WATERS CORPORATION 2424, Руководство оператора

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Preparing to start a run 3-15
Preparing to start a run
You must set up the detector before you can start a run to make light
scattering measurements with a detector. To start a run, you can press
Run/Stop or trigger the detector by means of the inject start terminals on the
rear panel. When you start a run, the detector performs an auto zero function
(if enabled).
Tip:
The auto zero on inject function must be enabled (default) for the detector
to perform an auto zero.
Primary and secondary functions
Access the primary and secondary functions via the Home screen or by
pressing Next.
Gain – Controls the full-scale sensitivity of the detector by defining the gain
factor from 1 to 1000. Each gain setting has a linear relationship with the
actual light scattering signal.
Gas pressure – Gas pressure is controlled at the nebulizer by a pressure
regulator. This function monitors the condition of gas flow through the
nebulizer. For the high-flow and low-flow nebulizers, the maximum gas
pressure is 410 kPa (4.1 bar, 60 psi).
Filter time constant – Allows you to adjust the noise filter (time constant) to
achieve the optimum signal-to-noise ratio.
Caution:
Changing the sensitivity (LSU-FS) setting affects only the 2-V
output. The digital output at the Ethernet connector remains
unchanged.
Primary and secondary function (method) parameters
Function Units Range Default
Data rate Hz 10, 20, 40, or 80 Hz 10 Hz
Gain 0 to 1000 0
Filter time
constant
sec 0 to 5.0 sec 1.0 sec
Sample
full-scale
LSU 0.1 to 2000.0 LSU 2000 LSU