Category: Industry Trends

Service duration

Typically 1 day on-site to inspect the roll force measurement installation, evaluate and give

recommendations if further actions are needed.

During at least 4 hours, load cells and pressure plates need to be accessible outside the mill stand

for inspection and testing. This can be done during a planned maintenance stop, or by the customer

exchanging to spare load cells and spare pressure plates in the mill stand in advance.

Additional time for travel, preparation, analysis and reporting is needed.

Note: Free access to the mechanical parts and the mounting surfaces 

in the actual mechanical installation is essential for achieving

the expected goals with the Health Check during the site visit. The

accessible parts required for different load cell types and positions

in the mill stand are listed below.

Installations with rectangular load cells below the lower back up roll or above the upper back up roll:

Accessible parts: Mounting surfaces in the mill stand, the sledges if present, the rockers,

the pressure plates closest to the load cells and

intermediate mating plates if present.

Get the competitive edge through the Millmate Roll Force System health check.

Measurement made easy.

Overview

Millmate Roll Force System Health check is a detailed and comprehensive inspection and

status evaluation of a roll force measurement installation.

It is a key service to ensure and verify the actual roll force measurement accuracy to avoid future

interruptions in the production. All findings are documented in a roll force system health check

report and the recommendations can be used to secure measurement accuracy and availability,

mill performance and yield.

Features

Check of:

• Millmate Roll Force System Basics

• Millmate Controller

– Errors, warnings, alarms and info check

– Software version

• Matching unit(s)

• Mechanical installation

• Load cell insulation resistances

• Recommended spares

Benefits

• Verifies the functionality of the roll force system and identifies shortcomings which might affect

the measuring accuracy of the system

• Secure roll force measurement performance availability, reliability and production yield

• Minimizes risk of failures

• Reduces mill maintenance costs

Electrical safety to U.S. and Canadian standards – UL, CSA

The LS4000 and LS4060 gas analyzers are certified for use in

general purpose environment, evidenced by full compliance

with standards CAN/CSA-C22.2 No. 61010-1-12 and UL Std.

No. 61010-1 (3rd Edition).

Certificate No. 70001037

Explosion protection to European standards – ATEX

The LS4060 gas analyzer (transmitter and receiver unit) in the

version for use in zone 1 satisfies the European standards

EN 60079-0:2011. EN 60079-1:2007. EN 60079-28:2007.

EN 60079-31:2009.

Designation:

II 2(1)G Ex d [op is Ga] IIC T6 Gb

II 2D Ex tb IIIC T88°C Db

EC-Type examination certificate No. BVS 13 ATEX E 008 X

The LS4060 gas analyzer (transmitter and receiver unit) in the

version for use in zone 2 satisfies the European standards

EN 60079-0:2011. EN 60079-1:2007. EN 60079-28:2007.

EN 60079-31:2009.

Designation:

II 3(1)G Ex d [op is Ga] IIC T6 Gc

II 3D Ex tc IIIC T88°C Dc

Certification by manufacturer’s declaration

Explosion protection to international standards – IECEx

The LS4060 gas analyzer (transmitter and receiver unit)

satisfies the European standards EN 60079-0:2011.

EN 60079-1:2007. EN 60079-28:2006. EN 60079-31:2008.

Certifications

CE conformity

The LS4000 and LS4060 gas analyzers satisfy the require

ments of the European directives 2006/95/EC Low voltage

directive, 2004/108/EC EMC directive and 94/9/EC ATEX

directive.

Compliance with the requirements of directive 2006/95/EC is

evidenced by full compliance with European standard

EN 61010-1:2010.

Compliance with the requirements of directive 2004/108/EC

is evidenced by full compliance with European standards

EN 61326-1:2006. EN 61000-3-2:2006 + A1:2009 +A2:2009.

EN 61000-3-3: 2008.

Compliance of the explosion protected versions type LS4060

with the requirements of directive 94/9/EC is evidenced by full

compliance with the European standards listed in the

“Explosion protection to European standards – ATEX” section.

Electrical safety to IECEE CB scheme

The LS4000 and LS4060 gas analyzers are certified to the

„IEC system for mutual recognition of test certificates for

electrical equipment“, evidenced by full compliance with

standard IEC 61010-1 (Ed. 3).

CB Test Certificate No. DE1-52306

Technical data

Sample components and measurement ranges

Sample component

O2

Min./max. measurement range

0–1/100 vol.%

Max. abs. pressure

2 bar (29 psi)

2 to 20 bar (29 to 290 psi) on request

Max. temperature

1500 °C (2732 °F)

Measurement range quantity

1 physical measurement range per sample component,

1 x transmission

Optical path lengths (OPL)

Standard optical path lengths

0.5 to 20 m. Other optical path lengths on request.

Remarks

– The analyzer performance characteristics have been

determined according to IEC 61207-1:2010 “Expression of

performance of gas analyzers– Part 1: General”. They are

based on nitrogen as the associated gas. Compliance with

these characteristics when measuring other gas mixtures

can only be assured if their composition is known.

– All specifications refer to an optical path length (OPL) of

1 meter, tested in ABB’s test and calibration jig. However,

application-dependent variations may occur. The specific

detection limit, minimum and maximum measurement range

for a specific application will depend on the gas conditions

(pressure, temperature and gas composition) and optical

path length. Minimum measurement range, maximum

pressure and maximum temperature cannot necessarily be

realized simultaneously under all conditions.

– The maximum pressure and maximum temperature given

are physical (spectroscopic) limits.

– Applications exceeding the above given spectroscopic

limitation might be possible on request.

Introduction

Application and design

The LS4000 is an in situ cross-duct analyzer for measuring

gas component concentrations. It applies the highly selective

optical measuring principle of tunable diode laser (TDL) ab

sorption spectroscopy. The LS4000 is a stand-alone system

and is approved for use in hazardous areas according to

international standards.

The analyzer consists of a transmitter unit with a laser light

source and a receiver unit with a photodetector. Both units are

mounted opposite each other on the process pipe or stack

and are connected by a junction box.

Measurement principle – TDLAS

The LS4000 employs the optical measuring technique of

absorption spectroscopy, which utilizes the fact that a specific

gas absorbs specific light wavelengths.

The light beam is emitted from a tunable laser diode located in

the transmitter unit. The laser light passes through the process

gas and strikes the photodetector in the receiver unit. The

measured gas component present in the optical path absorbs

the laser light, attenuating the light received.

A sophisticated signal algorithm processes the amount of light

attenuation and calculates the gas concentration on the basis

of the Beer-Lambert law. The influence of temperature and

pressure variations is eliminated by dynamic automatic correction.

Measurement made easy

Highest precision under harshest conditions

High precision

– Lowest detection limits, highly accurate measurements

– Highly selective, virtually cross interference free

Suitable for harsh process conditions

– In-situ, direct measurement of hazardous gas streams

– For high pressure, high temperature applications

Fast and direct

– In-situ, no sample transport or conditioning

– Fast response

Safe, compact and easy

– Flameproof housing (Ex-d), no purging

– No nitrogen purging for oxygen measurement

– Compact and lightweight, insensitive to vibrations

– Ease of maintenance

How it works – measuring principle

The LS4000 employs the optical measuring technique of absorption spectroscopy, which utilizes the fact

that a specific gas absorbs specific light wavelengths.

The light beam is emitted from a tunable laser diode located in the transmitter unit.

The laser light passes through the process gas and strikes the photodetector in the receiver unit.

The measured gas component present in the optical path absorbs the laser light, attenuating the light

received.

A sophisticated signal algorithm processes the amount of light attenuation and calculates the gas

concentration on the basis of the Beer-Lambert law.

The influence of temperature and pressure variations is eliminated by dynamic automatic correction.

Sample components and measurement ranges

The LS4000 laser analyzer has one physical measurement range per sample component.

O2 from 0…1 to 0…100 Vol%

Typical applications

− Process and safety monitoring

− Combustion control

− Control of flue gas abatement equipment (e.g. ammonia slip measurements)

− Emission monitoring

Typical industries served

− Chemical and petrochemical industry

− Power industry

− Iron and steel industry

International certifications

− ATEX Zone 1

− IECEx Zone 1

− CSA Class I, Division 1