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3700 Portable Samplers
Section 1 Introduction
1.1.2 3700 Compact
Description
1.2 Programmable
Features
1-2
A desiccator is installed in the control box to prevent moisture
damage to the electronics, pump, and distributor systems. The
sample base holds the sequential or composite bottles and is fully
insulated, allowing you to ice down samples to maintain sample
integrity.
A watertight control box mounted on the top of the center section
houses the controller. The controller consists of a microprocessor
with software embedded in a PROM (Programmable Read-Only
Memory) and supporting electronics. The controller runs the
pump, moves the distributor, responds to the keypad, and pre-
sents information on the display. The controller provides for
manual control of the sampler; for example, you can run the
pump forward with the pump forward key or initiate a manual
sample with the manual sample key. It governs all automatic
sampling according to user-selectable program settings.
Tests indicate that the pump produces sound levels in excess
of 85db at one meter. Prolonged exposure to this sound level
could result in hearing loss and requires the use of protective
ear plugs.
The control panel, which has a 40-character alphanumeric
Liquid Crystal Display (LCD) and keypad, is located on the top of
the control box. The 24-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, display the operating status, and move the distributor
arm to the next bottle.
The 3700 Compact is a modular system that is custom-configured
for the user. It includes a universal compact insulated base, the
inner sleeve with a choice of five bottle configurations, the
standard 3700 controller, and a top cover. The external com-
ponent materials, control panel, display, and keypad are the
same as that of the 3700 Portable.
The 3700 Compact is designed for durability and carrying ease.
In addition its sturdy latches and handles, the base section of the
unit has finger grips molded into the plastic to make it easier to
carry. At its heaviest — with a 24-bottle sleeve inside — the unit
weighs only 62 pounds.
An intuitive user interface lets you easily program the 3700s for
both simple and complex sampling schemes. The LCD prompts
you through the programming process by presenting a choice or a
question on the LCD.
To program the 3700s, you merely respond to displayed prompts
with the keypad. Two programming modes, "basic" and
"extended," are standard with the 3700 Series.
CAUTION
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