here the flow rate at which the output should generate the maximum signal (20mA or 10V) -
in most applications at maximum flow.
The number of decimals displayed depend upon SETUP 23.
The time and measuring units (L/min for example) are dependant upon SETUP 21 and 22 but can
not be displayed.
TUNE MIN / 4MA
6.3
The initial minimum analog output value is 4mA . However, this value might differ slightly due to
external influences such as temperature for example. The 4mA value can be tuned precisely with
this setting.
Before tuning the signal, be sure that the analog signal is not being used for any
application!
After pressing PROG, the current will be about 4mA The current can be increased / decreased with
incrementing or decrementing the numbers and is directly active. Press ENTER to store the new
value.
Remark: the analog output value can be programmed “up-side-down” if desired, so 20mA at mini-
mum flowrate for example!
TUNE MAX / 20MA
6.4
The initial maximum analog output value is 20mA. However, this value might differ slightly due to
external influences such as temperature for example. The 20mA value can be tuned precisely with
this setting.
Before tuning the signal, be sure that the analog signal is not being used for any
application!
After pressing PROG, the current will be about 20mA. The current can be increased / decreased
with incrementing or decrementing the numbers and is directly active. Press ENTER to store the
new value.
Remark: the analog output value can be programmed “up-side-down” if desired, so 4mA at maxi-
mum flow rate for example!
FPD3100-D-A DIGITAL REGISTER
Set-up Functions
Summary of Contents for FPD3100
Page 9: ...9 NOTES ...
Page 15: ...15 FPD3100 D A DIGITAL REGISTER Parts Description ...
