CHAPTER 1 – INTRODUCTION AND OVERVIEW
1.1 General
The model 1100 Compact Series analyzer by Neutronics offers an efficient solution in a small
package for oxygen measurement and control applications. The Model 1100 is a microprocessor-
based instrument for measuring zero to 100% oxygen. The system is supplied with a model MAX-
250 oxygen sensor, a flow through head, and a 6-foot sensor interface cable.
At the heart of the analyzer is the model MAX-250 oxygen sensor. This sensor assures reliability
and fast response for critical measurements from zero to 100%. It utilizes a unique weak acid
electrolyte which offers long life and is unaffected by CO
2
and other acid gases. When used with
the model 1100, the MAX-250 is remote mounted to allow the sensor to be installed close to a
sampling point for the fastest response time possible for process monitoring and control
applications. A flow-through mounting head is supplied for use with all Neutronics Inc. process gas
sampling systems.
1.2 Features
The Compact Series analyzers are designed to be flush mounted to a panel or console. Because
of the small size of the Model 1100 analyzer, it can be integrated into a variety of equipment or
control panels. The Remote Sensor Module can be mounted close to the sampling point to assure
the fastest response possible.
Other Features Include:
• Low-cost disposable galvanic sensor
• Two user-adjustable oxygen alarms with configurable relay outputs for process control use
• Two analog outputs: 4-20 mA AND 0-1, 0-5 (0 to 4.94), or 0-10 VDC
• Auto-ranging or fixed range oxygen measurement (VDC output provided for auto-range
identification)
• Bi-directional RS-232 serial interface for connection to a PC, terminal, or printer
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General