Sulfur analysis with the UVFD 5000, MPO 5000
multi EA 5000
70
To determine the sulfur content without interference from simultaneous increased ni-
trogen content the patented MPO (microplasma optimization) technology has been de-
veloped. The MPO technology removes the interfering nitrogen monoxide from the
measuring gas. This important, for example, during analysis of diesel fuels containing
cetane improvers.
The detection module is available with and without the MPO option. The MPO option is
not suited for multi-element methods that determine multiple elements simultaneously.
It can be switched on and off as needed via the control and analysis software.
Working with a method with the active MPO requires calibration performed with the
MPO active. Otherwise the measurement results will be too low. Conversely, use of cali-
bration with an active MPO for a method with no MPO can lead to false measurement
results that are too high.
9.1.3
Connection
The equipment door at the front is closed tightly and cannot be opened. An LED is in-
stalled on the door. The LED flashes during the run-in period of the detection module
and lights up permanently when the module is operational.
The device switch for switching the module on and off is located on the top right of the
rear of the device (when viewed from the front). The device fuse and power connection
are located beneath it.
Communication with the basic module is performed via a 9 pin interface cable. The in-
terface is labeled "S-UVF".
The hose for the measuring gas coming from the basic module is connected to the "sam-
ple in" gas inlet. The gas outlet is labeled "sample out".
The "Service" interface and the programming button are only required for service pur-
poses.
