2 create a sampler program, 1 tips and techniques, Sampler operation 4.4.2 create a sampler program – Hach-Lange SIGMA SD900 Refrigerated Sampler and All Weather Refrigerated Sampler User Manual User Manual

Page 49

Sampler operation

4.4.2 Create a sampler program

Create a sampler program to set up the sampler for automatic
sampling routines.

Procedure:

1. Select

PROGRAM SETUP

from the main menu.

2. Select

MODIFY ALL

. The first parameter, bottle quantity, will be

shown.

3. Select the number of bottles in the sampler. The next

parameter, bottle volume, will be shown.

4. Enter the volume of the individual bottle(s). Use the

LEFT AND

RIGHT

ARROW

keys to move the cursor left or right. Use the

AND DOWN

ARROW

keys to change the value. Change the

units if necessary (gal or mL) with the arrow keys.

5. Continue to select or enter values for each parameter until

complete. Refer to

Table 3 on page 46

for a complete list of all

available options for a basic sample program.

4.4.2.1 Tips and techniques

Refer to

Table 4

and

Figure 27

for help with sample programming.

Table 4 Tips and techniques for the basic sampling program

Parameter

Tips and techniques

Bottle quantity

When 1 bottle is selected, the full bottle shut-off device is enabled and the distributor
is disabled. When more than 1 bottle is selected, the distributor diagnostic
is enabled.

Intake tubing

The sampler uses the intake tubing information to determine sample volume. If the
intake tubing information is not accurate, the sample volume will not be accurate.

Program delay

If the program delay is set to counts and sample pacing is set to time, the program
delay will be disabled.

Sample pacing—flow

Each time a sample is collected based on flow counts, the override timer is reset.

Sample distribution

If the bottle quantity is 1, the sample distribution option will not be available.
See

Figure 27

for a description of samples per bottle vs. bottles per sample.

Bottles per sample—use bottles per sample when the sample volume is larger than
one bottle can hold.
Samples per bottle—the distributor arm will not advance to the next bottle until the
specified number of samples has been delivered to the current bottle.

Liquid sensor

If the liquid sensor is disabled, the sample volume must be calibrated manually.

Sample volume

The sample volume must be entered as mL (1 gal = 3785.4 mL).

Make sure that

the sample volume does not exceed the bottle volume. Sample volumes are

rounded to the nearest 10 mL.