Download 3710 Portable Samplers

3710 Portable Samplers
Section 1 Introduction
Both of the 3710 Portable Sampler configurations consist of three
units: the top cover, the center section, and the base section. The
removable top cover protects the control box mounted on the
center section. The center section includes the control box, liquid
detector, and pump. It also supports the shut-off float cage
assembly used to automatically terminate sampling when the
sample container becomes full. The base section holds the composite sample bottle and is fully insulated, allowing you to ice
down samples to maintain sample integrity.
The compact sampler has the same sampling capabilities,
flexible programming, and rugged construction of the standard
sampler, but is also lightweight and can fit down circular manholes as small as 18 inches in diameter.
The controller is housed in the watertight control box mounted
on the top of the center section. The controller consists of a microprocessor with software embedded in a PROM (Programmable
Read Only Memory) and supporting electronics. A desiccator is
installed in the control box to prevent moisture damage to the
electronics and pump.
The controller runs the pump, responds to the keypad, and presents information on the display. It governs all automatic sampling according to user-selectable program settings. The
controller also provides for manual control of the sampler; for
instance, you can run the pump forward with the PUMP FORWARD
key or initiate a manual sample with the MANUAL SAMPLE key.
The control panel, containing the 40 character alphanumeric
LCD (Liquid Crystal Display) and keypad, is located on the top of
the control box. The 23 position keypad is used to enter program
parameters and direct the following controls: on/off, pump
reverse, pump forward, stop the pump, start sampling, resume
sampling, and display the operating status.
1.2 Programmable
Features
An intuitive user interface allows the 3710 Sampler to be programmed for both simple and complex sampling schemes. The
LCD prompts you through the programming process by presenting a choice or a question on the sampler’s LCD. Programming the sampler is a matter of responding to displayed
prompts with the keypad. Two programming modes, “basic” and
“extended,” are standard with the 3710 Sampler. The basic programming mode allows you to set up typical sampling routines
easily and efficiently. The extended programming mode expands
the versatility of the sampler by providing options which allow
you to create complex sampling routines.
The LCD not only prompts you through the programming
process, but also allows you to closely monitor a sampling routine
as it is executed. The LCD displays pertinent information about
the routine – for example, the time of the next sample – and
notifies you of any problems encountered during the routine. As
the routine progresses, the sampler logs key information about
the results of the routine. The results include the start time, any
halt and resume times, time of samples, and cause of any missed
samples. This information is accessible during a routine or after
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