Emerson 755A- User Manual
Emerson 755A– User Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – Case Classification:; ALARM SPECIFICATIONS
- Page 3 – GENERAL SPECIFICATIONS; sample free of entrained liquids
- Page 4 – ORDERING INFORMATION; Process Analytic Division
Product Data Sheet
PDS 103-755A.A01
January, 2003
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Canadian Standards Association-certified
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High resolution LED digital display
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Ideal for oxygen purity measurement
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Small, rugged, shock-resistant sensing
unit
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Plug-in alarms/current output options
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Adjustable speed of response
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Barometric pressure compensation
Gaseous Oxygen Analyzer
Model 755A
The Model 755A gaseous oxygen analyzer from
Rosemount Analytical provides continuous measurement
of gaseous oxygen with the highest accuracy and
reliability. The heart of this instrument is a compact
paramagnetic sensing unit, designed to monitor a wide
variety of ranges for virtually every application.
FEATURES
The Model 755A gaseous oxygen analyzer uses the
physical paramagnetic measurement technique
exclusively. This method offers distinct operating
advantages over combination measurements, such as
thermal conductivity, thermal convection or chemical
reaction. Two advantages of this technique are:
(1) faster response and, (2) linear detector output.
The 755A continuously measures from 0 to 1% to 0 to
100% oxygen with a resolution of 0.1% fullscale.
Standard zero or suppressed zero is available with a
range span as narrow as 1% and a zero suppression as
large as 99%. Standard response time is 20 seconds.
In addition, the Model 755A includes an integral absolute
pressure compensation circuit. This provides the user
with an oxygen readout that is automatically corrected for
barometric pressure variations. (See General
Specifications.)
Housed in a NEMA-3R aluminum case, the analyzer is
available with options for dual alarms and 0 to 20 mA or
4 to 20 mA current output. All optional features can be
added at the factory or in the field with the simple addition
of plug-in circuit boards. The paramagnetic sensing
assembly is mounted on a platinum suspension for shock
resistance. This assembly is designed for ease of
maintenance and installation.
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Summary
PRINCIPLE OF OPERATION The Model 755A measures the paramagneticsusceptibility of oxygen. This susceptibility is muchhigher than other common gases. When oxygen ispresent in a magnetic field, the oxygen tends toconcentrate in the area of the magnetic field.The Model 755A measures the total magneticsu...
Page 3 GENERAL SPECIFICATIONS Digital Display: 0.00 to 100.00% oxygen Output to Recorder: Any incremental span, selectable: 0 to 1, 0 to 2, 0 to 5, 0 to 10, 0 to 20, 0 to 50, or 0 to 100%oxygen within the overall range. Other spans available asspecial order Reproducibility: ±0.01% oxygen Response Ti...
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not tobe construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicabilit...
