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Environics 4040 Gas Dilution System

The Environics® Series 4040 is a computerized gas dilution system that automatically generates precise gas standards for rapid multi-point calibration of analyzers. The gas mixes can be used in generating precise gas calibration standards, creating gaseous atmospheres or producing gas mixes for analytical research or production purposes. The Series 4040 can produce gas concentrations from percent to ppb levels for single or multi-point calibration.

The system consists of two components: the Series 4040 instrument and the user's personal computer. The user interface is a Microsoft® Windows application that communicates with the Environics system via an RS232 serial interface.

The Series 4040 consists of a single chassis supporting up to four mass flow controllers. The mass flow controllers are factory calibrated using a primary flow standard traceable to the United State's National Institute of Standards and Technology (NIST). Each flow controller utilizes an 11 point calibration table with linear interpolation, to increase accuracy and reduce flow controller nonlinearity.

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Environics 2000 Multi-Component Gas Mixer
The Environics® Series 2000 Computerized Multi-Component Gas Mixer automatically blends and dilutes gases to generate precise gas calibration standards, create gaseous atmospheres or produce gas mixes for analytical research or production purposes. The Series 2000 dynamically produces complex mixes containing up to eight(8) individual component gases in a balance gas. Each component concentration may be independently varied in response to user commands. The Series 2000 can produce gas concentrations from percent levels to ppb for single or multi-point calibration of gas chromagraphs, process gas analyzers, mass spectrometers, FTIR's and other gas analytic devices.

The Series 2000 consists of a single chassis supporting up to nine (9) mass flow controllers, a serpentine pre-mix zone and a zero dead-space final mixing zone. Gas wetted surfaces are electro- polished 316 stainless steel. Seals are gas-compatible elastomer. User interface includes a backlit 80 character by 25 line liquid-crystal display and membrane keypad.

The instrument's mass flow controllers are factory calibrated using a primary flow standard traceable to the United States National Institute of Standards and Technology (NIST). The calibration data consists of an eleven-point comparison of commanded versus actual flow with linear interpolation between the points.

The Series 2000 is available in either a standard rack mount or bench top configuration. The optional RS-232 serial data interface permits remote or computer operation of the instrument.

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Signal 821S Gas Diluter

The Model 821S allows instrument operators and manufacturers to check the linearity of their instruments, by the use of only one calibration gas and one diluent. Eleven fixed steps from 0-100% concentration are provided, each step rising by 10%  The unit operates the method of dividing two gases through a chain of 10 identical capillary tubes, in such a way that the operator selects the number of capillaries to which each gas is open. The Model 821S has a repeatability performance of +/-0.5% of point, and when used in conjunction with the Model 852V5SP Pre Diluter, gases of up to 1,000 times greater in concentration can be used.

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EMS Environmental Monitoring Systems Ltd
Unit 24 Stadium Business Park
Ballycoolin Road , Dublin 11, Ireland 


 Telephone: 00353-1-8853954  
Facsimile: 00353-1-8853959

Office hours: Monday - Friday 09.00-17.00

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