Page 136
Multi-Channel Pressure Calibration
Multi-Channel Sprint LCs are available with 2-4 test ports. They come in
either sequential (tests one port at a time) or concurrent (tests all ports at
the same time) models. Multi-channel calibration works much the same as
in a single channel Sprint LC. There are only a few special features and
differences that are noted here. Other than these differences, follow the
same procedures starting on page 138.
Single and Sequential Calibration
Sequential Sprint LCs have up to four ports but only have one pressure
transducer. They may also have a flow transducer. The calibration menu
looks and functions the same as in a single channel Sprint LC.
The calibration port in a sequential tester is port 1. When performing a
pressure calibration, air is sent out of the Sprint LC to supply a calibrated
standard for comparison to the sensor reading on the Sprint LC.
FIGURE 73
Back Reg+ Reg- Inc Dec
Pressure Calibration
Reading
Sensor 1.002 psig
Target 1.000 psig
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