Zellweger MINIGAS MK5 Manuale utente
This publication is not intended to form the basis of a contract, and the company reserves
the right to amend the design and specification of the instruments without notice.
Distributor:
A company of the Zellweger Luwa Group
Manufactured By Zellweger Analytics Ltd, Poole Dorset, UK
MEMBERS OF THE ZELLWEGER ANALYTICS DIVISION
total environmental solutions
service manual
INTERNATIONAL ENQUIRIES
Zellweger Analytics Limited
Hatch Pond House
4 Stinsford Road
Nuffield Estate
Poole
Dorset
BH17 0RZ, UK
Tel: +44 (0) 1202 676161
Fax: +44 (0) 1202 678011
Email: postmaster@zellweger-
analytics.co.uk
Sales enquiries:
+44 (0) 1202 675900
Service enquiries:
+44 (0) 1202 645772
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HEADQUARTERS
Zellweger Luwa AG
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CH-8610 Uster
Switzerland
Tel: +41 1943 2211
Fax: +41 1940 7079
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Singapore 639098
Tel: +65 862 7701/2/3
Fax: +65 862 3858
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Toll Free: +1 800 535 0606
Fax: +1 770 967 1854
MAN0588.P65 Issue 01 - 04/00
2987M5025
MULTIPLE DISPLAY 4-IN 1 GAS
MONITOR
MAN0588.P65 Issue 01 - 04/00
2987M5025
MINIGAS MK5
MAN0588.FM5 ISSUE 01 - 04/00
2987M5025
2
INSTRINSIC SAFETY APPROVAL
The Mini
g
as Mk5 has been approved as intrinsicall
y
safe b
y
authorities throu
g
hout
the world. It is important that, as a matter of safet
y
, the conditions of those
approvals are maintained.
The followin
g
warnin
g
was issued b
y
BASEEFA and appeared in the EECS
News
(
No. 14
)
dated April 1991:
"With re
g
ard to repairs, the owner of the e
q
uipment is responsible for ensurin
g
that the repairs are carried out in such a wa
y
that the explosion protection
measures incorporated in the e
q
uipment remain in compliance with the
appropriate standards. Not onl
y
should a competent repairer be used, but also
the specification for the repaired e
q
uipment should ideall
y
be obtained from the
manufacturer. Unless the repairs are carried out b
y
a manufacturer who holds
an appropriate EECS licence, we
(
BASEEFA
)
can offer no assurance with
re
g
ard to the
q
ualit
y
of the work done."
The followin
g
warnin
g
, applicable to intrinsicall
y
safe instruments, was issued
b
y
CoGDEM in October 1992:
CoGDEM
THE COUNCIL OF
GAS DETECTION EQUIPMENT MANUFACTURERS
WARNING
This is a certified product. Service, repair or calibration other than b
y
the
manufacturer or a manufacturer’s recommended a
g
ent ma
y
cause invalidation
of certification, warrant
y
, and result in a safet
y
hazard.
CONFORMITY WITH EUROPEAN
DIRECTIVES
Within the European Union, the CE mark is used in to show conformit
y
with
applicable New Approach Directives specif
y
in
g
the health and safet
y
re
q
uirements.
These re
q
uirements include EMC and ESD standards. Within the limits of EMC
Directive 891336/EEC, the desi
g
n of the Mini
g
as Mk5 has been tested to EN50
082-2: 1995 to ensure that it has ade
q
uate immunit
y
to RFI and ESD encountered
in recommended applications.
Similarl
y
, tests have been carried out to EN55 022: 1995 Class B to ensure that the
Mini
g
as Mk5 does not produce electrical interference.
MAN0588.FM5 ISSUE 01 - 04/00
2987M5025
3
WARNINGS AND CAUTIONS
WARNING
The Mini
g
as Mk5 is to be serviced and the battery char
g
ed only in
a safe area.
Substitution of components may impair the intrinsic safety of the
Mini
g
as Mk5 - replacement parts must be approved by Zellwe
g
er
Analytics. This applies to all parts, includin
g
sensors, components
and accessories.
CAUTION
The Mini
g
as Mk5 must be serviced only by qualified personnel
trained by Zellwe
g
er Analytics, or by a Zellwe
g
er appointed a
g
ent.
Manual must be read and fully understood before servicin
g
the
Mini
g
as Mk5.
Note:Failure to observe and abide by the above warnings and
cautions may render the intrinsic safety approval void and may
remove any right of claim against Zellweger relating to product
liability or consequential damage to any third party.
CAUTION
The followin
g
g
ases or substances may contaminate the
Mini
g
as Mk5 explosive sensor:
Silicones
Halo
g
ens (>100 ppm)
Halo
g
enated hydrocarbons
Phosphorous-containin
g
compounds
Sulphur containin
g
compounds (>100 ppm)
Volatile or
g
anometallics
If the Mini
g
as Mk5 has been exposed to any of the above
contaminatin
g
g
ases or substances, carry out the calibration
check described in Chapter 6.
MAN0588.FM5 ISSUE 01 - 04/00
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4
WARNINGS AND CAUTIONS
Zellwe
g
er Analytics Limited reserve the ri
g
ht to chan
g
e or revise the
information supplied in this document without notice and without
obli
g
ation to notify any person or or
g
anisation of such revision or
chan
g
e.
HELP US TO HELP YOU
Every efforthas been made to ensure the accuracy in the contents of
ourdocuments,however,Zellwe
g
erAnalytics Limitedcanassume no
responsibility for any errors or omissions in our documents or their
consequences.
Zellwe
g
er Analytics Limited would
g
reatly appreciate bein
g
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 followin
g
form for you
to photocopy, complete and return to us so that we may take the
appropriate action.
MAN0588.FM5 ISSUE 01 - 04/00
2987M5025
5
HELP US TO HELP YOU
To: Marketin
g
Communications,
Zellwe
g
er Analytics Limited,
Hatch Pond House,
4 Stinsford Road,
Nuffield Estate,
POOLE. Dorset.
BH17 0RZ.
United Kin
g
dom.
Tel : +44 (0) 1202 676161
Fax : +44 (0) 1202 678011
email : marcom@zellwe
g
er-
analytics.co.uk
From :
Address :
Tel :
Fax :
email :
I su
gg
est the followin
g
corrections/chan
g
es be made to Section ...........
Marked up copies attached (as appropriate): Yes / No
Please inform me of the outcome of this chan
g
e: Yes / No
For Marketin
g
Communications, Zellwe
g
er Analytics Limited:
Actioned By: Date:
Response: Date:
MAN0588.FM5 ISSUE 01 - 04/00
2987M5025
6
MAN0588.FM5 ISSUE 01 - 04/00
2987M5025
7
CONTENTS
section
1. GENERAL DESCRIPTION 13
1.1 MINIGAS Mk5 MULTI-GAS MONITOR 13
1.1.1 Identification usin
g
the part number and serial
number 13
1.2 ASSOCIATED EQUIPMENT 15
1.2.1 Battery char
g
er 15
1.2.2 Oxy
g
en sensor 17
1.2.3 Explosive-
g
as sensor 17
1.2.4 Microprocessor and associated circuits 18
1.2.5 TXD/RXD port 18
1.2.6 Datalo
gg
in
g
circuit 19
1.2.7 Display module 19
1.2.8 Power supply 19
1.3 GENERAL DESCRIPTION - BATTERY PACKS 19
1.4 GENERAL DESCRIPTION - BATTERY CHARGERS 20
1.4.1 Fast char
g
er 21
1.4.2 Trickle char
g
er 22
1.4.3 Fuses 23
2. TOOLS AND TEST EQUIPMENT 25
2.1 TOOLS 25
2.2 TEST EQUIPMENT 25
2.2.1 Common test equipment 25
2.2.2 Special-to-type test equipment 26
2.2.3 Reconfi
g
uration equipment 27
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CONTENTS
8
3. FAULT DIAGNOSIS 29
3.1 INTRODUCTION 29
3.2 SELF TESTS 29
3.2.1 Initial checks 30
3.2.2 Fault codes 33
3.2.3 Low battery fault 33
3.2.4 Datalo
gg
in
g
warnin
g
s33
3.3 ELECTRICAL TESTS - MINIGAS Mk5 34
3.3.1 Battery power supply 35
3.3.2 Power consumption 35
3.3.3 Power maintain ' circuit power and reference
supplies 36
3.3.4 Switches 37
3.3.5 Toxic-
g
as channels 37
3.3.6 Oxy
g
en channel 37
3.3.7 Explosive-
g
as channel 39
3.3.8 ADC circuit 41
3.3.9 Speaker drive 42
3.4 ELECTRICAL TESTS - BATTERY PACK 42
3.5 ELECTRICAL TESTS - FAST CHARGER 43
3.6 ELECTRICAL TESTS - TRICKLE CHARGER 45
3.7 CONNECTIONS - MINIGAS Mk5 MONITOR 52
3.8 CONNECTIONS - BATTERY PACK AND CHARGERS 55
4. MAINTENANCE 57
4.1 INTRODUCTION 57
4.2 MINIGAS Mk5 MONITOR - DISASSEMBLY AND
REASSEMBLY 57
4.2.1 Sensor
g
rill 58
4.2.2 Disassembly of the monitor assembly (Fi
g
4.3) 60
4.2.3 Reassembly of the monitor assembly (Fi
g
4.3) 62
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CONTENTS
9
4.3 SENSOR REPLACEMENT 65
4.3.1 Oxy
g
en sensor 65
4.3.2 Toxic sensors 66
4.3.3 Explosive-
g
as sensor 67
4.4 CHANGES TO THE MONITORED GASES 68
4.4.1 Oxy
g
en channel 69
4.4.2 Explosive-
g
as channel 69
4.4.3 Toxic
g
as channels 69
4.4.4 Adjustin
g
the toxic
g
as null volta
g
e70
4.5 BATTERY PACKS - DISASSEMBLY AND
REASSEMBLY 71
4.5.1 Rechar
g
eable battery packs (Fi
g
4.6) 71
4.5.2 Dry-cell battery pack (Fi
g
4.7) 72
4.6 BATTERY CHARGERS - DISASSEMBLY AND
REASSEMBLY 76
4.6.1 Fast char
g
er (Fi
g
4.8) 76
4.6.2 Trickle char
g
er (Fi
g
4.9) 80
5. SOFTWARE OPTIONS 83
5.1 INTRODUCTION 83
5.2 SPECIFYING A CONFIGURATION CODE 84
5.3 CONFIGURING A MINIGAS Mk5 84
5.3.1 Installin
g
M4CONFIG 84
5.3.2 Usin
g
M4CONFIG 85
6. TESTING AND CALIBRATION 87
6.1 INTRODUCTION 87
6.1.1 General 87
6.1.2 EasyCal provides the followin
g
facilities: 87
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CONTENTS
10
6.2 TOOLS AND TEST EQUIPMENT 88
6.3 PREPARATION FOR CALIBRATION 89
6.3.1 General 89
6.3.2 Adsorption of the Test Gas 89
6.3.3 Pur
g
in
g
the Gas Connections 90
6.4 CALIBRATION PROCEDURES 91
6.4.1 General 91
6.4.2 Enterin
g
Calibration Mode 91
6.4.3 Simultaneous Zeroin
g
92
6.4.4 Span Calibration 93
6.4.5 Calibration Failure 95
6.4.6 Stora
g
e of Calibration Results 96
6.5 POST CALIBRATION 96
6.6 SETTING GAS BOTTLE CONCENTRATIONS 96
6.7 MANUAL CALIBRATION PROCEDURE 97
6.7.1 Enterin
g
Manual Calibration mode 97
6.7.2 Oxy
g
en calibration (span) 98
6.7.3 Explosive calibration (null and span) 100
6.7.4 Explosive channel temperature compensation
and linearisation coefficients 102
6.7.5 Toxic calibration (null and span) 107
6.7.6 Manual Calibration failure 110
6.8 POST CALIBRATION 110
6.9 CALIBRATION FAILURE 110
6.10MINIGAS Mk5 - STANDARD SERVICEABILITY TEST 111
6.10.1 Gas tests 111
6.10.2 Final acceptance test 114
6.10.3 Displayin
g
the instrument serial number 116
6.10.4 Datalo
gg
in
g
warnin
g
s116
6.11FAST CHARGER - STANDARD SERVICEABILITY
TEST 117
Altri manuali per MINIGAS MK5
1
Indice
Altri manuali Zellweger Strumento di misura
