Instruction manual

NGA 2000 MLT Hardware
INSTALLATION
5 - 22
Emerson Process Management GmbH & Co. OHG
Instruction Manual
90002929
07/2006
5.4.3.1 MLT 3 for gas purity measurement
The necessary gas connections are marked analyzer specific.
Different possibilities of internal layout and external tubing are shown in Fig. 1-24, depending on
instrument specific features.
Fig. 5-14: MLT 3 (gas purity measurement), Rear view
An constant input pressure (± 70 hPa or ±1 psig) between 1,500 to 3,000 hPa
(20 to 43 psig) is necessary for sample gas as well as for zero gas and span gas
because of internal pressure regulator.
a) Instrument with manual 4/2-way-valve
The connection of sample gas, zero gas and span gas will be done to the gas connections at the
rear side of the instrument (Fig. 5-14). The gases will be lead internally via stainless steel tubes
to the 4/2-way-valve (see Fig. 1-30c, too).
ANALYZER SPECIFIC INSTRUCTIONS: MLT 3
NETWORK
DIGITAL I/O
ANALOG I/O SERIAL I/O
!
230/120 V 50/60 Hz max. 240 VA
PCB “SIO” Gas connections
(analyzer specific)
Input 230/120 V ac
(PS UPS 01 T)
Solenoid Valve Block (Option)
Sub.-min. D, 9 pole
(connection to PCB “SIO”)
Sub.-min. D, 9 pole
(to Solenoid Valve Block Option)
Span gas
Exhaust
Sample gas
Zero gas