Michell Instruments XZR400 Operating Manual

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XZR400 Series

Oxygen Analyzers

User’s Manual

97472 Issue 3

August 2018

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This document is the property of Michell Instruments Ltd. and may not be copied or

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XZR400 Series User’s Manual

Contents

Safety .............................................................................................................................. viii

Electrical Safety ......................................................................................................... viii

Pressure Safety .......................................................................................................... viii

Temperature Safety .................................................................................................... viii

Toxic Materials ........................................................................................................... viii

Repair and Maintenance ............................................................................................. viii

Calibration ................................................................................................................. viii

Safety Conformity ...................................................................................................... viii

Abbreviations ......................................................................................................................ix

Warnings ............................................................................................................................ x

1 INTRODUCTION ................................................................................................1

1.1 Operating Principle .......................................................................................... 2

1.2 The MSRS Technology...................................................................................... 3

2 INSTALLATION ..................................................................................................6

2.1 Unpacking the Analyzer ................................................................................... 6

2.2 Preparation ..................................................................................................... 6

2.3 Dimensions - XZR400A1 ................................................................................... 7

2.3.1 Installing the XZR400A1 .............................................................................. 7

2.4 Dimensions - XZR400A2 ................................................................................... 8

2.4.1 Installing the XZR400A2 .............................................................................. 9

2.5 Dimensions - XZR400A3 ................................................................................. 10

2.6 Dimensions - XZR400A4 ................................................................................. 10

2.7 Operating Requirements ................................................................................ 11

2.7.1 Environmental Requirements ..................................................................... 11

2.7.2 Electrical Requirements ............................................................................. 11

2.7.3 Gas Requirements .................................................................................... 11

2.7.4 Sampling System ...................................................................................... 11

2.8 Connections to the XZR400A1 ........................................................................ 12

2.8.1 Front Panel .............................................................................................. 12

2.8.2 Back Panel ............................................................................................... 12

2.8.3 Gas Inlet, Outlet and Bypass Gas Connections ............................................ 13

2.8.4 Electrical Terminal Block ............................................................................ 14

2.8.5 D-Sub DE9 plug ....................................................................................... 14

2.8.6 Pluggable 8 pins electrical connector ......................................................... 14

2.8.7 Sample Path ............................................................................................ 15

2.8.7.1 Signal Processing Path ........................................................................... 17

2.9 Connections to the XZR400A2 ........................................................................ 18

2.9.1 Gas Sample Inlet and Outlet Fittings .......................................................... 19

2.9.2 Electrical Terminal Block ............................................................................ 20

2.9.3 D-Sub DE9 plug ....................................................................................... 20

2.9.4 D-Sub DA15 plug ...................................................................................... 21

2.9.5 Sample Path ............................................................................................ 21

2.9.6 Signal Processing Path .............................................................................. 22

2.9.7 Alarm Outputs .......................................................................................... 22

2.10 Connections to the XZR400A3 ........................................................................ 23

2.10.1 Front Panel .............................................................................................. 23

2.10.2 Side Panel ................................................................................................ 24

2.10.3 Electrical Terminal Block ............................................................................ 25

2.11 Connections to the XZR400A4-Transportable .................................................... 26

2.11.1 Electrical Terminal Block ............................................................................ 27

2.11.2 D-Sub DE9 Type Plug ................................................................................ 27

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XZR400 Series User’s Manual

2.12 Mains Power Supply - XZR400A1, XZR400A3 & XZR400A4 ................................ 28

2.12.1 Analog Outputs Connections ..................................................................... 29

2.12.2 Alarm Output Connections ........................................................................ 30

2.13 Gas Connection ............................................................................................. 31

3 OPERATION ...................................................................................................32

3.1 General Operational Information ..................................................................... 32

3.2 Powering-up the System ............................................................................... 33

3.3 Warm-Up Period ............................................................................................ 34

3.4 Main Screen .................................................................................................. 36

3.5 Control Parameters Display ............................................................................ 37

3.5.1 Conﬁ guration ........................................................................................... 38

3.5.2 Changing the Access Code ........................................................................ 39

3.6 The Main (Expert) Menu ................................................................................ 41

3.6.1 Analog 1 .................................................................................................. 42

3.6.2 Alarms ..................................................................................................... 43

3.6.3 Auto Adjustment (Optional) ....................................................................... 45

3.6.4 System .................................................................................................... 49

3.6.5 Total Pressure Correction (Optional)........................................................... 51

3.6.6 COMM ..................................................................................................... 52

3.6.6.1 RS232 .................................................................................................. 52

3.6.6.2 RS485 .................................................................................................. 52

3.6.7 Flow ........................................................................................................ 53

4 CALIBRATION ..................................................................................................54

4.1 Deﬁ nitions .................................................................................................... 55

4.1.1 ADJUSTMENT / Calibration Screen Pages 3.2, 3.2.1, 3.2.2 & 3.2.3 ............... 56

4.1.2 Diagnosis of the MSRS Sensor Status - Screen pages 3.2.4 to 3.2.7 ............. 59

5 MAINTENANCE ................................................................................................62

5.1 Troubleshooting Guide / Failure Analysis ......................................................... 62

Tables

Table 1 XZR400 Series MSRS Assembly .....................................................................5

Table 2 RS232 Commands ..................................................................................... 75

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XZR400 Series User’s Manual

Figures

Figure 1 Zirconia Sensor Operating Principle ..............................................................3

Figure 2 MSRS Sensor..............................................................................................4

Figure 3 MSRS Dimensions .......................................................................................4

Figure 4 MSRS Wiring ..............................................................................................4

Figure 5 XZR400 Series MSRS Assembly ....................................................................5

Figure 6 Dimensions - XZR400A1 ..............................................................................7

Figure 7 Dimensions - XZR400A2 ..............................................................................8

Figure 8 Dimensions - XZR400A2 with External Pump Option ......................................9

Figure 9 Dimensions - XZR400A3 ............................................................................10

Figure 10 Dimensions - XZR400A4 ............................................................................10

Figure 11 Front Panel XZR400A1 ..............................................................................12

Figure 12 Back Panel XZR400A1 ...............................................................................12

Figure 13 Gas Circuit Diagram for Rack Version .........................................................13

Figure 14 Gas Circuit Diagram for Rack & Pump Version .............................................13

Figure 15 Electrical Terminal Block XZR400A1 ............................................................14

Figure 16 Sample Path XZR400A1 .............................................................................15

Figure 17 Sample Path with Pump Fitted XZR400A1 ...................................................16

Figure 18 Connections XZR400A2 .............................................................................18

Figure 19 Gas Circuit Diagram for XZR400A2 .............................................................19

Figure 20 Electrical Terminal Block XZR400A2 ............................................................20

Figure 21 XZR400A2 Sample Path .............................................................................21

Figure 22 Connections Front Panel - XZR400A3 .........................................................23

Figure 23 Connections Side Panel - XZR400A3 ...........................................................24

Figure 24 Electrical Terminal Block XZR400A3 ............................................................25

Figure 25 Connections Front Panel - XZR400A4 .........................................................26

Figure 26 Electrical Terminal Block XZR400A4 ............................................................27

Figure 27 D-Sub DE9 Plug - XZR400A4 .....................................................................27

Figure 28 Power Input Socket ..................................................................................28

Figure 29 Start-up Screen ........................................................................................34

Figure 30 Oven Temperature Screen .........................................................................34

Figure 31 Sample Flow Adjustment ...........................................................................35

Figure 32 Main Screen .............................................................................................36

Figure 33 Control Parameters Screen ........................................................................37

Figure 34 Main Menu Access Screen .........................................................................38

Figure 35 Main Menu Screen ....................................................................................38

Figure 36 Main Menu Screen ....................................................................................41

Figure 37 Analog Output Screen ...............................................................................42

Figure 38 Alarm Screen (Main) .................................................................................43

Figure 39 Alarm Screen (Alarm 1) .............................................................................44

Figure 40 Auto Adjustment Screen ...........................................................................45

Figure 41 Pressure Correction Screen .......................................................................51

Figure 42 Comm Screen ..........................................................................................52

Figure 43 Flow Correction Screen .............................................................................53

Figure 44 Calibration Procedure with XZR400A1 ........................................................54

Figure 45 Screen Page 3.2 ....................................................................................... 56

Figure 46 Screen Page 3.2.1 ....................................................................................56

Figure 47 Screen Page 3.2.2 ....................................................................................57

Figure 48 Screen Page 3.2.3 ....................................................................................58

Figure 49 Screen Page 3.2.8 ....................................................................................58

Figure 50 Screen Page 3.2.4 ....................................................................................59

Figure 51 Screen Page 3.2.5 ....................................................................................59

Figure 52 Screen Page 3-2-6 ....................................................................................60

Figure 53 Screen Page 3-2-7 ....................................................................................60

Figure 54 Pressure Correction Screen .......................................................................79

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XZR400 Series User’s Manual

Figure 55 Main Page ................................................................................................85

Figure 56 Control Parameters Page ........................................................................... 85

Figure 57 Main Menu ...............................................................................................85

Figure 58 DP Sensor Page ........................................................................................86

Appendices

Appendix A Technical Speciﬁ cations .............................................................................. 67

Appendix B Modbus (RTU) over RS485 ......................................................................... 70

B.1 Port Conﬁ guration ........................................................................ 70

B.2 Hardware Conﬁ guration ............................................................... 70

B.3 RS485 Register Map .....................................................................71

Appendix C RS232 Serial Output .................................................................................. 74

C.1 Port Conﬁ guration ........................................................................ 74

C.2 Hardware Conﬁ guration ............................................................... 74

C.3 RS232 Command List ................................................................... 75

Appendix D Extended Operating Range - (Optional) ...................................................... 77

Appendix E Process Pressure Correction - (Optional) ....................................................79

E.1 Process Pressure Correction Input Connections .............................. 79

Appendix F Flow Fault Contact - (Optional) ................................................................... 81

F.1 Flow Fault Output Connections ..................................................... 81

Appendix G Commutable Scale (Auto-Ranging) .............................................................83

Appendix H Optional moisture sensor ...........................................................................85

Appendix I Quality, Recycling & Warranty Information ...................................................88

Appendix J Analyzer Return Document & Decontamination Declaration ..........................90

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XZR400 Series User’s Manual

Safety

The manufacturer has designed this equipment to be safe when operated using the procedures detailed in this manual. The user must not use this equipment for any other purpose than that stated. Do not apply values greater than the maximum value stated.

This manual contains operating and safety instructions, which must be followed to ensure the safe operation and to maintain the equipment in a safe condition. The safety instructions are either warnings or cautions issued to protect the user and the equipment from injury or damage. Use qualiﬁ ed personnel and good engineering practice for all procedures in this manual.

Electrical Safety

The instrument is designed to be completely safe when used with options and accessories supplied by the manufacturer for use with the instrument. The input power supply voltage is 90 to 264 V A C, 47/63 Hz. Refer to labels on instrument or calibration certiﬁ cate.

Pressure Safety

DO NOT permit pressures exceeding 2 barg (29 psig) to be applied to the instrument. This maximum pressure applies to all versions of the instrument.

Temperature Safety

During operation some parts of the instrument can be at very high temperatures.

Toxic Materials

The use of hazardous materials in the construction of this instrument has been minimized. During normal operation it is not possible for the user to come into contact with any hazardous substance which might be employed in the construction of the instrument. Care should, however, be exercised during maintenance and the disposal of certain parts. Long exposure or breathing of the calibration gases may be dangerous.

Repair and Maintenance

The instrument must be maintained either by the manufacturer or an accredited service agent. Refer to www.michell.com for details of Michell Instruments’ worldwide ofﬁ ces contact information.

Calibration

The recommended calibration (or veriﬁ cation) interval for the analyzer is 1 to 3 months depending on the location and application in which the instrument is used.

Safety Conformity

This product carries the CE mark and meets the requirements of relevant European safety directives.

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XZR400 Series User’s Manual

Abbreviations

The following abbreviations are used in this manual:

AC alternating current

A Ampere

barg pressure unit (=100 kP or 0.987 atm) gauge

°C degrees Celsius

°F degrees Fahrenheit

l/h liters per hour

l/min liters per minute

mA milliampere

min minute

ppm parts per million

psig pound(s) per square inch (gauge)

RS232 Modbus RTU serial data transmission standard

RS485 Modbus RTU serial data transmission standard

T temperature

V Volts

Michell Instruments ix

Warnings

The following general warnings listed below are applicable to this instrument. They are repeated in the text in the appropriate locations.

XZR400 Series User’s Manual

Where this hazard warning symbol appears in the following

sections, it is used to indicate areas where potentially hazardous

operations need to be carried out.

Where this symbol appears in the following sections it is used to

indicate areas of potential risk of electrical shock.

Where this hot surface warning appears in the

following sections it is used to indicate areas where

the surface may potentially be dangerously hot.

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XZR400 Series User’s Manual

1 INTRODUCTION

The XZR400 Series Trace Oxygen Analyzer is designed to measure oxygen as an inpurity in nitrogen, carbon dioxide, argon, helium or other inert gases. Analysis is both quick and stable, utilizing our metallic sealed reference sensor (MSRS), with no requirement for reference air.

There are 4 versions of the XZR400 analyzer. All are trace oxygen analyzers designed to measure oxygen content in gas, between 0.01 ppm and 25% O2 (250,000 ppm).

Michell Instruments can supply the analyzer so that it is suitable for use with enriched oxygen samples, including pure oxygen which may accidentally be introduced to the sample. This cleaning service must be ordered at the time of purchase as special components are required.

Extended operating ranges of 0 to 30% or 0 to 50% O2 can be supplied but will require the analyzer to be cleaned for oxygen service.

INTRODUCTION

Typical applications include:

Gas purity

Inerting or blanketing speciﬁ c atmospheres

Combustion pre-mixing analysis

Respiratory or medical gas mixtures

Heat treatment

Four models of the XZR400 Series Oxygen Analyzer are available:

• A rack-mount model XZR400A1 (XZR-400-RM)

• A wall-mount model XZR400A2 (XZR-400-WM)

• A bench-mount model XZR400A3 (XZR-400-BM)

• A transportable model XZR400A4 (XZR-400-TP)

NOTE: The rack-mount version can be supplied with a built-in Easidew sensor for measuring moisture in the range -100 to +20 °C

Sample gases at pressures up to a maximum of 2 barg (29 psig) can be accepted.

Michell Instruments 1

INTRODUCTION

The XZR400 Series includes the following front panel mounted items:

• Liquid crystal touchscreen display

• Flow adjustment valve

• Bypass control valve

1.1 Operating Principle

The analyzer operates on the zirconium oxide (zirconia) principle.

A sample of the gas to be measured is connected to the inlet port of the analyzer. The sample gas ﬂ ows through stainless steel pipework into the oven where the zirconia oxygen sensor is located.

XZR400 Series User’s Manual

The sample ﬂ ow should be set to between 1 and 3 l/hr using the electronic ﬂ owmeter, and sample and bypass needle valves on the front of the unit.

The sample gas circulates in the oven, which is heated to temperatures above 600°C, necessary for the zirconia oxygen sensor to operate properly.

The Michell Metallic Sealed Reference Sensor (MSRS) generates a signal that is proportional to the logarithm of the ratio of the oxygen partial pressure in the sample to the oxygen partial pressure contained on the sealed reference side of the MSRS.

The analyzer provides the O2 concentration on the screen and via the 4-20 mA output (optional on XZR400A3).

The optional Easidew Transmitter utilizes ceramic impeadance technology and further details can be found on our website.

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XZR400 Series User’s Manual

1.2 The MSRS Technology

The zirconium oxide sensors are often referred to as the ‘high temperature’ electrochemical sensors. The principle is based on the Nernst principle [W. H. Nernst (1864-1941)]. Zirconium oxide sensors use a solid state electrolyte and are stabilized with yttrium oxide. The zirconium oxide probe is plated on opposing sides with platinum which serves as the sensor electrodes. For a zirconium oxide sensor to operate properly, it must be heated to approximately 600°C. At this temperature, on a molecular basis, the zirconia lattice becomes porous, allowing the movement of oxygen ions from a higher concentration of oxygen to a lower one, based on the partial pressure of oxygen. The movement of oxygen ions across the zirconium oxide produces a voltage between the two electrodes, the magnitude of which is based on the oxygen partial pressure differential created by the reference and sample gas.

INTRODUCTION

Zirconia

ref.

(T)

meas.

Figure 1

Within the oven the zirconium oxide MSRS is maintained at a temperature of 634°C. The MSRS generates a signal that is proportional to the natural logarithm of the partial pressure of oxygen p (O2).

Zirconia Sensor Operating Principle

p (O

E =

RT 4F

p (O

meas)

ref)

With a known reference electrode and a constant temperature it is possible to deﬁ ne the partial pressure of oxygen using the Nernst-equation (see above).

The conductivity of zirconium oxide increases exponentially with temperature. The oxide ion conductivity is optimized at temperatures above 600°C.

The MSRS technology allows the design of miniaturized zirconium oxide-based oxygen sensors. The low mass and volume of the MSRS sensors have a positive effect on the response time, which is one of the best available on the market.

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INTRODUCTION

XZR400 Series User’s Manual

Figure 2

MSRS Sensor

Conventional zirconium oxide sensors require an air reference on one side of the sensor with the sample on the other. This provides a known constant on one side. The Michell MSRS does not require an air reference but instead utilizes a metal, and its oxide, sealed in the zirconium sheath. This allows the sensor operation to be irrespective of the ambient air quality and negates the requirement for a ‘zero’ calibration gas.

Figure 3

MSRS Dimensions

Temperature is a major component in the Nernst equation and can affect the accuracy of some sensors. Placing the thermocouple in contact with the small sensor body helps provide a very accurate temperature measurement. The complete design offers high accuracy and repeatability.

02 Meas.

Ref. S Thermocouple

Figure 4

MSRS Wiring

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XZR400 Series User’s Manual

INTRODUCTION

Figure 5

shows the MSRS and its S thermocouple installed in a 4-hole aluminum tube. This conﬁ guration has the part number XZR400-SMP. Any reference to the MSRS sensor refers to this complete assembly which is considered solid state and non user-serviceable.

Figure 5

XZR400 Series MSRS Assembly

Item Description Wiring

1 MSRS 2 S-type thermocouple 3 4-hole alumina tube 4 Stainless steel connector 5O 6 Common (O

reference wire blue wire

meas. & - TC) white wire

7 Positive thermocouple (+TC) orange wire

567

Table 1 XZR400 Series MSRS Assembly

Michell Instruments 5

INSTALLATION

2 INSTALLATION

It is essential that the installation of the electrical and gas

supplies to this analyzer be undertaken by qualiﬁ ed personnel.

2.1 Unpacking the Analyzer

Open the box and unpack carefully as follows. Save all the packing materials for the purpose of returning the instrument for any warranty claims.

1. Remove the accessories (if ordered with the analyzer). If no accessories

have been ordered the box should contain the following items:

XZR400 Series User’s Manual

• XZR400 Series Oxygen Analyzer

• Power cable (except XZR400A2 model)

• User’s Manual

• Test result sheet

2. Remove the documentation and packing material.

3. Remove the analyzer and power cable.

2.2 Preparation

Carefully read the following guidelines before installing the analyzer. If you are not sure about the installation conditions and other important factors please contact a Michell Instruments’ Application Engineer or a Michell Instruments’ representative prior to the installation.

The following list will help you to identify the recommended preparation steps:

• The analyzer should be installed at ambient temperatures between 0 and +55°C (32 to +131°F).

• The location of the installation should allow access to the display.

• The location of the installation should not expose the analyzer to any vibration.

• The cables should not be exposed to extreme temperatures and mechanical strain.

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XZR400 Series User’s Manual

(

)

2.3 Dimensions - XZR400A1

XZR-400-RM

OXYGEN ANALYZER

INSTALLATION

362mm + 50mm for cable clearance

(14.25” + 1.96”)

132mm

(5.2”)

Handles protrude

40mm (1.6”)

2.3.1 Installing the XZR400A1

Choose your installation site carefully following the recommendations above. Once installed into the rack, there should be at least 2U clearance spaces from other equipment above and below the instrument.

To install, follow the steps below:

1. If necessary, remove any covers from the rack cabinet to gain access to the rear and side.

2. Slide the instrument into the rack and support its weight while the four ﬁ xing screws are inserted.

Figure 6

483mm

19”

FLOW

ADJUSTMENT

BYPASS

Dimensions - XZR400A1

3. Ensure that the front panel of the instrument is ﬂ ush and square with the front of the rack and tighten the ﬁ xing screws.

Michell Instruments 7

INSTALLATION

2.4 Dimensions - XZR400A2

220mm (8.66”)

180mm

(7.09”)

152mm (5.98”)

XZR400 Series User’s Manual

236mm

(9.29”)

201mm

(7.91”)

274mm

(10.79”)

260mm

(10.24”)

30mm

(1.18”)

42mm

(1.65”)

FLOW ADJUSTMENT

BYPASS CONTROL

30mm (1.18”)

GAS IN

GAS OUT

110mm (4.33”)

30mm (1.18”)

30mm

(1.18“)

(4.29”)

109mm

(6.77”)

172mm

(12.01”

305mm

Figure 7

Dimensions - XZR400A2

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XZR400 Series User’s Manual

220mm (8.66”)

180mm

(7.09”)

152mm (5.98”)

490mm

(19.29”)

(18.50”)

470mm

201mm

(7.91”)

INSTALLATION

20mm

(.79”)

(12”)

305mm

274mm

(10.79”)

260mm

(10.24”)

FLOW ADJUSTMENT

53mm (2.09”)

6mm (0.24”) tube

Figure 8

BYPASS CONTROL

470mm

(18.50”)

Analyzer power supply

Dimensions - XZR400A2 with External Pump Option

2.4.1 Installing the XZR400A2

Choose your installation site carefully following the recommendations above.

Particulate filter

Gas Inlet 6mm

230 V AC

50 Hz

60mm

(2.4”)

305mm

370mm

(12.01”)

4 x Ø 8.4

(14.57”)

390mm

(15.35”)

Follow the steps below:

1. Identify a clean and ﬂ at surface on a wall or other vertical location e.g. an instrument panel that is suitable to hold the analyzer.

2. Prepare the mounting site by drilling 4 holes in appropriate locations corresponding to the dimension and location of the fastening holes at the back of the analyzer enclosure.

3. Fix the analyzer vertically to the installation surface using suitable screws. The gas connections and the electrical connections should be on the bottom.

Michell Instruments 9

INSTALLATION

2.5 Dimensions - XZR400A3

(11.4”)

290mm

(8.6”)

220mm

XZR400 Series User’s Manual

260mm

(10.2”)

Figure 9

2.6 Dimensions - XZR400A4

(16.5”)

420mm

(17.7”)

450mm

203mm

(7.9”)

236mm

(9.3”)

Dimensions - XZR400A3

300mm

(11.8”)

Figure 10

Dimensions - XZR400A4

350mm

(13.8”)

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XZR400 Series User’s Manual

2.7 Operating Requirements

2.7.1 Environmental Requirements

The XZR400 Series should be installed in a clean, dust free environment. The recommended ambient temperature is +20 to +25°C (+68 to +77°F) although the instrument will operate, within speciﬁ cation, inside the temperature band of 0 to +55°C (32 to +131°F). It must be installed indoors in a non-condensing atmosphere.

2.7.2 Electrical Requirements

The analyzer requires the following electrical supply:

90 to 264 V AC, 47/63 Hz

There are 2 concentration alarm relays. The output contacts are normally open and potential free. The relay switching capability is 10 W max (up to 100 V or up to 0.5 A).

INSTALLATION

2.7.3 Gas Requirements

To ensure that the sample gas is properly conditioned a

Contact Michell Instruments if you wish to order a suitable

The gas must be clean, dry and oil mist free with the pressure up to a maximum of 2 barg (29 psig) and with particle size < 3 m.

The analyzer is not suitable for samples with hydrocarbons

present. These will combust on the cell and consume oxygen

2.7.4 Sampling System

Depending upon the application a sampling system may be used to cope with high pressure samples, samples with contamination or outdoor installations. The sampling system may include components such as ﬁ lters, pressure gauges, by-pass loops, calibration inlet, pressure regulators and sample pumps - all installed on a panel, or in an enclosure.

It is recommended that a stainless steel construction is used for all parts that will be in contact with the gas.

sampling system might be required.

sampling system.

molecules.

Please consult Michell Instruments if a sampling system is required. Install the sampling system as close as possible to the XZR400 Series analyzer to ensure the best possible measurement results.

NOTE: Michell Instruments can provide a suitable sampling system when delivering the analyzer. Contact a Michell Instruments’ Application Engineer for more information.

Michell Instruments 11

INSTALLATION

2.8 Connections to the XZR400A1

2.8.1 Front Panel

ABC

Item Description

A Touchscreen LCD B Flow adjustment needle valve C Bypass control needle valve

XZR400 Series User’s Manual

2.8.2 Back Panel

An electrical connection terminal is provided for signal and alarm connections.

Item Description

A Inlet ﬁ tting for gas sample to be analyzed.

B Outlet ﬁ tting for gas sample output bypass. C Outlet ﬁ tting for gas sample to be analyzed.

D Manufacturer's plate. E Mains socket (90-132 / 187-264 V AC, 47/63 Hz).

F On/Off button.

G Housing for analyzer's 2 x electrical protection fuses

H Housing for solenoid valve's electrical protection fuses (250 V AC, 3.15 A).

J Optional connector for the automatic setting option.

K Optional D-sub DE9 male plug (RS232 port).

L Electrical connector.

Figure 11

(250 V AC, 6.3 A)

Only ﬁ tted on the rack with automatic setting option.

Front Panel XZR400A1

Figure 12

Back Panel XZR400A1

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XZR400 Series User’s Manual

2.8.3 Gas Inlet, Outlet and Bypass Gas Connections

The ﬂ uidic system comprises 2 ﬂ ow control valves (sensor ﬂ ow and by-pass ﬂ ow), an electronic ﬂ ow meter and a sensor. The gas connections are stainless steel Swagelok 1/8" quick connecting couplers, which guarantee a perfect seal and easy removal.

The evacuation of the analyzed sample must be carried out at

atmospheric pressure, otherwise the total pressure adjustment

option is required.

The measurement of hazardous gas samples require the

analyzer's outlet to be outside the analysis area and must be in

accordance with local regulations.

Sensor flow

adjustment

INSTALLATION

Electronic flow meter

Inlet for gas

to be

analyzed

Figure 13

Solenoid

Bypass flow adjustment

valve

Sensor

Gas outlet

bypass sample

Gas Circuit Diagram for Rack Version

Sensor flow

adjustment

Sensor

Analyzed

gas

outlet

Electronic

flow meter

Pump

Solenoid

valve

Inlet for gas

to be

analyzed

Figure 14

Bypass flow adjustment

Gas outlet

bypass sample

Analyzed

Gas Circuit Diagram for Rack & Pump Version

gas

outlet

Michell Instruments 13

INSTALLATION

2.8.4 Electrical Terminal Block

1 2 3 4 5 6 7 8 9 10111213141516

Item Function

1 (+) 4-20 mA Output No 1. Measurement proportional to the chosen O 2 0 V from the 4-20 mA Output No 1 & 2.

3 (+) 4-20 mA Output No. 2. Measurement proportional to the chosen 0 4-5 General fault alarm dry contact (250 V AC, 2 A or 30 V DC, 2 A on resistive load. 6-7 Alarm No. 1 dry contact terminal (250 V AC, 2 A or 30 V DC, 2 A resistive load).

Function mode (positive, normal) and hysteresis can be conﬁ gured by setting the parameters.

8-9 Alarm No. 2 dry contact terminal (250 V AC, 2A or 30 V DC, 2A resistive load).

Function mode (positive, normal) and hysteresis can be conﬁ gured by setting the parameters.

10-11 Dry contact terminal for ﬂ ow alarm option (250 V AC, 2 A or 30 V DC, 2 A on

resistive load). 12 (+) 4-20 mA input. Option process pressure correction input. 13 (0V) 4-20 mA input. Option process pressure correction input. 14 RS485 Data +/A. 15 RS485 Data -/B. 16 RS485 0 V.

XZR400 Series User’s Manual

scale.

Figure 15

Electrical Terminal Block XZR400A1

2.8.5 D-Sub DE9 plug

This optional D-Sub DE9 type male plug (9 pin) is used to connect an RS232 port.

2.8.6 Pluggable 8 pins electrical connector

This optional connector allows the connection of terminals for automatic analyzer calibration.

14 97472 Issue 3, August 2018

XZR400 Series User’s Manual

2.8.7 Sample Path

The MSRS sensor is placed inside an oven in which the gases to be analyzed are circulated. The oven consists of a gas inlet head and a outlet plate. 3 Viton O-rings ensure the sealing of this device (2 for the inlet and 1 for the outlet).

The internal sample path consists of:

• 2 ﬂ ow control valves: sensor ﬂ ow and by-pass ﬂ ow

• 1 sealing head

• 1 outlet plate

• 1 oven tube

• 1 electronic ﬂ ow meter

INSTALLATION

• 1 MSRS sensor

• 3 Swagelok 6mm stainless steel bulkhead unions (1 gas inlet and 2 gas outlets) - on the rear panel

XZR400A1

Sensor flow adjustment valve

O2 sensor

Barometric pressure sensor

By-pass flow adjustment valve

Ɨ” bulkhead union Ɨ” bulkhead unionƗ” bulkhead union

Sampling gas inlet

Electronic flowmeter 0-12 l/h

Sampling gas outletSampling gas outlet

Figure 16

Sample Path XZR400A1

Michell Instruments 15

INSTALLATION

XZR400A1 WITH INTERNAL PUMP:

• 3 Swagelok 6mm stainless steel bulkhead unions (1 gas inlet and 2 gas outlets) - on the rear panel

• 1 sampling pump (3 l/min)

• 2 electrovalves

XZR400 Series User’s Manual

XZR400A1

Ɨ” bulkhead union Ɨ” bulkhead unionƗ” bulkhead union

Sampling gas inlet

N.C. Solenoid valve

Sampling pump

N.O. Solenoid valve

Figure 17

Sensor flow adjustment valve

By-pass flow adjustment valve

O2 sensor

Barometric pressure sensor

Electronic flowmeter 0-12 l/h

Sample Path with Pump Fitted XZR400A1

Sampling gas outletSampling gas outlet

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XZR400 Series User’s Manual

2.8.7.1 Signal Processing Path

The values of oxygen concentration and ﬂ ow passing through the sensor are displayed continuously.

On speciﬁ c screen pages the following control parameters are displayed:

• Oven temperature

• Ambient temperature (corresponding to the thermocouple junction temperature)

INSTALLATION

• O

• MSRS sensor voltage

• Barometric pressure (standard) or process pressure (optional)

• Flow passing through the sensor

Analog Outputs:

• 2 x 4-20 mA analog outputs proportional to user-deﬁ ned scales. The

Standard Alarms:

• General fault alarm

• 2 concentration alarms with user-conﬁ gurable high/low thresholds and

concentration

wiring connector is on the rear side

hysteresis

Optional Alarm:

• An optional ﬂ ow alarm is available

Michell Instruments 17

INSTALLATION

2.9 Connections to the XZR400A2

The connections are shown below.

A B C

XZR400 Series User’s Manual

Item Description

A Graphic touch screen - displays measurement and menus. B Multi-turn knurled knob for ﬁ ne adjustment of the gas ﬂ ow. C Multi-turn knurled knob for basic adjustment of the gas ﬂ ow (bypass). D Removable plate for access to electrical terminal block and mains fuse.

E Three cable glands are provided for the electrical connections.

F Optional D-Sub DE9 male plug (RS485 or RS232 port). G Inlet ﬁ tting for the gas sample to be analyzed (for 6mm tube). H Outlet ﬁ tting for the analyzed gas sample (for 6mm tube).

Figure 18

Connections XZR400A2

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XZR400 Series User’s Manual

2.9.1 Gas Sample Inlet and Outlet Fittings

The gas path consists of 2 ﬂ ow control valves (sensor ﬂ ow and by-pass ﬂ ow), a sensor and an electronic ﬂ owmeter. For the gas inlet and the outlet connections, Swagelok stainless steel 6mm bulkhead unions are used, which guarantees perfect sealing and easy removal.

The evacuation of the analyzed sample must be carried out at

atmospheric pressure, otherwise the total pressure adjustment

The measurement of hazardous gas samples require the

analyzer's outlet to be outside the analysis area and must be in

accordance with local regulations.

INSTALLATION

option is required.

Sensor flow adjustment

Inlet for gas

to be

analyzed

Figure 19

Electronic

flow meter

Sensor

Bypass flow adjustment

Analyzed

gas

outlet

Gas Circuit Diagram for XZR400A2

Michell Instruments 19

INSTALLATION

2.9.2 Electrical Terminal Block

The terminal block is located by removing the front panel cover.

1 2 3 4 5 6 7 8 9 10111213141516

Item Function

1 Connection to the MSRS cell; system reserved (TC+ – orange). 2 Connection to the MSRS cell; system reserved (common – white). 3 Connection to the MSRS cell; system reserved (reference – blue). 4 Oven connection, system reserved. 5 Oven connection, system reserved (see paragraph 15.2). 6 (+) 4-20 mA output measurement proportional to the chosen O

4-20 mA output is available as an option.

7 4-20 mA (0 V).

8-9 Optional. Dry contact alarm for ﬂ ow rate setting (250 V AC, 30 V DC or 2 A, 2 A

resistive load). Direction of action.

10-11 Threshold alarm No. 1 dry contact terminal (250 V AC , 2 A or 30 V DC, 2 A on

resistive load). Function mode (positive, normal) and hysteresis can be conﬁ gured by setting the parameters.

12 Threshold alarm No. 1 dry contact terminal (250 V AC , 2 A or 30 V DC, 2 A on

resistive load). Function mode (positive, normal) and hysteresis can be conﬁ gured

by setting the parameters. 13 Shared contact for alarms No.1 and No. 2. 14 Threshold alarm No. 2 dry contact terminal (250 VAC , 5A or 30 VDC, 5A on

resistive load). Function mode (positive, normal) and hysteresis can be conﬁ gured

by setting the parameters. 15 Mains supply phase. 16 Mains supply neutral.

XZR400 Series User’s Manual

scale. A second

The equipment is protected by a T2 A - 250 V AC timed fuse (5 x 20 mm) located near the terminal block

Figure 20

Electrical Terminal Block XZR400A2

2.9.3 D-Sub DE9 plug

This optional D-Sub DE9 type male plug (9 pin) is used to connect an RS485 or RS232 port.

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XZR400 Series User’s Manual

2.9.4 D-Sub DA15 plug

This optional D-Sub DA15 male plug (15 pin) is used to connect a second 4-20 mA output, a total pressure adjustment inlet, and the analyzer's auto adjustment terminals, as well as automatic scale switching operations.

2.9.5 Sample Path

The internal sample path consists of:

• 2 ﬂ ow control valves: sensor ﬂ ow and by-pass ﬂ ow

• 1 sealing head

INSTALLATION

• 1 outlet plate

• 1 oven tube

• 1 electronic ﬂ ow meter

• 1 MSRS sensor

• 2 Swagelok 6mm stainless steel bulkhead unions (gases inlet and outlet)

- under the analyzer

XZR400A2

Sensor flow adjustment valve

By-pass flow adjustment valve

O2 sensor

Barometric pressure sensor

Electronic flowmeter 0-12 l/h

6mm bulkhead union 6mm bulkhead union

Sampling gas inlet

Figure 21

XZR400A2 Sample Path

Sampling gas outlet

Michell Instruments 21

INSTALLATION

2.9.6 Signal Processing Path

The values of oxygen concentration and ﬂ ow passing through the sensor are displayed continuously.

On speciﬁ c screen pages the following control parameters are displayed:

• Oven temperature

• Ambient temperature (corresponding to the thermocouple junction temperature)

XZR400 Series User’s Manual

• O

• MSRS sensor voltage

• Barometric pressure (standard) or process pressure (optional)

• Flow passing through the sensor

Analog Outputs:

The analog output can be conﬁ gured to represent the measured oxygen parameters and is provided as a 2-wire signal. It can be set-up as a current loop signal 4-20 mA. The conﬁ guration of the output can be set via the

The analog output is proportional to user-defined scale. The connection is inside the enclosure, behind the removable panel on the front of the unit. An optional second 4-20 mA output is available.

2.9.7 Alarm Outputs

Standard Alarms:

• general fault alarm

concentration

Main Menu.

• 2 concentration alarms with user-conﬁ gurable high/low thresholds and hysteresis

Two alarm relays are provided. They are connected to the instrument via the terminal

block inside the XZR400A2 Analyzer.

Under the pre-set parameter threshold level is exceeded (refer to Section 3.6.2). The direction of the activation, as well as the hysteresis can be conﬁ gured.

The fault alarm is a non-conﬁ gurable alarm which continuously monitors the status of the analyzer. During normal operating conditions the alarm is off. The alarm will be triggered and both relay contacts will open if:

• the oven temperature is low

• the thermocouple breaks

• a fault with the memory occurs

Optional Alarm:

• an optional ﬂ ow alarm is available

Main Menu, the two concentration alarms can be set-up to operate when a

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XZR400 Series User’s Manual

2.10 Connections to the XZR400A3

2.10.1 Front Panel

The front panel features are shown below:

INSTALLATION

Item Description

A Carrying handle. B Multi-turn knurled knob for basic adjustment of the gas ﬂ ow (bypass). C Graphic touch screen - displays measurement and menus.

D Multi-turn knurled knob for ﬁ ne adjustment of the gas ﬂ ow.

E Access plate to the MSRS sensor.

Figure 22

Connections Front Panel - XZR400A3

Michell Instruments 23

INSTALLATION

2.10.2 Side Panel

The side panel connections are shown below:

XZR400 Series User’s Manual

A B

Item Description

A ON/OFF button. B Mains socket (90-132/187-264 VA, automatic range switching, 47/63 Hz). C Inlet ﬁ tting for the gas sample to be analyzed (for 6mm tube).

D Manufacturer's plate.

E Optional Sub-D DE9 male connector; RS232 or RS485 output. F Optional Sub-D DA15 male connector

G Outlet ﬁ tting for the gas sample to be analyzed (for 6mm tube).

E F

Figure 23

Connections Side Panel - XZR400A3

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XZR400 Series User’s Manual

2.10.3 Electrical Terminal Block

1 2 3 4 5 6 7 8 9 10111213141516

Item Function

4-5 Oven connection, system reserved.

6 Optional (+) 4-20 mA output. Measurement proportional to the chosen O

A second 4-20 mA output is available as an option.

7 Optional 4-20 mA (0 V).

8-9 Optional Dry contact alarm for ﬂ ow rate setting (250 V AC, 30 V DC or 2 A, 2 A

resistive load). Direction of action (positive, normal).

10-11 Optional General alarm dry contact terminal (250 V AC, 2 A or 30 V DC, 2 A on

resistive load). Direction of action (positive, normal).

12 Optional Threshold alarm No. 1 dry contact terminal (250 V AC , 2 A or 30 V DC,

2 A on resistive load). Function mode (positive, normal) and hysteresis can be

conﬁ gured by setting the parameters. 13 Optional Shared contact for alarms No.1 and No. 2. 14 Optional Threshold alarm No. 2 dry contact terminal (250 V AC, 5 A or 30 V DC,

5 A on resistive load). Function mode (positive, normal) and hysteresis can be

conﬁ gured by setting the parameters.

15-16 Not connected.

INSTALLATION

scale.

Figure 24

Electrical Terminal Block XZR400A3

Michell Instruments 25

INSTALLATION

XZR400 Series User’s Manual

2.11 Connections to the XZR400A4-Transportable

B C

D E

Item Description

On/Off button. Analyzer housing for 2 electrical protection fuses (250 V AC - T2A or 250 V

AC - T6.3A). E D-Sub DE9 female connector. F Manufacturer's plate.

G Inlet ﬁ tting for the gas sample to be analyzed (for 6mm tube) H Outlet ﬁ tting for the analyzed gas sample (for 6mm tube).

G H

Figure 25

Connections Front Panel - XZR400A4

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XZR400 Series User’s Manual

2.11.1 Electrical Terminal Block

INSTALLATION

9 15

Item Function

1-2 General alarm contact.

2 Alarm No.1 contact terminal. 3 Shared contact for Alarm No.1 and Alarm No.2. 4 Alarm No.2 contact terminal. 5 Not connected.

7-8 Optional Flow alarm.

9 Optional 4-20 mA output #1 positive (+). 10 Optional 4-20 mA output #1 ground (-). 11 Optional 4-20 mA output #2 positive (+). 12 Optional 4-20 mA output #2 ground (-).

13-15 Not connected.

Figure 26

2.11.2 D-Sub DE9 Type Plug

Pin No. Function

1-2 General alarm contact.

3 Shared contact for Alarm No 1 and Alarm No 2. 4 Alarm No. 1 contact terminal. 5 Alarm No. 2 contact terminal. 6 + 4-20 mA measurement. 7 0 V of the 4-20 mA. 8 Optional. 9 Optional.

Electrical Terminal Block XZR400A4

Figure 27

D-Sub DE9 Plug - XZR400A4

Michell Instruments 27

INSTALLATION

XZR400 Series User’s Manual

2.12 Mains Power Supply - XZR400A1, XZR400A3 & XZR400A4

The AC power supply is a push ﬁ t into a power input socket as shown below. The method of connection is as follows:



Figure 28

1. Ensure that both ends of the power cable are potential free i.e. not connected to an AC power supply.

2. Check that the

3. Push the IEC connector ﬁ rmly into the power input socket.

l/0 switch on the power supply connector is switched to 0.

POWER INPUT Socket

IEC connector



Power Input Socket

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XZR400 Series User’s Manual

2.12.1 Analog Outputs Connections

The analyzer is supplied with 1 or 2 off 4-20 mA outputs.

The signal outputs will be connected to external systems that can

potentially inﬂ uence the operation of the process.

The alarm level signals could also be at mains potential so it is essential that, before connecting these signal lines, checks are

made to ensure that these inputs are not live and that it is safe to

The output connection can be wired directly to the terminal block on the back panel of the analyzer. Use screened cable.

INSTALLATION

handle them.

The method of connection is as follows:

Always use screened cable to connect the output to the external

device.

1. Strip back the wire for the positive output lead, exposing approximately 6mm (0.25") wire and clamp into the screw port labelled

Do not overtighten the screw.

2. Strip back the wire for the negative output lead, exposing approximately 6mm (0.25") wire and clamp into the screw port labelled

Do not overtighten the screw.

3. Connect the screen to the ground port.

4-20 mA +.

4-20 mA –.

Michell Instruments 29

INSTALLATION

2.12.2 Alarm Output Connections

Two alarm relays are provided and are connected to the instrument via the terminal block on the back panel of the analyzer.

The signal outputs will be connected to external systems that can

potentially inﬂ uence the operation of the process.

The alarm level signals could also be at mains potential so it is essential that, before connecting these signal lines, checks are

made to ensure that these inputs are not live and that it is safe to

Alarms 1 and 2 are concentration alarms. The direction of the activation N/O or N/C, as well as the hysteresis, can be conﬁ gured.

XZR400 Series User’s Manual

handle them.

The output contacts are normally open and potential free. The relay switching capability is 10 W max (up to 100 V or up to 0.5 A).

The method of connection is as follows:

Always use screened cable to connect the output to the external

device.

Alarm 1

1. Strip back the two wires for the alarm 1 output leads, exposing approximately 6mm (0.25") wire and clamp them into the two screw ports labelled as

2. Connect the screen to the ground port.

Alarm 2

Alarm 1. Do not overtighten the screw.

1. Strip back the two wires for the alarm 2 output leads, exposing approximately 6mm (0.25") wire and clamp them into the two screw ports labelled as

2. Connect the screen to the ground port.

Alarm 2. Do not overtighten the screw.

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XZR400 Series User’s Manual

2.13 Gas Connection

To ensure that the sample gas is properly

conditioned a sampling system might be

Contact Michell Instruments if you wish to order

a suitable sampling system.

Sample gas connections are made via the gas input and gas output ports located on the back panel (XZR400A1), bottom panel (XZR400A2), side panel (XZR400A3) or front panel (XZR400A4) of the analyzer.

Both the input and output gas connections are 1/8” stainless steel Swagelok® couplings.

NOTE: To facilitate ease of connection to the port, at least 75mm (3") of the tubing coming out of the gas inlet port must be straight.

INSTALLATION

required.

The method of connecting to the gas inlet and gas outlet ports is as follows:

1. Connect the gas source from the sample system to the Swagelok® ﬁ tting at the inlet port on the instrument using 1/8” stainless steel tubing. Tighten the ﬁ tting as much as possible by hand and tighten again with a 7/16” ﬂ at wrench (approximately 1¼ turns).

2. Connect the gas outlet port in a similar manner to that described in Step 1 using 1/8” stainless steel tubing.

If you undo the ﬁ tting again and reconnect it, ﬁ rst tighten up by

hand and then tighten using a 7/16” ﬂ at wrench with no more

than a 1/8 turn.

DO NOT OVER-TIGHTEN.

NOTE: Maximum sample pressure is 2 barg (29 psig).

NOTE: Sample is vented to atmosphere. Depending on the location of the analyzer it may require a vent line to a safe location that is freely ventilated.

Michell Instruments 31

OPERATION

3 OPERATION

It is recommended that the user becomes familiar with Section 2 of this manual in which all the equipment controls, indicators, the elements of the display and the overall menu structure are described.

Prior to operation, the analyzer must have been connected to the correct electrical power supply and the relevant analog and alarm outputs connected to external systems as described in Section 2.

On delivery, the instrument will have been set-up with a standard set of default parameters deﬁ ning the operation of the analyzer. These parameters can be changed as required by means of the

3.1 General Operational Information

Main Menu.

XZR400 Series User’s Manual

The input gas must be at a pressure of less than 2 barg (29 psig). A pressure regulator is recommended when above 2 barg (29 psig) for better ﬂ ow control. The outlet of the system must be at atmospheric pressure.

NOTE: If the outlet is at higher pressure than atmospheric an optional process pressure correction is necessary. Please consult Michell Instruments in this case.

The instrument is designed to operate with a gas ﬂ ow of 2 l/h ±1 l/h.

NOTE: For best results ensure that the sampling system is as close as possible to the XZR400 Series Analyzer.

For all applications the sample gas is taken into the instrument via the gas inlet port located on the bottom panel of the analyzer, from where it passes into an oven chamber. The gas ﬂ ow rate is then measured on the outlet side of the sample chamber, prior to being exhausted from the instrument via the gas outlet port.

The ﬂ ow, necessary for the sample gas circulation, is generated by the sensor oven which utilizes the heat convection principle. The hot sample gas from the sensor oven is pushed by the hot oven gases, which are still in the oven. On the way out of the oven the sample gas cools, passing through the gas outlet port, and is carried away by the main gas ﬂ ow.

The XZR400 Series Analyzers are suitable for the measurement of oxygen in a wide variety of clean and dry gases. It will not contaminate high purity gases and is safe for use in critical semiconductor and ﬁ bre optic manufacturing applications.

It is possible to continuously visualize the oxygen concentration in the range between

0.01 ppm and 25% oxygen. If required, the analyzer can display the MSRS voltage, the

oven temperature and the temperature of the cold junction in the thermocouple.

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XZR400 Series User’s Manual

3.2 Powering-up the System

Carefully check the electrical connection before applying the power.

Switch the external disconnecting device supplying power

Wall Mount Version

to the analyzer. This device does not have a built-in on/off switch.

OPERATION

Portable and Rack Versions

Power-up the system. Observe all normal safety precautions during the powering-up procedure.

Never allow sample gas to enter the analyzer when it is switched

In the case of power breakdown for more than 1 hour it is

necessary to purge the analyzer with Nitrogen or instrument air

This will prevent any condensation due to the oven being off.

Switch the built-in on/off switch to the

off.

dew point < -40.

Maintain the ﬂ ow rate at 2 l/h ±1 l/h.

ON position

Michell Instruments 33

OPERATION

3.3 Warm-Up Period

Upon power up, the screen appears as shown below. The analyzer performs a series of internal checks for about 5 seconds.

NOTE: Touch the French or English area to display the menu in the required language.

XZR400 Series User’s Manual

Software version V0.1.7.ver

French

Figure 29

English

Start-up Screen

Wait about 15 minutes until the oven temperature reaches 634°C, indicated by the oven temperature line.

The low temperature alarm is displayed digitally throughout the rise in oven temperature; the general alarm contact is activated.

NOTE: A ﬂ ow greater than 3.5 l/h prevents the correct rise in oven temperature.

Oven Flow

48.8ºC

7.5 l/h

Low temperature alarm

Figure 30

Oven Temperature Screen

34 97472 Issue 3, August 2018

XZR400 Series User’s Manual

If required, adjust the gas sample ﬂ ow by operating the by-pass valve (B) and then the end ﬂ ow valve (A) to obtain a 2 ±1 l/h ﬂ ow rate (C).

NOTE: For optional measurement do not fully close the by-pass valve.

OPERATION

Flow l/h

: 19.3 %

View

Figure 31

Pump

0,5....2....3,5

Adjustment

20:09:43

Sample Flow Adjustment

Michell Instruments 35

OPERATION

3.4 Main Screen

Once the temperature has been reached, the screen displays:

XZR400 Series User’s Manual

Pump

: 19.3 %

Flow l/h

View

Measured oxygen concentration between 0.01 ppm and 25%. The maximum measurement precision can only be obtained following an adjustment

B C Screen number

E Message display area

F Sample gas ﬂ ow between 0.5 and 3.5 l/h, shown by the cursor position G H Current time

performed after a minimum of 3 hours of operation. However, upon receipt of the analyzer, this adjustment will have been performed in the factory as shown in the manufacturing check and adjustment sheet.

Pump The

Touch-sensitive

Touch sensitive Used to adjust the MSRS cell after changing the cell or the oven

ON/OFF button available on A1 or A4 models.

PUMP signal ﬂ ashes when the pump is operating

View area

Adjustment area

0,5....2....3,5

Figure 32

Main Screen

Adjustment

20:09:43

36 97472 Issue 3, August 2018

XZR400 Series User’s Manual

3.5 Control Parameters Display

On the Measurement Display Screen (3) touch the VIEW area

The Control Parameters Screen (3.1) will appear.

Control parameters

Sensor Voltage

O2 27.35 ppm

Adjustment

Oven

Room temp

Atm pressure

Flow

Adjustment

634.0ºC

30.7ºC

-122.76 mV 1036 mBar

2.5 L/h

0.00

Maintenance

OPERATION

3.1

Figure 33

Control Parameters Screen

This displays the following information about the analyzer.

Current temperature of the hot joint of the thermocouple

Oven

corresponding to oven temperature. This must be 634°C. Temperatures 30°C below the reference and 50°C above the reference trigger a general alarm.

Room Temperature

Measure taken on the motherboard. This measurement is only used to compensate for the cold solder joint of the thermocouple.

Measurement in mV of the voltage supplied by the measuring

Sensor Voltage

cell, which must be between -300 and +250 mV. A value greater than the upper limit generates a MSRS fault alarm.

The pressure at the analyzer outlet must be near atmospheric pressure (between 800 and 1750 mbar). A value above 1200

Atm pressure

mbar and under 800 mbar generates an oxygen measurement

error. NOTE: If the pressure is greater than 1750 mbar,

the atmospheric pressure sensor can be damaged irreversibly.

The sample's ﬂ ow in l/hour must be 2 ±1 l/h. A ﬂ ow value

Flow

below 0.5 or greater than 3.5 l/h generates a general fault alarm displaying a Flow fault.

O2 Measured oxygen percentage

Return to Main Screen 3. The display returns to the Main Screen automatically if the touch screen is not used for 2 minutes.

Adjust Displays the adjustment screen to calibrate the analyzer. Maintenance

Displays the analyzer's parameter setting screen (access code, outputs, alarm limits, time-stamp, RS485, ﬂ ow corrections).

Michell Instruments 37

OPERATION

3.5.1 Conﬁ guration

To reach the Main Menu Screen enter the access code as follows.

XZR400 Series User’s Manual

• Touch the

VIEW area of Screen 3. The Control Parameters Screen is

displayed.

• Touch the

NOTE: To leave this screen touch

Maintenance area.

Cancel area.

• Touch the box labelled 0____

• Enter the access code on the keyboard. The default access code is 0.

• To correct an entry error press

• Touch the OK area.

Control parameters

Access code

Oven

0___

Min = 0 Max = 9999

O2 27.35 ppm

Adjustment

Room temp

Sensor Voltage

Atm pressure

Flow

Cancel

Adjustment

789

680.3C

30.7C

456

-122.76 mV 1036 mBar

2.5 L/h

0.00

Maintenance

3.1

Figure 34

Main Menu Access Screen

If the access code is incorrect the screen goes back to Screen 3.1.

If the access code is correct the Main Menu Screen is displayed (5).

Main menu

Analog output Alarms

Auto adjustment System

Pressure

Flow

Figure 35

Main Menu Screen

Comm

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XZR400 Series User’s Manual

3.5.2 Changing the Access Code

The default access code is 0000. To change this code proceed as follows:

OPERATION

NOTE: To leave a screen, touch

• Touch the

VIEW area of Screen 3. The Control Parameters Screen is

displayed.

Control parameters

Sensor Voltage

Atm pressure

O2 27.35 ppm

Adjustment

• Touch the Maintenance area.

Main menu

Oven

Room temp

Flow

Adjustment

634.0ºC

30.7ºC

-122.76 mV 1036 mBar

2.5 L/h

0.00

Maintenance

3.1

Analog output Alarms

Auto adjustment System

Flow

• Touch the System area.

System

Hour Misc.

Tue 18/02/2014 15:48:54

Pressure

Comm

++ + ++

-- - --

5.5

• Touch the Misc tab

Michell Instruments 39

OPERATION

XZR400 Series User’s Manual

System

Hour

Misc.

Setpoint

Language

New access code

• Touch the New Access code area

System

Access code

Hour Misc.

0___

Min = 0 Max = 9999

New access code

Setpoint

English

5.5

634ºC

English

****

789

5.5

456

634ºC

English

****

• Enter the new access code

• To correct an entry error, press the

• Press the

OK area

Cancel

area

40 97472 Issue 3, August 2018

XZR400 Series User’s Manual

3.6 The Main (Expert) Menu

This menu accesses all of the conﬁ guration functions of the analyzer. Press the corresponding area to display the required screen.

Main menu

Analog output Alarms

Auto adjustment System

OPERATION

Pressure

Flow

Figure 36

Main Menu Screen

Comm

Area Function Section

Analog output

Conﬁ gures the 4-20 mA analog output 1 3.6.1 Disables the 3 alarms (during adjustment and/or during

Alarms

normal operation) and sets the threshold and the function

3.6.2

mode for alarm 1 and 2 Conﬁ gures the automatic cyclical adjustment (adjust) of

Auto adjustment

the analyzer

3.6.3

Optional Conﬁ gures the analyzer timestamp function, oven

System

temperature, menu display language, Expert access code and RS output conﬁ guration (ModBus address with

3.6.4

RS485 or frame period with RS232).

Pressure

Conﬁ gures the process pressure correction Optional for all models

3.6.5

Returns to the Measurement Display Screen (3)

Sets the frequency of the frame transmission

COM 232

Optional

3.6.6

Cannot coexist with the RS485 Sets the ModBus address of the analyzer and displays

COM 485

the message frames received by the analyzer via the RS485 interface

3.6.6

Cannot coexist with the RS232

Flow

Conﬁ gures the gas sample ﬂ ow correction based on its density

3.6.7

Michell Instruments 41

OPERATION

3.6.1 Analog 1

The Analog Output 1 screen (5.1) sets the parameters for the 0/4-20 mA output.

• Touch the area to select it and change it.

• Enter the new numeric value on the virtual keypad.

XZR400 Series User’s Manual

• Click

OK to conﬁ rm or Cancel to discard the changes.

Analog output

Analog 1

Area Function

Conﬁ guration of the 0/4-20 mA analog output No 1.

LIN: the output voltage must be linearly proportional to the oxygen

measurement value.

LOG: the output voltage must be a logarithmic function with respect to

the oxygen measurement value. Use this option when the signal span is greater than 3 decimal counts.

4-20 mA

A current of 3.80 mA (4-20 mA output conﬁ gured) or 21 mA is automatically generated when there is a general fault if:

Analog 2

4-20 mA

Start of scale

Unit

End of scale

Range

Figure 37

Analog Output Screen

5.1

O2 Linear

0.10%

10.00%

0-20 mA

Start of scale

Unit

End of scale

Range

Analog 2

• oven temperature is lower than 30°C or higher than 50°C from the setpoint

• thermocouple rupture

• ﬂ ow less than 0.5 and greater than 3.5 l/h

• internal wiring fault

Conﬁ guring the concentration for the low scale and the measurement unit. Select a value and a unit corresponding to the concentration to be measured.

Conﬁ guration of the unit in which the value is expressed (% or ppm).

Conﬁ guring the high scale concentration and the measurement unit. Select a value and a unit corresponding to the concentration to be measured.

NOTE: the difference between the low scale and high scale value is limited to three decimal places to ensure correct resolution. This limitation only applies to a linear output type.

Conﬁ guration of the analog output (0-20 or 4-20 mA).

Returns to the Main Menu screen.

The information is similar to that of the Analog 1 menu and can be reached by touching the Analog 2 area. When this option is not available, the display shows

Option not

available.

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3.6.2 Alarms

The Main Tab

The Alarms Screen sets the general behaviour for alarms 1 and 2.

• Touch the area to select it and change it.

OPERATION

• Click

Area Function

OK to conﬁ rm or Cancel to discard the changes.

Alarms

Enable when adj

Sets the behaviour for alarms 1 and 2 exclusively during auto adjust operations or manual.

•

Enable when adj

•

Sets the current behaviour for alarms 1 and 2 and that of the General fault exclusively in normal mode of operation (excluding adjustment).

•

Disabled

Alarm 1 tab Alarm 2 tab

•

NOTE: Operating with alarms disabled must only be done temporarily, particularly during adjustments.

Touch the area to display the alarm 1 threshold change screen.

Touch the area to display the alarm 2 threshold change screen.

Returns to the Main Menu Screen.

Alarm 1

Disabled

Figure 38

Alarm 2Main

Alarm Screen (Main)

5.3

No: exceeding the alarm threshold will not trigger the

relay for alarms 1 and 2 during adjustment operations, or when alarm set off is conﬁ gured by the user.

Ye s: exceeding the alarm threshold will trigger the relay

for alarms 1 and 2 during adjustment operations, or when alarm set off is conﬁ gured by the user.

No: the alarms are operational; the corresponding alarm

will be activated when an alarm is triggered and/or a fault occurs. This is the standard choice for the analyzer in normal operation.

Ye s: no alarms will be activated regardless of the alarm and/

or fault present. Use this option during the commissioning of the analyzer, especially before the wiring the alarms. The blinking on the Measurement Display Screen (3).

Alarms Disabled message will be displayed

Michell Instruments 43

OPERATION

The Alarm 1 or Alarm 2 Tab

This screen is used to set the alarm function mode (high, low), the threshold and hysteresis for the selected alarm 1 or 2.

It is used mainly to enable or disable the alarms during the adjustment phases and during normal analyzer operation.

• Touch the area to select it and change it.

• Enter any new numeric value on the virtual keypad.

XZR400 Series User’s Manual

• Click

OK to conﬁ rm or Cancel to discard the changes.

Alarms

Area Function

Sets the behaviour for alarm (1 or 2 according to the highlighted tab).

•

Type

•

Threshold

Hysteresis

Conﬁ gures the alarm threshold value. Select the value and unit in relation to the future measurement.

Sets the alarm 'delay' value to return to alarm-off condition. The greater this value is, the more the return to alarm-off condition value must be delayed. For example, with a hysteresis of 3ppm over a 15ppm alarm value, the alarm is triggered at 15ppm, but returns to the alarm-off position at a 12ppm value (15ppm - 3ppm).

Returns to the Main Menu Screen.

Main

Figure 39

Alarm 2Alarm 1

Type

Threshold

Unit

Hysteresis

Alarm Screen (Alarm 1)

1.0%

0.1%

5.3

Low

Low: the alarm will be activated when the measurement value

is equal or below the threshold set for the Alarm threshold line. The alarm must be disabled when the measurement value is above the threshold set for the Alarm threshold line.

High: the alarm will be activated when the measurement value

is equal to or above the threshold set for the Alarm threshold line. The alarm must be disabled when the measurement value is below the threshold set for the Alarm threshold line.

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3.6.3 Auto Adjustment (Optional)

Purpose

This function is used for the analyzer’s auto adjust at a set time and at regular intervals set in hours or days. Solenoid valves connected to the D-Sub DA15 on the XZR400A2, and 8 pin connector on the XZR400A1 control any adjustment gas and control gas inputs. Additional contacts are used to launch the sequence.

Hardware conﬁ guration

Peripheral equipment must be installed as indicated.

Parameter setting for auto adjust

The Auto Adjust Screen sets the array of parameters used for the analyzer's auto adjust.

• Touch the area to select it and change it.

OPERATION

• Enter the new numeric value on the virtual keypad.

• Click

OK to conﬁ rm or Cancel to discard the changes.

Auto adjustment

Main Level

Enable Start Process

External trigger

Adjustment period

Figure 40

Process

T0 adj

Unit

12:00

Auto Adjustment Screen

1 d

The three tabs, Main, Level and Process are described next.

5.4.1

Michell Instruments 45

OPERATION

Main Tab

XZR400 Series User’s Manual

Auto adjustment

Main Level

Enable Start Process

External trigger

Adjustment period

Process

T0 adj

Unit

5.4.1

12:00

1 d

Area Function Enable/Disable Enables/disables the launch of the automatic adjustment.

Management of the start of the auto-adjust procedure.

•

Start: the auto adjust sequence is launched immediately,

Start

regardless of the other settings.

T0 start: the auto-adjust sequence is launched at the time

• speciﬁ ed by the area

T0 Adjust.

The interval is set by Adjustment period (see below). Management of an external launch control button (push-button or

dry contact from an external PLC) controlling the launch of the auto adjust sequence (as opposed to the automatic launch of the Inter Start and Inter Adjust commands).

•

No: pressing the external button connected to terminals

External trigger

5-6 of the D-Sub DA15 connector or the 8 pluggable pin connector will not allow the launch of the auto adjust sequence.

Ye s : pressing the external button connected to terminals

• 5-6 of the D-Sub DA15 connector or the 8 pluggable pin connector will allow the launch of the auto adjust sequence.

T0 adj Sets the start time of the next auto-adjust. Adjustment

period

Unit

Adjustment interval Sets the time interval in hours or days between two auto-adjust sequences. See below.

d (day) or hr (hour) Deﬁ nes the time unit of the Adjustment interval.

Inter adjust: Intervals in hours or days between automatic adjustments

Automatic

adjustment

sequence

Automatic

adjustment

sequence

next start

time

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XZR400 Series User’s Manual

Level Tab

The Level tab of the Auto adjust screen deﬁ nes the unit and the value of adjustment and control gases.

Auto adjustment

OPERATION

Main

Area Function

Standard gas

Level

Unit

Deﬁ nes the value of adjustment gas Deﬁ nes the unit of adjustment gas

Control gas

Level

Unit

Deﬁ nes the value of control gas Deﬁ nes the unit of control gas

ProcessLevel

Standard gas:

Level

Unit

Control gas:

Level

Unit

5.4.1

5.00%

Michell Instruments 47

OPERATION

Process Tab

XZR400 Series User’s Manual

Auto adjustment

Main

Ctrl Adj Pressure

Level Process

Adjustment time

Control time

Purge time

Hold 4-20 mA

Alarms

20 min

25 min

30 min

5.4.1

Area Function Adjustment

time

Duration in minutes of the adjustment sequence.

Control time Duration in minutes of the control sequence. Purge time Duration in minutes of purging.

Concerns the 4-20 mA analyzer outputs

•

No: 4-20 mA outputs will display the oxygen concentration

Hold 4-20 mA

during the adjusting sequence start until the purge end.

Ye s: 4-20 mA outputs are locked to the value measured

• before the adjustment sequence start until the end purge.

Concerns the analyzer general fault alarm as well as Alarms 1 and 2

Alarms

Ctrl Adj Pressure

•

No: alarms will remain operational during the adjust

sequence start until the end of the purge.

Ye s: alarms will be disabled.

•

Gas adjustment and control gas bottle pressure checking

•

No: any pressure control on bottles of gas adjustment or

gas control will be carried out. In case of fault in at least one of these bottles, the conformity of the adjustment or control cannot be guaranteed.

Ye s: the adjustment sequence or control will stop if any

• pressure fault is detected. The or

Control not possible will be displayed. The previous

No adjusting message

adjustment will be retained.

Returns to the Main Menu Screen.

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Automatic Adjustment Usage

Launch Action

If external trigger has been selected, touch the dedicated push-button

Manual

Immediately via the screen

For deﬁ ned date and interval

3.6.4 System

(or launch via the contact controlled by the external PLC) to launch the auto adjust sequence immediately.

Regardless of the conﬁ guration for alternative launch modes, touch the immediate start area to launch the auto adjust sequence immediately.

If adjustment period (time interval between adjustments) and T0 adj (start time for the next auto adjust) have been deﬁ ned, the auto adjust sequence is launched automatically at the scheduled time (T0 adj) and resumes cyclically after the adjustment period. Example: interval adjustment 2h and T0 14h. If the operator pushes the Start area T0 at 17:00, self adjustment will be disabled until the next day to 14:00. It will then be started at 16:00, 18:00 and 20:00. To stop the automatic sequence, touch the

OPERATION

Enable area.

This screen is used to update the analyzer's real-time time stamp clock, to set the oven's temperature or the interval between two RS232 messages, as well as the factory reset.

• Touch the area to select it and change it.

• Enter the new numeric value on the virtual keypad.

• Click

Hour Tab

The Hour tab concerns the system timestamp.

• Touch the + and – area to set the current time and date.

NOTE: seconds will be resettled.

OK to conﬁ rm or Cancel to discard the changes.

System

Hour Misc.

5.5

++ + ++

Tue 18/02/2014 15:48:54

-- - --

Michell Instruments 49

OPERATION

Misc Tab

The Misc tab of the System screen concerns the oven temperature setpoint, the menu display language and the access code modiﬁ cation.

• Touch the + and – area to set

XZR400 Series User’s Manual

System

Hour

New access code

Area Function

Enter the oven temperature value that the analyzer will use to operate.

Setpoint

The default value is 634°C. An unsuitable temperature setting reduces the performance of the analyzer and can damage the MSRS oxygen measuring cell.

Touch the Language area. In the opened window, change the

displayed language. The new language will be applied at the next

Language

start.

NOTE: the language selection is proposed if this choice was not selected at the analyzer start.

New access code

Modiﬁ es the expert level code. By default, the expert code is

Warning: If the access code is forgotten the equipment will need to be returned to the factory for Expert level code reset.

The analyzer parameter values defaults are set at the factory, namely

• Oven temperature: 634°C

Factory settings

• Alarm No. 1 High mode, threshold: 3 ppm

• Alarm No. 2 High mode, threshold: 3.5 ppm

• Low scale and high scale, 4-20 mA output No. 1: 0.1 and 10 ppm

• Low scale and high scale, 4-20 mA output No. 2: 0.1 and 1000 ppm

Misc.

Setpoint

Language

5.5

634ºC

English

****

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3.6.5 Total Pressure Correction (Optional)

This optional screen is used to adjust the low scale and the high scale of the external pressure sensor, which is connected to D-Sub DA15 for all versions, except for the XZR400A1 model, where the connection is carried out on the 8 pins connector. This sensor compensates the total pressure in the MSRS cell.

When the gas pressure at the analyzer output is greater than the atmospheric pressure sensor's upper limit (1,200 mbar), the total pressure adjustment is needed to guarantee optimum operation of the analyzer.

The input signal from the external pressure sensor is a 4-20 mA analog signal representing the output pressure of the analyzer. The signal enters the analyzer at terminals 11 and 12 of the D-Sub DA15 connector for all versions, except for the XZR400A1 model, where the connection is carried out on pins 12 and 13 of the screw terminal.

Defective wiring/electrical supply of the total pressure sensor, or no connection of the total pressure sensor’s 4-20 mA signal to the analyzer, generates a general fault alarm and the display of a pressure fault message. This is not run if the sensor outputs a 0-5 V signal type.

OPERATION

In case of a pressure fault, the O

concentration will be displayed taking in account an

atmospheric pressure of 1000mbar. If the pressure of the measured gas is not within a 1000mbar ±20mbar bracket, the O2 concentration on the display will be off the relative 2% tolerance.

Pressure Correction Screen

• Touch the area to select it and change it.

• Enter any new numeric value on the virtual keypad.

• Click

OK to conﬁ rm or Cancel to discard the changes.

Pressure correction

Start of scale

End of scale

0.0 bar abs

2.0 bar abs

5.6

Figure 41

Pressure Correction Screen

Area Function Start of scale

End of scale

Touch the area to enter the low scale pressure value of the external sensor.

Touch the area to enter the high scale pressure value of the external sensor.

Returns to the Main Menu Screen.

Michell Instruments 51

OPERATION

3.6.6 COMM

3.6.6.1 RS232

Area Function Frame period

3.6.6.2 RS485

Only available for analyzers equipped with this output.

Comm Screen

The COM RS485 screen sets the RS485 output parameters.

XZR400 Series User’s Manual

Sets the delay, in seconds, between two RS232 signal emissions, from 0 (no emission) to 999 seconds (one emission every about 16 minutes).

Returns to the Main Menu Screen.

Comm

RS485

Area Function

Indications of the RS485 interface connection parameters that cannot be modiﬁ ed.

RS485

ModBus address

• Speed: 9600 bauds

• Number of bits

• Parity: None

• Stop: 1 The analyzer's ModBus slave address. Enter a value between 1 and 255,

including terminals.

Speed

Data

Parity

Stop

Modbus address

Figure 42

5.7

9600 bps

8 bits

none

Comm Screen

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3.6.7 Flow

This screen is used to deﬁ ne a ﬂ ow correction factor depending on the density of the gas being analyzed. Use this function to optimize the ﬂ ow measurement depending on the type of gas used.

Flow correction

1 : Air O2 N2 AR NO

OPERATION

5.8

2 : He

3 : CO2 NO2 N20

Area Function Flow

correction

Selects the adjustment factor number (1, 2 or 3) depending on the gas analyzed. For this choice, take the main gas into account.

Returns to the Main Menu Screen.

Figure 43

Flow Correction Screen

Michell Instruments 53

CALIBRATION

4 CALIBRATION

The optimal measurement accuracy is reached when calibrating the analyzer after a minimum of three hours of operation.

Calibration is done on a single point. The gas concentration adjustment should be between 0.01 ppm and 25% oxygen.

(0.1%) and 5,000 ppm (0.5%) as this is too close to the internal

It is possible to control the calibration efﬁ ciency with a second gas, rated at a different O2 value. A single cylinder with O2 at a known concentration is required for calibration. A second cylinder with a different concentration can be used to verify calibration (Control Gas).

XZR400 Series User’s Manual

Avoid calibration gas concentrations between 1,000 ppm

reference.

XZR400 OXYGEN ANALYZER

USE STAINLESS STEEL TUBE FOR TRACE OXYGEN MEASUREMENTS

BYPASS GAS OUTLET SENSOR GAS OUTLET

REGULATOR ATTACHED

SET OUTPUT TO A MAXIMUM OF 2 BARG

CAL GAS BOTTLE

ATTACH HOSE TO “GAS INLET” PORT

Figure 44

Calibration Procedure with XZR400A1

GAS INLET

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4.1 Deﬁ nitions

• Adjustment gas: an adjustment gas used in order for the analyzer to

correct a possible difference between the measured value and the actual O2 content in the gas. The value which is written on the cylinder (or on the relevant analysis certiﬁ cate) must be entered in the ﬁ eld

gas section. The content can be in either % or ppm.

CALIBRATION

adjustment

• Control gas: a gas with a different O

It helps in verifying the calibration. The O2 content can be either in % or ppm. This control is not compulsory.

• Process gas: the gas to be measured.

• Calibration duration: the period during which the adjustment gas

eliminates the process gas out of the internal sample path. The quality of calibration will far be greater if the process gas is fully cleared away. A longer period is necessary when the adjustment gas value is low and/ or when the difference between the process gas and the adjustment gas is large. Calibration with % level oxygen gas requires approximately 5 minutes. Calibration with ppm level oxygen gas may require 30 minutes.

• Purging time: the period during which the process gas eliminates the

adjustment gas (or veriﬁ cation gas) out of the internal sample path.

If a low O2 content (< 1000ppm) adjustment gas is used, a purge

time is necessary to allow the stabilization of the measurement

before starting the calibration sequence. This is even more

important if the process gas is going to be at a very different

concentration from that of the adjustment gas.

content than the adjustment gas.

Michell Instruments 55

CALIBRATION

XZR400 Series User’s Manual

4.1.1 ADJUSTMENT / Calibration Screen Pages 3.2, 3.2.1, 3.2.2 & 3.2.3

NOTE: Prior to commencement of the adjustment/calibration the alarms can be disabled from screen page 5.3.

From the Main Screen press Adjustment to get to screen page 3.2.

Pressing the key from any of the Adjustment Screens will return to the previous screen.

Adjustment

Concentration :

Standard gas :

Control gas :

Adjustment Modif

12.4 %

8.02 %

2.00 %

3.2

Figure 45

Screen Page 3.2

Ensure that the values on the Screen 3.2 are correct with respect to the calibration gas cylinder or certiﬁ cate. If they are correct press the

Adjustment button, this will take

you to Screen 3.2.2.

If the values do not match press the

‘

MODIF’ . Incorrect Values

Adjustment

Level Process

Standard gas :

Modify key, this will take you to Screen 3.2.1.

3.2.1

Level

Unit

Control gas :

Level

Unit

8.02 % %

2.00 % %

Figure 46

Screen Page 3.2.1

To change any of the values, press the relevant value key and use the numeric keypad to modify the value.

To change the gas unit (% to ppm or ppm to %), press the unit key.

Press the

Process tab to check the Adjustment, Control and Purge times and correct

and modify if necessary.

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The length of time for each process should be long enough to ensure that the calibration gas sample is stable during Adjustment and Control and that the calibration gas is completely purged to a level close to normal operation (below any alarm threshold) before switching back to measuring the process.

Adjustment

Level Process

CALIBRATION

3.2.1

Adjustment time

Control time

Purge time

5 min 5 min

5 min

Press the key to return to Screen 3.2 and press the Adjust key to start the calibration procedure (Screen 3.2.2).

ADJUST . Correct Values

Adjustment

3.2.2

Standard gas :

Concentration O2

Flow

4-20mA

blocked

8.02 %

12.4 %

2.5 L/h

insert adjustment gas and VALID

Cancel VALID

Figure 47

Screen Page 3.2.2

Press the 4-20 mA key to select whether the output is frozen (blocked) or will follow the gas concentration (active).

Open the gas cylinder to give a ﬂ ow rate of 2 l/h ±1 l/h.

Wait for approximately 5 minutes for the concentration O2 value to be close to the standard gas value and then press the

VALID key. This will bring up Screen 3.2.3.

An incorrect gas ﬂ ow (0.5 < ﬂ ow < 3.5 l/h) will prevent the

calibration sequence from starting.

An incorrect gas ﬂ ow DURING the calibration will cancel the

sequence and screen page 3 will appear showing the message:

Impossible to calibrate:  ow fault.

Michell Instruments 57

CALIBRATION

Screen page 3.2.3 shows the O2 concentration in the adjustment gas and the time left before the purge sequence.

XZR400 Series User’s Manual

Adjustment

Adjustment progressing

Standard gas : remaining time : Concentration O2

Flow

Cancel

Figure 48

Screen Page 3.2.3

8.02 % 19 min 58 s

12.4 %

2.5 L/h

after 1min

3.2.3

Op forced

During the calibration sequence it is possible to:

• Force calibration after 1 minute if the reading is stable. Press the Op

forced after 1min

• Cancel calibration at any time. Press the

key and screen page 3.2.4 will show (after 1 minute).

Cancel key and go to screen

page 3.2.8.

Cancel Calibration

Adjustment

Bleeding running

remaining time :

Concentration :

Cancel

bleeding

Figure 49

29 min 58 s

8.02 %

Screen Page 3.2.8

3.2.8

Pressing the Cancel bleeding key will return to the Main Screen.

58 97472 Issue 3, August 2018

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CALIBRATION

4.1.2 Diagnosis of the MSRS Sensor Status - Screen pages 3.2.4 to 3.2.7

While the control gas passes through the analyzer after a calibration sequence, the MSRS sensor status is diagnosed to assess the working order of the analyzer.

The system compares the theoretical and measured concentration of the control gas.

To begin this diagnosis complete a calibration sequence (see Section 4.1.1). When the calibration is over, screen page 3.2.4 will appear.

Alternatively if the reading was stable and the calibration was forced from screen page

3.2.3 by pressing the

VALID key, then screen page 3.2.4 will appear.

Adjustment

Control

Passage of a control gas :

End of Adjustment :

Measure VALID

Figure 50

Screen Page 3.2.4

VALID Measure

3.2.4

Pressing the Measure key will show screen page 3.2.7. To return to the measurement, close the adjustment gas cylinder. Pressing the VALID key will take you to screen page

3.2.8. A purge ends the calibration sequence.

Pressing the VALID key will start the Control gas process. The following screen page

3.2.5 will appear:

Adjustment

Control

Cancel

Control gas :

Control time

Figure 51

2.00 % 25 min 00 s

Flow

2.5 L/h

Screen Page 3.2.5

3.2.5

VALID

Pressing the Cancel key will take you to 3.2.8.

Michell Instruments 59

CALIBRATION

Press the VALID key after opening the control gas cylinder to give a ﬂ ow rate of 2 l/h

±1 l/h and waiting until the control gas has cleared the process gas away from the internal sample path. Screen page 3.2.6 will appear:

XZR400 Series User’s Manual

Adjustment

Control progressing

Standard gas : remaining time : Concentration O2

Cancel

Figure 52

2.00 % 24 min 04 s

19.1 %

Flow

2.5 L/h

after 1min

Screen Page 3-2-6

3.2.6

Op forced

From this screen it is possible to:

• Force calibration after 1 minute if the reading is stable. Press the Op

forced after 1min

• Cancel calibration at any time. Press the

key and screen page 3.2.7 will show (after 1 minute).

Cancel key and go to screen

page 3.2.8.

At the end of the veriﬁ cation period, the diagnosis will appear on screen page 3.2.7:

Adjustment

3.2.7

Close ctrl gas bottle then VALID

=> Sensor OK

Cancel

Figure 53

Screen Page 3-2-7

VALID

Three outcomes are possible and will be displayed as a message on the third row of the screen:

• The analyzer is operative.

• The analyzer’s performance is not optimal. The MSRS sensor should be replaced at some time in the near future.

• The analyzer’s performance is poor. Change the MSRS sensor immediately.

Pressing the

Cancel key will return to the Main Screen.

Closing the control gas cylinder and pressing the VALID key will take you to screen page 3-2-8.

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Managing The Alarms During The Calibration Sequence

The alarms can be active or inactive during the calibration sequence.

CALIBRATION

When are not active during the calibration sequence.

When will be activated during the calibration sequence and will respond according to the conﬁ guration set by the user.

De-Activation of Alarms

The alarms may be de-activated during installation and set-up. If the alarms are deactivated and the system detects a fault and/or an alarm threshold is passed, the alarm relays are not activated. In this case a message describing the fault will appear at the bottom of the default screen page 3.

When

NO is on in the Active during ADJ section on screen page 5-3 the alarm contacts

YES is on in the Active during ADJ section on screen page 5-3 the alarm contacts

NO is on in the Inhibit Alarms section the alarms are operative.

YES is on in the Inhibit Alarms section the alarms are de-activated.

Michell Instruments 61

MAINTENANCE

XZR400 Series User’s Manual

5 MAINTENANCE

5.1 Troubleshooting Guide / Failure Analysis

Observation Cause Corrective Action

Fuse blown • Replace mains fuse:

• Fuse Box: T2A/250V

• Mains socket: T6.3A/250

Mains power plugged in and switched on but no display present

Analyzer not powered

Display disconnected

Faulty analyzer Return the analyzer to Michell Instruments for further

BEWARE OF ELECTRIC SHOCK / BURN HAZARD

• Remove the analyzer cover

• Measure the main inlet voltage

• If the measured voltage is 90 to 264 V AC verify the mains power to the analyzer

BEWARE OF ELECTRIC SHOCK / BURN HAZARD

• Remove the analyzer cover

• Ensure the plugs of the 20-way ribbon cable are connected to both the display PCB and the mother board and that the wiring is intact

• Ensure the plugs of the 2-way cable are connected to both the display PCB and the mother board and that the wiring is intact

• Ensure the plugs of the 4-way cable are connected to both the display PCB and the mother board and that the wiring is intact

investigation

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Observation Cause Corrective Action

Analyzer initializing

Power supply undervoltage

Wait for up to 20 minutes to allow the analyzer's oven to stabilize at the correct temperature

BEWARE OF ELECTRIC SHOCK / BURN HAZARD

• Remove the analyzer cover

• Measure the main inlet voltage

• If the measured voltage is 90 to 264 V AC verify the mains power to the analyzer

MAINTENANCE

Display indicates

Low Temp

Faulty heater element

15 V supply faulty

Thermocouple short circuit

Gas ﬂ ow exceeds limit

Faulty analyzer

BEWARE OF ELECTRIC SHOCK / BURN HAZARD

• Remove the analyzer cover

• Measure the resistance of the heater across J11 pins 10-11

• If 8 < measured value < 11 replace the oven

BEWARE OF ELECTRIC SHOCK / BURN HAZARD

• Remove the analyzer cover

• Measure voltage across J11 pin 11 to J12 pin 10

• If 13 V < measured value < 15 V return the analyzer to Michell Instruments for further investigation

BEWARE OF ELECTRIC SHOCK / BURN HAZARD

• Remove the analyzer cover

• Replace the MSRS Sensor Assembly

• Recalibrate instrument

Reduce the gas sample ﬂ ow to 2 l/hr ±1 l/hr

Return the analyzer to Michell Instruments for further investigation

Michell Instruments 63

MAINTENANCE

XZR400 Series User’s Manual

Observation Cause Corrective Action

Open circuit thermocouple

BEWARE OF ELECTRIC SHOCK / BURN HAZARD

• Remove the analyzer cover

• Check for faulty wiring of sensor - repair as necessary

• Replace the MSRS / thermocouple sensor

Display Indicates

T/C Fault

Broken thermocouple

assembly

• Recalibrate instrument

BEWARE OF ELECTRIC SHOCK / BURN HAZARD

• Remove the analyzer cover

• Replace the MSRS / thermocouple sensor assembly

• Recalibrate instrument

Faulty analyzer

Gas ﬂ ow too low

Return the analyzer to Michell Instruments for further investigation

BEWARE OF ELECTRIC SHOCK / BURN HAZARD

• Remove the analyzer cover

• Measure voltage across J11 pin 11 to J12 pin 10

• If 13 V < measured value < 15 V return the analyzer to Michell Instruments for further investigation

Display Indicates

Low Flow

Leak in gas sample path

BEWARE OF ELECTRIC SHOCK / BURN HAZARD

• Remove the analyzer cover

• Ensure all gas ﬁ ttings are tight

• If the problem persists return the analyzer to

Faulty electronic ﬂ ow meter

Faulty analyzer

Michell Instruments for further investigation

Return the analyzer to Michell Instruments for further investigation

• Open the ﬂ ow adjustment valve

• Close the bypass valve

• Adjust both valves to achieve a gas sample ﬂ ow to 2 l/hr ± 1 l/hr

Return the analyzer to Michell Instruments for sensor replacement

Return the analyzer to Michell Instruments for further investigation

Display Indicates

High Flow

Gas ﬂ ow too high

Faulty electronic ﬂ ow meter

Faulty analyzer

64 97472 Issue 3, August 2018

XZR400 Series User’s Manual

Observation Cause Corrective Action

Display indicates

Sensor Fault

Faulty wiring to sensor

Faulty sensor

BEWARE OF ELECTRIC SHOCK / BURN HAZARD

• Remove the analyzer cover

• Check wiring from MSRS sensor assembly to J12 pin 1-3

• Replace the MSRS / thermocouple sensor assembly

BEWARE OF ELECTRIC SHOCK / BURN HAZARD

• Remove the analyzer cover

• Replace the MSRS / thermocouple sensor assembly

MAINTENANCE

Display indicates

Pressure Fault

Calibration gas measurement fault

Faulty analyzer

Internal pressure sensor fault

Return the analyzer to Michell Instruments for further investigation

No signal from external pressure sensor

BEWARE OF ELECTRIC SHOCK / BURN HAZARD

• Remove the analyzer cover

• Check wiring to ensure 4-20 mA input signal is present J12 pin 9-10

• Replace external sensor if problem persists

No power to external pressure sensor

Faulty analyzer

Gas measures out of speciﬁ cation

Check the power supply to external sensor

Return the analyzer to Michell Instruments for further investigation

Calibrate analyzer

Calibration gas empty Check calibration gas cylinder - replace if empty

Faulty analyzer Return the analyzer to Michell Instruments for further

investigation

After calibration and during calibration gas veriﬁ cation O

outside

tolerance

Unstable measurement Wait for measurement to stabilize

Sensor gas path leak

BEWARE OF ELECTRIC SHOCK / BURN HAZARD

• Remove the analyzer cover

• Ensure all gas ﬁ ttings are tight

• If the problem persists return the analyzer to

Faulty MSRS Sensor

Michell Instruments for further investigation

BEWARE OF ELECTRIC SHOCK / BURN HAZARD

• Remove the analyzer cover

• Replace the MSRS / thermocouple sensor assembly

Faulty analyzer Return the analyzer to Michell Instruments for further

investigation

Michell Instruments 65

APPENDIX A

XZR400 Series User’s Manual

Appendix A

Technical Speciﬁ cations

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Appendix A Technical Speciﬁ cations

Sensor Type

Measurement Principle

Performance

Gas Clean, dry, oil free with particles less than 3 m

Measurement Range

Lowest detectable limit (LDL)

Accuracy (Intrinsic Error) Less than 2% of reading Response Time < 11 seconds Repeatability ±0.1% of reading Stability 1% per month Linearity Better than ±1% Drift <1% of reading per week Sample Flow Rate 1 to 3 Nl/h with built-in fast loop Maximum Sample Pressure 2 barg (29 psig) Maximum Sample

Temperature Atmospheric Pressure

Compensation

Optional sensor

Moisture sensor

Measurement range -100 °C to + 20 °C

Zirconium Oxide Sensor with Metallic Sealed Reference and S Type thermocoupe

0.1 ppm up to 25% O

Extended ranges available up to 0 to 100% O

0.1ppm(v) O

+100°C (+212

°F)

Built-in as standard

Easidew sensor can be ﬁ tted as an option. Please, see a separate datasheet for full speciﬁ cations.

APPENDIX A

Sample Flow rate 60 to 300 Nl/hour

Outputs

Analog Output 0, 1 or 2 off 0/4-20 mA Linear with Galvanic Isolation output Digital Communications

Output

Modbus RTU over RS485 protocol (Standard on XZR400A1)

RS232 output (optional) Output Load Over 1,000  Self-Diagnostics Via HMI

Output Ranges

0.0 ppm to 1ppm up to 0 to 25% O

Extended ranges available up to 0 to 100% O2

2 threshold alarms, freely conﬁ gurable Alarms

1 general fault alarm including ﬂ ow alarm

1 ﬂ ow alarm (optional)

0.01 ppm between 0.1 ppm and 10 ppm

Display Resolution

0.1 ppm between 10 ppm and 10,000 ppm

0.01% between 1 to 10%

0.1% between 10 to 25% Power Supply 90 to 264 V AC, 47/63 Hz Power Consumption 50 VA

Operating Conditions

Ambient Temperature Range

0 to +55°C (+32 to +131°F)

Michell Instruments 67

APPENDIX A

Sensor Temperature Optimized at 634°C Operating Humidity 5 to 90% RH without condensation

Mechanical Speciﬁ cation

Model Dimensions Weight Gas Connectors

Rack mount: 19’’, 3U, 482.5 x 133 x 371.5mm 10kg 1/8" IP20 Wall mount: 200 x 220 x 290mm 5kg 6 mm IP40 Bench mount: 290 x 260 x 236mm 5.2kg 6 mm IP20 Transportable: 450 x 300 x 330mm 13.5kg 6 mm IP40

Sample Gas Connections All gas connections are Swagelok (MALE) Fittings (316 SS)

XZR400 Series User’s Manual

Ingress

Protection

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APPENDIX B

Appendix B

Modbus (RTU)

over RS485

Michell Instruments 69

APPENDIX B

Appendix B Modbus (RTU) over RS485

B.1 Port Conﬁ guration

• Speed: 9600 bauds

• No parity

• 8 bits

• 1 stop

• No handshaking

B.2 Hardware Conﬁ guration

16 way terminal block connections

XZR400 Series User’s Manual

1 2 3 4 5 6 7 8 9 10111213141516

• pin 14 RS485 B - Data (-)

• pin 15 RS485 A - Data (+)

• pin 16 RS485 0V

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XZR400 Series User’s Manual

B.3 RS485 Register Map

APPENDIX B

Name

Address

[Hex]

Address

[Dec]

Modbus

Command

Type

[R/W]

Data Type Notes

Standard

Access

Expert Access

DISPLAY PARAMETERS

O2 Measurement 0x100 256 3 R 32 Bit Real

0-250 000ppm

(IEEE-754)

Yes Yes

Oven Temperature 0x104 260 3 R 32 Bit Real (IEEE-754) Yes Yes

Ambient Temperature

MSRS Sensor Voltage

Atmospheric Pressure

0x108 264 3 R 32 Bit Real (IEEE-754) Yes Yes

0x10C 268 3 R 32 Bit Real (IEEE-754) Yes Yes

0x110 272 3 R 32 Bit Real (IEEE-754) Yes Yes

Flow 0x114 276 3 R 32 Bit Real (IEEE-754) Yes Yes

ADJUSTMENT PARAMETERS

Adjustment Gas 0x120 288 3/16 R/W 32 Bit Real (IEEE-754) Yes Yes

Control Gas 0x124 292 3/16 R/W 32 Bit Real (IEEE-754) Yes Yes

Adjustment Duration

0x128 296 3/6 R/W 16 Bit

Control Duration 0x12A 298 3/6 R/W 16 Bit

ADJ.Gas Time

[Mins]

Control Gas Time

[Mins]

Yes Yes

Duration of

Purge Duration 0x12C 300 3/6 R/W 16 Bit

Purge

Yes Yes

[Mins]

Start Adjustment

TBA TBA 3 R 16 Bit Yes Yes

CONFIGURATION

Oven Set Temperature

0x160 352 3/16 R/W 32 Bit Real

634 Nom (IEEE-

754)

No Yes

ANALOG OUTPUT 1

Type: Lin / Log 0x150 336 2/5 R/W Bit

Bit X 0=Lin

1=Log

No Yes

Low Limit 0x130 304 3/16 R/W 32 Bit Real (IEEE-754) No Yes

High Limit 0x134 308 3/16 R/W 32 Bit Real (IEEE-754) No Yes

ANALOG OUTPUT 2

Type: Lin / Log 0x150 336 2/5 R/W Bit

Bit X 0=Lin

1=Log

No Yes

Low Limit 0x138 312 3/16 R/W 32 Bit Real (IEEE-754) No Yes

High Limit 0x13C 316 3/16 R/W 32 Bit Real (IEEE-754) No Yes

ALARM OUTPUT 1

Type 0x150 336 2/5 R/W Bit

Bit X 0=Lin

1=Log

No Yes

Threshold 0x140 320 3/16 R/W 32 Bit Real (IEEE-754) No Yes

ALARM OUTPUT 2

Type 0x150 336 2/5 R/W Bit

Bit X 0=Low

1=High

No Yes

Threshold 0x144 324 3/16 R/W 32 Bit Real (IEEE-754) No Yes

STATUS Byte 0x154 340 3 R Bit See table below No Yes

Firmware Revision 0x158 344 3 R Bit

207=FW Rev

2.07

Yes Yes

Michell Instruments 71

APPENDIX B

XZR400 Series User’s Manual

STATUS BYTE

Bit Description (Conﬁ guration) Bit Description (Options)

0 Calibration Error 16 2nd 4-20 mA 1 0=FR (French) 1=GB (English) 17 Automatic calibration 2 1=DE (German) 0=French/English 18 Unused Bit 3 Unused Bit 19 Unused Bit 4 1=Alarms active during manual calibration 20 External pressure measurement 5 1=Disable analog outputs during manual calibration 21 Flow alarm (Alarm 4) 6 1=Alarms active during automatic calibration 22 Pump state 7 1=Disable analog outputs during automatic calibration 23 RS232 8 1=Automatic calibration active 24 RS485

9 External pressure control 25 Cleaning 10 External calibration password 26 Pressure sensor 11 Unused Bit 27 Unused Bit 12 Pump state 28 Unused Bit 13 Unused Bit 29 Unused Bit 14 Unused Bit 30 Unused Bit 15 Unused Bit 31 Unused Bit

72 97472 Issue 3, August 2018

XZR400 Series User’s Manual

APPENDIX C

Appendix C

RS232 Serial Output

Michell Instruments 73

APPENDIX C

Appendix C RS232 Serial Output

C.1 Port Conﬁ guration

•

• Speed: 9600 bauds

• No parity

• 8 bits

• 1 stop

• No handshaking

C.2 Hardware Conﬁ guration

The wiring cable should be equipped with 1 DB9 female plug and bare wire connectors and connected as follows:

XZR400 Series User’s Manual

DB9

16 way

terminal block

pin 2 pin 15 Tx pin 3 pin 14 Rx pin 5 pin 16 Ground

strap 7-8

(on same connector)

DB9

16 way

terminal block

74 97472 Issue 3, August 2018

XZR400 Series User’s Manual

C.3 RS232 Command List

Mnemonic ASCII Value

APPENDIX C

_OXY

_TEM _UMV _AMB

_ALR

_CAL

_FIN

_ACQ

_ETA

E_ETA_X.XX

_STP

E_STP_XXX.XX

_AL1

E_AL1

_AL2

E_AL2

_NET

_YYY

_TCA

_BRK

_PAB

concentration

Oven temperature XXX.XX

MSRS voltage XXX.XX

Ambient temperature XX.XX

K1, K2, K3 Relay status

K1 +K2 +K3 = from 0 to 7

(1) (2) (4)

Sets self calibration after 10 minutes bleed

Sets a 5 minute bleed in case of failure in calibration

Acknowledges the alarms RECEIPT

Display of calibration gas value XX.XX

Set of calibration gas value X.XX

Display of oven temperature set point XXX.XX

Set of oven temperature XXX.XX

Display of ﬁ rst alarm level XXX.XX

Set of ﬁ rst alarm level XX.XX

Display of second alarm level XXX.XX

Set of second alarm level XX.XX

Starts self cleaning RECEIPT

Unknown entry ERROR

Measured oven temperature + coef. due to

adjustment

Allows for: Ending the bleed during calibration

Ending self cleaning and start cooling down

Value of atmospheric pressure XXXX.XX

XX.XX

or X.XXE±XX

RECEIPT

PURGE?

RECEIPT

DEFAULT

XX.XX

_ indication corresponds to the space bar  indication corresponds to the return key

Table 2 RS232 Commands

Michell Instruments 75

APPENDIX D

XZR400 Series User’s Manual

Appendix D

Extended Operating Range

(Optional)

76 97472 Issue 3, August 2018

XZR400 Series User’s Manual

Appendix D Extended Operating Range - (Optional)

This option should be requested at the time of order stating the maximum oxygen percentage required - 0 to 30% or 0 to 50%.

The default range is 0 to 25%.

NOTE: If an extended range is supplied then this will result in a reduction in resolution and accuracy below 1% O2.

WARNING: If an extended range is purchased ensure that the

analyzer has been cleaned for oxygen service before use.

APPENDIX D

Michell Instruments 77

APPENDIX E

XZR400 Series User’s Manual

Appendix E

Process Pressure Correction

(Optional)

78 97472 Issue 3, August 2018

XZR400 Series User’s Manual

Appendix E Process Pressure Correction - (Optional)

When the process gas pressure is out of the atmospheric pressure range, the process pressure correction is required to guarantee the optimal efﬁ ciency of the analyzer.

The input signal is a 4-20 mA analog signal from an external pressure transmitter installed by the user at the outlet side of the process.

The following screen is used to conﬁ gure the scale range:

Pressure correction

APPENDIX E

5.6

Start of scale

End of scale

Figure 54

An input signal of 4 mA corresponds to the low scale set value.

A input signal of 20 mA corresponds to the high scale set value.

E.1 Process Pressure Correction Input Connections

The 4-20 mA pressure transmitter signals should be connected to the DB15 socket on the rear panel of the analyzer.

Pressure Correction Screen

0.0 bar abs

2.0 bar abs

345678

910111213 14 15

Contact No Function

5 (+) 4-20 mA / analog input of process pressure 6 (+) 4-20 mA / analog input of process pressure

Michell Instruments 79

APPENDIX F

XZR400 Series User’s Manual

Appendix F

Flow Fault Contact

(Optional)

80 97472 Issue 3, August 2018

XZR400 Series User’s Manual

Appendix F Flow Fault Contact - (Optional)

In normal conditions, the ﬂ ow is between 0.5 l/h and 3.5 l/h, the contact is closed and potential free.

The relay switching capability is 150 W max (up to 5 A at 250 V AC or 5 A at 30 V DC).

F.1 Flow Fault Output Connections

Access to the ﬂ ow fault contact is via the DB15 socket on the rear panel of the analyzer.

APPENDIX F

345678

910111213 14 15

Contact No Function

1 Flow fault contact 2 Flow fault contact

Michell Instruments 81

APPENDIX G

XZR400 Series User’s Manual

Appendix G

Commutable Scale

(Auto-Ranging)

82 97472 Issue 3, August 2018

XZR400 Series User’s Manual

Appendix G Commutable Scale (Auto-Ranging)

This option allows following the O2 concentration:

• Between 0 and 10 ppm on the ﬁ rst 4-20 mA output

• Between 0 and 100ppm, 0 and 1000ppm, 10 and 10000ppm, or 1 and 25% on the second 4-20 mA output

The alarm contacts 1 and 2 indicate the beginning and the end of the scale used on the second 4-20 mA output.

Settings are indicated below:

APPENDIX G

4-20 mA

output

No 1 0 10ppm No 2 0 100ppm Open Open

Low Scale Up Scale

0 1000ppm Closed Open

10ppm 10000ppm Open Closed

1% 25% Closed Closed

Alarm 1 Contact Position

Alarm 2 Contact

Position

Michell Instruments 83

APPENDIX H

XZR400 Series User’s Manual

Appendix H

Optional moisture sensor

84 97472 Issue 3, August 2018

XZR400 Series User’s Manual

Appendix H Optional moisture sensor

The XZR400 rack mount can be supplied with an Easidew moisture sensor ﬁ tted in the bypass leg to measure the moisture (dew point) of the sample. The sensor is capable of measuring dew point from -100°C to +20°C dew point. If supplied with a moisture sensor, dew point will be displayed underneath the oxygen concentration as shown below.

APPENDIX H

Figure 55

In the control parameters page, the dew point is displayed to the right of the O2 concentration as shown in ﬁ gure 56.

Figure 56

In the main menu page, press the button labelled 'DP Sensor' to access the 4 to 20mA conﬁ guration.

Control Parameters Page

Main Page

Figure 57

Main Menu

Michell Instruments 85

APPENDIX H

Even though the dew-point sensor located inside the analyzer, it is considered an external device by the ﬁ rmware. In the DP Sensor page, you can conﬁ gure the intput range from the dew-point sensor by pressing the Start and/or End of scale buttons and adjusting in the normal way. Only adjust these settings if you have already altered the range of the Easidew transmitter.

XZR400 Series User’s Manual

Figure 58

NOTE: The analyzer will require a total ﬂ ow of 60 to 300 Nl/hour (1 to 5 Nl/min) to ensure optimum response from the Easidew sensor.

DP Sensor Page

86 97472 Issue 3, August 2018

XZR400 Series User’s Manual

APPENDIX I

Appendix I

Quality, Recycling

& Warranty

Information

Michell Instruments 87

APPENDIX I

XZR400 Series User’s Manual

Appendix I Quality, Recycling & Warranty Information

Michell Instruments is dedicated to complying to all relevant legislation and directives. Full information can be found on our website at:

www.michell.com/compliance

This page contains information on the following directives:

• ATEX Directive

• Calibration Facilities

• Conﬂ ict Minerals

• FCC Statement

• Manufacturing Quality

• Modern Slavery Statement

• Pressure Equipment Directive

• REACH

• RoHS2

• WEEE2

• Recycling Policy

• Warranty and Returns

This information is also available in PDF format.

88 97472 Issue 3, August 2018

XZR400 Series User’s Manual

Appendix J

APPENDIX J

Analyzer Return Document

Decontamination Declaration

Michell Instruments 89

APPENDIX J

XZR400 Series User’s Manual

Appendix J Analyzer Return Document & Decontamination Declaration

'HFRQWDPLQDWLRQ&HUWL¿FDWH

IMPORTANT NOTE: Please complete this form prior to this instrument, or any components, leaving your site and being returned to us, or, where applicable, prior to any work being carried out by a Michell engineer at your site.

Instrument Serial Number Warranty Repair? YES NO Original PO # Company Name Contact Name

Address

Telephone # E-mail address Reason for Return /Description of Fault:

Has this equipment been exposed (internally or externally) to any of the following? Please circle (YES/NO) as applicable and provide details below

Biohazards YES NO Biological agents YES NO Hazardous chemicals YES NO Radioactive substances YES NO Other hazards YES NO Please provide details of any hazardous materials used with this equipment as indicated above (use continuation sheet

if necessary)

Your method of cleaning/decontamination

Has the equipment been cleaned and decontaminated? YES NOT NECESSARY Michell Instruments will not accept instruments that have been exposed to toxins, radio-activity or bio-hazardous

PDWHULDOV)RUPRVWDSSOLFDWLRQV LQYROYLQJVROYHQWVDFLGLFEDVLFÀDPPDEOHRUWR[LFJDVHVDVLPSOHSXUJHZLWKGU\ JDVGHZSRLQW&RYHUKRXUVVKRXOGEHVXI¿FLHQWWRGHFRQWDPLQDWHWKHXQLWSULRUWRUHWXUQ

Work will not be carried out on any unit that does not have a completed decontamination declaration.

Decontamination Declaration

I declare that the information above is true and complete to the best of my knowledge, and it is safe for Michell personnel to service or repair the returned instrument.

Name (Print) Position

Signature Date

F0121, Issue 2, December 2011

90 97472 Issue 3, August 2018

Michell Instruments XZR400 Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual