Emerson NGA2000 PMD Benutzerhandbuch
Instruction Manual
760007-A
July 2003
July 2003
1-2 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 PMD
1-4 FEATURES
Among the features incorporated into the
PMD Analyzer Module is a flow splitter (
PMD Analyzer Module is a flow splitter (
≈2:1)
that allows for greater sample flow, decreased
lag time and faster analyzer response.
lag time and faster analyzer response.
The "Time Alignment" feature can be used to
delay sending the Primary Variable from the
PMD Analyzer Module for up to 30 seconds in
0.1 second intervals. This feature allows Pri-
mary Variables form more than one PMD
Analyzer Module to be "time aligned" if nec-
essary.
delay sending the Primary Variable from the
PMD Analyzer Module for up to 30 seconds in
0.1 second intervals. This feature allows Pri-
mary Variables form more than one PMD
Analyzer Module to be "time aligned" if nec-
essary.
Figure 1-2. Trace Oxygen Detector Coulometric Principle
SIGNAL CONDITIONING
ASSEMBLY
Dual Photocell
Displacement
Torque
Restoring
Torque
Torque
Magnet
Platinum/Nickel Alloy
Suspension Ribbon
Suspension Ribbon
Balancing
Weight
Weight
Balancing Weight
Nitrogen-Filled Hollow Glass
Test Body
Test Body
Mirror
Current Loop
TEST BODY DETAIL
Electromagnetic
Axis
Axis
Electromagnetic
Axis
Axis
Restoring
Current
Current
Restoring
Current
Displacement
Torque
Restoring
Torque
Torque
DETECTOR/MAGNET
ASSEMBLY
Test Body
Shaded Pole Pieces (4)
LED Source
Restoring
Current
Span
Zero
SIGNAL OUTPUT
TO NETWORK
TO NETWORK
NULL BALANCE SYSTEM