55
When editing is complete, press the
function
button to leave the edit
mode. The setting will be validated and redisplayed. To re-edit, press and
hold the
set
button again. To move onto the next channel, press
select
.
The alarm appears on pin 10 of the
‘signal’ connector.
High Alarm
Operation of this function is identical to the Low Alarm function described
above.
Eltek Timed
This type of alarm includes high and low start values along with a delay
which can be enabled.
The delay is common to both the high and low level and must be a
multiple of the sample interval. If the alarm delay is 0 then no alarm delay
is used, and the alarm will trigger as soon as the alarm threshold (low
start or high start) is exceeded.
The logger checks for alarms at the sample interval, and the alarm is
triggered when the alarm is exceeded for the delay interval.
The logger must be logging for an alarm to be reported.
Meter
When metering, the display will show two asterisks when you are viewing
a channel that is currently in an alarm condition:
M E T E R c h 3 * *
3 7 . 5 ° C
This is helpful in finding the channel that is causing the alarm.
10.2 Wind Speed & Direction
Special circular averaging on EU range for wind direction.
10.2.1 Wind Direction
Squirrels with Wind Direction inputs have a specially configured EU range
on the last voltage channel. This is set to a hardware range of 0-5V dc
and will read 0° to 360° for this input. The direction is also displayed as N,
WSW, etc.
10.2.2 Averaging
A special averaging mode is implemented on the channel measuring wind
direction. When wind direction is being measured and the Log Mode is set
to Average then the logger will sample as normal at the scanning interval.
Each reading that is calculated from these samples is a true circular
