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concentration exceeds the upper limit of the range, the DC output will saturate at 1 V dc (20 mA at the current output).
However, the digital readout and the
The automatic air calibration range is always
4.7.1 Setting the Analog Output Ranges
To set the ranges, enter the range function mode by pressing the
Range button on the front panel.
Use the < > arrow keys to blink the range to be set: low (L), medium (M), or high (H).
Use the Δ∇ arrow keys to enter the upper value of the range (all ranges begin at 0 ppm). Repeat for each range you want to set. Press Enter to accept the values and return to Analyze mode. (See note below.)
Note: The ranges must be increasing from low to high, for example, if range 1 is set as
Ranges, alarms, and spans are always set in ppm units (over the entire
4.7.2 Fixed Range Analysis
The autoranging mode of the instrument can be overridden, forcing the analyzer DC outputs to stay in a single predetermined range.
To switch from autoranging to fixed range analysis, enter the range function by pressing the Range button on the front panel.
Use the < > arrow keys to move the blinking over AUTO.
Use the Δ∇ arrow keys to switch from AUTO to FX/LO, FX/MED, or FX/HI to set the instrument on the desired fixed range (low, medium, or high).
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