Sensidyne SensAir User manual

Toxic Gas Detector
User Manual
Document No. 360-0194-02 Rev H
Sensidyne, LP • 1000 112th Circle N, Suite 100
St. Petersburg, Florida 33716 USA
800-451-9444 • [phone] • [phone] [fax]
web: www.sensidyne.com • e-mail: [e-mail]

SensAir Toxic Gas Detector
Sensidyne Document No. 360- 0194-02 (Rev H) 3
How to Use This Manual
This manual is a guide for using the SensAir Toxic Detector. It contains information on the detector, detector
components, and the Normal Operation Display. It also shows how to mount and wire the detector, initial setup,
zeroing, and span calibration. In addition, it covers commonly used operations regarding alarms and relays. For
reference, the entire menu structure is outlined in Appendix- Menu Map
Because the SensAir Toxic Detector is menu driven, it is important to become familiar with how the magnetic
switch controls are used to navigate through the menus, select specific menu items, and change the many
different parameters available to the user. The Menu Map in the Appendix will help you toward this end.

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4 Sensidyne Document No. 360-0194-02 (Rev H)
Table of Contents
How to Use This Manual................................................................................................................................ 3
Packing List and Notices................................................................................................................................ 7
WARNINGS ................................................................................................................................................. 8
1INTRODUCTION.........................................................................................................10
2SENSAIR PART NUMBER SYSTEM..........................................................................11
3COMPONENTS...........................................................................................................12
3.1 Condulet Housing............................................................................................................................... 12
3.2 Display................................................................................................................................................ 12
3.2.1 Electronics...................................................................................................................................14
3.3 The Sensor Assembly......................................................................................................................... 14
4INSTALLATION ..........................................................................................................15
4.1 Location .............................................................................................................................................. 15
4.2 Detector Installation (Enclosure)......................................................................................................... 15
4.3 Detector Location................................................................................................................................ 16
4.3.1 Wiring..........................................................................................................................................16
4.3.1.1 Detector Wiring Diagram...................................................................................................................... 16
4.3.2 Allowable Line Length.................................................................................................................17
4.3.3 Wiring Procedure ........................................................................................................................18
5OPERATION ...............................................................................................................19
5.1 Output Current.................................................................................................................................... 19
5.2 Interferents.......................................................................................................................................... 19
6START UP PROCEDURE...........................................................................................20
7CALIBRATION............................................................................................................21
7.1 Equipment........................................................................................................................................... 21
7.2 Zeroing................................................................................................................................................ 21
7.3 Select Calibration Gas Concentration ................................................................................................ 21
7.4 Calibration Procedure......................................................................................................................... 22
8MAINTENANCE..........................................................................................................23
8.1 Sensor replacement:........................................................................................................................... 23

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Sensidyne Document No. 360- 0194-02 (Rev H) 5
8.2 Sensor Assembly Replacement ..........................................................................................................23
9 APPENDIX- MENU MAP ................................................................................................25
10 APPENDIX- FAULT CODES.......................................................................................29
11 APPENDIX- DIMENSIONAL DRAWINGS ..................................................................30
11.1 Dimensions..........................................................................................................................................30
12 APPENDIX- CALIBRATION EQUIPMENT .................................................................32
Calibration Gases .......................................................................................................................................32
13 APPENDIX –ACCESSORIES AND SPARES............................................................34
14 APPENDIX- SPECIFICATIONS..................................................................................35
15 SENSOR DATA SHEETS ...........................................................................................36
15.1 Hydrogen Sulfide, H2S, 50ppm............................................................................................................36
15.2 Hydrogen Sulfide, H2S, 100ppm..........................................................................................................37
15.3 Ammonia, NH3, 50ppm........................................................................................................................38
15.4 Ammonia, NH3, 100ppm......................................................................................................................39
15.5 Ammonia, NH3, 300ppm......................................................................................................................40
15.6 Carbon Monoxide, CO, 500ppm..........................................................................................................41
15.7 Carbon Monoxide, CO, 100ppm..........................................................................................................42
15.8Chlorine, Cl2, 5.0ppm...........................................................................................................................43
15.9 Chlorine, Cl2, 10.0ppm.........................................................................................................................44
15.10Hydrogen Chloride, HCl, 10.0ppm.......................................................................................................45
15.11Hydrogen Chloride, HCl, 100ppm........................................................................................................46
15.12Nitrogen Dioxide, NO2, 10ppm............................................................................................................47
15.13Hydrogen, H2, 1000ppm......................................................................................................................48
15.14Hydrogen Cyanide, HCN, 20.0ppm.....................................................................................................49
15.15Hydrogen Fluoride, HF, 10.0ppm........................................................................................................50
15.16Sulfur Dioxide (Filtered), SO2, 20.0ppm..............................................................................................51
15.17Chlorine, ClO2, 5.00ppm......................................................................................................................52
16 APPENDIX- ALLOWABLE LINE LENGTHS..............................................................53

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6 Sensidyne Document No. 360-0194-02 (Rev H)
17 SENSAIR MODBUS RELAY OPTION BOARD..........................................................54
18 SENSAIR MODBUS REGISTER ADDRESSES (OPTION) ........................................59
19 SENSAIR MODBUS SPECIFICATIONS (OPTION)....................................................60
20 WIRING RELAYS (OPTIONAL)..................................................................................61
21 APPENDIX- TROUBLESHOOTING GUIDE................................................................62
22 RETURNEDMATERIALAUTHORIZATION......................................................................63

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Sensidyne Document No. 360- 0194-02 (Rev H) 7
Packing List and Notices
You should have the following items:
SensAir Toxic Gas Detector unit
Magnetic Screwdriver
User Manual (this document)
Always check to make certain you have received all of the items listed above. If you have any questions or need
assistance, contact your Sensidyne Representative, or call 800-451-9444 or [phone]
PROPRIETARY NOTICE
This manual was prepared by Sensidyne, LP exclusively for the owner of the SensAir Toxic Gas Detector. The
material within this manual is the proprietary information of Sensidyne, LP and is to be used only to understand
and operate the instrument. By receiving this document, the recipient agrees that neither this document nor the
information disclosed within nor any part shall be reproduced or transferred, physically, electronically or in any
form or used or disclosed to others for manufacturing or for any other purpose except as specifically authorized in
writing by Sensidyne, LP.
COPYRIGHT NOTICE
©2014, Sensidyne, LP All rights reserved. Information contained in this document is protected by copyright. No
part of this document may be photocopied, reproduced, or translated to another program or system without prior
written authorization from Sensidyne, LP
TRADEMARK NOTICE
Sensidyne, the Sensidyne logo, SensAlert, the SensAlert & SensAir logos, T-O-D & Test-on-Demand are
registered trademarks of Sensidyne, LP. The trademarks and service marks of Sensidyne, LP are protected
through use and registration in the United States of America.
SOFTWARE LICENSE
The software included with the SensAir Toxic Detector is the property of Sensidyne, LP and shall remain the
property of Sensidyne, LP in perpetuity. The software is protected by U.S. and international copyright laws and is
licensed for specific use with the SensAir Toxic Gas Detector. The user may not reverse-engineer, disassemble,
decompile, or make any attempt to discover the source code of the software. The software may not be translated,
copied, merged or modified in any way. The user may not sublicense, rent, or lease any portion of the software.
The right to use the software terminates automatically if any part of this license is violated.
DISCLAIMER
SENSIDYNE, LP ASSUMES NO RESPONSIBILITY WHATSOEVER, TO ANY PARTY WHOSOEVER, FOR ANY
PROPERTY DAMAGE, PERSONAL INJURY, OR DEATH CAUSED BY OR RESULTING FROM, IN WHOLE, OR
IN PART, THE IMPROPER USE, INSTALLATION, OR STORAGE OF THIS PRODUCT BY THE USER,
PERSON, FIRM, ENTITY, CORPORATION OR PARTY NOT ADHERING TO THE INSTRUCTIONS AND
WARNINGS OR NOT ADHERING TO ALL FEDERAL, STATE, AND LOCAL ENVIRONMENTAL AND
OCCUPATIONAL HEALTH AND SAFETY LAWS AND REGULATIONS.
THE SELLER SHALL NOT BE LIABLE FOR DIRECT, INDIRECT, CONSEQUENTIAL, INCIDENTAL OR OTHER
DAMAGES RESULTING FROM THE SALE AND USE OF ANY GOODS AND SELLER’S LIABILITY
HEREUNDER SHALL BE LIMITED TO REPAIR OR REPLACEMENT OF ANY GOODS FOUND DEFECTIVE.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR USE OR FOR A
PARTICULAR PURPOSE WHICH ARE EXPRESSLY DISCLAIMED.

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8 Sensidyne Document No. 360-0194-02 (Rev H)
WARNINGS
READ AND UNDERSTAND ALL WARNINGS BEFORE USE
Read and understand ALL warnings before using this product. Failure to read, understand, and comply
with ALL warnings could result in property damage, severe personal injury, or death.
Product is calibrated prior to shipment, however, this product must be calibrated prior to initial use. Calibrate at
regular intervals in accordance with the User Manual. Failure to calibrate in accordance with the instructions in
this manual and at the specified intervals may result in the product not operating properly or malfunctioning.
Read and understand ALL applicable federal, state, and local environmental health and safety laws and
regulations, including OSHA. Ensure complete compliance with ALL applicable laws and regulations before and
during use of this product.
The user/installer must understand the Hazardous Area Protection Concepts and Area Classifications applicable
to their operation.
UNDER NO CIRCUMSTANCES should this product be used except by qualified, trained, technically competent
personnel and not until the warnings, User Manual, labels, and other literature accompanying this product have
been read and understood.
Failure to read and understand the User Manual may result in preventable severe personal injury or death.
ALWAYS wash your hands thoroughly after handling, calibrating, or servicing this product.
ALWAYS wear eye protection (such as safety goggles), face shield, chemical resistant gloves and chemical
resistant clothing when handling chemicals, or calibration sources.
DO NOT get chemicals, gases, fumes, or vapors in your eyes or on your skin, as they may cause severe burns to
skin and eyes. If chemicals, gases, fumes, or vapors get in your eyes or on your skin, wash the affected area with
copious amounts of water and call a physician immediately.
ALWAYS avoid any contact of acids with your skin or eyes. Seek immediate medical attention for any contact with
acids.
ALWAYS calibrate in a well-ventilated area. Adequate precautions should be taken to prevent the buildup of ANY
calibration sources or vapors. Avoid breathing ANY calibration fumes or vapors as they may be hazardous to your
health.
ALWAYS dispose of chemicals and calibration sources in compliance with ALL applicable safety laws,
regulations, and guidelines for proper disposal. Failure to do so may result in environmental damage, property
damage, personal injury or death.
ALWAYS close ALL containers of chemicals used with this product after use.
ALWAYS ensure that any compressed calibration substance sources are empty prior to disposal, should they be
used.
ALWAYS use clean, dry, inert materials to contain and transfer substances used for calibration.
DO NOT remove, cover, or alter any label or tag on this product, its accessories, or related products.
DO NOT operate this product should it malfunction or require repair. Operation of a malfunctioning product, or a
product requiring repair may result in serious personal injury or death.
DO NOT attempt to repair or modify instrument, except as specified in the Operation & Service Manual. If repair is
needed, contact the Sensidyne Service Dept. to arrange for a Returned Material Authorization (RMA) Returned
Material Authorization
Users should refer to MSDS and suppliers’ instructions for proper handling and safety instructions for any
chemicals used with this equipment.

SensAir Toxic Gas Detector
Sensidyne Document No. 360- 0194-02 (Rev H) 9
WARNINGS
READ AND UNDERSTAND ALL WARNINGS BEFORE USE
Use ONLY genuine SENSIDYNE® replacement parts when performing any maintenance procedures described in
this manual. Failure to do so may seriously impair instrument performance and affect Certification. Repair or
alteration of the product beyond the scope of these maintenance instructions, or by anyone other than an
authorized SENSIDYNE® service technician, could cause the product to fail to perform as designed and persons
who rely on this product for their safety could sustain severe personal injury or death.
The product is intended for non-hazardous locations and is not intended as a life safety device. It is intended to
detect gas and act as a warning signal for the protection of personnel or building structures.
The SensAir Toxic Gas Detector is an ambient air monitoring device. Restricting the access of ambient air to the
sensor may result in less than optimal monitoring performance.
Prolonged exposure to excessively high concentrations of gas may cause the sensor to produce erroneous
readings.
Always make use of a rainshield to protect against variations caused by environmental conditions.
Perform tests only within the specified operating ranges.
Sudden changes in pressure may cause temporary fluctuations in the sensor reading.
Important Calibration Considerations:
Unit calibration must be done at altitude.
Verify concentration of calibration gas before making calibration adjustments.
Concentration can be altered by:
Deterioration of the concentration of compressed calibration gas sources during storage.
Interaction of the calibration gas with materials used to contain and transfer the gas, as for example,
absorption onto and permeation through certain plastics.
Interaction of the calibration gas with materials and/or ambient contaminants, as for example, absorption into
water.
If further translation is required, please contact the Sensidyne EU Authorized Representative (see Back Cover for
contact information).

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10 Sensidyne Document No. 360-0194-02 (Rev H)
1INTRODUCTION
This manual provides specific information concerning the installation, operation, calibration, and maintenance of
the SensAir Toxic Gas Detector.
IMPORTANT: Owners of the Toxic Gas Detector must read this manual in its entirety in order to ensure proper
operation of the detector.
The SensAir Toxic Gas Detector is non-hazardous, single-point device capable of detecting the presence of
various substances. The detector detects each substance in ppm levels.
The standard detector consists of a display board and a power supply board housed in a heavy duty enclosure, a
sensor specifically designed to detect Toxic substances, and optionally, a relay/Modbus board.
A complete monitoring system consists of the detector and a separate read-out device & Class 2 power supply
capable of monitoring a 4-20 mA output and supplying 12-30 Vdc power.
Product specifications are located in Appendix B.
Different versions of the detector are available (see Part Number Table). The selection of the version best suited
to an application depends upon the application requirement.
PVC and Anodized aluminum are for general purpose and heavy duty industrial applications.