Manning YB8, Operating And Instruction Manual

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PROGRAMMING SECTION MODEL YB 8
April 1999/Manning Environmental Inc.
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*06 Analog Level Mode
The *06 mode expands the capability of the sampler by allowing it to collect samples based on changing level
parameters. The sampler is used in conjunction with an external device which outputs an analog signal (4-
20mA) representing level (for more details on how the analog controller works, refer to the analog
programming section on page 2-12). The sampler does not ask for a definition of this level unit, so ANY can
be used, i.e. feet, meters, or inches. Once the unit is programmed and started, the sampler integrates the
analog signal once per minute to internally track the water level. When the source water level rises above or
falls below a Sampling Level, the sample collection process is initiated. The sampler will advance the spout,
take a sample and deposit it in the first bottle. Every time a Sample Level is exceeded or passed after that, the
sampler will take a sample, deposit it, and then move to the next bottle in sequence. The sampler will continue
this pattern of depositing samples in each bottle until the total number of bottles the unit is configured for (set
in *99) each have a sample placed in them or a bottle full condition occurs.
To use the *06 mode, the following entries must be entered:
UPPER LEVEL LIMIT This is the highest anticipated level of the source liquid. It acts as a ceiling. If
the water ever rises above the Upper Level Limit, the sampler considers the level
as temporarily fixed at the highest Sampling Level (once the level falls below this
point, normal program operation resumes). It is important to make sure the
Upper Level Limit is high enough to prevent this from occurring.
LOWER LEVEL LIMIT This is the lowest anticipated level of the source liquid. It acts as a floor. If it is
possible for the level to drop below the Lower Level Limit, and it does, the
sampler considers the level as temporarily fixed at the Lower Level Limit (once
the level rises above this point, normal program operation resumes). It is
important to make sure the Lower Level Limit is low enough to prevent this from
occurring.
SAMPLING LEVEL (1-32) These are the levels at which samples will be taken (up to 32 levels can be
programmed). Enter the level as a 4-digit number. Remember the decimal point
is implied, and must be consistent with previous ones. The unit of measure is
generic so it can be feet, meters, etc. The * key will end data entry at any time if
all 32 levels are not going to be entered.
The difference (delta) between the Upper Level Limit and the Lower Level Limit is called the span (or
distance). In figure 2-2, the Upper Level Limit is 37 and the Lower Level Limit is 2.5, so the span is 34.5. The
controller divides the span into 256 equal steps, with each step equal to 0.39% (1/256) of the total. The
sampler will always display the next acceptable level. A level that is greater can be entered or the user can
accept the displayed entry.
The lowest Sampling Level, must be greater than the Lower Level Limit and each successive level must be
greater than the previous level. In figure 2-2, the Lower Level Limit is 2.5 and Sampling Level 1 is 4.0. T he
highest sampling level can be equal to the Upper Level Limit, although this is not necessary. If it is equal to the
Upper Level Limit, it must be entered separately. In figure 2-2, the highest sampling level is equal to the Upper
Level Limit so it is entered as Sampling Level 7. Press <START> to begin the program.