Mercury Monitor System

MMS

AMBIENT

Automatic Monitoring of Mercury in Air and other Gases



z Customized solutions



z Monitors 2 to 24 measuring points automatically



z Versions for air, hydrogen and other gases available



z Permanent purging of all sample lines



z Measuring ranges from 0.01 µg/m³ to 2000 µg/m³ Hg



z Software for data acquisition, data visualisation and storageSample dilution for high concentrations



z Automatic Calibration Module

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Applications



z Chlor-alkali plants with mercury cells



z Metallurgical industry



z Fluorescent lamp production or recycling



z Battery recycling plants



z Contaminated sites



z Hydrogen production plants



z Laboratories or processing plants working with mercury



z Natural gas industry: see brochure for natural gas systems Function

Sample gas is

continuously drawn from

each sampling point

through special tubing

to a heated multiplexer

valve unit. One sample

at a time is fed into the

Mercury Vapor Monitor

VM-3000 where the

mercury concentration is

measured. All sample lines

are permanently purged

with sample gas thus

minimizing the response

time of the system. This

method allows for sample

line lengths of 100 meters

and more.





System design

The MMS system basically comprises a multiplexer-valve unit and the

highly accurate and selective mercury detector VM-3000 Vapor Monitor.

A bypass pump maintains a steady

flow of sample through the sample

filters, sample lines and multiplexer valves. Flow meters with optical alarm sensors guarantee that flow rates are stable. All components are installed inside a protective cabinet.

A special version employing the

UT-3000 Mercury Ultratracer as

detector is available for concentrations in the sub-µg/m³ range.

Options like air conditioning assure reliable function of the system even under extreme climatic conditions.

Data output

The analyzer unit can be connected to a PC with a serial cable or optionally with a fibre optic cable for operation under harsh industrial conditions.

Modbus or ethernet communication is available.

Stand-alone operation without PC connection is also possible.

Storage of measuring data

Measurement data are stored on hard disk as ASCII- and EXCEL files. Filed data can be retrieved at any time as graphic diagrams. A friendly search function enables the user to quickly find data of selected time intervals or data exceeding a threshold value.

Self diagnosis of the system

The MMS software permanently checks the status of the system. Low flow of bypass stream or sample, plugging up of sample filters and photometer malfunctions are detected by the system and an error message is displayed. An optional calibration module allows for automatic calibration checks and re-calibrations of the system. The calibration gas is generated bymercury vapor saturation of air and automatic dilution. The mercury filling of the calibrator is sufficient for the entire lifetime of the instrument.





Software and remote control of the analyzer system The MMS-Win software allows remote control of the analyzer-multiplexer system via PC. It provides information to the operator such as: mercury concentrations for each sample point, history of measurement results for each sample point, status of the system and calibration information.

Alarm thresholds, duration of measurement for each channel, zero adjustment, specific deactivation of measuring points, can be controlled by PC.

The operator can interrupt any running measurement and select a sample point for immediate measurement. It is also possible to deactivate any sample point. Emission reports are created automatically and stored as *.txt and *.xls (EXCEL) files.

Main window of

MMS-Win

with position of

sampling points

Example: Time course of

mean Hg-concentration

channel 9

Measurement data

displayed in EXCEL

Setting of alarm thresholds





Benefits of the Mercury Monitoring System MMS

z low maintenance demand



z no sensitivity for water vapor z high stability of calibration

z quick response time

z customized software



z minimized memory effekt

Technical Specifications Mercury Monitoring System MMS

Multiplexer module

Number of sample points

2 ... 24

Purging of sample lines:

continuously, approx. 40 - 80 l/h for each channel Flow control:

Flow meters with alarm sensors for low flow Heating of valve unit:

approx. 70 °C

Measuring duration:

45 sec - 99 minutes, separately adjustable for each channel Detector

Measuring principle:

Cold Vapor Atom Absorption Spectrometry (CVAAS) Wavelength: 253.7 nm

Principle of preconcentration:

Amalgamation on gold surface,

(only special version with

thermal desorption by rapid heating UT-3000)

(MI GoldTrap)

Measuring ranges:

0,1 - 100 µg/m³

(standard version with VM-3000) 1 - 1000 µg/m³

1 - 2000 µg/m³

Measuring range:

(special version with UT-3000)

0,01 - 50 µg/m³

Sample flow:

approx. 80 l/h per channel

analogue: 4-20 mA

Signal output:

serial: RS 232

Modbus RTU (optional)

Ethernet (optional)

Construction, weight and Dimensions Cabinet:

metal, protection standard IP 55 (NEMA 4X, others as an option) from 553 x 600 x 500 mm (WxHxD) to 800 x 2000 x 600 mm; Dimensions:

according to number of channels and optional equipment (air conditioning)

Weight:

approx. 35 - 175 kg; depending on number of channels and optional equipment

Software

System requirements:

PC with Windows XP or higher

Display of measuring data:

current readings numerically,

filed data as concentration-time graphs





The Challenge: Mercury Analysis The Response: ENVEA GmbH

Even nowadays quantitative trace analysis of mercury is still a challenging task for the analyst. ENVEA GmbH is at all times striving to develop leading edge products for mercury analysis at the highest technical level.

The range of applications for our mercury analyzers is unique world-wide.

©2020 ENVEA GmbH, Mercury Monitoring System MMS Specifications may be subjet to change without notice ENVEA GmbH

Analytical Technologies

As a leading supplier of high precision analytical Liebigstraße 5

equipment, we strive at all times to offer top quality D-85757 Karlsfeld

solutions. Our products are manufactured according mail.mi@envea.global

to the ISO 9001 quality regulations.

Tel.: +49(0)8131 - 50 57 20

Fax.: +49(0)8131 - 50 57 22

ENVEA (Headquarters)

111 Bd Robespierre / CS 80004

78304 Poissy CEDEX 4 - FRANCE

Visit us at:

+33(0)1 39 22 38 00

www.envea.global

info@envea.global