Hach SIGMA 900, User Manual

Page: 41 / 94

Section 5
Page 41
8837prg.fm
Setting the Time and Date
5.6 Setting the Time and Date
After programming the sampler for the first time you will be prompted to enter
the time and date.
1. Check the real-time clock and date settings by pressing the
TIME/READ
key. The display will show the time and date for several seconds:
10:35 AM 24OCT00
2. If the time or date are not correct, press the
TIME/SET
key. The time and
date will appear on the display, with the hour flashing.
3. Press the appropriate numerical key(s) for the correct hour. When the
correct hour flashes on the display, press the
YES
key. This will cause the
minutes to flash on the display.
4. Using the same procedure, select the correct minutes and press the
YES
key. The am/pm indicator will flash.
13h TRY AGAIN?
Press the
YES
key to initiate another sample cycle, if the
STOP PUMP
key was pressed
before or after the desired volume was obtained. If you press the
NO
key, the message
in item 14 will appear.
14 INTAKE RINSE?
This message will appear after you enter the volume delivered to the graduated
cylinder (in Auto Calibrate mode) and/or after you press the
NO
key in response to the
message in item 13h.
An intake rinse consists of a pre-purge, drawing liquid from the sample source to the
pump, and a post-purge. In other words, liquid from the sample source is used to rinse
the intake tubing before a sample is taken. If you press the
YES
key, the display will
show the next message. If the Auto Calibrate mode is on, pressing the
NO
key will
cause item 15 to appear. If the Timed Calibrate mode is on, pressing the
NO
key will
cause item 16 to appear.
14a RINSE CYCLES = _ Enter the number of rinse cycles (up to 3).
14b
TIMED RINSE,
READY TO PUMP?
See items 14c and 14d.
14c NA
After pressing the
YES
key in item 14b, the pump will pre-purge the intake line and
begin drawing liquid from the sample source to the pump. Press the
STOP PUMP
key the
moment the liquid reaches the liquid sensor. The pump will then reverse direction and
purge the intake tubing. The sampler will hold the time required to rinse the intake line
in memory.
14d TRY AGAIN?
If you pressed the
STOP PUMP
key before or after the desired rinse time, press the
YES
key to initiate another rinse cycle. Press the
NO
key to view item 16.
15 INTAKE FAULTS?
This message appears after the number of rinse cycles has been entered, or after you
press the
NO
key in item 14. The sampler can automatically initiate another sample
cycle (up to 3) if a sample is not obtained upon the first attempt. Press the
YES
key to
prompt the next message. Press the
NO
key to view item 16.
This programming step does not appear if using the Timed Calibrate procedure for
sample volume calibration.
15a INTAKE FAULTS = _ Enter the number of intake faults (up to 3).
16
SETUP COMPLETE,
READY TO START
This message indicates that all programming steps have been completed. Press the
START PROGRAM
key to begin. The display will read
PROGRAM RUNNING
. To review the
program operating status, press the
DISPLAY FEEDBACK
key.
When you press the
START PROGRAM
key, all recorded data are erased from memory.
Always download recorded data before pressing
START PROGRAM
key.
Item
Number
Message Description of Message