HF124PEN_v0501_04
Page 17
5 - ALARM
With these settings, it is determined if and how the ratio will be monitored.
SET ALARM
51
This function determines if and how the ratio alarm values can be set:
Following can be selected:
Operate:
the values can be set at both Operator and SETUP-level.
Setup:
the values can be set at SETUP level only, but are visible
for
the
operator.
Hidden:
the ratio alarm values are not visible for the operator, only
the
alarm
warning.
Disable:
there is no ratio monitoring.
FLOW ZERO
52
When the flowrate of both flows is zero, then it is possible to ignore or
disable the ratio monitoring. The following settings can be selected:
DEFAULT:
in case of a low-ratio alarm and zero flow, it will switch the
alarm output and indicate the alarm on the display.
NO RELAY:
in case of a low-ratio alarm and zero flow, it won't switch
the alarm output but will indicate it on the display only.
IGNORE:
in case of a low-ratio alarm and zero flow the alarm will be
ignored.
ALARM VALUE
RATIO LOW
53
The low alarm is set as a % with this setting. An alarm will be generated
as long as the ratio lower as this value.
With value 0.0 this function is disabled.
ALARM VALUE
RATIO HIGH
54
The high alarm is set as a % with this setting. An alarm will be generated
as long as the ratio higher as this value.
With value 0.0 this function is disabled.
DELAY TIME ALARM
RATIO LOW
55
An alarm generated by SETUP 33 “low” can be ignored during X-time
period. If the actual ratio is still incorrect after this delay time, than an
alarm will be generated.
DELAY TIME ALARM
RATIO HIGH
56
An alarm generated by SETUP 34 “high” can be ignored during X-time
period. If the actual ratio is still incorrect after this delay time, than an
alarm will be generated.
6 - POWER MANAGEMENT
When used with the internal battery option, the user can expect reliable measurement over a long
period of time. The F124-P has several smart power management functions to extend the battery life
time significantly. Two of these functions can be set:
LCD NEW
61
The calculation of the display-information influences the power
consumption significantly. When the application does not require a fast
display update, it is
strongly advised
to select a slow refresh rate.
Please understand that NO information will be lost; every pulse will be
counted and the output signals will be generated in the normal way.
The following can be selected:
Fast - 1 sec - 3 sec - 15 sec - 30 sec - off.
Example: Battery
life-time
battery life-time with a coil pick-up, 1KHz. pulses and FAST
update: about 2 years.
battery life-time with a coil pick-up, 1KHz. pulses and 1 sec
update: about 5 years.
Note:
after a button has been pressed by the operator - the display
refresh rate will always switch to FAST for 30 seconds. When "OFF" is
selected, the display will be switched off after 30 seconds and will be
switched on as soon as a button has been pressed.
BATTERY-MODE
62
The unit has two modes: operational or shelf.
After "shelf" has been selected, the unit can be stored for several years; it
will not count pulses, the display is switched off but all settings and totals
are stored. In this mode, power consumption is extremely low.
To wake up the unit again, press the SELECT-key twice.