Sperian ToxiLtd Reference Manual
ToxiLtd®
Single Gas
Detector
Reference Manual
Sperian Instrumentation
651 South Main Street
Middletown, CT 06457
(800) 711-6776
(860) 344-1079
Fax (860) 344-1068
Part number 13-266
Version 2.00
23AUG2007
0
THE TOXILTD® PERSONAL PORTABLE GAS DETECTORS HAVE
BEEN DESIGNED FOR THE DETECTION AND MEASUREMENT OF
POTENTIALLY HAZARDOUS ATMOSPHERIC CONDITIONS.
IN ORDER TO ASSURE THAT THE USER IS PROPERLY WARNED OF
POTENTIALLY DANGEROUS ATMOSPHERIC CONDITIONS, IT IS
ESSENTIAL THAT THE INSTRUCTIONS IN THIS REFERENCE MANUAL
BE READ, FULLY UNDERSTOOD, AND FOLLOWED.
Sperian Instrumentation Part Number 13-266
Sperian Protection Instrumentation, LLC
No page or part of this operation manual may be reproduced in
any form without written permission of the copyright owner
Sperian Instrumentation reserves the right to correct
ToxiLtd® Reference Manual
Version 2.00
Copyright 2007
by
Middletown, Connecticut 06457
All rights reserved.
shown above.
typographical errors.
1
Table of Contents
Certifications........................................................................................ 3
ATEX Label Requirement.................................................................... 3
Warnings and Cautions ...................................................................... 3
A. Signal Words .........................................................................................................3
B. Warnings................................................................................................................4
1. Overview......................................................................................... 5
1.1 Methods of sampling .......................................................................................... 5
1.2 Sensors..............................................................................................................5
1.2.1 Sensor ranges and resolutions................................................................... 5
1.2.2 ToxiLtd O
1.2.3 F1: Missing sensor during startup............................................................... 5
1.3 Alarm logic......................................................................................................... 6
1.3.1 Gas alarms................................................................................................. 6
1.3.2 Silence warning alarms .............................................................................. 6
1.3.3 Calibration due notices............................................................................... 6
1.3.4 Low battery alarms ..................................................................................... 6
1.4 Design components ........................................................................................... 6
1.5 Standard accessories.........................................................................................7
1.6 Value pack kits................................................................................................... 7
2. Field Operation .............................................................................. 7
2.1 Turning the ToxiLtd on ....................................................................................... 7
2.1.1 O
2.1.2 Toxic version start up sequence................................................................. 7
2.1.3 Start up sequence ......................................................................................7
2.2 Functions ...........................................................................................................8
2.2.1 View max gas readings ..............................................................................8
2.2.2 View alarm levels ....................................................................................... 8
2.3 Calibration due notices.......................................................................................9
2.4 Low battery alarms............................................................................................. 9
2.5 Turning the ToxiLtd off ....................................................................................... 9
2.6 Sampling.......................................................................................................... 10
2.6.1 Sample draw kit usage .............................................................................10
version start up sequence......................................................................7
2
3. Calibration.................................................................................... 10
3.1 Verification of accuracy .................................................................................... 10
3.1.1 Verifying accuracy and response: ToxiLtd O
3.1.2 Verifying toxic sensor performance...........................................................11
3.2 Effect of contaminants on ToxiLtd sensors.......................................................11
3.2.1 Effects of contaminants on oxygen sensors..............................................11
3.2.2 Effects of contaminants on toxic gas sensors........................................... 11
3.3 Fresh air/zero calibration..................................................................................12
3.4 Functional (bump) testing for ToxiLtd with toxic gas sensor..............................12
3.5 Span Calibration for ToxiLtd with toxic gas sensor ...........................................13
3.6 Failure to calibrate............................................................................................14
3.6.1 Fresh air/zero calibration failure................................................................14
3.6.1.1 Reason for fresh air/zero calibration failures....................................................14
3.6.2 Span calibration failure............................................................................. 14
3.6.2.1 Sensor out of range (no CAL)..........................................................................14
3.6.2.2 No gas............................................................................................................14
warm-up phase .........................................................................5
2
...........................................10
2
2
3.6.2.3 Causes for span cal failure.............................................................................. 14
3.6.3 Forced fresh air/zero calibration ...............................................................14
3.7 Fresh air/zero calibration in a contaminated atmosphere .................................15
4. Event logging............................................................................... 15
4.1 Initiating communications................................................................................. 15
Appendices ........................................................................................ 16
Appendix A: Sensor Cross-Sensitivity Chart................................................................ 16
Appendix B: Default toxic sensor calibration gas settings ............................................ 16
Appendix C: Calibration Frequency ............................................................................. 17
Sperian Instrumentation Warranty Gas Detection Products ........ 18
Certifications
The ToxiLtd® carries the following certifications:
UL and c-UL, Class I, Division 1, Groups A,B,C,D, Temp Code T4.
UL Class II, Division 1, Groups E,F,G
ATEX Certification:
II 2 G EEx ia IIC T4
UL International DEMKO A/S 04 ATEX 0327520
IECEx Ex ia IIC T4
CQST (China)
ATEX Label Requirement
Warnings and Cautions
A. Signal Words
The following signal words, as defined by ANSI Z535.4-1998, are used in the ToxiLtd
Operator’s Guide.
indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
indicates a potentially hazardous situation, which if not
avoided, may result in moderate or minor injury.
CAUTION used without the safety alert symbol indicates a potentially
hazardous situation which, if not avoided, may result in property damage.
3
B. Warnings
1.
The ToxiLtd personal, portable gas detectors have been
designed for the detection of either oxygen deficiencies or specific toxic gas
accumulations. An alarm condition indicates the presence of a potentially lifethreatening hazard and should be taken very seriously.
2.
In the event of an alarm condition it is important to follow
established procedures. The safest course of action is to immediately leave the
affected area, and to return only after further testing determines that the area is
once again safe for entry. Failure to immediately leave the area may result in
serious injury or death.
3.
The accuracy of ToxiLtd instruments equipped with a toxic
gas sensor should be checked periodically with known concentration calibration
gas. Failure to check accuracy can lead to inaccurate and potentially dangerous
readings. ToxiLtd instruments equipped with an oxygen sensor should be
periodically calibrated in fresh air.
4.
A ToxiLtd equipped with a toxic gas sensor that fails
calibration may not be used until testing with known concentration test gas
determines that accuracy has been restored, and the instrument is once again fit
for use. Instruments equipped with an oxygen sensor that fail calibration may
not be used until testing with fresh air determines that accuracy has been
restored and the instrument is once again fit for use. An instrument that cannot
be calibrated or is found to be out of tolerance must be replaced immediately.
5.
Do not reset the calibration gas concentration setpoints in
the ToxiLtd unless the concentrations of your calibration gas differ from the
concentrations of the calibration gas that is normally supplied by Sperian for use
in calibrating the ToxiLtd.
6.
Use of non-standard calibration gas and/or calibration kit
components when calibrating the ToxiLtd can lead to dangerously inaccurate
readings and may void the standard Sperian warranty.
Sperian offers calibration kits and long-lasting cylinders of test gas specifically
developed for easy calibration. Customers are strongly urged to use only
Sperian calibration materials when calibrating the ToxiLtd.
7.
8.
Substitution of components may impair intrinsic safety.
For safety reasons the ToxiLtd must be operated by
qualified personnel only. Read, understand and follow the directions set forth in
this reference manual before operating the ToxiLtd.
The ToxiLtd has been tested for intrinsic safety in
9.
Explosive Gas/AIR (max. 21.0% O
).
2
10.
parts inside of the instrument.
Do not open the ToxiLtd. There are no user serviceable
4
1. Overview
The ToxiLtd is a single sensor gas
detector that is designed to detect either
oxygen (O
gases. The ToxiLtd’s sensor type is
shown on the front of the instrument and
is also shown on the display during the
startup sequence.
ToxiLtd gas detectors are disposable
instruments that are designed to operate
for 2 full years from the date of activation.
ToxiLtd models equipped with a toxic gas
sensor (CO, H
activated within 6 months of the
manufacturing date. Oxygen versions
must be activated within 1 month of the
manufacturing date. If the instrument is
not turned on by the “must be activated by
date”, the instrument will activate itself
and the 2-year countdown will begin
automatically.
Upon delivery, the screen of the ToxiLtd
will be blank except for the negated horn
icon.
If the “must be activated by date” has
passed and the instrument has activated
itself, the instrument will show three lines
on the screen with the negated horn icon.
Contact Sperian or your distributor if
three lines are displayed when you first
receive the detector.
The ToxiLtd is delivered with a preinstalled lithium thionyl chloride (LiSOCl
battery capable of powering the
instrument for the full 2 years of the
instrument’s operating life. After the 2year instrument life cycle is up, the
instrument will turn itself off.
Note: Early production runs of the
oxygen version of the ToxiLtd were
referred to as the “OxyLtd”. The
instructions contained in this manual
that refer to the ToxiLtd Oxygen (O
) or one of a variety of toxic
2
S or SO2) must be
2
)
2
)
2
are valid for the OxyLtd with similar
instrument firmware.
1.1 Methods of sampling
The ToxiLtd may be used in diffusion
mode, or with the manual sample draw kit
that is available separately. In either
mode, the atmosphere must reach the
sensor for the instrument to register a
reading. In diffusion mode, the
atmosphere reaches the sensor by
diffusing through the sensor port on the
front of the instrument. Normal air
movements are enough to carry the
sample to the sensor. During remote
sampling, the gas sample is drawn into
the sensor compartment through the
probe assembly and a length of tubing.
See section 2.6 for more details on
sampling the atmosphere.
1.2 Sensors
Toxic sensor versions of the ToxiLtd use
an electrochemical toxic gas sensor. The
ToxiLtd O
uses a galvanic oxygen
2
sensor. Both types of sensor have been
designed to minimize the effects of
common interfering gases. These
sensors provide accurate, dependable
readings for gases commonly
encountered in industrial applications.
1.2.1 Sensor ranges and resolutions.
Sensor Range Resolution
CO 0-1000 PPM 5 PPM
H2S 0 -200 PPM 2 PPM
SO2 0 – 20 PPM 0.1 PPM
O2 0-30%/Vol. 0.2%/Vol.
1.2.2 ToxiLtd O2 warm-up phase
The ToxiLtd O
requires a one-hour
2
warm-up phase from the moment of
activation until actual use. See section
2.1.1 for further details.
1.2.3 F1: Missing sensor during
startup
If the ToxiLtd fails to detect the sensor
during startup, it will show “F 1” with the
caution symbol following the software
version screen at startup. This is covered
in greater detail in section 2.1.3.
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