HF scientific Oil Content Monitor - Manual (Page 19)

OCM Rev. 3.9 (1/03) 13
5. Replace the cleanout plug.
6. Press the
↵ ↵↵ ↵
key to initiate the calibration on 15 PPM water. The word CAL
will appear on the upper row of the LCD display and the word NO will appear
on the lower row of the LCD display.
7. This is the final step for calibration at the 15 PPM level; if you wish to exit
without calibrating simply press the
↵ ↵↵ ↵
button. However, if you are satisfied
and wish to complete calibration on the 15 PPM level use the
tu
arrows to
select the word YES on the lower row of the display and then press the
↵ ↵↵ ↵
button to initiate calibration.
8. Pressing the
↵ ↵↵ ↵
button will complete calibration. The system will automatically
return to the AUTO mode
Notes: If you wish to exit the calibration mode you may do so at any time, prior to
initiating a calibration, by simply pressing the MODE key.
It is normal for the system to count up to and display 13-17 PPM, in the AUTO
mode, immediately following the 15 PPM calibration as the calibration solution is
still in the sample tube.
7.2 Zero Adjust (0 ADJ) Calibration
In certain instances, the oil free water (seawater) leaving the bilge has different scattering
characteristics than the clear water used for calibration. The OCM has been designed to
allow for you to account for this variation by adjusting the zero calibration with your oil
free water. Follow the steps below for this calibration procedure:
1. Ensure that there is a good flow of oil-free sample to the OCM.
2. Press the MODE key once to enter the zero adjust calibration mode. The “CAL”
block will be illuminated on the display with “0 ADJ” shown on the display (see