Hach 900 MAX, Instrument Manual

Page: 42 / 160

Page 40
Basic Programming Setup
8990startup.fm
Section 3
Step 4 - Program Delay
Note: If both Setpoint Sampling and
Program Delay are enabled, the
program delay is evaluated first,
prior to any checking for
setpoint conditions.
4-A. Enable or Disable Program Delay using the
CHANGE CHOICE
key.
Enabling the Program Delay will cause the sampling program to delay
starting until a user specified time and day of week are programmed.
4-B. After enabling the program delay, enter the time and day of week that
the program will begin. Use the soft keys to change the day of week as
well as the AM/PM indicator.
4-C. Press
ACCEPT
to continue with Sample Collection.
Step 5 - Sample Collection
5-A. Select the type of sample collection; Time Proportional,
Flow- Proportional Constant Volume, Variable Time (CVVT), or
Flow-Proportional Constant Time, Variable Volume (CTVV).
Timed-Proportional Sampling Intervals
When the program starts, a sample is taken immediately or delayed until after
the first interval has elapsed. Select either, Take First Sample Immediately or
After the First Interval.
Timed-Proportional samples are taken each time a user defined time interval
has elapsed. Samples can be continually taken at that interval until the
completion of the program.
a. From the Sample Collection menu, press
CHANGE CHOICE
until
Timed Proportional is displayed. Press
ACCEPT
to continue.
11:00 AM 21 - APR - 01 PROGRAM DELAY
ACCEPT
START PROGRAM:
CHANGE
AM/PM
00:00 AM MON
CLEAR
ENTRY CLEAR
DAY
(USE THE NUMERIC KEYPAD)
11:00 AM 21 - APR - 01 SAMPLE COLLECTION
ACCEPT
SAMPLE COLLECTION
CHANGE
CHOICE
_______________
BACKUP
CHOICES: TIMED, FLOW PROPORTIONAL
11:00 AM 21 - APR - 01 SAMPLE COLLECTION
ACCEPT
SAMPLE COLLECTION
CHANGE
CHOICE
TIMED PROPORTIONAL
BACKUP
CHOICES: TIMED, FLOW PROPORTIONAL