HF scientific MicroTOL Online Turbidimeter old series- 0-1000 NTU - Manual (Page 26)

MICRO TOL (12/04)
Rev. 2.7 20
Delay Off: The turbidity level must not exceed the alarm set point continuously for at
least this number of seconds prior to deactivation of the alarm.
If the delay off time is set to 5 seconds and the process has exited out of the
alarm condition, the alarm will be reset only if the process is out of the alarm
condition for a continuous 5 seconds. Otherwise, the instrument will still
signal an alarm condition.
7.5.1 Alarm 1
Alarm 1 Function: The ALM1 is displayed and the display indicates the current
function of alarm 1 (HI, LO, or OFF). You can use the
toru buttons to cycle through
and select the desired function. Press the
↵ button to accept your selection.
If you selected to turn the alarm OFF, you will be immediately prompted to set up alarm
2 (go to section 7.5.2). If, on the other hand, you selected one of the other functionalities
you will be prompted to set the delay times.
Alarm 1 Set Point: You will be prompted to select the set point for this alarm; this is
indicated by “S/P” shown on the lower row of the display. You can select the desired
alarm level by using the
t and u buttons. Once you have set the desired set point, press
the
↵ button to accept it.
Alarm 1 Delay Times: Delay On: The following display will appear to allow you to
select the number of seconds currently set for the “delay on” time.
The current selected number of seconds will be shown. You can select the desired
number of seconds for the “delay on” time for this alarm using the
t and u buttons.
Once you have set the desired delay time, press the
↵ button to accept it.
Delay Off: Next, the following display will appear to allow you to select the number of
seconds currently set for the “delay off” time.