Envent Engineering Ltd. Page 1 Revision 2.4
INTRODUCTION
This manual provides all the necessary information to install, operate and maintain the
330S, 330SDS, 331S and 331SDS model H
2
S Analyzer units. This manual is
intended for all technical level users.
Throughout this document will be referring to the models 330S and 331S. However,
the information applies equally to the 330SDS and 3301SDS (Dual sensor), unless
otherwise stated. To clarify, the difference between an "S" model and a "SDS" model
analyzer is the second sensor the "SDS" has to measure H
2
S giving it the capability to
measure H
2
S from two different samples at the same time; the DS stands for Dual
Sensor.
The Envent 330S/331S H
2
S Analyzer is a uniquely rugged and simple design that
utilizes lead acetate based detection which provides a linear and interference-free
output of H
2
S concentration. This analyzer can measure a wide range of hydrogen
sulfide concentrations from parts per billion (ppb) concentrations to parts per million
(ppm) concentrations. With the addition of a dilution sample system, it can read high
concentrations in percentage up to 100%. There are other options available such as
the sample system for H
2
S analysis in liquids or the addition of a hydrogen reaction
furnace for total sulfur measurements.
Contacting Envent Engineering Ltd
This manual covers most of the important information the user is going to need to
install, operate and maintain the 330S/331S H
2
S Analyzers. If more information is
required, you can contact us at:
Canada Office: (Main)
Toll Free: 1 (877) 936 - 8368
Tel: (403) 253 - 4012
Fax: (403) 253 - 4016
Email: info@envent-eng.com
Hours of operation: Monday to Friday – From 8:00 am to 4:30 pm (Mountain Time
Zone). Offices closed on statutory holidays.
USA Office:
Tel: 1 (713) 568 - 4421
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