Teledyne 3020M - Explosion proof paramagnetic oxygen analyzer - Manual (Page 8)

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1 Introduction Model 3020M
Teledyne Analytical Instruments
• Versatile analysis over a wide range of applications.
• Microprocessor based electronics: 8-bit CMOS microprocessor
with 32 kB RAM and 128 kB ROM.
• Three user definable output ranges (from 0-5 % through 0-100
%) allow best match to users process and equipment.
• Auto Ranging allows analyzer to automatically select the proper
preset range for a given measurement. Manual override allows
the user to lock onto a specific range of interest.
• Two adjustable concentration alarms and a system failure alarm.
• Extensive self-diagnostic testing, at startup and on demand, with
continuous power-supply monitoring.
• RS-232 serial digital port for use with a computer or other digital
communication device.
• Analog outputs for concentration and range identification.
(0-1 VDC standard, and isolated 4–20 mADC)
1.4 Model Designations
3020M: Standard model.
3020M-C: In addition to all standard features, this model also has
separate ports for zero and span gases, and built-in control
valves. The internal valves are entirely under the control of
the 3020M electronics, to automatically switch between gases
in synchronization with the analyzer’s operations
3020M-F: Includes flame arrestors for Groups C and D.
3020M-G: Includes flame arrestors for Groups C and D, & -C option.
3020M-H: Includes flame arrestors for Group B (Hydrogen service).
3020M-I: Includes flame arrestors for Group B, & -C option.
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1.5 Operator Interface
All controls and displays on the standard 3020M are accessible from
outside the housing. The instrument has two simple operator controls. The
operator has constant feedback from the instrument through an alphanumeric
display, a digital oxygen meter, and a sample flow meter. The displays and