MODEL YB8 PROGRAMMING SECTION
April 1999/Manning Environmental Inc.
3DJH%
*20 Volume Calibration
*20 calibrates the unit. Calibration is critical to ensure the sampler is drawing the correct amount of sample
fluid each cycle. Failure to calibrate the unit could lead to potentially inaccurate sample volumes that can
adversely affect the accuracy of the analysis. The YB8 should be calibrated any time parameters that could
affect the performance and accuracy of the unit are changed. This includes changing the pump tubing, varying
the intake hose length, changing t he sampling lo cation, etc. T o run t he calibration fo llow t he detailed
instructions below. There are a few important items to remember about the *20 Mode:
1) A device to measure liquid volume is required. Direct the discharge side of the pump tubing into the
liquid measurement container so the sample will be collected with no spillage. M easure the sample as
accurately as possible as the sampler will o nly be as accurate as the sample volume entered into the
system.
2) It is best to calibrate the unit at the site where sampling is to take place. This ensures that site
parameters, which can affect the accuracy of the sample volume, are accounted for by the unit. If this
is not possible, simulate the conditions as closely as possible, before putting the unit into service.
After entering the *20 Mode, the system will prompt t he user t o start the calibration cycle. A fter pressing
<START> the unit will automatically perform t he functions necessary to collect a sample. Make sure the
discharge hose is directed into a measuring container. Once the unit has deposited the sample, measure it very
precisely, and then enter the volume into the system at the CALIBRATION VOLUME prompt. If the sample
size is correct t he calibration is complete. I f it is not re-run the calibration entering t he amount o f liquid
collected into the system each time until the volume is correct. If the unit is not able to match the desired
preset volume, check the *99 Mode to verify parameters that could affect the accuracy of the sample volume
are entered correctly (i.e., Draw Height, Intake Hose Length, etc.). If they are confirmed accurate, call the
Manning Service Department for assistance. T he unit will return to t he SAMPLER READY prompt after
calibration.
Display on LCD Explanation
SAMPLER READY
04/30 04:30:02
This display shows t he sampler is ready t o program. I t displays the
current time. From here the user can enter any TIME, FLOW, or *
Mode. Press the * key to access the * Mode.
ENTER * MODE?
__ __ 04:30:02
Prompts the user to enter either a program or the calibration
function. Press 20 and <ENTER> to calibrate the sampler.
Enter the desired sample volume. The default is 200mL.
SAMPLE VOLUME?
0200 04:30:02
To Next Page
Loading...