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6700 SAMPLERS
Chapter 5 Reference
S AMPLE E VENT
Chapter Contents
• Sample Event
• Sample Volume
• Suction Head
• Rinses and Retries
• Pacing
• Distribution
• Sampler Enable
• Pauses/Resumes
• Start Times
• Other Functions
• Manual Functions
• Programming Style
• Hardware Setup
• System IDs
• Memory
• Pressurized Lines
• Command Driven Operation
A sample event consists of a complete sampling cycle. A sample
event includes presample and postsample purges, line rinses,
sampling retries, and deliveries of sample volumes. Only one
sample volume is placed in a given bottle during a sample event,
however, depending on the distribution, multiple bottles may
receive sample volumes.
S AMPLE VOLUME
The sample volume is the discrete, programmed amount of liquid
delivered. During a sample event the sampler may deliver a sample volume to several bottles, depending on the distribution.
“Sample volumes” and “samples,” are used interchangeably.
Extended programming adds a flow-dependent sample volume
option for uniform time-paced programs. If a flow module is
attached, the flow source may be the module’s flow volume. Otherwise it is the flow pulse count received at the external flow
meter connector. You enter the amount of flow required for each
10 ml of liquid. When the sample event is initiated, the sample
volume will be based on the flow that has occurred since the last
sample. This sample volume is will be at least 20 ml, but not
more than the bottle volume (or 9990 ml, whichever is smaller).
With flow-dependent sample volumes, the sampler resets the
flow volume count at the start time. Therefore, the sampler will
not take a sample at the start time.
S UCTION H EAD
Extended Screen for
Suction Head Settings
1
AUTO SUCTION HEAD
ENTER HEAD
2
SUCTION HEAD OF
___ ft
(min - max)
Suction head is the vertical distance between the surface of the
liquid source and the sampler’s pump. At each sample event, the
sampler determines the suction head automatically.
In extended programming, you can manually enter the suction
head if you want. Select ENTER HEAD only when the head
remains stable and you can measure it accurately.
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