26
HOT KEYS
Three of the VIEW/EDIT PROGRAMS menu options are also
accessible via "Hot Keys" located on the control console
keypad. The keys are round, blue in color and labeled SAMP.
VOL., TIME, and DELAY START. These keys allow the operator
to access the sample volume, time between samples and
delay starting time for the program currently selected to run
without going through the menu.
HINT: To save the program setting you have just modified
using the HOT KEYS you must save the program or your
change will be lost.
CALIBRATING THE
SYSTEM
GENERAL
The Composite Samplers' non-volatile memory contains flow
data related to sample volume flow per pump head revolution
versus sample lift height. This information is used to calculate
the correct sample volume being taken by the system at a
specific lift height. Due to the number of variables and
variations possible with use of the Composite Sampler in the
field, the stated accuracy of the unit is achieved only when
the unit is calibrated at the field site after setup of the sampler
as it will be used.
MINIMUM SAMPLE SIZE
The stated accuracy of the sample volume being taken is
predicated on a minimum sample size versus the tubing size
used to take the sample.
For L/S
®
15 size tubing the minimum sample size for stated
calibrated sample accuracy is 167 milliliters.
For L/S
®
24 size tubing the minimum sample size for stated
calibrated sample accuracy is 270 milliliters.
REQUIRED EQUIPMENT
To calibrate the Composite Sampler you will need a graduated
cylinder with a minimum volume of 250ml for use with L/S
®
15
tubing or 500 mL for use with L/S
®
24 tubing. The graduated
cylinder is not supplied with the sampler system and is the
users’ responsibility to provide one. See the ACCESSORIES
section for recommended graduated cylinders.
CALIBRATION PROCEDURE
1. Setup the Composite Sampler on site as it will be used
for sampling.
2. Verify that the global settings for lift height and tubing
length have been entered.
3. Disconnect the sample hose from the sample reservoir
quick disconnect fitting.
4. Have the graduated cylinder ready.
5. Press the CAL key.
The display will change to read:
6. Press the ENTER key and hold the sample hose to the
graduated cylinder.
7. The system will first purge the sample intake line and then
take a calibration volume. When the sample has completed
taking a calibration volume, the display will change to read:
8. Read the volume from the graduated cylinder and enter the
volume measured on the numeric keypad and press the
ENTER key. EXAMPLE: If the volume was 10.5 ml enter 105
and press enter. If the measured volume was 267.5 ml
enter 2675 and press enter.
9. The system will then return to a system ready prompt on
the LCD display.
c
START TUBE CALIBRATION
USING FACTORY CAL
ENTER MEASURED VOLUME
_ _ _ . _ ML (1-999.9)
SAMPLER SYSTEM READY
HH:MM:SS MM/DD/YYYY
