HF scientific Oil Content Monitor - Manual (Page 15)

OCM Rev. 3.9 (1/03) 9
The current selected number of seconds will be shown. You can select the desired 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.
Note: A system alarm will activate when an internal system failure occurs. Please note
that the user settable relays are failsafe in that they will activate if an internal
system failure or power loss occurs.
6.2 Setting 4-20mA Output
The output (O/P) selection allows you to turn the 4 – 20 mA analog output on, or off.
You can select the desired analog output operation using the
t and u keys. Once you
have set the desired operation, press the
↵
key to accept it.
If you selected to turn the 4-20 mA output on, you will be prompted to set the upper and
lower oil content levels corresponding to the 4 mA and 20 mA output levels. First, you
will be prompted with the oil content level assigned to the 4 mA output level (OLV on
the lower row of the LCD display). Select the oil content level you wish to assign to the
OLV using the
t and u keys. Once you have set the desired level, press the ↵
key to
accept it.
Next, you will be prompted with the oil content level assigned to the 20 mA output level
(OHV on the lower row of the LCD display). Select the oil content level you wish to
assign to the OHV using the
t and u keys. Once you have set the desired level, press
the
↵
key to accept it. At this point you will be prompted to set up the security access
6.3 Selecting the Security Access Option
The OCM is equipped with a security access option. If this option is turned on, the user
must be able to input the correct access code for feature. The security key will be
highlighted on this display at this time and the lower row the mode they wish to enter.