Honeywell Lumidor Impact, Impact Pro Operating Manual
Impact and Impact Pro
Operating Instructions
MAN0597 ISSUE 09 - 12/05
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HELP US TO HELP YOU
2
HELP US TO HELP YOU
Every effort has been made to ensure the accuracy in the
contents of our documents, however, Zellweger Analytics
Limited can assume no responsibility for any errors or
omissions in our documents or their consequences.
Zellweger Analytics Limited would greatly appreciate being
informed of any errors or omissions that may be found in the
contents of any of our documents and to this end we include
the following form for you to photocopy, complete and return to
us so that we may take the appropriate corrective action.
MAN0597 ISSUE 09 - 12/05
2302M5030
HELP US TO HELP YOU
To: Marketing Services,
Zellweger Analytics Limited,
Hatch Pond House,
4 Stinsford Road,
Nuffield Estate,
POOLE. Dorset.
BH17 0RZ.
United Kingdom.
Tel: +44 (0) 1202 676161
Fax: +44 (0) 1202 678011
email: literature@zelana.co.uk
US Office
Tel: +1 954 514 2700
Toll free:+1 800 538 0363
From :
Address :
Tel :
Fax :
email :
I suggest the following corrections/changes be made to:
Chapter ........... Section ...........
Marked up copies attached (as appropriate): Yes / No
Please inform me of the outcome of this change: Yes / No
For Marketing Services, Zellweger Analytics Limited:
Actioned By: Date:
Response: Date:
3
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GENERAL STATEMENT OF LIMITED WARRANTY
GENERAL STATEMENT OF LIMITED WARRANTY
COPYRIGHT
This publication contains information partly derived from
proprietary data of Zellweger Analytics. The main objective
of this information is to assist in the operation and
maintenance of the instrument described herein. The
publication of this information does not convey any right to
reproduce or use the information for any purpose other
than in the operation or maintenance of the equipment
described herein.
Zellweger Analytics shall not be liable for any incidental or
consequential damages in connection with any deletions,
errors or omissions in this Manual.
All products are designed and manufactured to the latest
internationally recognised standards by Zellweger Analytics
under a Quality Management System that is certified to
ISO9001. As such Zellweger Analytics warrants its products
against defective parts and workmanship as detailed below.
1. Zellweger Analytics Limited will repair or (at its option)
replace any Contract Goods which are or may become
defective under proper use within the following timescales
from Delivery where such defects solely arise from faulty
design materials or workmanship (Other than a design
made furnished or specified by the Buyer) provided such
defective goods are returned by the Buyer within the
requisite time limits set out below at its expense to
Zellweger Analytics Limited's premises, which returned
goods must detail the Service Event Number (SE#) clearly
on the package and the Buyer shall obtain an SE# by
telephoning Zellweger Analytics Limited Service
Department.
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GENERAL STATEMENT OF LIMITED WARRANTY
2. All products 12 months from delivery (date of original
despatch to the buyer) with the following exceptions:
Impact multigas detector
24 months from delivery
Impact disposable OFCH cartridge
12 months from date of installation into Impact
instrument provided installation takes place
before the stated ‘INSTALL BY’ date on the
cartridge packaging
3. Any such defective goods returned in accordance with the
provisions of this clause must be accompanied by a
detailed report stating the nature of the defect with the
SE#. If no such report is included then Zellweger Analytics
Limited reserve the right to charge a £50 (Sterling)/$75
(US dollars) investigative fee before any repair or
replacement is carried out.
4. The warranties set out in this clause are non pro rata, i.e.
the initial warranty period is not extended by virtue of any
works carried out there under.
5. Where it is impractical to return any defective goods to
Zellweger Analytics Limited’s premises then Zellweger
Analytics Limited should be notified by writing within the
relevant warranty period referred to above and upon being
so notified Zellweger Analytics Limited will despatch a
service engineer to site on a day rate basis (details
available upon request) and if such goods are found to be
defective hereunder then they will be repaired or replaced
free of charge but day rate charges for the service
engineer will apply.
6. Subject to the provisions of this clause Zellweger Analytics
Limited shall not be liable for any loss or damage
whatsoever or howsoever occasioned which may be a
direct or indirect result of the use or operation of the
Contract Goods by the buyer or any Party.
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GENERAL STATEMENT OF LIMITED WARRANTY
7. This warranty covers instrument and parts sold to the
Buyer only by authorised distributors, dealers and
representatives as appointed by Zellweger Analytics
Limited.
8. This warranty does not cover consumable items or items
likely to wear in normal operation including but not limited
to dry-cell batteries, filters and fuses.
9. The liability of Zellweger Analytics Limited under this
clause shall be in lieu of any warranty or conditions implied
by law as to the quality or fitness for any particular purpose
of the Contract Goods and (save as provided in this
clause) Zellweger Analytics Limited shall not be under any
liability whether in contract tort or otherwise in respect of
any defects in the Contract Goods or for any injury (other
than personal injury caused by Zellweger Analytics
Limited’s negligence as defined by Section 1 of the Unfair
Contract Terms Act 1977) damage or loss resulting from
such defects or from work done in connection therewith.
10. This warranty supersedes all existing warranty statements
and Zellweger Analytics Limited make no other warranty
expressed or implied except as stated above.
11. If a claim is made against Zellweger Analytics Limited in
respect of Liability under the Consumer Protection Act
1987 in circumstances where a like claim could have been
made against the Buyer in contract the buyer should
indemnify Zellweger Analytics Limited in full against all
damages costs and expenses that may become payable
as the result of such claim.
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TOTAL ENVIRONMENTAL SOLUTIONS
TOTAL ENVIRONMENTAL SOLUTIONS
Ensure that you read and understand these Operating
Instructions BEFORE installing or operating any part of the
equipment.
Please pay particular attention to the Safety Warnings.
The dry cell battery holder part no. 2302B0371 or
rechargable battery pack part no. 2302B0842 must not be
removed, replaced or recharged in the hazardous area.
Only the following alkaline dry cell batteries must be used
in the dry cell holder part no. 2302B0371.
Duracell MN1500 or Energizer Intelligent E91.
Rechargeable cells must not be used in the dry cell battery
holder part no. 2302B0371.
WARNINGS
Do not mix rechargeable battery packs and dry cell battery
packs.
The instrument must be serviced only by qualified
personnel trained by Zellweger Analytics or by a Zellweger
Analytics Appointed agent. Servicing must be carried out
only in a non-hazardous area.
The Impact must not be used in an oxygen enriched
atmosphere.
Refer to Section 4. OPERATION for details of restrictions
of use of the IMPACT/IMPACT PRO
The Flammable Sensor requires an oxygen content of
greater than 10%v/v to operate reliably. In circumstances
where the oxygen content of the sample is less than
10%v/v, the reading displayed on the Flammable Channel
should be regarded as suspect. In this situation, a Warning
54 (Low O
- Flam Inaccurate) will be generated on the
2
instrument.
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TOTAL ENVIRONMENTAL SOLUTIONS
WARNINGS
The Flammable Sensors sensitivity can be adversely
affected by exposure to certain substances (silicon and
sulphur compounds are examples). Every effort should be
made to avoid exposure to these substances. Following an
H
S alarm or repeated gassing with H2S a check should
2
be performed on the Flammable sensor to verify its
accuracy and a calibration performed if necessary.
If -0.0 %V/V for the CO2 sensor channel is permanently
displayed, a sensor zero calibration needs to be performed
in clean air. The alarm level A1 for the CO
exceed 0.5 %V/V.
range must not
2
Do not calibrate the CO
channel if CO2 is indicated in clean
2
air after the apparatus has been exposed to CO
concentrations above the upper limit of the measuring
range. In this case leave instrument in clean air overnight
before calibration.
The calibration interval for the CO2 sensor shall not exceed
1 month.
Dispose of the spent cartridge and its packaging in
accordance with local regulations. Do not dispose of in fire.
IMPORTANT NOTICE
Zellweger Analytics Limited can take no responsibility for
installation and/or use of its equipment if this is not done in
accordance with the appropriate issue and/or amendment
of the relevant manual.
The user of this manual should ensure that it is appropriate
in all detail to the exact equipment to be installed and/or
operated. If in doubt, the user should contact Zellweger
Analytics Limited for advice.
2
If further details are required which do not appear in this
manual, contact Zellweger Analytics Limited or their agent.
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Note: The failure to observe and abide by the above Warnings
and Cautions may render void the intrinsic safety
approval of the IMPACT/IMPACT PRO, and may remove
any right of claim against Zellweger Analytics relating to
product liability or consequential damage to any third
party.
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CONTENTS
Section Page
Contents
1. INTRODUCTION 16
1.1 Intended use 17
1.2 Product overview 18
2. GETTING STARTED 20
2.1 How to turn Impact/Impact Pro on and off 20
2.2 Inserting the cartridge 21
2.3 Charge for first use 22
2.4 Dry-cell Battery insertion 25
2.5 Sampling 26
3. INSTRUMENT START-UP 28
3.1 Instrument information 28
3.2 Selecting location / operator 29
3.3 Fresh Air Auto zeroing sensors 29
3.4 Sensor Warm-up Phase 30
4. OPERATION 31
4.1 Monitoring Condition 31
4.1.1 Display Screens 31
4.1.2 Other Displayed Symbols 33
4.1.3 Confidence Signal 34
4.1.4 Go/No Go Option 34
4.2 Atmospheric alarm conditions 35
4.3 Alarm condition 36
4.3.1 Latching Alarms (default) 36
4.3.2 Non-latching Alarms 36
4.3.3 Vibrating alarm (where fitted) 36
4.3.4 Resetting an Alarm 37
4.4 Fault and Warning Condition 37
4.4.1 Warning 37
4.4.2 Fault condition 38
4.5 Safelink 38
4.5.1 What is Safelink? 38
4.5.2 Using Safelink 39
4.6 PUMP (IMPACT PRO ONLY) 42
4.6.1 Removal of the Pump Adaptor 47
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CONTENTS
Section Page
4.7 Menus 47
4.7.1 Flammable Gas Selection 48
4.7.2 Operator 49
4.7.3 Calibration 50
4.7.4 Instrument Details 50
4.7.5 Safelink 51
4.7.6 Language 51
4.8 Datalogging 51
4.8.1 Installing the PC Software 52
4.8.2 Event Datalogging 52
4.8.3 Gas Datalogging (optional) 53
4.8.4 Output Formats 53
4.9 Calibration 54
4.9.1 Contaminants 54
4.9.2 Flow Calibration – Instrument 56
4.9.3 Flow Calibration – PC 61
4.9.4 Enforcer Calibration 62
5. FAULT FINDING AND PROCEDURES 64
6. ACCESSORIES 65
6.1 Basestation 65
6.2 Basestation Plinth 66
6.3 Basestation PSU Link Cable 66
6.4 Offline Trickle Charger 67
6.5 Power supply for Basestation and Trickle
Charger 67
6.6 Enforcer 68
6.7 Enforcer gas cylinder 68
6.8 Flow adaptor 69
6.9 Metal Belt Clip 69
6.10 Instrument Webbing Clip 69
6.11 Body Harness Kit 70
6.12 Pump Adaptor Kit 70
6.13 10m Sample Tube Kit 70
6.14 Earpiece 71
6.15 Basestation PC Link Cable 71
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CONTENTS
Section Page
6.16 Safelink Cable Assembly 71
6.17 Safelink Cable Restraint Clip 72
6.18 Hand Aspirator Kit 72
6.19 Sensing Probe 1m 73
6.20 Ball float 73
7. ROUTINE MAINTENANCE 74
7.1 Cleaning 74
7.2 Filters 74
7.3 Battery charging / replacement 75
7.3.1 Rechargeable Battery Pack 76
7.3.2 Dry cell 77
8. ROUTINE SERVICING 78
8.1 Serviceable Cartridges 78
9. SPARE PARTS 96
10. GLOSSARY 97
11. APPENDIX A 101
11.1 Warning Codes 101
11.2 Fault Codes 104
12. APPENDIX B 106
12.1 Warranty 106
12.2 Certification Approvals 106
12.2.1 DMT Test Report 107
12.2.2 Safelink Connection Drawing 110
12.3 Technical Specifications 111
12.3.1 Instrument Specification 111
12.3.2 Charger Specifications 112
12.3.3 Specific Speed of Response Data
(Rising Gas Levels) 113
12.3.4 Specific Recovery Time Data
(Falling Gas Levels) 114
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INSTRUMENT LABELS
INSTRUMENT LABELS
EQUIPMENT LABEL
An explanation of the information on the equipment label is
shown below.
Manufacturers Trademark & Address
Poole
BH17 0RZ, UK
Impact Unit Part No. 2302B1000XXX
User Cautions
CAUTION:
Comms Connection only to other certified
Impact detectors in hazardous area
Read and understand instruction manual before
operating or servicing
Replace/Recharge batteries only in Non Hazardous area
Refer to Manual for battery types
CENELEC (ATEX) CERTIFICATION LABEL
An explanation of the information on the Cenelec (ATEX)
certification label is shown below.
Product Name
Explosion Protection
Mark and Equipment
Group Category
Certified Ambient
Temperature Range
EU Explosive
Atmosphere
Symbol and
Certification Code
as EN50014: 1992
DMT Approval
CE Mark Conforms to all
EC Directives
Certification No.
Identification
No. of ATEX
Notified Body
Australian
Surface
Approval
Australian
Mines
Approval
Brazilian
Approval
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INSTRUMENT LABELS
This instrument has been assessed by DMT for performance
of Oxygen, Methane, Propane, Carbon Monoxide, Hydrogen
Sulfide and Carbon Dioxide channels.
The label marking indicates this:
DMT 02 ATEX G 001
PFG Nr. 41300502
The instrument has been tested in accordance to the following
European Standards.
• EN50054 & EN50057: 1998 for Combustible Gases
(Methane and Propane).
• EN61779-1: 2000 for Combustible Gases (Methane and
Propane) and EN61779-4: 2000.
• EN50104: 1998 for the measurement of Oxygen.
• EN45544-1 & EN45544-2: 1999 for the measurement of
Carbon Monoxide, Hydrogen Sulfide and Carbon Dioxide.
• EN50271: 2000 for the assessment of Digital Components
and Software.
WARNING
Assessment has only been made in the range of 0 to
100%LEL. Use of other ranges of flammable gas
measurement on this instrument will invalidate this
approval.
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UL / CSA Approval
User Warning
Product Name
2302M5030
INSTRUMENT LABELS
UL / CSA CERTIFICATION LABEL
An explanation of the information on the UL / CSA certification
label is shown below.
WARNING
Only the combustible gas detection portion of this
instrument has been assessed by CSA for performance.
Furthermore assessment has only been made in the 0 to
100 %LEL scale. Use of other ranges of flammable gas
measurement on this instrument will invalidate approval.
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1. INTRODUCTION
1. INTRODUCTION
The Impact / Impact Pro is a compact, portable gas monitor
designed to be carried or worn without hindering the user. Its
purpose is to monitor the atmosphere continuously for
hazardous levels of up to four gases. These concentrations if
gases are measures using Zellweger Analytics sensors.
Audible and visual alarms alert the user to danger when
hazardous conditions are detected
The instrument is usually supplied with four gas sensors, for
detecting oxygen (enrichment and deficiency), flammable
gases (up to the Lower Explosive Limit) and two toxic gases
(for personal safety) all housed in an easily replaceable
cartridge.
Various sensor technologies are used to achieve this. In the
vast majority of cases, electrochemical technology is used to
detect oxygen and toxic gases while catalytic combustion
technology is used to detect flammable gases.
Two types of cartridge are available. One is disposable where
the cartridge has a fixed life and once this has expired the
cartridge is disposed of. The other is a Serviceable Cartridge
where the sensors can be individually replaced when required.
The serviceable cartridge type can only be used in the
Impact Pro.
Note: Throughout this manual it is assumed that the Impact /
Impact Pro is equipped with a Disposable Four Sensor
Gas Cartridge. References to sensors not fitted in the
users instrument should be ignored.
This manual covers all models - some features are not
available on all models. Not all models are available in
every country.
The instrument is supplied with dry cells and holders as
standard. Rechargeable batteries and charger can be
purchased separately as a kit.
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1. INTRODUCTION
1.1 INTENDED USE
The Impact/Impact Pro has been designed to alert the user to
potentially hazardous atmospheres whilst carrying out his/her
normal duties. Therefore, the instrument must be kept switched
on and worn as close to the breathing area as possible, and
several accessories are provided to allow the instrument to be
worn in a number of different ways:
a. On the chest
b. On a belt
c. Attached to a body harness
The instrument is provided with various methods to enable the user
to comply safely and easily with confined space regulations.
CAUTIONS
Hand aspirated remote sampling only provides continuous
gas readings as long as the bulb is being operated.
Zellweger Analytics recommend that the instrument be
calibrated at least every 6 months or in accordance with
customer site procedures, whichever is sooner. Correct
operation of the instrument should be confirmed with test
gas of known concentration before each use.
channel if
Do not calibrate the
air after the apparatus has been exposed to
concentrations above the upper limit of the measuring
range. In this case leave the instrument in clean air
overnight before calibration.
The calibration interval for the
1 month.
The use of Enforcer calibration accessory is strongly
recommended as it enables this to be performed quickly
and easily.
CO
2
CO
2
is indicated in clean
CO
2
CO
sensor shall not exceed
2
WARNING
A sensor which cannot be calibrated or which is found to be
out of tolerance should be replaced immediately. For the
disposable cartridge a replacement cartridge must be fitted.
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1. Buttons
2. Pump Aperture
3. Cartridge and
Filter Cover
4. Audible Aperture
5. Grille Cover Screws
6. Certification Label
7. Battery Covers
8. Data Connector
9. Tool
9
8
2
3
4
5
1
7
6
▲ (yellow) Moves up through
menu screens, and used to
increase values
✔ (green) used as ‘OK’ in
menus. Accepts alarms,
and resets peak values
(red) On/Off button.
Also used as ‘change’ in
menus.
▼ (yellow) Moves down
through menu screens, and
used to decrease values
2302M5030
1. INTRODUCTION
1.2 PRODUCT OVERVIEW
On the top of the unit are four buttons (1). Their functions are
summarised below:
Pressing any key will automatically activate the display
backlight for 10 seconds.
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1. INTRODUCTION
There are currently two types of instrument available - Impact
and Impact Pro. The main differences between the two
instruments is that the Impact Pro supports a range of
Serviceable Cartridges (see Section 8.1 Serviceable
Cartridges of this manual). The other detail differences are the
addition of an internal sample pump, vibrating alarm and
Safelink feature.
The instrument can be further personalised by use of the
Impact Configuration Utility (ICU) PC software, which can be
purchased separately as part of the Data Logging Kit. This
allows the user to change various settings and features of the
instrument including, but not limited to Alarm Levels, Autozero
function, latching alarms, vibrating alarm (where fitted), data
logging settings and Safelink messages.
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2. GETTING STARTED
2. GETTING STARTED
2.1 HOW TO TURN IMPACT/IMPACT PRO ON
AND OFF
The Impact has been designed for ease of use, and especially
for one-handed operation - only a single button is needed to
turn it on and off.
• To turn the instrument on, press the button until the
instrument activates its audible and visual alarms. It will
follow the start-up sequence described in Section 3.
INSTRUMENT START-UP.
If the instrument displays an error that no cartridge is fitted
then follow the procedure in Section 2.2 Inserting the cartridge.
• To turn the instrument off, press and hold the button for
three seconds, until it switches off. Note that on some
models a password must be entered to switch the unit off.
Failure to enter the correct password will cause the
instrument to continue as though the button had not
been pressed.
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2. GETTING STARTED
21
2.2 INSERTING THE CARTRIDGE
(1) If the instrument is switched on then switch it off by
pressing and holding the button. Note: if a cartridge
is already fitted, check that the instrument clock is
correct. If it is not, change the instrument clock as
described in section 4.1.1.
(2) Undo the two grille cover screws (5).
(3) If a cartridge is already fitted then remove it by undoing
the central screw.
(4) Insert new cartridge into aperture as shown. Ensure that
the point ‘★’ is located correctly in the pump or moulding
(depending on model).
(5) Gently tighten up the central screw to secure in place.
(6) Check the condition of the filter on the grille cover (3),
and if necessary, replace it.
(7) If the unit is fitted with a pump replace the pump seal.
★
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2. GETTING STARTED
22
(8) Replace the front cover, and retighten the two screws
(5).
(9) Wait at least 20 minutes. Then switch the Impact on by
pressing the button and check no faults are reported
by the instrument. If fault 4 occurs refit the cartridge.
(10) Once the new cartridge is fitted the instrument will
compare it to the cartridge fitted previously. The
instrument will alert the user with warning if:
a) the alarm levels are different
b) the number of sensors is different
c) the mix of the sensors is different.
(11) If the instrument reports a gas alarm, switch instrument
off, wait 20 minutes, and switch unit on again.
2.3 CHARGE FOR FIRST USE
Either a rechargeable battery pack or a dry-cell battery source
can power the Impact. For the rechargeable battery it must be
charged before first use, to replace any battery capacity used
during transit and storage.
(1) Ensure the basestation is connected to a suitable power
source.
(2) Place the instrument in the basestation.
The basestation employs a locking mechanism to
ensure that the Impact is retained under most operating
conditions. To ensure this operates correctly the
following procedure should be followed:
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2. GETTING STARTED
23
a) Ensure that the Impact is orientated such that the
instrument lip will be inserted under the locking lip.
b) Insert the front of the Impact at an angle such that
the instrument lip slides under the locking lip
.
Instrument lip
Locking lip
Front
Front
Rear Front
Closeup detail
MAN0597 ISSUE 09 - 12/05
(Disengaged) Rearlocking catch (Engaged)
2302M5030
2. GETTING STARTED
c) Push down on the rear of the Impact such that the
rear locking catch engages.
d) To remove the Impact press down on the rear
locking catch.
All 4 alarm lights will flash indicating the Impact has
started charging.
(3) Whilst charging the instrument, the instrument will flash
2 red LEDs approximately every 2 seconds. When
charging is complete it will light the green LEDs
constantly. A pair of fully discharged battery packs will
require 7 hours to recharge fully.
WARNING
Do not charge the battery pack in a hazardous area.
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2. GETTING STARTED
2.4 DRY-CELL BATTERY INSERTION
+
+
(1) Undo the two battery compartments (7) using the tool
(9) provided, on the bottom of each instrument.
(2) Release each dry-cell battery holder and remove the
cells if fitted.
(3) Insert new cells, ensuring correct orientation by
checking that the negative terminal is at the same end
as indicated on the moulding. Ensure they are of the
correct type, to comply with the intrinsic safety
requirements.
(4) Replace dry-cell holders in the battery compartments,
and retighten cover screws.
(5) Instrument is now ready for use.
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+
+
+
+
+
2302M5030
2. GETTING STARTED
2.5 SAMPLING
In normal operation the Impact is worn on the belt, with its
harness, or held by hand. Once turned on the Impact monitors
the atmosphere continuously, which reaches the sensors by
diffusing through the vents of the grille cover or by being pulled
through by the internal pump (if fitted). For non-pump
instruments normal air movements are sufficient to carry the
sample to the sensors, and the sensors react immediately to
changes in concentrations of the gases being measured in the
atmosphere immediately surrounding the detector. Depending
on your application and the options fitted to the instrument the
environment can be sampled remotely in a variety of ways, as
summarised below:
No pump Flow hood Hand
With pump Pump adaptor Sampling 1m
aspirator
Sampling Ball float
tube
tube sensing
probe
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2. GETTING STARTED
27
CAUTIONS
Hand aspirated remote sampling only provides continuous
gas readings while the bulb is being squeezed. Each time
a reading is required, it is necessary to squeeze the bulb
at a rate of one per second until the readings remain
stable.
When using the built-in pump ensure that the sampling
tube is not inserted into a fluid.
MAN0597 ISSUE 09 - 12/05
English
Language
French
Italiano
Deutsch
Español
French
Language
Deutsch
Español
Italiano
Nederlands
Flammable Gas
Methane
Oxy Flam
CO H2S
Calibration Due
in 120 days
2302M5030
3. INSTRUMENT START-UP
3. INSTRUMENT START-UP
3.1 INSTRUMENT INFORMATION
After turning the instrument on it will display the information in
the following autosequence (depending on model):
The first display identifies the model.
Whilst this is shown the alarms are
tested, If a vibrating alarm is fitted this
is also activated. Whilst this screen is
displayed, pressing the button will
cause the instrument to identify the
version of software installed and the
instrument serial number.
A Language Selection Screen is then
shown (first use only). Use the
▲ and
▼ buttons to highlight the required
language and press the
✔ key to
make the selection. Note that some of
the languages may be 'off screen' use the
▲ and ▼ buttons to access
these.
The language can be changed at a
later time, if required. See section
4.7.6 for details.
The display then shows the gas that
the flammable sensor is set to
monitor, the sensors fitted and when
the calibration is due (if the calibration
is due in less than 30 days).
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Location
Default Location
Operator
Default Operator
✓ - OK
- Change
Zero sensors?
✓ - OK
- No
2302M5030
3. INSTRUMENT START-UP
The instrument logs data on the
operator’s exposure, if any, to
measured toxic gases. It achieves this
by requesting the operator to confirm
his/her identity and the location where
the instrument is being used. The
screen displays the last location and
operator. If these are acceptable then
press the
✔ button. Otherwise select
a new location and/or operator.
3.2 SELECTING LOCATION / OPERATOR
To change the location and/or operator press the button
and the display will show the current location. Press the
▼ buttons to cycle through the list. Once the correct location
has been found then press
✔, and follow the same procedure
to select the operator.
▲ and
3.3 FRESH AIR AUTO ZEROING SENSORS
If enabled the instrument will prompt if
you wish to zero the sensors in fresh
air, to adjust for any natural drift that
may have occurred. If the ✔ button is
pressed the instrument will then ask
the user to ensure that it is being
zeroed in fresh, uncontaminated air.
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MAN0597 ISSUE 09 - 12/05
Are you in
fresh air?
✓ - Yes, - No
2302M5030
3. INSTRUMENT START-UP
If the ✔ button is pressed the
Note: This is a ‘soft’ zero. Any adjustments only remain in
force whilst the instrument is switched on. To
permanently adjust the zero, the zero via the calibration
menu must be used (‘hard zero’).
instrument will zero the sensors
automatically, and display whether the
procedure was successful. The
oxygen reading will be adjusted to
20.9%v/v – the other sensor readings
will be adjusted to 0 ppm and 0%lel
appropriately. If the button is
pressed instead the instrument will
use its current zero values instead
and proceed to the monitoring screen.
3.4 SENSOR WARM-UP PHASE
Following display of the Autozero screen it will be noted that
the message 'Cell Self Test Please Wait' is displayed. This is
displayed while the sensors are in the warm-up phase of the
start-up procedure. If the option of Autozero is declined the
main gas measuring screen will be displayed with the
message 'Warm Up' being displayed in place of the gas
concentration readings. The instrument should not be used
until the 'Warm Up' message has disappeared. The amount of
time that the sensors are in warm up will depend on the sensor
type. Table 12.3.1 in section 12 of this manual gives details of
the warm up times for each of the sensors.
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