Instruction manual

NGA 2000 MLT Hardware
INSTALLATION
5 - 5
Emerson Process Management GmbH & Co. OHG
Instruction Manual
90002929
07/2006
5.2.1 Fine Dust Filter (Option MLT 3)
MLT 3 can have two built-in fine dust filters (filter material PTFE, pore-size approx. 2 µm) optional.
5.2.2 Gas Sampling Pump (Option MLT 3)
Optional MLT 3 can be equipped with a gas sampling pump (pumping rate max. 2.5 l/min.).
Note!
For mobile application of MLT only !
Lifetime max. 5,000 running hours !
5.2.3 Pressure Sensor (Option)
It is possible to integrate a pressure sensor with a range of 800 - 1100 hPa.
The concentration values computed by the analyzer will then be corrected to reflect the barometric
pressure to eliminate faulty measurements due to changes in barometric pressure (see technical
data).
5.2.4 Gas Flow
The gas flow rate should be within the range 0.2 l/min to maxi. 1.5 l/min !
A constant flow rate of about 1 l/min is recommended.
The gas flow rate for MLT with paramagnetic oxygen sensor (PO
2
),
trace electrochemical oxygen sensor (TEO
2
) and for MLT 2 analyzers used
in hazardous area (Ex zones) is allowed to max. 1.0 l/min !
It is possible to integrate a flow sensor with a range 0 - 2 l/min ( 0.2 l/min to maxi. 1.5 l/min
recommended) ! In this case gas flow can be shown via operation front panel.
For MLT 3 flow control can be done with a screw driver via a optional integrated throttle into the
optional built-in dust filter.
GAS CONDITIONING (SAMPLE HANDLING)