Ion Science MVI User Manual

Unrivalled Detection. www.ionscience.com

MVI

Instrument User Manual V2.1

Register your instrument online for extended warranty

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.

To receive your extended warranty, you must register your instrument online

within one month of purchase (terms and conditions apply.)

Visit www.ionscience.com/instrument-registration

Part number: 26002

MVI MANUAL Ion Science Ltd

Unrivalled Detection. www.ionscience.com

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

Page 3 of 23

MVI MANUAL Ion Science Ltd

Unrivalled Detection. www.ionscience.com

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

Page 4 of 23

MVI MANUAL Ion Science Ltd

Unrivalled Detection. www.ionscience.com

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.

Page 5 of 23

MVI MANUAL Ion Science Ltd

Unrivalled Detection. www.ionscience.com

USA Office

Ion Science LLC
33 Commercial Drive
Waterbury
VT 05676
USA

Tel: [phone]
Fax: [phone]
Email: [e-mail]
Web: www.ionscience.com

UK Head Office

Ion Science Ltd
The Way, Fowlmere
Cambridge
SG8 7UJ
UK

Tel: [phone]
Fax: [phone]
Email: [e-mail]
Web: www.ionscience.com

German Office

Ion Science Messtechnik GMBH
Laubach 30
Metmann-Neandertal
40822
GERMANY

Tel: [phone]
Fax: [phone]
Email: [e-mail]
Web: www.ism-d.de

Statements

Warranty

Standard Warranty can be extended to up to 2 years on the MVI when registering your
instrument via our website: www.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:

www.ionscience.com/instrument-registration

Contact Ion Science Limited

Page 6 of 23

MVI MANUAL Ion Science Ltd

Unrivalled Detection. www.ionscience.com

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/m3 with a resolution of 0.1 µg/m3

0-2000 µg/m3 with 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.

Page 7 of 23