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3-6 5000 Multi Point Moisture Analyzer

CAUTION

Analyzer Start-Up

Sample Switching Overview

Back pressure and flow rates for each sample point must be adjusted at initial analyzer

start-up. The following information is presented to assist the operator in determining

which sample point gas is flowing through the analyzer at any given time.The 5000

Multi-Point Controller has been factory configured to run the sample-switching routine

shown in Table II at start-up. Note that one complete cycle is always equal to the sample

measurement period plus the reference measurement period. Some 5000 systems use a

complete cycle of 60 seconds (30 seconds sample/30 seconds reference). For systems with

asymetric timing, refer to the values of Prg_Ref_Timer (ID# PR) and Prg_Meas_Timer

(ID# PM) found on the configuration data sheet supplied with the analyzer.

Table II: Factory Default Sample Switching Routine

Default Value Typical Duration

Event System Variable (Cycles) (Seconds)

Equilibration EquilCycl_1 1 60

Sample point 1 measurement SamplCycl_1 3 180

Equilibration EquilCycl_2 1 60

Sample point 2 measurement SamplCycl_2 3 180

Equilibration EquilCycl_3 1 60

Sample point 3 measurement SamplCycl_3 3 180

Equilibration EquilCycl_4 1 60

Sample point 4 measurement SamplCycl_4 3 180

REPEAT

Thus, the controller will switch sample streams in numerical order approximately every

240 seconds (4 minutes). In addition, the current sample point number is shown on

the first and second lines of the controller display. The number of complete cycles for

each event is fully programmable; refer to page 4-3: Timing for more information on

altering the timing variables.

Initial Flow Rate and Back Pressure Adjustments

Do not cap off or block the exhaust line; doing so will apply full line pressure across

the back pressure gauge and may permanently damage the gauge and possibly the

field unit. Ensure that analyzer exhaust is vented appropriately.

1. Apply power to the controller and field unit. Boot up information will be displayed mo-

mentarily then the default normal operation screen (Figure 10) will be displayed.

2. Turn the adjusting screw counterclockwise to fully open the back pressure regulator control

(4). This is necessary to ensure that there is no pressure in the field unit when the sample

gas is first applied. Note the pressure indicated on the back pressure gauge (6).

Ametek 5000 Instrument Manual

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