HF scientific Oil Content Monitor - Manual (Page 13)

OCM Rev. 3.9 (1/03) 7
6.0 Instrument Configuration (SETUP mode)
The OCM provides you the ability to customize your instrument according to your needs
at any time during normal operation. This section describes how you can customize your
instrument.
NOTE: To skip the selection of the SETUP mode, simply press the MODE key.
6.1 Configuring the Alarms
Enter the SETUP mode of the OCM by pressing the MODE key until SETUP is
illuminated. The level at which the alarm(s) will activate is called the set point. On the
OCM, the set point (S/P) can be set to either 5 or 15 ppm. The display will now indicate
that the set point (S/P) for both alarm 1 and alarm 2 are set to 15 PPM. Use the
tu
keys to select a set point of 5 or 15 ppm. Press the
↵
key to accept each selection and to
proceed to the next selection. Press
↵
now to set up the alarms.
You may set delay times for initiating and disabling the alarm. The delay times are used
to prevent relay chatter close to the alarm limit. The delay times are set at 0 seconds at
the factory. The operations of the delays are:
Delay On: Once an alarm condition is met, the process must remain in alarm
condition for at least the time selected for the Delay On time level. If the
delay on time level is set at 15 seconds and the alarm condition is met
continuously for only 10 seconds, the alarm will not be initiated. However, if
the alarm condition is met continuously for 15 seconds or more, the OCM will
indicate an alarm condition.
Delay Off: Likewise, once the process water leaves the alarm condition levels
it must remain out of the alarm condition for at least the time selected for the
Delay off time level. If the delay off time level is set to 10 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 10 seconds.
Otherwise, the OCM will still signal an alarm condition.
6.1.1 Programming Alarm 1
Alarm 1 Function: Alarm 1 is always active. This is the alarm that should be connected
to the re-circulation apparatus. This alarm will activate when the oil concentration
exceeds the set point longer than the “Delay On” time.
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.