ION Mercury Vapour Indicator User manual

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MVI
Instrument User Manual V2.1R

Part number: 26002
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Thank you for purchasing your Ion Science instrument.
The standard warranty of your instrument can be extended to up to five years on
PhoCheck Tiger and two years on other Ion Science instruments.
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one month of purchase (terms and conditions apply.)
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MVI MANUAL Ion Science Ltd
Page 3 of 23
EU Declaration of conformity
Manufacturer: Ion Science Ltd (original manufacturer was Shawcity Limited, Pioneer Road,
Faringdon, Oxon., SN7 7BU who are a wholly owned subsidiary of Ion Science Ltd)
Product: MVI Mercury Vapour Indicator
Product Description: Hand held detector comprising dual beam UV absorption module for the detection of
Mercury vapour
EMC Directives: 83/336/EEC
91/263/EEC
92/31/EEC
Standards Applicable: EN 55022: 1987 Class B
EN 50082-1: 1992 Table 1
Date of Issue: 8th January 1996
On behalf of Shawcity Limited, I hereby certify that the listed apparatus conforms to the protection requirements of
the EMC Standards listed above.
David Hughes
Technical Manager
Shawcity Ltd

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MVI MANUAL Ion Science Ltd
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Contents
Declaration of conformity..................................................................................................................................... 3
Statements........................................................................................................................................................... 5
Responsibility for Use.......................................................................................................................................................5
Warnings ..........................................................................................................................................................................5
Quality Assurance.............................................................................................................................................................5
Disposal ............................................................................................................................................................................5
Calibration and Repair Facility .........................................................................................................................................5
Training.............................................................................................................................................................................5
Legal Notice......................................................................................................................................................................5
Warranty ..........................................................................................................................................................................6
Contact Ion Science Limited.............................................................................................................................................6
Introduction......................................................................................................................................................... 7
Principle of Operation ......................................................................................................................................................7
Specification......................................................................................................................................................... 8
Packing list........................................................................................................................................................... 9
Description..........................................................................................................................................................10
Operating controls...............................................................................................................................................11
Battery charging ..................................................................................................................................................14
Recharging......................................................................................................................................................................15
Preparing the MVI for use....................................................................................................................................16
Interferences.......................................................................................................................................................18
User maintenance ...............................................................................................................................................19
Filter Replacement .........................................................................................................................................................19
Alarm Level.....................................................................................................................................................................20
MVI Health Check...........................................................................................................................................................20
Consumable items...............................................................................................................................................21
Calibration and repair..........................................................................................................................................22
Manual log..........................................................................................................................................................23

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MVI MANUAL Ion Science Ltd
Page 5 of 23
Statements
Responsibility for Use
Inadequate performance of the gas detection equipment described in this manual may not necessarily be self-evident
and consequently equipment must be regularly inspected and maintained. Ion Science recommends that personnel
responsible for equipment use institute a regime of regular checks to ensure it performs within calibration limits, and
that a record be maintained which logs calibration check data. The equipment should be used in accordance with this
manual, and in compliance with local safety standards.
Warnings
Mercury amalgamates with gold, silver, stainless steel, aluminium and copper alloys. Accidental trapping of Mercury
can cause serious damage to vital parts of electronic equipment and delicate instruments. Mercury is also toxic if
inhaled, ingested or absorbed through the skin or eyes. Care must always be exercised when handling Mercury.
The MVI employs an internal Ultra-Violet light source operating in the 254 nm region. Ultra-Violet radiation is
dangerous and if for any reason the lamp is operated whilst exposed, UV protective glasses must be worn.
High voltages are used in this instrument and the cover should only be removed by qualified technicians.
Ion Science Limited can accept no responsibility for the incorrect use of the instrument that cause harm or damage to
persons or property. It is the user’s responsibility to appropriately respond to the readings given.
Quality Assurance
Ion Science Limited is an ISO 9001:2008 accredited company.
Disposal
Please dispose of the MVI, its components and any used batteries in accordance with all local and national safety and
environmental requirements. This includes the European WEEE (Waste Electrical and Electronic Equipment) Directive.
Ion Science Limited offers a take back service. Please contact us for more information.
Calibration and Repair Facility
Ion Science Limited offer a repair and calibration service. Please contact us for more information:
Training
Ion Science would be happy to provide training in the operation and maintenance of the MVI. Please contact us
should this be of interest.
Legal Notice
Whilst every attempt is made to ensure the accuracy of the information contained in this manual, Ion Science accepts
no liability for errors or omissions, or any consequences deriving from the use of information contained herein. It is
provided "as is" and without any representation, term, condition or warranty of any kind, either express or implied. To
the extent permitted by law, Ion Science shall not be liable to any person or entity for any loss or damage which may
arise from the use of this manual. We reserve the right at any time and without any notice to remove, amend or vary
any of the content which appears herein.

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MVI MANUAL Ion Science Ltd
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Statements
Warranty
Standard Warranty can be extended to up to 2 years on the MVI when registering your instrument via
our website: ionscience.com/instrument-registration
To receive your Extended Warranty, you need to register within one month of purchase (Terms and
Conditions apply). You will then receive a confirmation email that your Extended Warranty Period has
been activated and processed.
Full details, along with a copy of our Warranty Statement can be found by visiting:
ionscience.com/instrument-registration
Contact Ion Science Limited
USA Corporate HQ
Ion Science Inc
33 Commercial Drive
Waterbury
VT 05676
USA
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Web: ionscience.com
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Ion Science Messtechnik GMBH
Laubach 30
Metmann-Neandertal
40822
GERMANY
Tel: [phone]
Fax: [phone]
Email: inf[email protected]
Web: ism-d.de
Italian Office
Ion Science Italia
Via Emilia 51/c
40011 Anzola Emilia
Bologna
ITALY
Tel: [phone]
Fax: [phone]
Email: inf[email protected]
Web: ionscience.it
UK Head Office
Ion Science Ltd
The Hive, Butts Lane,
Fowlmere,
Cambridge
SG8 7SL
UK
Tel: [phone]
Fax: [phone]
Email: inf[email protected]
Web: ionscience.com

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MVI MANUAL Ion Science Ltd
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Introduction
The Mercury Vapour Indicator (MVI) is primarily used to monitor environments where Mercury or any of the Mercury
compounds are produced, processed or stored and applications where Mercury vapours may pose a health hazard to
personnel.
Units of measurement used for detecting Mercury vapour are micrograms/cubic metre expressed as µg/m3.
The MVI has two manually switched ranges of measurement:
0-200 µg/m3with a resolution of 0.1 µg/m3
0-2000 µg/m3with a resolution of 1 µg/m3
Principle of Operation
A sample of the immediate atmosphere under investigation is drawn by the pump into a glass sampling cell where a
Ultra-Violet light source is absorbed by the sample. Photodiode detectors are used to measure the intensity of
radiation passing through the sample chamber. The optical system is designed specifically to detect Mercury in the
Ultra-Violet region of 254 nm.
The presence of Mercury vapour will reduce the radiation energy reaching the photodiode detector in proportion to
the vapour concentration. This change is then converted into an electrical signal and conditioned to provide a linear
reading on the front LCD as µg/m3.
An audible alarm is fitted which gives warnings when preset conditions are achieved.

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MVI MANUAL Ion Science Ltd
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Specification
Function Surveying atmospheres for Mercury (Hg) concentrations below and above
the accepted exposure limit
Detector Dual beam Ultra-Violet absorption module
Measuring Ranges 0.1-199.9 and 1.0-1999 µg/m3(user controlled)
Sensitivity 0.1 µg/m3and 1.0 µg/m3
Accuracy ± 5 micrograms or ± 10% of reading
Repeatability ± 5% FSD
Response Time Approximately 3 seconds
Temperature Range +10°C to +50°C
Battery Type 15 Volt NiMH rechargeable
Battery Life Greater than 6 hours after full charge
Dimensions 145 x 295 x 80 mm (120 mm with handle)
Weight 5 lb 3 oz (2.35 kg)
Linearity Higher than 5% from 0 to 500 µg/m3
Zero Drift Less than 5 µg/hour
Alarms Audible alarm factory preset to 20 µg/m3
Datalogger 0-2 volt for use with a datalogger (not supplied)
Operation After a short warm up the MVI gives real time indication of Mercury vapour
levels through the PTFE probe

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MVI MANUAL Ion Science Ltd
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Packing list
The MVI is sent to you packaged in a lightweight, waterproof structural resin instrument case with foam insert.
Contents should be carefully removed and checked against the packing list. Any discrepancies between the contents
and packing list must be reported to Ion Science Limited within 10 days of receipt of shipment. Ion Science cannot be
held responsible for shortages not reported within that period.
Item Description Quantity
1 MVI instrument 1
2 MVI battery charger 1
3 Charcoal in line filter 1
4 PTFE probe and filter assembly 1
(including 10 water trap filters)
5 MVI operation manual 1
6 Explorer case with foam inserts 1
2
3
1
6
5
4

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MVI MANUAL Ion Science Ltd
Page 10 of 23
Description
The Mercury Vapour Indicator (MVI) is a compact, self contained and completely portable instrument which indicates
the amounts of Mercury in micrograms/cubic metre.
The indicating digital display and carrying handle are mounted on the top cover. A female luer connector is provided
at the end of the instrument to accommodate a dust and water trap filter with PTFE extension probe. In addition, a
length of flexible tubing may be connected to the filter for greater convenience when checking floor areas or gratings.
The internal Nickel Metal Hydride battery is rechargeable using a plug-in battery charger. The operating time when
fully charged is greater than 6 hours. Warm up time is approximately 10 minutes and direct readings are indicated on
an easy to read LCD display.
The audible alarm provides warning of three pre-defined conditions:
Condition Audible Signal
1. High Mercury vapour concentration greater than 20 µg/m3Slow pulse (1/sec)
2. Negative reading from -20 to -25 µg/m3 and lower Continuous tone
3. Low battery Fast pulse (3/sec)
The audible alarm is inhibited during the first 5 minutes of operation.