Campbell-scientific CVS4200 / BVS4300 Stationary Samplers Manual de usuario descargar pdf (Pagina 31)

CVS4200 / BVS4300 Stationary Samplers

TABLE 6-4. Controller Specifications

SAMPLE

INITIATION

Disabled No sample initiation.

Interval Time Adjustable up to 999 hours, 99 minutes.

Pulse Count Adjustable, up to 9,999,999.

4-20mA Adjustable, up to 9,999,999 (4 to 20 mA = 0 to 100 pulses/min).

External Contact Momentary, 25 ms dry contact closure.

PROGRAM TYPE

Composite Terminate after up to 9,999,999 samples.

Multi-Composite Adjustable, up to 99 cycles per bottle.

Consecutive Adjustable, up to 9 bottles per cycle.

Daily Cycle Adjustable, up to 9 bottles per day.

Timed Step Adjustable, up to 99 hours, 99 minutes per step.

CLOCK

Real Time Clock Real time operating system.

PINCH VALVE

Sample release Adjustable, normally open / normally closed.

PURGE CYCLE

Draw and purge time Adjustable, 1 to 99 seconds.

SUCTION CYCLE

Variable

Adjusts automatically to double the value of the purge time

setting or until liquid contacts level electrode in metering

chamber.

Vacuum

System pressure range is –14 to +20 psi, which can be shown

on the Optional Pressure Gauge.

ALARM OUTPUTS

Independent Container Full (Latched. Any key resets. NPN*)

Sample Fault (Latched. Any key resets. NPN*)

Cycle Abandoned (Pulsed. NPN*)

*NPN (sinking) – see Technical Appendix for details.

STATUS OUTPUTS

Independent Sample Taken (DC relay driver, sinking)

DIRECT

FUNCTION KEYS

Manual Sample

Samples manually when pressed twice. Does not interrupt

program.

Manual Purge Purges system during second press as long as button is pressed.

Manual Bottle

Advance

Moves distributor arm to next bottle.

Restart Re-initiates program when pressed twice.

AVAILABLE

DISPLAYS

Real-Time Clock

Process Timing Elapsed, remaining.

Process Totals

Pulse Counting Internal/external.

Event Response With time stamp.

Multi-Level

Descriptions

Flashing Text

AUTOMATIC

DISPLAYS

Container Full Sample program complete.

Fault Program not completed.

Power Interrupt –

Program Resumed

Alternating Time

Stamp

Cycle(s) Abandoned

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 91 92

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Campbell-scientific CVS4200 / BVS4300 Stationary Samplers Manual de usuario Pagina 31

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