Instruction manual

NGA 2000 MLT Hardware
TECHNICAL DESCRIPTION
1 - 24
Emerson Process Management GmbH & Co. OHG
Instruction Manual
90002929
01/2007
MLT3 (GAS PURITY MEASUREMENT)
Fig. 1-22b: MLT 3 (example for gas purity measurement), Rear view
1.6.2 MLT 3HT (high temperature measurement)
As a special versions MLT 3HT is available for measurements requiring physics thermostated
up to 120 °C. The physical section is parted in a HT part (special heating and isolation) for all
components being in contact with sample gas - SS tubing, fine dust/safety filter, needle valve,
calibration valve (depending on options). The isolation (filter) cell, chopper & detector are
outside of the heated room together with a temperature controller and ventilator. The heated
line and external pump (with heated head) need isolation at any connection/ fitting:
Heated Section
with
SS tubing,
safety filter,
sample gas cell
Isolation cell,
chopper &
detector
Fig. 1-23: MLT 3HT (example for high temperature measurement), Top/ front view
Temperature Controller/ Ventilator (outlet filter)
Gas inlet/ outlet fittings
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
Zero gas
Sample gas