Teledyne 2020 - Explosion proof thermal conductivity analyzer - Manual (Page 9)

1-3 Teledyne Analytical Instruments
Thermal Conductivity Analyzer Introduction 1
• High resolution, accurate indication of target or impurity gas
concentration from large, bright, meter readout. (0-9999 ppm
through 0-100 % depending on types of gas involved.)
• Standard, proven sensor cell design.
• Wide range of custom applications, ranges, and linearization.
• Microprocessor based electronics: 8-bit CMOS microprocessor
with 32 kB RAM and 128 kB ROM.
• Auto and remote calibration capabilities.
• Four analog outputs: two for measurement (0–1 V dc and
Isolated 4–20 mA dc) and two for range identification.
• Compact and versatile design: Small footprint, yet internal
components are accessible.
1.4 Model Designations
The Model 2020 is ordinarily custom programmed at the factory to fit
the customer’s application. Many parameters, including the number of
channels, the gas application, the materials specification of the sampling
system, and others, are options. The most common options, are covered in
this manual. See the Specific Model Information checklist in the front
matter of this manual for those that apply to your Model 2020 analyzer.
Some standard models that are not covered in this manual are listed here.
Models 2000B: NEMA-4, bulkhead mounted enclosure for general
purpose, nonhazardous environments.
Models 2010: Split architecture models using a sealed explosion-proof
enclosure for the Analysis Unit and a general purpose
remote Control Unit for installation in a safe area.
Models 2020: Both the analysis section and control unit are in a single
explosion proof enclosure.
1.5 Operator Interface (Front Panel)
The Model 2020 is housed in a explosion proof housing. See Figure 1-
1. The front panel has two single operator controls, a digital meter, and an
alphanumeric display. They are described briefly here and in detail in the
Operations chapter of this manual.