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> upgrades and parts | |||||
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Upgrades and Parts |
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Constant technological advancements and improvements have been made to the 4000 Series Samplers. Some improvements, like the newest power supply introduced in 2008, are specific to new samplers only. But nearly all parts and upgrades
are backwards-compatible, designed to retro-fit older sampling units. |
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| Multi-Function Controller | Stepper Assembly | ||||||
 The 4000 series multi-function controller features easy-to-use instructions, 16 key touchpad, and 2x16 character backlit LCD. Controller has a real-time clock and is able to control sample initiation based on a number of different criteria (e.g. interval time, pulse count, 4-20mA, external contact), and is programmable with a variety of different sample sequences (e.g. composite, consecutive, timed step). It also features an internal lithium battery to maintain program settings and information in the case of power failure. |
The stepper assembly unit is the arm which distributes samples used in discrete sampling. Recent changes and upgrades have helped prevent leaks, decrease on wear, and increase the life and performance of the unit. (Picture shown also includes stepper bracket.) |
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| Power Pack Upgrade Kit | Teflon Metering Chamber Cover | ||||||
 The 4000 series battery has gone through rigorous testing and
improvements, particularly in regards to the cooling system. Whereas
the previous system of cooling was convection, now the system
includes both convection and forced air (fan), of particular importance
in some sampling situations with high levels of waste heat. Also the
body has been upgraded from plastic to metal, increasing reliability. |
 In toxic or MISA-type sampling environments where a teflon cover is needed rather than the standard nylon, warping can occur, which will lead to leaks. This new cover for the metering chamber has a powder-coated aluminum reinforcing ring and stainless steel fittings, preventing warping and providing an even pressure; the long-lasting, practical solution for rugged use. |
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