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Series 4060 Operation
Teledyne Analytical Instruments 55
4.6.10 The Range Function
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-> Range Select: Man
Man Rng: R1
R1: 0-100.00ppb
R2: 0- 1.00ppm
R3: 0- 10.00ppm
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The value of the upper limit of the currently selected range (AUTO
or MANUAL) affects the voltage and current of the analog outputs on
the rear of the analyzer as well as contact closures indicating which
range is current. The analog outputs from the 50 –pin Equipment
connector (see Section 3.3.2.4 and Table 3-1) represent the proportion of
the analysis concentration to the currently selected range limit.
MANUAL/AUTO RANGE SELECT: In Manual Range Select, the
range indicated on the second line 'Man Rng:' is maintained as the
current range of operation. In Auto Range select, the software
determines the smallest range whose limit is larger than the analysis
concentration. Automatic Range selection in Auto Range is governed
by hysteresis such that the concentration must fall below 90% of the
limit of the next smaller range before the current range will be set to the
lower range.
RANGE LIMITS: Ranges may be set as low as 100.0 ppb and as high
as 100.0 ppm. Range 3 can only be set at a value greater than Range 2.
Range 2 can only be set at a value greater than Range 1.
4.6.11 Analog Output Adjustment
The software in this instrument provides a way to enter to manage
the analog output of the analyzer. To access the offset function:
<UP/DOWN >From the MAIN MENU, scroll to the ANALOG
ADJUST function using the UP/DOWN keys.
<Enter> Pressing <Enter> activates the function and takes you to
the next screen.