Span Cal - Teledyne 2000RS Operating Instructions Manual

Operation
The range of either the coarse or the fine adjustment are from 1 to
65535 as shown on screen above.
Alternatively, repeatedly pressing one of the arrow heads at either
side of the Zero Adj. value makes the numeric value quickly jump from
single digit to x10, x100 until the zero adjustment reaches one of the
range limits.
In coarse adjustment, Press Enter when ADC value is as close to 0
as coarse adjustment will allow. Then screen will switch to Fine
adjustment. Repeat adjustment till the ADC value is near zero within
1000 counts (the window around zero value of acceptability for ADC
counts in fine adjustment is wider than coarse adjustment). Press Enter
and let the unit read the offsets for each gain.
Once the calibration is completed, if user didn't press back arrow
within 30 second firmware will automatically move to the main screen.

4.8.2 Span Cal

The Span button on the Menu screen is used to span calibrate the
analyzer. Span calibration can be performed using the automatic mode,
where an internal algorithm compares consecutive readings from the
sensor to determine when the output matches the span gas concentration.
Span calibration can also be performed in manual mode, where the
operator determines when the span concentration reading is acceptable
and manually exits the function. Make sure the appropriate span gas
source is connected to the analyzer. See Section 3.4.
Teledyne Analytical Instruments
2000RS
92