Hach EC1000, Instruction Manual

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2.2 Setup Menu
2.2.1 Alarms
Two independent programmable setpoint alarms are provided. Each alarm can be set to
operate on pH, mV, or temperature setpoints, and may be programmable to be either a high
alarm or a low alarm. When the programmed setpoints are exceeded, the alarm LED turns
on. The alarm relay actuates when external power is brought to the relays. The instrument
also features programmable alarm hysteresis and delay time. Hysteresis is the difference
between the alarm turn on and turn off values. The delay time provides a delay, from the
time the alarm setpoint is exceeded, before the alarm is actuated.
The delay time is adjustable from 0 to 30 seconds.
To check or program the alarm settings:
Press
SETUP
to call up the SETUP menu options.
Press
ENTER
to move into the
ALARMS
submenu.
Press
ENTER
to move into the
ALARM1
submenu.
The MODE menu is PH high/low, mV high/low, or temperature high/low.
Press
ENTER
to select the MODE menu.
PH HI is the default. Scroll through the MODE menu by pressing the
DOWN ARROW
or
UP ARROW
key.
When the desired mode is displayed, press
ENTER
to lock in the chosen MODE and move
to the next ALARM1 submenu.
Press
ENTER
. The current SET PoiNT value appears on the display.
To change the value, move the flashing display by pressing the
RIGHT ARROW
key
and increase or decrease the value by pressing the
DOWN ARROW
key or the
UP ARROW
key.
When the value is set, press
ENTER
.
Press
ENTER
. The current HYSTeresis appears on the display.
The hysteresis is adjustable from 0.01 to 2.0 pH, 0.1 to 100 mV, or 0.1 to 2.0 °C.
To change the value, move the flashing display by pressing the
RIGHT ARROW
key and
increase or decrease the value by pressing the
DOWN
or
UP ARROW
key.
Press
ENTER
.
Press
ENTER
. The current DeLaY TIME will appear on the display. The ALARM1 delay
time is adjustable from 0 to 30 seconds. Reset the delay time by pressing the
RIGHT
ARROW
key and increase or decrease the value by pressing the
DOWN ARROW
key or
the
UP ARROW
key.