Teledyne 2750 - Portable turbine generator gas analzyer - Manual (Page 29)

Turbine Generator Gas Analyzer Installation
Teledyne Analytical Instruments 29
11. Adjust the display to read 100% ±0.1% using the H2/Air span
trimpot. See Figure 3-13
Figure 3-13: H2/AIR Span Trimpot
Please note that while the operating range of the analyzer is 80-100% H2
in Air, the electronics of the 2750 have been configured to allow for the
use of 100% H2 span gas to calibrate this range to reduce the number of
calibration gases that are required.
The analyzer is now fully calibrated and ready for service.