Teledyne 6600 - Manual (Page 49)

Oil in Water Analyzer Operation 3
Part I 3-25 Teledyne Analytical Instruments
3.6.1 Manual (Select/Define Range) Screen
The Manual range-switching mode allows you to select a single, fixed
analysis range. It then allows you to redefine the upper and lower limits, for the
range.
Enter the Range function to start the Range function.
Select range
mode: MANUAL
If above screen displays, use the UP/DOWN switch to Select MANUAL,
and Enter.
Select range to run
—> Ш1 Ш2 Ш3 <—
NOTE: Oil in Water applications require single range (01) measurement.
Use the UP/DOWN switch to select the range: 01, 02, 03, or 04. Then
Enter .
Gas use: OIL
Range: Ø — 100 ppm
The high-end of the range field should blink first. Use UP/DOWN switch
to change the value of the field, Enter to move to the low-end of the range field.
Escape to return to the previous screen to select or define another range.
Enter to return the to the Analyze function.
3.6.2 Auto Screen
Autoranging will automatically set to the application that has at least two
ranges setup with the same gases.
In the autoranging mode, the microprocessor automatically responds to
concentration changes by switching ranges for optimum readout sensitivity. If the
upper limit of the operating range is reached, the instrument automatically shifts
to the next higher range. If the concentration falls to below 85% of full scale of
the next lower range, the instrument switches to the lower range. A correspond-
ing shift in the DC concentration output, and in the range ID outputs, will be
noticed.
The autoranging feature can be overridden so that analog output stays on a
fixed range regardless of the contaminant concentration detected. If the conce-