Michell Instruments QMA601-SYS, QMA601-MON Manual

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QMA601

Process Moisture Analyzer

User’s Manual

97449 Issue 3

June 2018

Please ﬁ ll out the form(s) below for each analyzer that has been purchased.

Use this information when contacting Michell Instruments for service purposes.

Analyzer

Code

Serial Number

Invoice Date

Location of Analyzer

Tag No

Analyzer

Code

Serial Number

Invoice Date

Location of Analyzer

Tag No

Analyzer

Code

Serial Number

Invoice Date

Location of Analyzer

Tag No

QMA601

For Michell Instruments' contact information please go to

www.michell.com

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

otherwise reproduced, communicated in any way to third parties, nor stored in any Data

Processing System without the express written authorization of Michell Instruments Ltd.

QMA601 User’s Manual

Contents

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

Warnings ................................................................................................................... viii

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

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

Hazardous Materials (WEEE, RoHS2 & REACH) ............................................................. viii

Calibration (Factory Validation) ......................................................................................ix

Repair and Maintenance ...............................................................................................ix

Abbreviations ...................................................................................................................... x

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

1.1 General .............................................................................................................. 1

1.2 Theory of Operation ........................................................................................... 2

1.3 Sample Gas Path ................................................................................................ 3

2 INSTALLATION ..................................................................................................4

2.1 Analyzer Storage Instructions .............................................................................. 4

2.2 Unpacking the Analyzer ...................................................................................... 5

2.3 Lifting and Handling ........................................................................................... 5

2.4 Mounting the Analyzer ........................................................................................ 6

2.5 Hazardous Area/Location Safety .......................................................................... 7

2.6 Electrical Safety .................................................................................................. 8

2.6.1 Equipment Ratings and Installation Details ...................................................... 8

2.6.2 Power Connection ....................................................................................... 10

2.6.3 Other Electrical Connections ........................................................................ 11

2.7 Pressure Safety ................................................................................................ 12

2.8 Gas Sample Connections ................................................................................... 13

3 OPERATION ....................................................................................................15

3.1 General Operational Information ........................................................................ 15

3.1.1 First Time Operation .................................................................................... 16

3.1.2 Analyzer Set-Up .......................................................................................... 17

3.2 User Interface .................................................................................................. 18

3.2.1 Interface Controls ....................................................................................... 18

3.2.2 ‘Up/Down Arrow’ Keys ................................................................................. 18

3.2.3 'ENTER’ Key ................................................................................................ 19

3.2.4 ‘ESC’ Key .................................................................................................... 19

3.2.5 Pop Up Keypad ........................................................................................... 19

3.3 Menu Structure ................................................................................................ 20

3.4 Description of Measured Parameters .................................................................. 21

3.5 Main Screen .................................................................................................... 21

3.5.1 Large Display Mode ..................................................................................... 23

3.6 Main Screen Sub Menus .................................................................................... 25

3.6.1 Warning Screen .......................................................................................... 25

3.6.2 Logging Screen ........................................................................................... 26

3.6.3 Alarm Screen .............................................................................................. 27

3.6.4 Field Calibration Screen ............................................................................... 28

3.6.5 Monitor screen ............................................................................................ 32

3.7 Settings Menu ................................................................................................. 33

3.7.1 Measurement Screen ................................................................................... 33

3.7.2 Outputs Screen ........................................................................................... 38

3.7.3 HMI Screen ................................................................................................ 40

3.7.4 Real Time Clock Screen ............................................................................... 42

3.7.5 Software Communications Screen................................................................. 43

3.7.6 Ethernet Screen .......................................................................................... 43

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QMA601 User’s Manual

3.7.7 Field Calibration History ............................................................................... 44

3.7.8 About Screen .............................................................................................. 44

3.8 Sampling Guidelines ......................................................................................... 46

3.9 Measurement Cycle .......................................................................................... 49

3.10 Calibration Cycle ............................................................................................... 51

4 MAINTENANCE ................................................................................................53

4.1 Safety .............................................................................................................. 54

4.2 Removal and Replacement of the Power Supply Fuse .......................................... 54

4.3 Replacing the Optional Contamination Trap ........................................................ 54

4.4 Removal and Replacement of the Desiccant Column ............................................ 55

5 CALIBRATION ..................................................................................................57

5.1 Traceability ...................................................................................................... 57

6 SHIPPING .......................................................................................................59

6.1 Preparation for Shipping and Packing if Not Supplied as a Sample System ............ 59

7 APPLICATION SOFTWARE OVERVIEW ...............................................................60

7.1 System Requirements ....................................................................................... 60

7.2 System Connection ........................................................................................... 60

7.3 Getting Started ................................................................................................. 61

7.3.1 Connection Method (Serial Connection (RS485 or TCP) .................................. 62

7.3.1.1 RS485 Connection ................................................................................. 62

7.3.1.2 Modbus TCP Connection (Ethernet) ....................................................... 62

7.4 Main Window ................................................................................................... 63

7.5 Using the Chart ................................................................................................ 64

7.5.1 Chart Options Window ................................................................................. 65

7.6 Data Logging ................................................................................................... 66

7.6.1 Configuring Logging Start Time .................................................................... 67

7.6.2 Configuring Logging Stop Time .................................................................... 67

7.6.3 Starting the Log .......................................................................................... 67

7.6.4 Viewing a Log ............................................................................................. 67

7.7 Parameters / Field Calibration ............................................................................ 67

7.7.1 Field Calibration .......................................................................................... 68

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QMA601 User’s Manual

Figures

Figure 1 Measurement System .................................................................................3

Figure 2 Mounting Dimensions .................................................................................6

Figure 3 Earthing Stud And Nut Washer Assembly .....................................................9

Figure 4 24 VDC & 240 V AC Power Unit Connectors ................................................10

Figure 5 Other Electrical Connections ......................................................................11

Figure 6 RJ45 to screw terminal adapter connections ...............................................12

Figure 7 Typical Display .........................................................................................17

Figure 8 User Interface ..........................................................................................18

Figure 9 Up/Down Arrow Keys ................................................................................18

Figure 10 ‘ENTER’ Key .............................................................................................19

Figure 11 ‘ESC’ Key .................................................................................................19

Figure 12 Pop Up Keypad .........................................................................................19

Figure 13 Menu Structure ........................................................................................20

Figure 14 Main Screen .............................................................................................21

Figure 15 Large Display Modes .................................................................................23

Figure 16 Full Screen Graph .....................................................................................24

Figure 17 Warning Screen ........................................................................................25

Figure 18 Logging Screen ........................................................................................26

Figure 19 Alarm Screen ...........................................................................................27

Figure 21 Field Calibration Screen 2 ..........................................................................30

Figure 22 Field Calibration Screen 3 ..........................................................................30

Figure 23 Field Calibration Screen 4 ..........................................................................31

Figure 24 Field Calibration Screen 5 ..........................................................................31

Figure 25 Monitor Screen .........................................................................................32

Figure 26 Settings Menu Screen ...............................................................................33

Figure 27 Measurement Screen ................................................................................34

Figure 28 Carrier Gas Screen ....................................................................................35

Figure 29 Measurement Screen ................................................................................36

Figure 30 External Options .......................................................................................37

Figure 31 Fixed Options ...........................................................................................37

Figure 32 Atmos. Option ..........................................................................................37

Figure 33 User Gas Setup Screen .............................................................................38

Figure 34 Outputs Screen ........................................................................................39

Figure 35 HMI Screen ..............................................................................................40

Figure 36 Real Time Clock Screen .............................................................................42

Figure 37 Software Communications Screen ..............................................................43

Figure 38 Ethernet Screen .......................................................................................43

Figure 39 Calibration History Screen .........................................................................44

Figure 40 About Screen ........................................................................................... 45

Figure 42 Measurement Cycle (Phase 2) Calibration Flow ...........................................50

Figure 43 Calibration Cycle (Phase 1) - Dried Sample Flow .........................................51

Figure 44 Calibration Cycle (Phase 2) - Sample Flow ..................................................52

Figure 45 Typical QMA601 Calibration Certificate .......................................................58

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QMA601 User’s Manual

Tables

Table 1 Pop Up Keypad ..........................................................................................20

Table 2 Main Screen Parameters ............................................................................. 23

Table 3 Large Parameter Display Mode ................................................................... 24

Table 4 Warning Screen ......................................................................................... 27

Table 5 Logging Screen .........................................................................................27

Table 6 Alarm Screen Parameters .......................................................................... 28

Table 7 Calibration Screen Parameters .................................................................... 30

Table 8 Monitor Screen Parameters ....................................................................... 33

Table 9 Measurement Screen ................................................................................. 35

Table 10 Outputs Screen Parameters ....................................................................... 40

Table 11 HMI Setup Screen Parameters ................................................................... 42

Table 12 Real Time Clock Screen Parameters ........................................................... 43

Table 13 Software Communications Screen Parameters..............................................44

Table 15 Calibration History Screen .......................................................................... 45

Table 14 Ethernet Screen Parameters ....................................................................... 45

Table 16 Using the Chart ......................................................................................... 65

Table 17 Chart Options ............................................................................................ 66

Table 18 Modbus Register Map ................................................................................ 83

Appendices

Appendix A Technical Speciﬁ cation ............................................................................... 71

Appendix B Hazardous Area Certiﬁ cation ...................................................................... 74

B.1 Product Standards ....................................................................... 74

B.2 Product Certiﬁ cation .................................................................... 74

B.3 Global Certiﬁ cates/Approvals ........................................................74

B.4 Special Conditions of Use ............................................................. 74

B.5 Maintenance and Installation ........................................................ 75

Appendix C Modbus Holding Register Map ....................................................................77

C.1 Set Points and Ranges ................................................................. 93

C.2 Gases for Gas Correction Values ...................................................94

Appendix D Quality, Recycling, Compliance & Warranty Information ................................ 96

Appendix E Return Document & Decontamination Declaration ........................................ 98

Appendix F Calculating Conversion Factors for Gas Mixes ............................................. 100

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QMA601 User’s Manual

DANGER

Electric

Shock Risk

Safety

The analyzer is designed to be completely safe when installed and operated correctly in accordance with the information provided in this manual.

This manual contains all the required information to install, operate and maintain this product. Prior to installation and use of this product, this entire manual should be read and understood. Installation and operation of this product should be carried out by suitably competent personnel only. The installation and operation of this product must be in accordance with the instructions provided and according to the terms of any associated safety certificates. Incorrect installation and use of this product other than those described in this manual and other than its intended purpose will render all warranties void.

This product meets the essential protection requirements of the relevant EU directives. Further details of applied directives may be found in the product specification.

Electricity and pressurized gas can be dangerous. This product must be installed and operated only by suitable trained personnel.

Warnings

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 and where particular attention to personal and

personnel safety must be observed.

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

indicate areas of potential risk of electric shock.

Electrical Safety

Ensure electrical safety is complied with by following the directions provided here and observing all local operation & installation requirements at the intended location of use.

This product is completely safe when using any options and accessories supplied by the manufacturer of this product for use with it. Refer to Section 2 (Installation) of this manual for further details.

Pressure Safety

For this product to operate satisfactorily, pressurized gas must be connected to it. Observe all the information contained within this manual and all local operation & installation requirements at the intended location of use. Refer to Section 2 (Installation) of this manual for further details.

Hazardous Materials (WEEE, RoHS2 & REACH)

This product does not contain or release any prohibited chemicals listed on the SVHC (Substances of Very High Concern) Candidate List. During the intended normal operation of this product it is not possible for the user to come into contact with any hazardous materials. This product is designed to be recyclable except where indicated, see relevant sections in this manual for further details.

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QMA601 User’s Manual

Calibration (Factory Validation)

Prior to shipment, the analyzer undergoes stringent factory calibration to traceable standards. Due to the inherent stability of the analyzer, regular factory calibration is not required under normal operating conditions. The analyzer should perform reliably for many years with just basic maintenance, housekeeping and regular field calibrations from the internal reference (moisture generator) or a known external reference.

There are, however some consumables that will require periodic replacement.

• Moisture generator - typical lifetime of around 3 years.

• Desiccant column - typical lifetime of around 1 year, but this strongly depends on the moisture content of the sample gas. The drier the sample gas, the longer lifetime of the desiccant.

• Optional contamination trap - typical lifetime of around 1 year, a column of activated charcoal that protects the Desiccant Column from contamination in applications where the process gas composition contains heavy hydrocarbon vapors.

Michell Instruments can provide a fully traceable factory calibration service for the analyzer and it is recommended that this is considered at intervals of every year of the analyzer's life. Please contact your local Michell Instruments' office or representative for further details (www.michell.com).

Repair and Maintenance

Apart from user-replaceable components required for routine operational maintenance described above, the analyzer must only be maintained either by the manufacturer or an accredited service agent. Refer to www.michell.com for details of Michell Instruments’ worldwide offices contact information.

Michell Instruments ix

Abbreviations

The following abbreviations are used in this manual:

AC alternating current atm pressure unit (atmosphere) barg pressure unit (=100 kP or 0.987 atm) gauge °C degrees Celsius °F degrees Fahrenheit EU European Union Hz Hertz IEC International Electrotechnical Commission kg kilogram lb pound lbs/MMscf pounds per million standard cubic foot mA milliampere mV millivolt(s) mbar millibar ml/min milliliters per minute ppm

parts per million (by weight)

ppm

parts per million (by volume)

psig pound(s) per square inch (gauge) RH relative humidity RTU Remote Terminal Unit V Volts W Watts " Inch

QMA601 User’s Manual

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QMA601 User’s Manual

1 INTRODUCTION

1.1 General

The QMA601 Moisture Analyzer is designed to provide reliable, fast and accurate measurement of trace moisture content in a wide variety of process applications where keeping moisture levels as low as possible is of critical importance.

The high-contrast capacitive button operated LCD display presents all measured data to the user in a clear and understandable format. The main display incorporates a realtime trend graph and alarm indicators based on the NAMUR 102 standard. A powerful and intuitive HMI makes control, logging and configuration of analyzer parameters easy.

The analyzer provides two user-configurable analog outputs, and Modbus RTU/TCP communications, allowing it to interface with a SCADA DCS system, or by a computer using the dedicated application software. A set of 4 adjustable volt free alarm contacts allow the QMA601 to be used for direct process control.

Use Your Preferred Communication Media

INTRODUCTION

For greater flexibility, the QMA601 offers:

• Modbus RTU/TCP

• 2 user-configurable analog outputs

• Status and Process Alarms

Minimal & Straightforward Maintenance

Sophisticated analyzers are often complicated and require experience and special care in use, increasing cost of ownership. The QMA601 differs through its very uncomplicated approach to field service; the Desiccant Column is easy to replace via its mounting on the sampling panel. The moisture generator has an average life span of 3 years after which it can simply be replaced with a calibrated moisture generator supplied by Michell Instruments.

Automated Calibration for Continued Reliability

The QMA601 incorporates an integrated automatic calibration system for complete user confidence. Periodic calibration checks of sensor performance can be initiated on demand, or automatically (at user defined intervals and time of day), providing a verification of analyzer performance and automatically adjusting out any change. The moisture generator at the core of this system is supplied with a calibration traceable to NPL and NIST, but an external calibration reference source can also be used if desired.

During a calibration cycle, the Data Hold function will prevent any interruption of dependant processes by holding the analog outputs at the same level for the duration of the calibration.

Michell Instruments 1

INTRODUCTION

Full Hazardous Area Certification

The analyzer is ATEX, IECEx and cCSAus certified. The main unit (electronics and sensing) and associated sampling system may be mounted at a convenient location next to the pipeline or process, with gas sample and vent connections. The analyzer is supplied in either a 85-264 V AC version or a 24 V DC version. The product serial number label will identify the required operating power supply.

Purpose Designed Sample Systems

Sample extraction, handling and conditioning techniques are of critical importance to assure optimal performance and reliability of all gas analyzers which accurately quantify specific components within a process gas composition. Three sample systems have been designed for the most common process moisture analyzer applications:

• Natural Gas Glycol Dehydration & Transmission with an advanced membrane filter to combat liquid contamination.

• Trace Moisture in High Purity & Petrochemical Gases with protection against particulates.

QMA601 User’s Manual

• Trace moisture for Asymmetric Cycle variant, includes membrane filter and 3 way valve for purge gas.

Our QMA601 sample systems facilitate regulation of pressure and flow, and the removal of contaminants, delivering a properly conditioned sample to the analyzer for reliable measurements, and trouble-free operation. The integrated bypass system increases transport speed of the sample while reducing gas wastage. Each high quality sample system is constructed from 316 stainless steel components, with BS EN 10204 3.1 material certificates available on request.

1.2 Theory of Operation

A pair of frequency-matched quartz crystal oscillators are used for measurement and are both exposed to the sample gas. The measurement crystal features a hygroscopic coating to adsorb moisture, whereas the reference crystal is uncoated. As the hygroscopic coating on the measurement crystal adsorbs moisture from the sample, the overall mass of the crystal is increased, modifying the oscillation frequency in a precise, repeatable and measurable manner.

The resulting measurement is highly accurate, and insensitive to changes in background gas composition.

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QMA601 User’s Manual

1.3 Sample Gas Path

The QMA601 measurement system must be supplied with gas at the required pressure (to match that of its calibration) via the 1/4'' female NPT gas inlet on the flame arrestor. The flow is controlled automatically.

The sensor cell is located at the end of the sensor block and contains the sensor and reference oscillators.

Figure 1

HE1 HE2

V1 V2 V3

INTRODUCTION

shows a schematic diagram of this sampling system.

SAMPLE

DD MFC QCH PS

FC1 FC2 FC3

QCH

MFC

Key

Desiccant column

Mass flow controller

Sensor cell

Pressure sensor

Figure 1

MG V1, V2, V3 HE1, HE2 FC1, FC2, FC3

Measurement System

SAMPLE

Moisture generator

Solenoid valves

Heat exchanger

Flow control

OUT

Michell Instruments 3

INSTALLATION

2 INSTALLATION

2.1 Analyzer Storage Instructions

In order for this product to be functional upon installation it should be stored in accordance with the guidelines below:

• The product must be housed in a sheltered area, out of direct sunlight and rain.

• The product should be stored to minimize the possibility of sitting in ground water.

• The temperature within the storage environment should be maintained between -20 to +60°C (-4 to +140°F).

• The humidity within the storage environment must be non-condensing.

• The storage environment must not expose the analyzer to any corrosive elements.

QMA601 User’s Manual

• The product should stay assembled with its sample conditioning system (if supplied).

• All electrical and process connections should remain disconnected and capped.

• All protective coatings should remain in place until installation.

• For prolonged periods of storage, the lid of the packaging crate should be removed to allow air to circulate.

• Any documentation supplied with the product should be removed from the packaging crate and stored elsewhere to protect its integrity.

For the period from installation of the product to commissioning start-up, the following precautions should be followed:

• The product and associated sampling system (if supplied) must remain isolated from the process gas, and the enclosure should remain closed to ensure ingress protection is maintained.

• If supplied, the sampling system enclosure heating/thermostat circuit should be operated if the climatic temperature might fall below +5°C (+41°F).

• At time of start-up the procedures contained in the user manuals for both analyzer and sampling system must be followed.

If the product was previously in service/operation then the following precautions should be followed before storage:

• Upon isolation from the gas sample the entire system should be purged with a dry nitrogen gas before powering down of the analyzer.

• All connections and ports (gas and electrical) to the analyzer or sample system (if provided) should be capped.

• If the product is not removed from its location, the electrical grounding of the analyzer should remain in place.

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QMA601 User’s Manual

2.2 Unpacking the Analyzer

Open the crate and carefully unpack the analyzer.

The accessories box should contain the following items:

• Traceable calibration certificate

• Application software CD

• Users manual

INSTALLATION

WARNING:

The analyzer weighs 35kg (77lbs) alone,

or 50kg (110lbs) in the crate

If there are any shortages please notify the supplier immediately.

NOTE: Retain the packaging in case the analyzer is returned for factory calibration or service.

2.3 Lifting and Handling

The QMA601 is not designed as portable or transportable equipment. The product should be rigidly fixed in position as per the full installation instructions.

The weight of the analyzer is 35kg (77lbs). Therefore, appropriate lifting and handling techniques should be used during the installation process. Before commencing any lifting or handling ensure that its intended location is suitable and appropriately prepared. Make sure that mounting point design considerations have employed locally approved safety factors.

WARNING:

Personnel must observe suitable lifting and handling

precautions.

When handling and installing this analyzer (particularly after removal from its packaging) ensure that it is not dropped, impacted or subjected to high levels of vibration or environmental conditions that may impair its operation.

Michell Instruments 5

INSTALLATION

2.4 Mounting the Analyzer

The analyzer is housed in an aluminum Exd enclosure suitable for wall or panel mounting. Four mounting points are available with M10 clearance holes on fixing centers of X = 308mm and Y = 312mm.

The enclosure provides environmental ingress protection IP66/NEMA4 and should be mounted vertically in a location free of any appreciable vibration. It should be placed in a shaded position to prevent heating effects through sun radiation. The weight of the analyzer is 35kg (77lbs).

Conduit entries are intended for connection to threaded rigid metal conduit or other wiring methods in accordance with Article 501 of the National Electrical Code ANSI/ NFPA 70-2005.

335mm (13.2”)

QMA601 User’s Manual

308mm (12.1”)

Desiccant

Column

Outlet

335mm

(13.2”)

312mm

Sample In

(12.3”)

TOP VIEW

280mm

131mm

(5.2”)

41mm

(11.0”)

(1.6”)

410mm

(

4 off M10

”)

66mm (2.6”)

External Earth Point Marking Label

4 off M20

threaded entries

41mm (1.6”)

50mm (2.0”)

97mm (3.8”)

57mm

(2.2”)

Enclosure

Breather

(do not obstruct)

FRONT VIEW RIGHT VIEW

Figure 2

6 97449 Issue 3, June 2018

Mounting Dimensions

QMA601 User’s Manual

2.5 Hazardous Area/Location Safety

This product is compliant for installation and use in a Hazardous Area/Location. All certificates awarded to this product should be fully examined prior to installation and use.

This product is certified safe for use in an ATEX Zone 1 and

Zone 2 / Class I, Division 1 area only. This product must not

be installed or used within a Zone 0 area.

This product must not be operated within an explosive

atmosphere greater than 1.1 bara (16 psia).

INSTALLATION

WARNING:

This product must not be operated with enriched oxygen

atmospheres (more than 21% oxygen content).

WARNING:

This product must not be operated outside of the

temperature range of +5 to +45°C (+41 to +113°F)

Refer to Appendix B for the Hazardous Area/Location certification details of this product.

Hazardous Area/Location certificates for this product may be downloaded from:

http://www.michell.com.

This product is fitted with a marking label that contains Hazardous Area/Location information pertinent to the suitable location and installation.

During all installation and operation activities, local regulations and permitted working routines must be observed. Installation should only be performed by competent personnel and, where applicable, in accordance with IEC/EN 60079-14:2008 or local equivalents.

Cable glands/barrier glands/conduit seals shall be installed in accordance with the manufacturer’s instructions.

Repair and servicing of this equipment must only be carried out by the manufacturer. An Installation and Maintenance Information Sheet is supplied separately to the manual.

Michell Instruments 7

INSTALLATION

DANGER

Electric

Shock Risk

2.6 Electrical Safety

QMA601 User’s Manual

WARNING:

During the installation of this product ensure that all

applicable national and local electrical safety regulations

are observed.

WARNING:

Isolate the power prior to installation.

WARNING:

Always ensure that power is switched off prior to accessing

the product for any purpose other than normal operation, or

prior to disconnecting any cables.

Fuse

This product is provided with an internally mounted fuse located beneath the power connector.

The fuses are rated at 5 x 20mm anti-surge to IEC60127-2:

Mains 240 V AC 3 A

24 V DC 6.3 A

A replacement fuse can be obtained by contacting Michell Instruments' technical support.

2.6.1 Equipment Ratings and Installation Details

This equipment and all power isolation devices must be installed in a location and position that allows safe and easy access to their operation and is able to rigidly support the equipment.

For location and mounting arrangements - refer to the relevant sections of this manual for further details.

Do not install this equipment in a location that would expose it to impact or high levels of vibration. Installation of this equipment must include the provision of a suitable and locally positioned power isolation switch or circuit breaker. Indication of the purpose of the switch or circuit breaker is strongly recommended. An over-current protection device should be rated to a maximum of 10 A. Ensure that the power supply is sufficient to satisfy the instrument's power consumption requirements.

Any power supply terminals and voltages must be suitably separated from the other input/output requirements of this product.

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QMA601 User’s Manual

The product enclosure is supplied with an external protective earthing/grounding terminal at the lower right hand side as shown in the figure below. As the first step of the electrical installation - connect this earthing/grounding terminal to plant earth/ ground by a minimum 4mm comprises of an earth bolt, 2 x plain washers and 1 x spring washer, which are all nickel plated.

INSTALLATION

earth/ground bond strap. The earthing/grounding terminal

Figure 3

Mains Powered Units

As a minimum, the power connection cable should be 3 core over sleeved, with minimum 0.5mm insulation and rated at 300 V. Cables should have Live (L), Neutral (N) and Earth [Ground] (E) conductors.

Ensure suitably rated power supply cables and glands are used to ensure that electrical safety is maintained. Connect each of the Live (L), Neutral (N) and Earth [Ground] (E) conductors to the similarly marked terminals (L, N, E) on the Power In connector shown above.

24 V DC Units

The cable should be rated at a minimum of 10 A at 50 V DC with minimum

0.5mm insulation. Connect the +24 V conductor to the terminal marked + and the 0 V conductor to the terminal marked -.

Before applying power, perform a continuity test to ensure that the power supply cable and product are effectively connected to the protective earth. A protective earth terminal is mounted internally and the Earth wire connected to it should never be disconnected.

Earth Bolt And Nut Washer Assembly

Do not remove or exchange any of the cables, electrical components or any other parts supplied with this product. Doing so will invalidate all warranties.

If installing rigid conduit, a stopping fitting must be installed within 46cm (18") of the enclosure.

There are no additional or special electrical safety requirements other than those referred to in this manual.

Michell Instruments 9

INSTALLATION

DANGER

Electric

Shock Risk

This product is designed to be safe under the following conditions: between a temperature range of -40 to +60°C (-40 to +148°F), in maximum 80% relative humidity for temperatures up to +31°C (+88°F) decreasing linearly to 50% RH at +50°C (+122°F). Supply voltages of ±10% and transient over voltages up to Overvoltage Category II. Pollution Degree 2. Altitudes up to 2000m. Outdoor mounting is permitted

using suitably rated glands equivalent to NEMA 4 / IP66. See Appendix A, Technical

Specification, for full operating parameters.

2.6.2 Power Connection

The product is provided with 4 x M20 threaded cable gland entries for customer connection. Only these gland entry points may be used. The end user/installer is not permitted to machine additional entries into the enclosure.

This equipment must be supplied with a voltage between the range of 85 to 264 V AC, 47/63 Hz (140 W max) or 24 V DC (140 W max) to function correctly. Cable entry into the measurement system is made through the bottom of the enclosure.

QMA601 User’s Manual

For an 85/264 V AC powered unit the terminals are marked:

L Live (= IEC Brown) N Neutral (= IEC Blue) E Earth/Ground (= IEC Green/Yellow)

For a 24 V DC powered unit, the terminals are marked:

+ 24 V DC

- 0 V DC

All power connections are made via a removable screw terminal connector mounted on the mains connection PCB shown in

Figure 4.

Figure 4

24 V DC & 240 V AC Power Unit Connectors

All input and output connectors are 2-part pcb mounted type rated @ 300 V 10 A. The detachable, screw terminal half of each connector is designed to accept 0.5 to 2.5mm2 (24

-12 AWG) stranded or solid conductors. The connector 2-pin for 24 V DC and 3-pin for 240 V AC.

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QMA601 User’s Manual

2.6.3 Other Electrical Connections

The power supply (shown below as a silver box) will not be in the 24 V DC version.

INSTALLATION

Figure 5

1 Analog Outputs

21 OP220 OP2+ 19 OP118 OP1+

2 External Pressure

17 – 16 +

3 Alarms 3-4

15 COM4 Analyzer Status Alarm 14 NO4 13 NC4 12 COM3 11 NO3 10 NC3

Other Electrical Connections

NO in warning/fault condition NC no warning/ no fault

4 Alarms 1-2

9 COM2 8 NO2 7 NC2 6 COM1 5 NO1 4 NC1

5 RS485

3G 2B 1A

Michell Instruments 11

INSTALLATION

QMA601 User’s Manual

Pin 1

Pin 8

Figure 6

Pin Signal Name Description Cable Wire Color

1 TX+_D1 Transmit Data+ White with orange stripe 2 TX-_D1 Transmit Data- Orange with white stripe or solid orange 3 RX+_D2 Receive Data+ White with green stripe 4 BI+_D3 Bi-directional+ Blue with white stripe or solid blue 5 BI-_D3 Bi-directional- White with blue stripe 6 RX-_D2 Receive Data- Green with white stripe or solid green 7 BI+_D4 Bi-directional+ White with brown stripe

8 BI-_D4 Bi-directional- Brown with white stripe or solid brown

2.7 Pressure Safety

RJ45 to screw terminal adapter connections

WARNING:

This product is used in conjunction with pressurized gases.

Observe pressurized gas handling precautions.

WARNING:

Pressurized gas is dangerous and should only be handled by

suitably trained personnel.

DO NOT permit pressures greater than the specified safe working pressure to be applied directly to the analyzer.

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QMA601 User’s Manual

Unless otherwise specified the QMA601 is calibrated at

a sample pressure of 3 barg (43.5 psig) on the gas inlet,

and a back-pressure of 2 barg (29 psig) on the outlet.

Operating the analyzer at a different pressure invalidates

Similarly, gas pressure affects the output of the internal

moisture generator, thereby invalidating further auto

calibrations which use a built-in moisture generator as a

2.8 Gas Sample Connections

The following points should be considered when installing the sample gas supply line:

• PTFE tape is recommended for pipe connections.

• Solvent based pipe thread sealant should not be used, as condensable components or contaminates can be leached during the curing period.

INSTALLATION

the calibration.

reference.

Care and attention to the position and installation of the tubing will minimize problems caused by avoidable contamination. The most common issue with of sample flow is the accumulation of liquid in impulse lines during a shutdown period. If the measurement system has not been isolated, condensate can be displaced, on re-start, into components and associated tubework.

WARNING:

Exd enclosure breather must remain open to atmosphere at

all times, without any obstruction - See Figure 2.

Michell Instruments' recommendations are:

• The sampling point from the process line should be taken from the top of the process line. If a radial probe is used the orifice should face downstream.

• It is recommended that Viton is used for all O-rings.

• The internal volume of the impulse tubing connecting between the process line and this product should be as small as possible to minimize response lag time to changing process conditions.

• Piping should be lagged and/or trace heated if ambient temperatures could cause the sample gas to fall below its dew-point temperature.

• A drain valve should be placed at the lowest point in the system.

• It should be standard procedure to isolate this product during shutdowns or when plant problems are being experienced and to adequately purge the supply lines before restarting.

• The relatively large area of surfaces and internal volume of inline components can be particularly troublesome if contamination is experienced.

Michell Instruments 13

INSTALLATION

Prolonged purging, or stripping and cleaning, followed by re-purging with gas may be necessary to remove the contamination.

• Avoid sample gas streams that are already very close to the dew point or which have dispersed liquid within them. In such cases, sampling from fast loops and/or from downstream of existing catch pot/coalesce systems is always preferred.

Failure to observe these recommendations will potentially cause problems of contamination as well as causing consequential inaccurate, unreliable and inconsistent monitoring. If a top-entry sample point is not available, extra attention should be given to the design of the sample line installation to avoid unwanted contamination.

QMA601 User’s Manual

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3 OPERATION

This section describes both the general operation of the analyzer and the method of setting-up and changing the default parameters should this become necessary.

NOTE: Before operating the analyzer read Sections 1 to 3 which explain the analyzer’s functionality, installation, controls, display functions and screens.

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 required and as described in Section 2. The analyzer must also have been installed as detailed in Section 2 and connected to a sample gas supply that is representative of the monitored process.

3.1 General Operational Information

OPERATION

Operation of the QMA601 is completely automated and once set-up requires little or no operator intervention.

Michell Instruments 15

OPERATION

3.1.1 First Time Operation

To commence operation, proceed as follows:

1. Connect the sampling line to the sample system. It is recommended to heat trace the sample gas line.

2. Switch on the power supply to the analyzer. The Initializing Screen will appear.

QMA601 User’s Manual

QMA601

Process Moisture Analyzer

Initializing

3. After the initializing period has finished, the following display will appear.

Oven heating to set point, please wait!

Skip

4. This heating period lasts about an hour allowing time for the internal sampling system to be purged with the sample gas.

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3.1.2 Analyzer Set-Up

During the period when the oven is heating to set point, all functions, except for HMI adjustments, are disabled until the oven has reached its operating temperature. Press the

ENTER key to enter the HMI Screen (see Section 3.73) to set up the temperature

and pressure units before operating the analyzer for the first time. Note: Pressing the ENTER key only takes you to the HMI screen when the oven heating message with "skip" button is present.

OPERATION

Parameter

1 & 2

Figure 7

Using the inlet pressure regulator adjust the sample pressure until the reading on the internal sensor pressure readout matches the value on the calibration certificate. The back-pressure should also be adjusted to the value shown on the calibration certificate.

Unless otherwise specified the QMA601 is calibrated at

a sample pressure of 3 barg (43.5 psig) on the gas inlet,

and a back-pressure of 2 barg (29 psig) on the outlet.

Operating the analyzer at a different pressure invalidates

Similarly, gas pressure affects the output of the internal

moisture generator, thereby invalidating further auto

calibrations which use a built-in moisture generator as a

Typical Display

the calibration.

reference.

Michell Instruments 17

OPERATION

3.2 User Interface

The QMA601 features a 7” color display.

3.2.1 Interface Controls

QMA601 User’s Manual

Four capacitive touch keys are used to navigate the menu system.

Key presses are detected through the glass front panel, and are indicated by a blue LED above the key.

3.2.2 ‘Up/Down Arrow’ Keys

Up () and Down () keys are used to move to required menu items. The

The selected menu item is surrounded by a black frame.

Figure 8

Figure 9

User Interface

Up/Down Arrow Keys

Numerical options activate a pop up keypad. For more information on the keypad see Section 3.2.5.

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3.2.3 'ENTER’ Key

OPERATION

ENTER

The ENTER key is used to navigate into menus, open keypads, cycle through options,

and accept changes.

For non-data entry options pressing the

3.2.4 ‘ESC’ Key

The ESC key is used to return to the previous menu and is also used to leave keypads without accepting any changes.

Figure 10

Figure 11

‘ENTER’ Key

ENTER key moves to the next available option.

ESC

‘ESC’ Key

Michell Instruments 19

OPERATION

3.2.5 Pop Up Keypad

Allows the user to enter numerical data. The figures below the box indicate the minimum and maximum limits which can be entered.

QMA601 User’s Manual

000.0

0.0 to 300.0

Figure 12

Key Action Note

ESC

Up () and Down ()

ENTER

Moves cursor to last digit. Exits to previous page.

Increments or decrements selected number.

Moves cursor to next digit. If at last digit, and within allowable range, updates value.

Table 1 Pop Up Keypad

Pop Up Keypad

If outside the allowable range then a message displays informing the user.

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3.3 Menu Structure

LARGE DISPLAY

PARAMETER 1

LARGE DISPLAY

PARAMETER 2 FULL SCREEN

GRAPH

SETTINGS

MEASUREMENT

OUTPUTS

HMI

RTC

SW COMMS

CAL HISTORY

ABOUT

FIRMWARE VER SERIAL NUMBERS

MAIN SCREEN

WARNINGS

LOGGING

ALARMS

FIELD CAL

MONITOR

CARRIER GAS DP CALCULATION

PRESSURE INPUT

OUTPUT SELECT PARAMETER OUTPUT TYPE LOW HIGH ERROR INDICATION

LANGUAGE CHART PERIOD SIGNAL SMOOTHING

TEMP UNIT

PRESSURE UNIT FLOW UNIT PARAMETER 1 PARAMETER 2

OVEN TEMP CNTL ENCLOSURE TEMP FLOW CONTROL CELL PRESSURE EXT PRESSURE

INSTRUMENT DRIFT

BEAT FREQUENCY PPMV OVER RANGE

LOG PAGE

ALARM SELECTOR CLEAR LATCH LATCH

CALIBRATE ANALOG O/P HOLD CAL SOURCE CAL METHOD SETTLING CYCLES CALIBRATION CYCLES

MOISTURE CONTENT (PPMV) BEAT FREQ (HZ) DELTA FREQ (HZ) ENCL TEMP (°C) FLOW RATE (ML/MIN) CELL PRESSURE (BARG) EXT PRESSURE (BARG)

MOIST GEN SERVICE

CAL ALARM

OPERATION

OVEN TEMP SENS OUTPUT 1 OUTPUT 2 OSCILLATOR COM ETHERNET COM DRYER SERVICE

PARAMETER LOW HIGH

REF SOLENOID SAMPLE SOLENOID INT. CAL. SOLENOID DRYER VOL REMAINIG % MG REMAINING (DAYS) SCF MGF (PPMV)

Parameter

1 & 2

DAY MONTH

YEAR

SAVE DATE DATE

INSTRUMENT ID PROTOCOL ADDRESS

Figure 13

HOUR MINUTE

SAVE TIME TIME

IP ADDRESS SUBNET MASK DEFAULT GW

Menu Structure

Michell Instruments 21

OPERATION

3.4 Description of Measured Parameters

QMA601 User’s Manual

Moisture content ppm

Moisture content mg/m

Water Vapor Pressure Pa water vapor pressure in pascals

lbs/MMscf pounds of H

Dew point

Oven Temperature Temperature of the internal oven

Flow Gas flow rate

Cell Pressure Pressure measured by the internal pressure transducer

Ext. Pressure

3.5 Main Screen

parts per million of H2O by volume

parts per million of H2O by weight

milligrams of H2O per cubic meter gas

O per million standard cubic feet

dew-point temperature of either ideal or natural gas depending on options set on measurement screen

Pressure measured by an external pressure transducer (if fitted)

Figure 14

Main Screen

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Parameter Description

Parameter 1 & 2

Graph

Alarm 1, 2 & 3

Alarm 4 Internal

Warnings

ΔDP

Live reading of the selected display parameters.

Live graph reading of parameter 1.

The current state of the alarms.

Possible States:

Low – Alarm type is set to Low, and has been triggered because the

selected parameter is below the threshold value.

OK – Alarm has not been triggered. High – Alarm type is set to High, and has been triggered because

the selected parameter is above the threshold value.

Trip - Alarm has been triggered at some point previously but is now

OK. Only occurs when the alarm is set as 'Latched' Analyzer Status Alarm Relay

Activated for warning/fault The parameter selection can be set in the "warnings" menu.

Internal warning alarms.

Possible States: OK, WARNING

Shown as ΔX (where X=the currently selected primary measurement parameter) – Displays the difference between the minimum and maximum graph measurements.

Displays the current analyzer mode.

OPERATION

Inst. Mode

Next Mode

Possible States:

Measure – QMA601 is performing a measurement cycle. Cal Internal – QMA601 is performing a self-calibration using the

internal reference. Cal External – QMA601 is performing a self-calibration using an external reference. Warm up – Oven is still heating to the set-point temperature.

If Inst. Mode = Measure, Next Mode = Next Calibration If Inst. Mode = Cal Internal/External, Next Mode = Next Measurement If Inst. Mode = Heating, Next Mode = Oven Temperature

Possible States: Time until the next mode or Manual

Table 2 Main Screen Parameters

Michell Instruments 23

OPERATION

3.5.1 Large Display Mode

Parameter 1 & 2

QMA601 User’s Manual

To access the large display mode for Parameter 1 and 2, press the Main Screen.

Cell Pressure

3.0

1 H2O ppm

2 DP °C

Alarms

3 Cell Pr. barg

4 Warnings

Figure 15

Displays the current gas phase being analyzed

Press ESC to exit page

Large Parameter Display Mode

Inst. Mode

Next Calibration

Gas Phase

Next Phase

barg

Measure

Manual

Sample

DOWN key from the

30s

Gas Phase

Next Phase

To return to the Main Screen press the

Possible States: Reference, Calibration, Sample

Refer to Sections 3.9 and 3.10 for a description of the measurement and calibration cycles.

Shows the countdown in seconds until the current gas phase ends and the next gas phase begins.

Table 3 Large Parameter Display Mode

ESC key.

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Full Screen Graph

This page displays a full screen graph of Parameter 1.

OPERATION

To access the full screen graph, press the

Figure 16

Up () key from the Main Screen.

Full Screen Graph

Michell Instruments 25

OPERATION

3.6 Main Screen Sub Menus

The following sub menus can be accessed from the Main Screen:

• Warnings

• Logging

• Alarms

• Field Cal

• Settings

• Monitor

3.6.1 Warning Screen

This page is accessed through the 'Warnings' item on the Main Screen and is used enable or disable the internal alarms. When an individual alarm is disabled it will not trigger the internal alarm.

QMA601 User’s Manual

This screen is accessed by pressing the

Navigate between menu items with the

Press the

To return to the Configuration Screen press the

ENTER key to change the required option.

ENTER key from the Configuration Screen.

Up () and Down () keys.

ESC key.

Figure 17

Warning Screen

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The state of the internal alarm associated with each of the parameters above is indicated by the following icons:

Icon Description

Alarm disabled.

Alarm enabled. No fault.

Alarm enabled. Fault condition.

OPERATION

3.6.2 Logging Screen

This menu contains a record of the last 280 data points of the 'Log Parameter' value. It is accessed through the 'Logging' item on the Main screen.

Table 4 Warning Screen

Figure 18

Parameter Description

Log Parameter Log Page

Michell Instruments 27

Parameter to be recorded in the log file

Opens a keypad to select the page of logged data to view.

Table 5 Logging Screen

Logging Screen

OPERATION

3.6.3 Alarm Screen

This menu allows the internal alarm parameters to be set. It is accessed through the 'Alarms' item on the Main screen.

QMA601 User’s Manual

This screen is accessed by pressing the

Navigate between menu items with the

Select the alarm required with the

Press the activate a pop up keypad. For more information on the keypad see Section 3.2.5.

To return to the Configuration Screen press the

ENTER key to change the required option. Numerical parameter options

ENTER key from the Configuration Screen.

Up () and Down () keys.

ENTER key.

ESC key.

Parameter Description

Selects the required alarm.

Alarm Selector

Available Options: Alarm 1, Alarm 2, Alarm 3, Alarm 4 - Analyzer

Status Alarm only Clears a latched alarm.

Clear Latch

Available Options: Yes, Cleared

Enables and disables latching of the selected alarm. If latching is enabled the alarm will enter a 'tripped' state when the cause of the

Latch

Parameter

Low

High

alarm is corrected.

Available Options: YES, NO

Selects the parameter for the selected alarm.

Available Options: Flow ml/min, Cell Pr. barg, Ext. Pr. barg, H

H2O ppmW, H2O mg/m3, WVP Pa, lbs/MMscf, DP °C/°F, Oven °C/°F Selects the lower limit for the selected alarm.

Selects the uper limit for the selected alarm.

Figure 19

Table 6 Alarm Screen Parameters

Alarm Screen

O ppmV,

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3.6.4 Field Calibration Screen

This menu allows the field calibration parameters to be set and activated if necessary. It is accessed through the 'Field Cal' item on the Main screen.

Depending upon the field calibration settings some parameters may become inactive. In these cases the inactive parameters are automatically hidden

OPERATION

Figure 20

Calibration Screen

Michell Instruments 29

OPERATION

Parameter Description

Calibrate

Analog O/P

Hold

QMA601 User’s Manual

Starts a calibration procedure if a manual calibration has been selected.

Toggles data hold mode. This determines whether the last valid measurement is held while a calibration is carried out.

Available Options: On, Off

If data hold is selected, the user can select how many cycles, after the calibration, the last measured value is held for.

Toggles between an external calibration source or the internal calibration source. If an external calibration source is selected the external reference moisture must be entered in the ext ref setting.

Cal Source

Cal Method

Available Options: External, Internal

External Cal Source - when this is chosen Ext Ref will need to be

entered to show the ppmV value of the external moisture reference.

Internal Cal Source - when this is chosen then the Cal Method can be

set to Manual or Automatic. Toggles between manual calibration or automatic calibration mode.

Available Options: Automatic, Manual

Manual Cal Method - if this is chosen the Start button must be

pressed in order to initiate the calibration procedure. If this method is chosen then both the Interval and Hour selection boxes are hidden and a Start button is displayed.

Automatic Cal Method - if this is chosen then the following parameters

will need to be set and will be displayed on the screen. Calibration will begin on the time selected using the interval and hour settings.

Interval (Days)

Hour

Settling Cycles

Cal Cycles

Frequency of automatic calibrations in days.

The hour in the day at which an automatic calibration will start.

Period of time for the QMA401 to stabilize to the new moisture level (as presented by the internal moisture generator or external ppm value) before conducting the actual calibration cycles.

Sets how many calibration cycles are carried out.

Table 7 Calibration Screen Parameters

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If Analog O/P Hold is turned off then the ‘Hold Cycles’ selection box is hidden, as shown below:

OPERATION

Figure 21

Hold Cycles – If Analog O/P Hold is selected, the user can select for how many cycles after the calibration the last measured value is held for. This is done using the onscreen keypad which is opened.

If an external calibration source is selected the user must enter the external reference moisture in the Ext Ref (ppm) setting.

If an internal calibration source is selected then the ‘Ext Ref’ selection box is hidden (as shown above). If an external calibration is selected then the calibration mode is forced to manual i.e. an automatic calibration cannot be carried out if the external calibration source is active. The ‘Cal Method’ selection box is also hidden, as shown below:

Field Calibration Screen 2

Figure 22

If an automatic calibration is selected then calibration will begin on the time selected using the interval and hour settings. This is done using the onscreen keypad which is opened.

Field Calibration Screen 3

Michell Instruments 31

OPERATION

If a manual calibration is selected then both the ‘Interval’ and ‘Hour’ selection boxes are hidden, as shown above. If an automatic calibration is selected then the “Calibrate”, “Cal Source” and “Ext Ref” selection boxes are hidden, as shown below:

QMA601 User’s Manual

Figure 23

• Interval (Days) – This is where the user selects how often in days a calibration is performed.

• Hour of Day – This is where the user selects the hour within the day at which the calibration will occur.

• Cal Cycles – This is where the user selects how many calibration cycles are carried out.

• Settling Cycles – This is where the user selects how many settling cycles are added after the calibration.

If a field calibration has started all adjustable parameters are hidden. A control to stop the field calibration is added along with a countdown of the remaining settling cycles and calibration cycles:

Field Calibration Screen 4

Figure 24

Field Calibration Screen 5

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3.6.5 Monitor screen

This screen displays a number of live parameters. No parameter can be changed on this screen: it is for reference only.

This screen is accessed through the Monitor item on the main screen.

OPERATION

To return to the Main Screen press the

Figure 25

Parameter Description

Moisture Content (ppmV)

Beat Frequency(Hz)

Delta Frequency(Hz)

Enclosure Temperature

(0C)

Flow Rate (ml/min) Cell pressure (barg) Ext. pressure (barg)

Ref Solenoid

Sample Solenoid

Internal Cal Solenoid

Dryer vol. remaining %

MG remaining (days)

SCF

MGV

Live moisture reading in ppm Live beat frequency reading: the frequency difference

between the two crystals. Live delta frequency reading: the beat frequency difference

between the sample and reference phase.

Live QMA601 enclosure temperature.

Live flow rate reading.

Live internal pressure transducer reading.

Live external pressure reading.

Displays the reference solenoid state.

Displays the sample solenoid state.

Displays the internal calibration solenoid state.

Remaining dryer life in %.

Remaining moisture generator life in days.

Sensor correction factor set during a calibration cycle.

Moisture Generator value.

ESC key.

Monitor Screen

Table 8 Monitor Screen Parameters

Michell Instruments 33

OPERATION

3.7 Settings Menu

The settings menu is accessed through the Settings item on the main screen.

QMA601 User’s Manual

Allows access to the following sub menus to change instrument settings.

• Measurement

• Outputs

• HMI

• RTC

• SW Comms

• Cal History

• About

3.7.1 Measurement Screen

Figure 26

Settings Menu Screen

This screen is accessed by pressing the ENTER key from the Configuration Screen.

Navigate between menu items with the

Press the activate a pop up keypad and Carrier Gas parameter options activate a gas options screen. For more information on the keypad see Section 3.2.5.

To return to the Configuration Screen press the

ENTER key to change the required option. Numerical parameter options

Up () and Down () keys.

ESC key.

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OPERATION

Figure 27

Parameter Description

The settings menu is accessed through the Settings item on the main screen.

Available Options: Air, Ar, CH

Carrier Gas

CO, CO User 3

User Gas Entry: If a 'User' carrier gas is selected an additional option

to set this gas is added to the menu. See section 3.7.1.1 for more information.

Selects the dew-point calculation method.

DP Calculation

Available Options:

IGT (IGT Bulletin #8) ISO (ISO 18453), Ideal Gas,

Selects the pressure source.

Available Options:

Atmos – Atmospheric pressure. Fixed – User-settable fixed value.

Pressure Input

When the Fixed option is chosen it enables a fixed value to be entered (see screen shot below).

External – An externally connected pressure transducer.

When the External option is chosen it enables the choice of the zero and span range pressure transducer values of 4 or 20mA (see screen shot below).

Pressure Unit

for indication purposes only but can be changed in the "HMI Menu" (Section 3.7.3)

Measurement Screen

, C2H2, C2H4, C2H6, C3H6, C3H8, C4H10,

, H2, He, Kr, N2, Ne, NH3, NO, N2O, O2, Xe, User 1, User 2,

Table 9 Measurement Screen

Michell Instruments 35

OPERATION

3.7.1.1 Carrier Gas

Used to select a different carrier gas. When the Carrier Gas option is selected the page shown below is opened.

QMA601 User’s Manual

Figure 28

There are 20 different preset gases the user can choose from, along with 3 user definable presets:

• Air

• Argon

• Methane

• Acetylene

• Ethylene

• Ethane

• Propane

• Butane

• Propene

• Carbon Monoxide

Carrier Gas Screen

• Hydrogen

• Helium

• Neon

• Krypton

• Ammonia

• Nitric Oxide

• Nitrous Oxide

• Oxygen

• Xenon

• User 1

• Carbon Dioxide

• Nitrogen

After selecting the carrier gas the user is taken back to the previous page.

• User 2

• User 3

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NB. If User 1, 2 or 3 is selected as the carrier gas then a new parameter box will appear underneath the carrier gas toggle box called ‘User Gas’. This can be seen below.

OPERATION

When the User Gas option is selected from the carrier gas list, the user can enter the user gas settings, using the User Gas Setup page which is opened. See Appendix F for further information on calculating User Flow Correction Factors.

3.7.1.2 DP Calculation Method

Selects the calculation method used for dew point and lbs/MMscf. Options are:

• IGT - as per IGT Bulletin #8

• ISO - as per ISO18453

• Ideal Gas

3.7.1.3 Pressure Input

Selects the pressure source. Options are:

• Atmos.

• Fixed

Figure 29

Measurement Screen

• External

If the external option is selected the ‘Fixed’ selection box is hidden and replaced with the ‘Ext. 4mA’ and ‘Ext. 20mA’ selection boxes as shown below:

Michell Instruments 37

OPERATION

QMA601 User’s Manual

Figure 30

If the fixed option is selected the ‘Ext. 4mA’ and ‘Ext. 20mA’ selection boxes are hidden and replaced with the ‘Fixed’ selection box as shown below:

Figure 31

If the ‘Atmos.’ option is selected the ‘Fixed’, ‘Ext. 4mA’ and ‘Ext. 20mA’ selection boxes are all hidden as shown below:

External Options

Fixed Options

Figure 32

• Fixed – Allows the user to enter the fixed pressure using the onscreen keypad.

• Ext. 4mA – Allows the user to enter the pressure at 4mA using the onscreen keypad.

• Ext. 20mA – Allows the user to enter the pressure at 20mA using the onscreen keypad.

• Pressure Unit –This displays the current Pressure unit. Please note this cannot be changed on this page.

Atmos. Option

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OPERATION

• Gas – Allows the user to enter a unique name for the gas using the onscreen keypad.

• Molecular Weight – Allows the user to enter the molecular weight of the gas using the onscreen keypad.

• FCF – Allows the user to enter the Flow Correction Factor using the onscreen keypad. See Appendix B for instruction on how to calculate the FCF.

3.7.2 Outputs Screen

The Outputs Screen allows the two analog output channels to be set up. It is accessed through the 'Outputs' item in the 'Settings menu'.

This screen is accessed by pressing the

Navigate between menu items with the

Select output required with the

Figure 33

ENTER key.

User Gas Setup Screen

ENTER key from the Configuration Screen.

Up () and Down () keys.

Press the activate a pop up keypad. For more information on the keypad see Section 3.2.5.

To return to the Configuration Screen press the

ENTER key to change the required option. Numerical parameter options

ESC key.

Michell Instruments 39

OPERATION

QMA601 User’s Manual

Parameter Description

Output

Selector

Parameter

Selects the output channel to check and modify.

Available Options: Output 1, Output 2

Selects the parameter tracked by the output channel.

Available Options: H2O ppmv, H2O ppmw, mg/m3, WVP Pa, H2O lbs/

MMscf, DP, Oven, Flow, Cell Pr., Ext. Pr. Selects the signal type of the output.

Output Type

Available Options: 1-5 V, 4-20 mA

Low

High

Error

Indication

Sets the lower output limit for the selected parameter.

Sets the higher output limit for the selected parameter.

Selects the error indication level for the outputs.

Available options:

LOW (3.2 mA / 0.80 V) HIGH (21.4 mA / 5.35 V)

Figure 34

Outputs Screen

Table 10 Outputs Screen Parameters

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3.7.3 HMI Screen

The HMI Screen allows the setting of the display language, parameters and measurement units. It is accessed from either the HMI item on the Settings menu or directly during the QMA601 warm up procedure.

OPERATION

This screen is accessed by pressing the from the Oven heating Screen at start-up. If this screen is entered during start-up -

after any adjustments have been made press the Screen.

Navigate between menu items with the required with the

Press the activate a pop up keypad. For more information on the keypad see Section 3.2.5.

To return to the Configuration Screen press the ESC key.

ENTER key to change the required option. Numerical parameter options

ENTER key.

ENTER key from the Configuration Screen or

ESC key twice to return to the Main

Up () and Down () keys. Select output

Figure 35

HMI Screen

Michell Instruments 41

OPERATION

Parameter Description

Language

Chart Period

Sets the HMI language

Available Options: English, Japanese

Selects the time scale of the chart. Changing the chart period will remove all current data from the chart.

Available Options: 5 mins, 30 mins, 1 hr, 5 hrs, 10 hrs,

24 hrs Select the signal smoothing level.

Signal Smoothing

Available Options: Low, medium, high

Temperature Unit

Pressure Unit

Flow Unit

Parameter 1

Parameter 2

Selects the displayed temperature units.

Available Options: °C, °F

Selects the units in which the pressure measurements are displayed.

Available Options: barg, bara, psig, psia, MPag,

mmHg, MPa Abs Selects the flow units.

Available Options: ml/min, sccm/min

Selects the parameter to be displayed on the front page and logged on the front page chart.

Available Options: ppmv, ppmw, mg/m3, WVP Pa,

lbs/MMscf, Dew Point, Oven Temp., Flow Rate, Cell Pr., External Pr

Selects the secondary parameter to be displayed on the front page. Available Options: ppmv, ppmw, mg/m3, WVP Pa, lbs/ MMscf, Dew Point, Oven Temp., Flow Rate, Cell Pr., External Pr.

QMA601 User’s Manual

Table 11 HMI Setup Screen Parameters

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3.7.4 Real Time Clock Screen

The Real Time Clock screen is used to set the current date and time parameters for the instrument. It is accessed through the RTC item on the Settings menu.

OPERATION

This screen is accessed by pressing the

Navigate between menu items with the

Press the pop up keypad. For more information on the keypad see Section 3.2.5.

To return to the Configuration Screen press the

ENTER key to access the menu item. Numerical parameter options activate a

ENTER key from the Configuration Screen.

Up () and Down () keys.

ESC key.

Figure 36

Parameter Description

Day / Month / Year

Hour / Minute

Save Date

Save Time

Table 12 Real Time Clock Screen Parameters

Sets the current date for the real time clock.

Sets the current time for the real time clock.

Saves the updated date.

Saves the updated time.

Real Time Clock Screen

Michell Instruments 43

OPERATION

3.7.5 Software Communications Screen

The Software Communication screen is used to set the physical method the QMA601 uses to communicate with external software. It is accessed through the 'SW COMMS' item on the Settings menu.

QMA601 User’s Manual

Parameter Description

Instrument ID Instrument's Modbus address.

Protocol

Address

Table 13 Software Communications Screen Parameters

3.7.6 Ethernet Screen

The Ethernet screen is used to set the Ethernet network parameters. It is accessed from the address button on the Software Communications screen.

Figure 37

Sets the physical communication method.

Available Options: RS485 / USB / Ethernet. (Note - Ethernet

option only shows if this is installed.)

Opens the menu to set the Ethernet network parameters. This is only present if Protocol is set to Ethernet.

Software Communications Screen

Figure 38

Ethernet Screen

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Parameter Description

IP Address Subnet Mask Default Gateway Apply

Table 14 Ethernet Screen Parameters

3.7.7 Field Calibration History

The Calibration History page contains a summary of the previous five Sensor Correction Factors (SCF)s. The page also contains an option to re-load any of these SCFs.

OPERATION

Instrument's static IP address on the network.

Subnet mask of network that the instrument is on.

The default gateway of the network that the instrument is on.

Saves Ethernet settings.

Parameter Description

SCF Selector

Apply

3.7.8 About Screen

This screen displays the analyzer firmware versions, serial numbers and protected service pages. This screen is accessed from the settings menu.

To return to the Configuration Screen press the

Figure 39

Cycles through the results of each previous calibration cycle

Applies the SCF from the selected previous calibration cycle

Table 15 Calibration History Screen

Calibration History Screen

ESC key.

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OPERATION

QMA601 User’s Manual

The service pages are intended for Michell Instruments approved personnel only. They do not contain any user accessible functions.

3.8 Sampling Guidelines

The QMA601 is designed to operate in a flowing gas stream and is suitable for the measurement of the moisture content of a wide variety of gases. In general, if the gas (in conjunction with water vapor) is not corrosive to the sampling system and the sensor base metals then it will be suitable for measurement by the QMA601.

The analyzer is designed to automatically regulate the sample flow rate. However, the sample pressure and back pressure must match what is shown on the calibration certificate (typically 3 barg (43.5 psig) sample pressure, 2 barg (29 psig) back pressure), and should be controlled using a high-quality pressure regulator on the gas inlet and a back pressure regulator on the outlet.

Dried samples and wet samples are alternately passed through the sensor cell. The difference in the measured beat frequency produced by the wet and dry samples is proportional to the moisture content in ppmV of the gas being analyzed.

Figure 40

About Screen

General guidelines to be followed when setting-up a sampling system are as follows:

• Ensure that the sample is representative of the gas under test

To ensure that the sample is representative of the process being monitored, the sample point should be as close to the critical measurement point as possible. Also, never sample from the bottom of a pipe where entrained liquids may be drawn into the analyzer’s sample input line.

• Minimize the ‘dead space’ in sample lines

Dead space in sample lines causes moisture entrapment points, increased system response times or measurement errors as the trapped moisture is released into passing sample gas, producing an increase in partial vapor pressure.

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Avoid the use of too many T-pieces, in-line couplings or other unnecessary tubework. Sample tubework should, ideally, be specially designed for each application rather than adapted from that previously installed for another application. Dead space in sample lines increases response time by holding water molecules which are more slowly released to the passing gas sample.

• Remove any particulate matter or oil from the gas sample

Particulate matter can damage the sensors. If particulate matter, such as degraded desiccant, scale or rust, is likely to be present in the sample gas use a particulate inline filter. Michell Instruments’ technical sales department can be contacted for advice.

• Use high quality sample tube fittings

The sample tubework must be capable of withstanding the operating pressure of the sample line. Wherever possible, always use stainless steel tubework and fittings. This is particularly important at low dew points since other materials, e.g. nylon, have hygroscopic characteristics and adsorb moisture on the tube walls, giving rise to slower measurement response and, under certain circumstances, false readings.

OPERATION

In order to maximize response time, always use the shortest run of tubework and the smallest bore possible, taking care not to induce pressure differentials by aiming for too high a flow rate through too small a bore. Michell Instruments supplies a range of precision pressure fittings suitable for use with the QMA601. Contact Michell Instruments for details of the items available.

• Gas samples

Generally, if the sample gas (in conjunction with water vapor) is not corrosive to base metals, it will be suitable for measurement by the QMA601 analyzer. Gases containing entrained solids should be filtered before application to the analyzer.

Care should be taken with gas mixtures containing potentially condensable components in addition to water vapor, e.g. oil, to ensure that only water vapor is present in the sample. Once present on the surface of the sensors, oil will not dry out and will contaminate and damage them.

• Material of construction

All materials are permeable to water vapor, as the water molecule is extremely small compared to the structure of solids, even when compared to the crystalline structure of metals.

Many materials contain moisture as part of their structure, particularly organic materials, salts and anything which has small pores. It is important to ensure that the materials used are suitable for the application.

If the partial water vapor pressure exerted on the outside of a compressed air line is higher than on the inside, the atmospheric water vapor will naturally push through

Michell Instruments 47

OPERATION

the porous medium against a dry air water vapor pressure. Water will migrate into the pressurized air line, this effect is called transpiration.

Over a long tube run water will inevitably migrate into any line even through the most resistant materials. Moisture on the outlet of the line will be different than on the inlet. The best material to resist transpiration is 316L stainless steel.

It is also important to note that temperature changes can increase the tendency of these materials to affect the humidity of the surrounding air. With a given surface and gas composition, increases of line pressure and decreases in temperature increase surface adsorption.

• Internal material surface finish

Components with a smooth surface finish are always preferred. If a choice of surface finish is available for the materials dictated by the process or sample system, select the smoothest for fastest response.

QMA601 User’s Manual

• Tube diameter

The larger the sampling tube diameter, the more exposed the gas will be to the tube wall. Therefore it is recommended to use the smallest possible tube diameter to minimize the previously mentioned effects. This must be balanced with the desired response speed. Depending on the configuration 1/8” tube diameter is recommended. Please contact Michell Instruments if further recommendations are needed.

• Ambient temperature variation

Fluctuations in ambient temperature conditions can cause detectable changes in the sample gas' moisture content due to heating/cooling of the sample system. Small molecules such as water will migrate through the wall until the entire system reaches a new equilibrium. It is possible to minimize this effect on a sampling system by heat tracing sample lines and insulating/heating the sampling system enclosure to a stable temperature above the maximal ambient temperature.

It is important to control the temperature of all components of the sampling system, including regulators and sample lines. For this reason it is strongly advised to use heat traced lines to eliminate this temperature change effect and measure moisture content solely related to the gas under test.

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3.9 Measurement Cycle

At the beginning of a measurement cycle V1 is energized. This allows the dried sample gas to be routed to the sensor cell for or the reference phase duration as shown by the red line in frequency between the sensor and reference crystals is measured.

The sample and calibration gas paths are shown in green. These lines are continually purged during the reference phase of the measurement cycle.

Figure 41

HE1 HE2

. During this first phase of the measurement cycle the difference in

OPERATION

SAMPLE

DD MFC

V1 V2 V3

FC1

QCH

FC2 FC3

MFC

Key

Desiccant column

Mass flow controller

MG V1, V2, V3

Moisture generator

Solenoid Valves

SAMPLE

OUT

QCH PS

Sensor cell

Pressure sensor

Figure 41

HE1, HE2 FC1, FC2, FC3

Measurement Cycle (Reference phase) - Dried Sample Flow

Heat exchanger

Flow control

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OPERATION

After a 30 second sampling period, V1, V2, and V3, the reference phase is de-energized. This cuts off the dried gas supply to the sensor cell and V3 is energized connecting the sample gas (red line - see The reference and calibration gas paths are shown in green. These lines are continually purged during this second sample of the measurement cycle.

QMA601 User’s Manual

Figure 42)

HE1 HE2

V1 V2 V3

to the sensor cell for the sample phase duration.

SAMPLE

DD MFC

QCH PS

FC1 FC2 FC3

QCH

MFC

Key

Desiccant column

Mass flow controller

Sensor cell

Pressure sensor

MG V1, V2, V3

HE1, HE2 FC1, FC2, FC3

Moisture generator

Solenoid Valves

Heat exchanger

Flow control

SAMPLE

OUT

Figure 42

Measurement Cycle (Sample phase) Calibration Flow

During this sample phase of the measurement cycle the difference in frequency between the reference and sensor crystals is measured again. After signal processing the measured difference in frequency between the reference and sample phases is proportional to the moisture content of the sample gas.

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3.10 Calibration Cycle

To maintain the accuracy of the analyzer, the unit can self calibrate and adjust its internal reference based on the result.

This is achieved as follows:

An internal moisture generator uses a permeation tube to generate a nominal moisture content of 0.5, 5 or 50 ppmV, depending on what was specified at the time of order.

The calibration is carried out in a two phase cycle. This is shown by the red line in Figure

43. The calibration and sample gas paths (as shown by the green lines) are constantly kept purged.

OPERATION

SAMPLE

DD MFC

HE1 HE2

V1 V2 V3

FC1

QCH

FC2 FC3

MFC

Key

Desiccant column

Mass flow controller

MG V1, V2, V3

Moisture generator

Solenoid Valves

SAMPLE

OUT

QCH PS

Sensor cell

Pressure sensor

Figure 43

HE1, HE2 FC1, FC2, FC3

Calibration Cycle (Reference phase) - Dried Sample

Heat exchanger

Flow control

Flow

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OPERATION

At the close of this 30 second sampling period, V1 is de-energized, and V2 is energized so that the reference gas from the moisture generator is now routed to the sensor cell. This is the beginning of the calibration phase, see

The calibration reference gas is measured for a further 30 seconds, until V2 is deenergized and the reference phase begins again.

The reference and sample paths are continually purged during each phase (as shown by the green lines in Figure 44) during the calibration phase.

Figure 44.

SAMPLE

HE1 HE2

V1 V2 V3

QMA601 User’s Manual

DD MFC

QCH PS

FC1 FC2 FC3

QCH

MFC

Key

Desiccant column

Mass flow controller

Sensor cell

Pressure sensor

Figure 44

Calibration Phase - Sample Flow

MG V1, V2, V3

HE1, HE2 FC1, FC2, FC3

SAMPLE

OUT

Moisture generator

Solenoid Valves

Heat exchanger

Flow control

If an external calibration gas is used, the 'Cal Source' and 'Ext Ref' values should be entered onto the Field Calibration screen (Section 3.6.4). The field calibration then follows the same phases as used during a standard measurement cycle, as the internal moisture generator is no longer required.

The analyzer will run though a number of 'settling cycles' to ensure the internal sample system is fully equilibrated with the calibration gas before beginning to collect calibration data.

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After the system has carried out the selected number of settling cycles, it begins the calibration cycles. During these cycles, the difference between the calibration reference gas and the dried gas is measured. As the moisture content of the calibration gas is known, the difference between this and the measured value is equal to the error in the system.

The QMA601 stores this correction factor and automatically compensates subsequent sample readings for any offset that may have occurred to the factory calibration.

MAINTENANCE

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MAINTENANCE

4 MAINTENANCE

QMA601 User’s Manual

The power to the enclosure must be turned off before any

work is carried out in the measurement system enclosure.

Before commencement of the start-up procedure ensure

thatall power and signal connections to the QMA601 are

fully isolated and if necessary observe the stipulated de-

energization

period of 45 minutes.

Gas line connections to the measurement system must be

isolated and de-pressurized before any work commences.

Any loose or disturbed tubework or couplings must be leak

tested.

The design of the QMA601 and measurement system is such that no specific routine maintenance is required. However, if a fault does occur with the system that is not covered within this manual please contact Michell Instruments (see contact information at www.michell.com) or your local representative.

The QMA601 is a certificated product for use in Zone 1 Hazardous Areas. Any maintenance of this product should only be conducted by suitably trained personnel and in accordance with locally applying regulations. Any unauthorized maintenance of this product could invalidate the product warranty.

In addition to general maintenance procedures which involve the cleaning of the analyzer’s casing and display, there are a number of parts in the QMA601 which can be removed and replaced by the operator.

They are as follows:

• Power supply fuse (see Section 4.2)

• Optional contamination trap (see Section 4.3)

• Desiccant column (see Section 4.4)

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4.1 Safety

This equipment operates from power supply voltages that can

be lethal.

Ensure that any installation meets the standards described in

Section 2 of this handbook.

Under NO circumstances should the analyzer’s covers be

removed while the analyzer is in operation or the air vents

covered or in any way restricted.

Maintenance and repair must only be carried out by competent

personnel or alternatively, returned to the manufacturer for this

purpose.

4.2 Removal and Replacement of the Power Supply Fuse

MAINTENANCE

This product is provided with an internally mounted fuse located beneath the power connector.

The fuses are rated at:

Mains 240 V AC - 3 A 24 V DC - 5 A

NOTE: Only these types of fuses must be used.

Replacement fuses can be obtained by contacting Michell Instruments' technical support.

4.3 Replacing the Optional Contamination Trap

The contamination trap is part of the QMA601 additionally supplied sample system. Refer to the application specific sample system design requirements for the removal and fitting of this part.

F0131 Hazardous Area/Hazardous Location Product Servicing: Customer Report & Declaration is required before commencing any service work/exchange.

Michell Instruments 55

MAINTENANCE

If the contamination trap is to be returned to Michell Instruments, or a Michell Instruments' approved service center form, the F0121 Decontamination Certificate must be completed and sent with the returned trap.

QMA601 User’s Manual

4.4 Removal and Replacement of the Desiccant Column

Removal

1. Isolate the sample gas supply and de-pressurize the QMA601 sampling

system. NOTE: Goggles should be worn at all times when working

with pressure.

2. When the sample system has been depressurized, use the spanner/wrench sizes indicated below to disconnect the VCR fittings on the Desiccant Column.

15/16" wrench

1/1-16" wrench

3. Pull and twist the index plungers to the unlock position.

Index Plungers

3/4" wrench

5/8" wrench

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4. Lift out the Desiccant Column.

Replacement

1. Before fitting the new Desiccant Column, push the new snubber on to the top VCR fitting, and fit a new VCR face seal to the bottom VCR fitting.

NOTE: Be careful when removing the snubber, as the desiccant will pour out of the VCR fitting if the dryer is tipped up.

MAINTENANCE

Snubber

Face seal

2. Install the Desiccant Column into the system, with the snubber at the top, and the VCR face seal at the bottom, as shown above. Twist the index plungers to the lock position.

3. Check that the Desiccant Column is secure and locked into the brackets. Tighten the VCR fittings using the spanner/wrench sizes indicated on the previous page, being careful not to over-tighten the fittings.

Leak Check

1. After installation of the new Desiccant Column the system should be repressurized and leak checked.

2. Only the two connection points of the Desiccant Column should need leak checking. A foaming liquid leak detector such as Swagelok's Snoop should be used.

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CALIBRATION

5 CALIBRATION

5.1 Traceability

The original factory calibration of this analyzer is traceable to national standards.

The analyzer is calibrated at a fixed pressure over the sensing crystals, and the analyzer’s calibration is only valid while the inlet pressure and back pressures have been set correctly.

A calibration certificate bearing the calibration data points is issued with each analyzer. If required, an option is available to specify the number of required calibration points by contacting Michell Instruments. A list of worldwide Michell Instruments’ offices is provided at www.michell.com.

QMA601 User’s Manual

Figure 45

shows a typical calibration certificate.

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CALIBRATION

Figure 45

Michell Instruments 59

Typical QMA601 Calibration Certificate

SHIPPING

QMA601 User’s Manual

6 SHIPPING

6.1 Preparation for Shipping and Packing if Not Supplied as a Sample System

For shipping purposes, the analyzer should be packed into its original crate as this will provide the recommended degree of protection during transit.

To prepare the analyzer for shipping, proceed as follows:

1. Isolate the incoming sample line and depressurize the system. Remove the connections to the GAS IN and GAS OUT ports. Purge the gas lines with dry nitrogen to remove potentially corrosive gases.

2. Switch off the analyzer, isolate the power supply and remove the power supply cable.

3. Remove the analog connector and alarm output connectors.

4. Pack the analyzer in its original crate by first fitting the end packing, and lowering the analyzer into the crate. Place any accessories being returned in the accessories box and place in the crate last.

5. Create a packing list detailing all equipment contained in the crate, place it inside and seal the crate.

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7 APPLICATION SOFTWARE OVERVIEW

With the QMA Application Software you can:

• Read and edit all main analyzer parameters

• Chart and log all main analyzer parameters

• Perform a field calibration

• Reset the analyzer to factory defaults

Communication between the application software and analyzer is via Modbus RTU over RS485, USB, or Ethernet where available.

7.1 System Requirements

For the best software performance, the host computer should meet the following minimum requirements:

APPLICATION SOFTWARE

O/S Windows XP, Windows VISTA, Windows 7 (32-bit or 64-bit), Windows 8

(32-bit or 64-bit)

CPU Intel Pentium III 500 MHz (recommended: Pentium 4 1.6 GHz or Pentium

M 1.0 GHz, or Athlon 1.2 GHz or higher) RAM 512 MB (recommended: 1.0 GB) Disk space Application = 10 MB

7.2 System Connection

RS485 and USB communications should be connected to an available port on a local computer using the appropriate cable. For Ethernet communications connect an Ethernet cable to a network access point.

For information the default communication settings are:

Baud 9600 Parity NONE Data bits 8 Stop bits 1

Michell Instruments 61

APPLICATION SOFTWARE

7.3 Getting Started

On launching the software the connection console will appear, allowing you to establish communications between the software and QMA analyzer.

Choose the Modbus slave address (default is 1). Select the Connection Method for the analyzer and associated options. For more information see Section 7.3.1.

QMA601 User’s Manual

Click the 'Connect...' button.

After a few seconds the software will report a successful connection or not. If the connection is successful, the word 'Connected' and a green tick will appear.

Click the 'Continue' button to continue onto the main acquisition window.

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7.3.1 Connection Method (Serial Connection (RS485 or TCP)

Select the connection method for the analyzer.

7.3.1.1 RS485 Connection

An RS485 to RS232 converter must be used when connecting to a computer's built in serial port, or when connecting to an RS232 to USB adaptor.

To find the COM port number assigned to a USB to RS232 adapter, open Windows 'device manager' and expand the 'Ports (COM & LPT)' branch.

The USB to RS232 adapter should be listed in this branch, together with its COM port number.

APPLICATION SOFTWARE

7.3.1.2 Modbus TCP Connection (Ethernet)

Enter the IP address and port number of the analyzer. The instrument IP and port should be first configured in the Ethernet menu. See section 3.7.6 for further information.

Michell Instruments 63

APPLICATION SOFTWARE

7.4 Main Window

The application software will automatically begin acquiring, displaying and charting data from the analyzer once a connection has been established.

Data acquisition occurs approximately every 2 seconds. The chart update rate is 2 seconds but this may be changed by using the chart options window.

Data logging does not start automatically, this is indicated by the text 'NOT LOGGING' on the Main Screen. Click the 'Data Logging' button to launch the data logging setup window (See section 7.6).

QMA601 User’s Manual

To configure analyzer parameters, click the 'Parameters / Field calibration' button to launch the parameters window (See section 7.7).

Click the 'Connect' button to re-connect with the analyzer or connect with a new analyzer.

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7.5 Using the Chart

Chart mode buttons

The chart defaults to plot mode.

To change the chart mode, click one of the buttons along the top of the chart, described below.

Function Description

PLOT SCROLL-X SCROLL-Y SIZE-X SIZE-Y ZOOM BOX

OPTIONS

Puts chart into live plot mode

Allows the user to scroll the X-axis left and right

Allows the user to scroll the Y-axis up and down

Allows the user to re-scale the X-axis

Allows the user to re-scale the Y-axis

Allows the user to draw a box in the data area which will zoom in on the data within the box. The box is drawn from top-left to bottom-right

Opens the chart options window

APPLICATION SOFTWARE

Table 16 Using the Chart

After using the scroll. size or zoom modes, changing the chart back to plot mode resets the x and y axes This functionality depends on the 'Restore on Plot Mode' option being selected in section 7.5.1.

Michell Instruments 65

APPLICATION SOFTWARE

7.5.1 Chart Options Window

The Chart Options Window allows the user to configure the following chart properties:

Function Description

Show/hide series

Update rate Allows the user to change the update rate of the chart Reset chart Clears all chart data

Restore on plot mode

Y-axis scale

Table 17 Chart Options

QMA601 User’s Manual

Allows the user to show or hide data series from the chart. Tick to show, untick to hide

When ticked, selecting plot mode will restore the X and Y axis to the state before they were modified (after sizing, zooming or scrolling)

Select either 'autoscale all data' or 'manual scaling' of the Y-axis. Selecting manual scaling will show a min and max input text box

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7.6 Data Logging

Click the 'Data Logging' button on the Main Window to launch the Data Logging Setup Window.

APPLICATION SOFTWARE

Choosing a log file filename

Choose a log file manually by clicking the

Click the 'Auto generate' button to generate a filename based on the current date and time.

An auto generated log file filename has the following format:

QMA dd-mm-yy hh:mm:ss.log

where dd = date, mm = month, yy = year, hh = hour (24 hr), mm = minutes and ss = seconds

Example:

QMA 15-12-14 13.41.55.log

which is 15th December 2014 at 1.41.55 pm

Auto generated log files are stored in the local My Documents folder.

button.

7.6.1 Configuring Logging Start Time

Logging may be started immediately or at a user-defined time in the future.

To start logging immediately, select the 'Start when

To start logging at a user-defined time in the future, select the 'Start at this date/time:' option and enter the date and time when you wish to start logging.

START is clicked' option.

Michell Instruments 67

APPLICATION SOFTWARE

7.6.2 Configuring Logging Stop Time

If the 'Stop when STOP is clicked' option is selected, then the software will continue logging indefinitely until either the 'STOP' button is clicked or the software is shut down.

If the 'Stop at this date/time:' option is selected then the software will continue logging until the selected date and time is reached or when the 'STOP' button is clicked or the software is shut down.

7.6.3 Starting the Log

After choosing a filename and configuring the logging start and stop times, click the 'START' button.

7.6.4 Viewing a Log

Click the 'view log file' button to view a log file within Windows notepad.

7.7 Parameters / Field Calibration

Analyzer parameters may be viewed and edited via this window. All of these options mirror the options available on the QMA601 HMI and to refer to the relevant pages for more information.

QMA601 User’s Manual

Current (live) values are shown in the 'Value now' column. New values may be entered in the 'Adjust' column. When a value is modified it will be shown in red and the 'Apply' button will enable.

Click the 'Apply' button to apply the modified values to the analyzer.

To write the PC date and time to the analyzer, first click the 'Get PC date/time' button to load the values into their respective positions on the screen, then click the 'Apply' button.

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7.7.1 Field Calibration

This window allows manual analyzer calibrations to be performed, and settings for automatic calibrations configured. These options mirror the options in section 3.6.4.

APPLICATION SOFTWARE

Michell Instruments 69

APPENDIX A

QMA601 User’s Manual

Appendix A

Technical Speciﬁ cations

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APPENDIX A

Appendix A Technical Speciﬁ cation

Performance

Measurement technology Fast Response Quartz Crystal Microbalance Calibrated range* 0.1 to 700 ppm Measurement range 0.1 to 2000 ppm

Accuracy

Repeatability

Limit of Detection 0.1 ppm

Available Units

Response Speed

±10% of reading from 1 to 2000 ppm ±0.1 ppmV between 0.1 & 1 ppm

±5% of the reading from 1 to 2000 ppm ±0.1 ppmV between 0.1 & 1 ppm

ppm

, ppmW, mg/Nm3, vapor pressure (Pa), dew point (°C/°F), lbs/

MMscf T63 <2 mins to step change in either direction

T95 <5 mins to step change in either direction Automatic calibration Internal moisture generator source calibrated traceable to NPL & NIST Sensitivity

0.01ppmV or 1% of reading, whichever is greater

Electrical Specifications

Supply Voltage

Alarms

Analog signals

Digital communications

Data logging

Local Interface 7” color LCD with intuitive HMI Electrical Connections M20 entries for cable glands

85 to 264 V AC, 47/63Hz or 24 V DC (ATEX / IECEx)

24 V DC only (cCSAus)

1 x System Alarm, volt-free change-over (FORM C)

3 x process alarms, selectable for various parameters, volt free

change-over (FORM C)

2 X 4-20mA or 1-5 V (selectable)

Maximum load resistance 500 Ω for 4-20mA and minimum load of 1M

Ω for 1-5 V

RS485 Modbus RTU

Modbus TCP

Available on analyzer (Limited number of values) or via Application

Software

Operating Conditions

Inlet Pressure 3 barg (43.5 psig) Outlet Pressure 2 barg (29 psig) Sample Flow 300ml/min total flow Sample Gas Temperature 0 to +100°C (+32 to + 232°F) Operating Environment

Analyzer only

Analyzer in sampling

System

+5 to +45°C (+41 to +113°F) up to 90%RH

-20 to +55°C (-4 to +131°F) up to 95%RH, (fitted with heater/

thermostat and/or enclosure cooling as appropriate to maintain +5 to

+45°C internal temperature)

Michell Instruments 71

APPENDIX A

Mechanical Specifications

Type GUB Flameproof Exd Enclosure

Lid & Body

Glass Window

Analyzer Gas Connections 1/8” NPT Weight 35kg (77lbs) without sampling system Sample System Enclosure 316L stainless steel

Hazardous Area Specifications

Hazardous Area Certification

Cast copper-free aluminum LM25 (EN AC-42000), less than 0.6

magnesium

Heat resistant, explosion proof, polyester coated, IP66, NEMA 4

ATEX

IECEx

CSAc

CSAus

TC-TR

II 2 GD Ex d IIB+H2 T6 Gb, Ex tb IIIC T85°C Db, Tamb -40°C to +60°C Ex d IIB+H2 T6 Gb, Ex tb IIIC T85°C Db, Tamb -40°C to +60°C Class I, ZONES, Ex d IIB+H2 T6 Gb, Tamb -20°C to +55°C Class I, Div 1, Group BCD T6, Tamb -25°C to +55°C 1Ex d IIB+H2 T4 Gb X, 1Ex tb IIIC 130°C Db X 1Ex d IIB+H2 T3 Gb X, 1Ex tb IIIC 195°C Db X

QMA601 User’s Manual

*Applies only to standard 30-30 second cycle variant. Contact Michell Instruments for further details.

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APPENDIX B

Appendix B

Hazardous Area

Certiﬁ cation

Michell Instruments 73

APPENDIX B

Appendix B Hazardous Area Certiﬁ cation

The QMA601 is certified compliant to the ATEX Directive (2014/34/EU) and IECEx for use within Zone 1 and Zone 2 / Class I, Division 1 Hazardous Areas, and has been assessed so by TRaC Compliance (Notified Body 0891).

B.1 Product Standards

This product conforms to the Standards:

EN60079-0:2012/A11:2013 IEC60079-0:2011 EN60079-1:2007 IEC60079-1:2007 EN60079-31:2014 IEC60079-31:2008 UL1203:2006 CSA C22.2 No.0 UL916 CSA C22.2 No.30

B.2 Product Certiﬁ cation

QMA601 User’s Manual

This product is attributed with the product certification codes:

ATEX & IECEx II 2 GD Ex d IIB+H2 T6 Gb Ex tb IIIC 85°C Db (-40 to +60°C)

CSAus Class I, Division 1, Groups B, C, & D, T6 (-25 to +55°C) CSAc Class I, Zones, Ex d IIB+H2 T6 Gb Tamb (-20 to 55°C)

B.3 Global Certiﬁ cates/Approvals

ATEX TRAC14ATEX0042X IECEx IECEx TRC14.0016X cCSAus 70011747

These certificates can be viewed or downloaded from our website at: http://www.michell.com

B.4 Special Conditions of Use

1. Clean only with a damp or anti-static cloth.

2. External cables shall be suitable for use at temperatures of 86°C.

3. Maximum combined process flow into enclosure must not exceed 5.0 l/min.

4. Only suitably certified cable glands, blanking elements and thread adapters must be used.

5. The enclosure must be earthed externally using the earth point provided.

6. Do not open when energized or when an explosive atmosphere may be present.

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QMA601 User’s Manual

7. The flameproof joints of the flame arrestor and breather are not intended to be repaired.

B.5 Maintenance and Installation

The QMA601 must only be installed by suitably qualified personnel and in accordance with the instructions provided and the terms of the applicable product Certificates.

Maintenance and servicing of the product must only be carried out by suitably trained personnel or returned to an approved Michell Instruments' Service Center.

Flame paths are not intended to be repaired.

APPENDIX B

Michell Instruments 75

APPENDIX C

QMA601 User’s Manual

Appendix C

Modbus Register Map

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APPENDIX C

Appendix C Modbus Holding Register Map

All the data values relating to the QMA601 are stored in holding registers. Each of these registers is two bytes (16-bits wide). Some of these registers contain instrument specific values e.g. its own unique system address, IP address values, etc. Others registers hold specific real time data such as temperature.

Each Modbus message has a two part address code, one for the low byte (bits 0 through 7) and one for the high byte (bits 8 through 15). The facility exists for multiple registers, specified by a high and low byte contained in the query message, to be addressed and read by the same message.

The table below describes the instruments' registers with their respective address locations, together with their relevant register configurations and register map definitions.

The register maps below the table define the data allocated to each bit/byte for each register type.

Address#Function Description Read/

Write

0 ModBus Configuration R/W C

1 System Configuration R/W D

2 Alarm Configuration R/W E

3 Analogue Output Configuration R/W F

4 Internal Logging Configuration R/W U

6 PID – Proportional Value R/W A3 0.01-100.00%

7 PID – Integral Value R/W A3 0.01-1000.0%

8 PID – Derivative Value R/W A3 0.01-100.00%

11 Signal Filter Settings R/W W

12 Alarm1 – Low Set point R/W See App A

13 Alarm1 – High Set point R/W See App A

14 Alarm2 – Low Set point R/W See App A

15 Alarm2 – High Set point R/W See App A

16 Alarm3 – Low Set point R/W See App A

17 Alarm3 – High Set point R/W See App A

18 Analogue Out 1 – Low Set point R/W See App A

19 Analogue Out 1 – High Set point R/W See App A

20 Analogue Out 2 – Low Set point R/W See App A

21 Analogue Out 2 – High Set point R/W See App A

22 Fixed Pressure Input Value R/W See App A

23 Next Calibration – Configuration R/W P1

24 User low ppmV limit R/W A3 0.00 to 0.10

25 Next Calibration – Intervals between cal R/W P2

28 Last Cal Day/Month/Year R J

29 Last Cal Details R/W K

30 Last Cal - 1 Day/Month/Year R J

MFC Span in mlm / Gas Number for flow

rate and mol weight correction

Warning Relay Alarm warning selection

mask

Dryer Capacity (ppm) / Moist Gen Capacity

(days)

Next Calibration – External Cal Val – Hi

Word

Next Calibration – External Cal Val – Lo

Word

R/W S

R/W M

R/W 255 / 103 V

R/W I 0.01 to 2000.00 ppmv

R/W I 0.01 to 2000 .00ppmv

Default Register

Config

Notes/ Real Value Range

SCF can be set (for

factory calibration)

Michell Instruments 77

APPENDIX C

31 Last Cal - 1 Details R K

32 Last Cal – 2 Day/Month/Year R J

33 Last Cal – 2 Details R K

34 Last Cal – 3 Day/Month/Year R J

35 Last Cal – 3 Details R K

36 Last Cal – 4 Day/Month/Year R J

37 Last Cal – 4 Details R K

38 User Gas Flow Correction Val1 R/W A4 0.100 to 10.000

39 User Gas Flow Correction Val2 R/W A4 0.100 to 10.000

40 User Gas Flow Correction Val3 R/W A4 0.100 to 10.000

41 User Gas Mol Weight Val1 R/W A3 0.100 to 500.00

42 User Gas Mol Weight Val2 R/W A3 0.100 to 500.00

43 User Gas Mol Weight Val3 R/W A3 0.100 to 500.00

44 Ext (line) Pressure Sensor Min R/W See App A

45 Ext (line) Pressure Sensor Max R/W See App A

46 Solenoid Hold Power in % R/W A1

47 *Oven Temperature - Cal ADC Val R/W A1 0 to 4095

48 *Internal Pressure – ADC Val 4mA R/W A1 1 to 4095

49 *Internal Pressure – ADC Val 20mA R/W A1 1 to 4095

50 *Analogue Output 1 - DAC 4mA Value R/W A1 0-65535

51 *Analogue Output 1 - DAC 20mA Value R/W A1 0-65535

52 *Analogue Output 2 - DAC 4mA Value R/W A1 0-65535

53 *Analogue Output 2 - DAC 20mA Value R/W A1 0-65535

54 *External Pressure – ADC Val 4mA R/W A1 0 to 4095

55 *External Pressure – ADC Val 20mA R/W A1 0 to 4095

56 *RTC Cal Value – PPM error R/W A1 0-121

57 *Analyzer Serial Number HI WORD R/W

58 *Analyzer Serial Number LO WORD R/W

60 *Osc FW Version Hi Word R I

61 *Osc FW Version Lo Word R I

62 *Osc Table1 DeltaF 01 Hi Word R/W I 0.0001 to 2000.0000

63 *Osc Table1 DeltaF 01 Lo Word R/W I “

64 *Osc Table1 DeltaF 02 Hi Word R/W I 0.0001 to 2000.0000

65 *Osc Table1 DeltaF 02 Lo Word R/W I “

66 *Osc Table1 DeltaF 03 Hi Word R/W I 0.0001 to 2000.0000

67 *Osc Table1 DeltaF 03 Lo Word R/W I “

68 *Osc Table1 DeltaF 04 Hi Word R/W I 0.0001 to 2000.0000

69 *Osc Table1 DeltaF 04 Lo Word R/W I “

70 *Osc Table1 DeltaF 05 Hi Word R/W I 0.0001 to 2000.0000

71 *Osc Table1 DeltaF 05 Lo Word R/W I “

72 *Osc Table1 DeltaF 06 Hi Word R/W I 0.0001 to 2000.0000

73 *Osc Table1 DeltaF 06 Lo Word R/W I “

74 *Osc Table1 DeltaF 07 Hi Word R/W I 0.0001 to 2000.0000

75 *Osc Table1 DeltaF 07 Lo Word R/W I “

76 *Osc Table1 DeltaF 08 Hi Word R/W I 0.0001 to 2000.0000

77 *Osc Table1 DeltaF 08 Lo Word R/W I “

78 *Osc Table1 DeltaF 09 Hi Word R/W I 0.0001 to 2000.0000

79 *Osc Table1 DeltaF 09 Lo Word R/W I “

QMA601 User’s Manual

32 bit Integer HI

Word

32 bit Integer LO

Word

1 to 4294967296

“

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80 *Osc Table1 DeltaF 10 Hi Word R/W I 0.0001 to 2000.0000

81 *Osc Table1 DeltaF 10 Lo Word R/W I “

82 *Osc Table1 DeltaF 11 Hi Word R/W I 0.0001 to 2000.0000

83 *Osc Table1 DeltaF 11 Lo Word R/W I “

84 *Osc Table1 DeltaF 12 Hi Word R/W I 0.0001 to 2000.0000

85 *Osc Table1 DeltaF 12 Lo Word R/W I “

86 *Osc Table1 Ref 01 Hi Word R/W I 0.0001 to 10000.0000

87 *Osc Table1 Ref 01 Lo Word R/W I “

88 *Osc Table1 Ref 02 Hi Word R/W I 0.0001 to 10000.0000

89 *Osc Table1 Ref 02 Lo Word R/W I “

90 *Osc Table1 Ref 03 Hi Word R/W I 0.0001 to 10000.0000

91 *Osc Table1 Ref 03 Lo Word R/W I “

92 *Osc Table1 Ref 04 Hi Word R/W I 0.0001 to 10000.0000

93 *Osc Table1 Ref 04 Lo Word R/W I “

94 *Osc Table1 Ref 05 Hi Word R/W I 0.0001 to 10000.0000

95 *Osc Table1 Ref 05 Lo Word R/W I “

96 *Osc Table1 Ref 06 Hi Word R/W I 0.0001 to 10000.0000

97 *Osc Table1 Ref 06 Lo Word R/W I “

98 *Osc Table1 Ref 07 Hi Word R/W I 0.0001 to 10000.0000

99 *Osc Table1 Ref 07 Lo Word R/W I “

100 *Osc Table1 Ref 08 Hi Word R/W I 0.0001 to 10000.0000

101 *Osc Table1 Ref 08 Lo Word R/W I “

102 *Osc Table1 Ref 09 Hi Word R/W I 0.0001 to 10000.0000

103 *Osc Table1 Ref 09 Lo Word R/W I “

104 *Osc Table1 Ref 10 Hi Word R/W I 0.0001 to 10000.0000

105 *Osc Table1 Ref 10 Lo Word R/W I “

106 *Osc Table1 Ref 11 Hi Word R/W I 0.0001 to 10000.0000

107 *Osc Table1 Ref 11 Lo Word R/W I “

108 *Osc Table1 Ref 12 Hi Word R/W I 0.0001 to 10000.0000

109 *Osc Table1 Ref 12 Lo Word R/W I “

110 *BLANK3 R/W Don’t Care

111 *Osc Table1 Cal Flow Rate ml/m R/W A2 10-2000 ml/m

112 *Osc Table1 Cal Int Moist Gen Val Hi Word R/W I 0.0001 to 10000.0000

113 *Osc Table1 Cal Int Moist Gen Val Lo Word R/W I “

114

115 *Osc Table1 Cal Date MONTH / YEAR R/W Q 1 to 12 / 0 to 99

116 *Osc Table1 Cal Sample Phase Time R/W A1 10 to 65535 seconds

117 *Osc Table1 Cal Reference Phase Time R/W A1 10 to 65535 seconds

118 *Osc Table1 Cal Settling Cycles R/W A1 4 to 240 cycles

119 *Osc Table1 Cal Calibration Cycles R/W A1 4 to 60 cycles

120 *BLANK R/W Don’t Care

121 *Osc Table1 Cal Cell Pressure Reading R/W A3 0.00 to 10.00 barG

122 *Osc Table1 Cal Beat Freq of Ref R/W A1

123 *Osc Table1 Cal Beat Freq of Moist Gen R/W A1

124 *Osc Table2 DeltaF 01 Hi Word R/W I 0.0001 to 2000.0000

125 *Osc Table2 DeltaF 01 Lo Word R/W I “

126 *Osc Table2 DeltaF 02 Hi Word R/W I 0.0001 to 2000.0000

127 *Osc Table2 DeltaF 02 Lo Word R/W I “

128 *Osc Table2 DeltaF 03 Hi Word R/W I 0.0001 to 2000.0000

*Osc Table1 Cal Oven SP degC/ Cal Date

DAY

R/W Q 40 to 80 / 1 to 31

APPENDIX C

1000 to 15000 (NOT

USED)

1000 to 15000 (NOT

USED)

Michell Instruments 79

APPENDIX C

129 *Osc Table2 DeltaF 03 Lo Word R/W I “

130 *Osc Table2 DeltaF 04 Hi Word R/W I 0.0001 to 2000.0000

131 *Osc Table2 DeltaF 04 Lo Word R/W I “

132 *Osc Table2 DeltaF 05 Hi Word R/W I 0.0001 to 2000.0000

133 *Osc Table2 DeltaF 05 Lo Word R/W I “

134 *Osc Table2 DeltaF 06 Hi Word R/W I 0.0001 to 2000.0000

135 *Osc Table2 DeltaF 06 Lo Word R/W I “

136 *Osc Table2 DeltaF 07 Hi Word R/W I 0.0001 to 2000.0000

137 *Osc Table2 DeltaF 07 Lo Word R/W I “

138 *Osc Table2 DeltaF 08 Hi Word R/W I 0.0001 to 2000.0000

139 *Osc Table2 DeltaF 08 Lo Word R/W I “

140 *Osc Table2 DeltaF 09 Hi Word R/W I 0.0001 to 2000.0000

141 *Osc Table2 DeltaF 09 Lo Word R/W I “

142 *Osc Table2 DeltaF 10 Hi Word R/W I 0.0001 to 2000.0000

143 *Osc Table2 DeltaF 10 Lo Word R/W I “

144 *Osc Table2 DeltaF 11 Hi Word R/W I 0.0001 to 2000.0000

145 *Osc Table2 DeltaF 11 Lo Word R/W I “

146 *Osc Table2 DeltaF 12 Hi Word R/W I 0.0001 to 2000.0000

147 *Osc Table2 DeltaF 12 Lo Word R/W I “

148 *Osc Table2 Ref 01 Hi Word R/W I 0.0001 to 10000.0000

149 *Osc Table2 Ref 01 Lo Word R/W I “

150 *Osc Table2 Ref 02 Hi Word R/W I 0.0001 to 10000.0000

151 *Osc Table2 Ref 02 Lo Word R/W I “

152 *Osc Table2 Ref 03 Hi Word R/W I 0.0001 to 10000.0000

153 *Osc Table2 Ref 03 Lo Word R/W I “

154 *Osc Table2 Ref 04 Hi Word R/W I 0.0001 to 10000.0000

155 *Osc Table2 Ref 04 Lo Word R/W I “

156 *Osc Table2 Ref 05 Hi Word R/W I 0.0001 to 10000.0000

157 *Osc Table2 Ref 05 Lo Word R/W I “

158 *Osc Table2 Ref 06 Hi Word R/W I 0.0001 to 10000.0000

159 *Osc Table2 Ref 06 Lo Word R/W I “

160 *Osc Table2 Ref 07 Hi Word R/W I 0.0001 to 10000.0000

160 *Osc Table2 Ref 07 Lo Word R/W I “

162 *Osc Table2 Ref 08 Hi Word R/W I 0.0001 to 10000.0000

163 *Osc Table2 Ref 08 Lo Word R/W I “

164 *Osc Table2 Ref 09 Hi Word R/W I 0.0001 to 10000.0000

165 *Osc Table2 Ref 09 Lo Word R/W I “

166 *Osc Table2 Ref 10 Hi Word R/W I 0.0001 to 10000.0000

167 *Osc Table2 Ref 10 Lo Word R/W I “

168 *Osc Table2 Ref 11 Hi Word R/W I 0.0001 to 10000.0000

169 *Osc Table2 Ref 11 Lo Word R/W I “

170 *Osc Table2 Ref 12 Hi Word R/W I 0.0001 to 10000.0000

171 *Osc Table2 Ref 12 Lo Word R/W I “

172 *BLANK R/W Dont Care

173 *Osc Table2 Cal Flow Rate ml/m R/W A2 10-2000 ml/m

174 *Osc Table2 Cal Int Moist Gen Val Hi Word R/W I 0.0001 to 10000.0000

175 *Osc Table2 Cal Int Moist Gen Val Lo Word R/W I “

176

177 *Osc Table2 Cal Date MMYY R/W Q 1 to 12 / 0 to 99

178 *Osc Table2 Cal Sample Phase Time R/W A1 10 to 240 seconds

*Osc Table2 Cal Oven SP degC / Cal Date

R/W Q 40 to 80 / 1 to 31

QMA601 User’s Manual

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179 *Osc Table2 Cal Reference Phase Time R/W A1 10 to 240 seconds

180 *Osc Table2 Cal Settling Cycles R/W A1 4 to 240 cycles

181 *Osc Table2 Cal Calibration Cycles R/W A1 4 to 60 cycles

182 *BLANK R/W Dont Care

183 *Osc Table2 Cal Cell Pressure Reading LoW R/W A3 0.00 to 10.00 barG

184 *Osc Table2 Cal Beat Freq of Ref R/W A2

185 *Osc Table2 Cal Beat Freq of Moist Gen R/W A2

186 *Oven Serial Number HI WORD R/W

187 *Oven Serial Number LO WORD R/W

188 *BLANK R/W Dont Care

189 *BLANK R/W Dont Care

190

191

192

193

194 User manual entry SCF value W A4

195 Passcode for protected registers W A1

196 RTC Set Hours/Mins W H Write to set Time

197 RTC Set Day/Month/Year W J Write to set Date

198 Instrument Command Register W T

199

200 Control Board f/w version R A3

201 Moisture – PPMv – Hi Word R I

202 Moisture – PPMv – Lo Word R I

203 Moisture – PPMw – Hi Word R I

204 Moisture – PPMw – Lo Word R I

205 Moisture – mg/m3 – Hi Word R I

206 Moisture – mg/m3 – Lo Word R I

207 Moisture – Pa – Hi Word R I

208 Moisture – Pa – Lo Word R I

209 Moisture – lb/mmscf – Hi Word R I

210 Moisture – lb/mmscf – Lo Word R I

211 Dew point Hi Word in set unit R I

212 Dew point Lo Word in set unit R I

213 Enclosure Temperature in set unit R B2

214 Ext Pressure Reading in set unit R See App A

215 DeltaF Hi Word R I

216 DeltaF Lo Word R I

217 Beat Frequency Hi Word R I

218 Beat Frequency Lo Word R I

219 Oven Temperature in set unit R B3

220 Flow Rate in ml/m R A2

221 Heater Power in % R A2

222 RTC Hours/Minutes R H

223 RTC Seconds R A1

224 RTC Day/Month/Year R J

32 bit Integer HI

Word

32 bit Integer LO

Word

APPENDIX C

1000 to 15000 (NOT

USED)

1000 to 15000 (NOT

USED)

1 to 4294967296

Write to set SCF value

to use (0.2500 to

4.000)

(NOT USED

CURRENTLY)

“

Michell Instruments 81

APPENDIX C

225 Ref Seconds Countdown R A1

226 Pressure Reading of cell in set unit R See App A

227 Sample Seconds Countdown R A1

228 Cal Settling / Calibration Cycles Countdown R Q

229 System Status Register R L

230 Warning Flags Register R M

231 Current Flow Correction value R A4

232 Moist Gen Value Read After Cal – Hi Word R I For cal use

233 Moist Gen Value Read After Cal – Lo Word R I For cal use

234 Countdown to Next Cal HHDD R P2

235 Countdown to Next Cal MMSS R Q

236 10 Sample Averaged DeltaF Hi Word R I

237 10 Sampled Averaged DeltaF Lo Word R I “

238 10 Sample Averaged Ppmv Hi Word R I

239 10 Sampled Averaged Ppmv Lo Word R I “

240 Oven Temperature Live Averaged ADC Val R A1

241 Internal Pressure Live Averaged ADC Val R A1

242 External Pressure Live Averaged ADC Val R A1

243

244

245

246

247

248

249

250

251

252 DeltaF Log t0 Hi Word R I For cal use

253 DeltaF Log t0 Lo Word R I For cal use

254 DeltaF Log t1 Hi Word R I For cal use

255 DeltaF Log t1 Lo Word R I For cal use

256 DeltaF Log t2 Hi Word R I For cal use

257 DeltaF Log t2 Lo Word R I For cal use

258 DeltaF Log t3 Hi Word R I For cal use

259 DeltaF Log t3 Lo Word R I For cal use

260 DeltaF Log t4 Hi Word R I For cal use

261 DeltaF Log t4 Lo Word R I For cal use

262 DeltaF Log t5 Hi Word R I For cal use

263 DeltaF Log t5 Lo Word R I For cal use

264 DeltaF Log t6 Hi Word R I For cal use

265 DeltaF Log t6 Lo Word R I For cal use

266 DeltaF Log t7 Hi Word R I For cal use

267 DeltaF Log t7 Lo Word R I For cal use

268 DeltaF Log t8 Hi Word R I For cal use

Dryer Capacity Used / Moist Gen Capacity

Used

Ethernet Settings – IP Address – Upper

Bytes

Ethernet Settings – IP Address – Lower

Bytes

Ethernet Settings – Def Gateway – Upper

Bytes

Ethernet Settings – Def Gateway – Lower

Bytes

Ethernet Settings – Subnet Mask – Upper

Bytes

Ethernet Settings – Subnet Mask – Lower

Bytes

R/W Q

R/W Q “

QMA601 User’s Manual

Average of 10 deltaF

Logs - For cal use

Average of 10 ppmv

Logs - For cal use

Volatile – Cannot write

via Modbus, only via

display

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269 DeltaF Log t8 Lo Word R I For cal use

270 DeltaF Log t9 Hi Word R I For cal use

271 DeltaF Log t9 Lo Word R I For cal use

272 Ppmv Log t0 Hi Word R I For cal use

273 Ppmv Log t0 Lo Word R I For cal use

274 Ppmv Log t1 Hi Word R I For cal use

275 Ppmv Log t1 Lo Word R I For cal use

276 Ppmv Log t2 Hi Word R I For cal use

277 Ppmv Log t2 Lo Word R I For cal use

278 Ppmv Log t3 Hi Word R I For cal use

279 Ppmv Log t3 Lo Word R I For cal use

280 Ppmv Log t4 Hi Word R I For cal use

281 Ppmv Log t4 Lo Word R I For cal use

282 Ppmv Log t5 Hi Word R I For cal use

283 Ppmv Log t5 Lo Word R I For cal use

284 Ppmv Log t6 Hi Word R I For cal use

285 Ppmv Log t6 Lo Word R I For cal use

286 Ppmv Log t7 Hi Word R I For cal use

287 Ppmv Log t7 Lo Word R I For cal use

288 Ppmv Log t8 Hi Word R I For cal use

289 Ppmv Log t8 Lo Word R I For cal use

290 Ppmv Log t9 Hi Word R I For cal use

291 Ppmv Log t9 Lo Word R I For cal use

292

293

294 Log Buffer Latest Log Pointer R A1

295 Log Buffer Main Val Min – Hi_Word R I

296 Log Buffer Main Val Min – Lo_Word R I

297 Log Buffer Main Val Max – Hi_Word R I

298 Log Buffer Main Val Max – Lo_Word R I

299 Log1 - Hours/Minutes R H

300 Log1 - Day/Month/Seconds R J

301 Log1 - Main Value - Hi_Word R I

302 Log1 - Main Value - Lo_Word R I

303 Log1 - System Status Register R L

304 Log1 - Warning Flags Register R M

305 Log2 - Hours/Minutes R H

306 Log2 - Day/Month/Seconds R J

307 Log2 - Main Value - Hi_Word R I

308 Log2 - Main Value - Lo_Word R I

309 Log2 - System Status Register R L

310 Log2 - Warning Flags Register R M

>>> >>> To log288 R As above

APPENDIX C

Points to start of latest

log

* Factory Calibration Data

Table 18 Modbus Register Map

Michell Instruments 83

APPENDIX C

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

A1 — Unsigned Short. Range = 0 to 65535 A2 — Unsigned Short/10. Range = 0 to 6553.5 A3 — Unsigned Short/100. Range = 0 to 655.35 A4 — Unsigned Short/1000. Range = 0 to 65.535 A5 — Unsigned Short/1000. Range = 0 to 65.535

Conversion: Float*x = unsigned integer

Unsigned integer/x = ﬂ oat Or cast: Float value to read = ((ﬂ oat)(value))/x;

Unsigned short value to write = (unsigned short)(value*x)

QMA601 User’s Manual

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

B1 — Signed Short. Range -32768 to +32767 B2 — Signed Short/10. Range -3276.8 to +3276.7 B3 — Signed Short/100. Range -327.68 to +327.67 B4 — Signed Short/1000. Range -32.768 to +32.767 B5 — Signed Short/10000. Range -3.2768 to +3.2767

Most languages will cast from one type to another

Values to write into register manually:

If value is a negative number: (value*x)+65536 If value is 0 or a positive number: value*x E.g. for type B3:

(-5.39*100)+65536 = 64997 (2.01*100) = 201

Or cast: (Unsigned short)(value*x)

Reading Values from register manually:

If value in register is greater than 32767: (value-65536)/x If vaue in register is less than or equal to 32767: value/x E.g. for type B3:

(64997-65536)/100 = -5.39 201/100 = 2.01

Or cast: ((ﬂ oat)((signed short)value))/x;

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15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

PT PT IA IA IA IA IA IA IA IA

Instrument Address (IA) Protocol Type (PT)

1 to 31 (1=def) 00=RS485

01=USB VCP 10= Ethernet

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

DC DC CP CP CP CP PS PS PU PU PU TU TU NE

Temperature/Dew Point units (TU) Pressure for Dew-Point Calculations (PS)

00 = C (def) 01 = F

00= Atmospheric (def) 01 = Fixed pressure (User input value) 10 = External Line pressure (Ext sensor)

APPENDIX C

Pressure Units (PU) Number of cal points to use (CP)

000 = Bar.G (def) 001 = Bar.A 010 = Psi.G 011 = Psi.A 100 = MPa.G 101 = mmHg 110 = MPa.A

Dew-Point Calculation method to use (DC) NAMUR Error level preference

00=IGT 01=ISO 10=Ideal Gas (def)

Note: when a pressure unit or temperature unit is changed then the user

must manually change the values for the following to the value in the new selected unit (if relevant).

Minimum 3 and maximum is 12. Any other value is also 12.

0 = low error (3.0mA) 1 = high error (22.0mA)

• Fixed pressure for dew-point calculation

• External line pressure sensor min and max

• Alarm set-points

• Analog output ranges (low and high)

Michell Instruments 85

APPENDIX C

Register Configuration E — Alarm Configuration Note: Alarm 4 is a system fault/warning alarm and is configured in register 9

(Configuration M)

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 L4 L3 L2 L1 A3 A3 A3 A3 A2 A2 A2 A2 A1 A1 A1 A1

Alarm1 Parameter (A1) Alarm2 Parameter (A2)

0000 = Moisture – PPMv (def) 0001= Moisture - PPMw 0010 = Moisture – MGM3 0011 = Moisture – PA (wvp) 0100 = Moisture - LBMMSCF 0101 = Dew point 0110 = Oven temperature 0111 = Flow rate 1000 = Cell Pressure 1001 = Ext Line Pressure

Alarm3 Parameter (A3) Alarm Latch Control (L1 to L4)

0000 = Moisture – PPMv 0001= Moisture - PPMw 0010 = Moisture – MGM3 0011 = Moisture – PA (wvp) 0100 = Moisture - LBMMSCF 0101 = Dew point 0110 = Oven temperature 0111 = Flow rate (def) 1000 = Cell Pressure 1001 = Ext Line Pressure

0000 = Moisture – PPMv 0001= Moisture - PPMw 0010 = Moisture – MGM3 0011 = Moisture – PA (wvp) 0100 = Moisture - LBMMSCF 0101 = Dew point 0110 = Oven temperature (def) 0111 = Flow rate 1000 = Cell Pressure 1001 = Ext Line Pressure

L1 = 1 = Alarm1 latch L2 = 1 = Alarm2 latch L3 = 1 = Alarm3 latch L4 = 1 = Alarm4 latch L1 = 0 = Alarm1 don’t latch L2 = 0 = Alarm2 don’t latch L3 = 0 = Alarm3 don’t latch L4 = 0 = Alarm4 don’t latch

QMA601 User’s Manual

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

T2 T1 O2 O2 O2 O2 O1 O1 O1 O1

Ouput1 Parameter (O1) Output2 Parameter (O2)

0000 = Moisture – PPMv (def) 0001 = Moisture - PPMw 0010 = Moisture – MGM3 0011 = Moisture – PA 0100 = Moisture - LBMMSCF 0101 = Dew point 0110 = Oven temperature 0111 = Flow rate 1000 = Cell Pressure 1001 = Ext Line Pressure

Output Type – (T1 to T2)

0 = 4–20 mA 1 = 1–5V

0000 = Moisture – PPMv 0001= Moisture - PPMw 0010 = Moisture – MGM3 0011 = Moisture – PA 0100 = Moisture - LBMMSCF 0101 = Dew point (def) 0110 = Oven temperature 0111 = Flow rate 1000 = Cell Pressure 1001 = Ext Line Pressure

(Where T1 is CH1 and T2 is CH2)

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15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

HH HH HH HH HH HH HH HH MM MM MM MM MM MM MM MM

Hours Number (HH) Minutes Number (MM)

00 to 23 00 to 59

IEEE-754 single precision floating point format. This format is 'Big Ended' which means that the high byte is at a lower address in memory than the Lo byte, and is represented as such in the register memory map. The IEEE-754 format is shown below.

Bit 31 Bits 30 to 23 Bits 22 to 0

Sign bit 0 = + 1 = -

Exponent Field Has a +127 bias value

mantissa Decimal representation of binary. Where 1.0 <= value < 2.0

APPENDIX C

Examples of floating point to HEX are shown below:

1. +10.3

sign bit = 0 Exponent = 3, therefore exponent field = 127 + 3 = 130 , and bits 30 to 23 = 1000 0010 The mantissa = 1.2875 which in binary representation = 1010 0100 1100 1100 1100 1101

Adjusting the mantissa for the exponent moves the decimal point to the right if positive and to the left if negative.

As the exponent is = 3 then the mantissa becomes = 1010 0100 1100 1100 1100 1101, therefore:

1010 = (1x23) + (0x22) + (1x21) + (0x20) = 10 and 0100 1100 1100 1100 1101 = (0x2-1) +(1x2-2) + -- + (1x2-20) = 0.3

Therefore the word value = 0100 0001 0010 0100 1100 1100 1100 1101 = 4124CCCD

Consequently hi word= 4124 and lo word = CCCD

2. - 0.0000045

sign bit = 1 Exponent = -18, therefore exponent field = 127 + (-18) = 109 , and bits 30 to 23 = 0110 1101 The mantissa = 1.179648 which in binary representation = 1001 0110 1111 1110 1011 0101

i.e. (1x2-18) + (1x2-21) + (1x2-23) etc. = 0.0000045

Therefore the word value = 1011 0110 1001 0110 1111 1110 1011 0101 = B696FEB5

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APPENDIX C

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

DD DD DD DD DD MM MM MM MM YY YY YY YY YY YY YY

Date Number (DD) Month Number (MM)

1 to 31 1 to 12

Year Number (YY) or Seconds

00-99 for year or 00-59 for seconds

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

MA IE UE CF CF CF CF CF CF CF CF CF CF CF CF

QMA601 User’s Manual

Correction Factor (CF) Manual or Auto (MA)

1 to 4000 /1000.0 = 0.2500 to 4.000 0=Manual

1=Automatic

Internal or External (IE) User Entry (UE)

0=Internal 1=External

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 A4 A4 A3 A3 A2 A2 A1 A1 SS PS DH SM SM CP CP

Cycle Phase (CP) System Mode (SM)

00= Reference phase 01= Sample Phase 10 = Cal Phase (internal or external)

Relay Alarm Status ﬂ ags (A1, A2, A3, A4) Setup Status (SS)

Example: A1 = 00=OK (relay de-energised) A1 = 01=High (or Fault)(relay energised) A1 = 10=Low (relay energised) A1 = 11= Latched (relay latched but condition now ok)

Purge Status (PS) Current Data Hold Status

0=Not purging 1=Purging (System in Setup mode and only REF solenoid is energised)

1= CF manually written by user 0 = CF generated via calibration

00= Standby 01= Measurement 10 = Calibration

0 = Setup mode is OFF 1 = Setup mode is ON

0 = Data is currently not held 1 = Data is currently held

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APPENDIX C

1=Warning or fault, 0=OK

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Bit HEX Warning Condition

Oven temperature unstable. Oven temperature has not been

0 0001

stable within ±0.01C of setpoint for continuous 5 minutes. (Process alarms de-energized, both analog outputs at fault condition

1 0002

2 0004

Enclosure temperature too high. Enclosure (System) temperature

too high. (> Oven temperature setpoint -2°C)

Flow control error. MFC Flow control error (by >5ml/m of ﬂ ow

target)

3 0008 Cell pressure sensor error. (under 4 mA, over 20 mA or no signal) 4 0010 Ext Press sensor error. (under 4 mA, over 20 mA or no signal)

Field cal error. Internal moist generator drift, instrument excessive

5 0020

drift or desiccant dryer deterioration requiring very large corr. factor (<0.2500 or >4.000). In this case the correction factor would be set to 1.0. (Checked after ﬁ eld calibration)

6 0040

7 0080 ppmV over range. ppm

Beat freq. out of range. Beat frequency Under/Over acceptable

range (<1500 Hz, >20000 Hz)

over instrument range (>2000ppmV)

Oven temperature sensor fault. Oven temperature sensor fault

8 0100

(Process Alarms de-energized, Fault Alarm Active, both Analog outputs at fault condition (ADC <10, >4000 counts)

9 0200 mA output 1 error. (o/c or high resistance at output)

10 0400 mA output 2 error. (o/c or high resistance at output)

11 0800

12 1000

13 2000

14 4000

15 8000

Oscillator board comms error. Oscillator board comms. error or

board not present (checked on startup)

Ethernet board comms. error. Ethernet Board comms. error or

board not ﬁ tted (checked on startup)

Dryer due for service. Desiccant Dryer due for service or

replacement (>5000000ppm

)

Moisture generator due for service. Internal Moisture Generator

due for service or replacement (>1030days) Calibration Alarm

In calibration mode or data held (or both)

Analyzer Status Alarm selection mask (in Register 9) allows user to set which condition(s) trigger status relay alarm 4.

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APPENDIX C

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

MA IE DH MG AC AC AC AC AC AC AC AC

Manual or Auto (MA) Internal or External (IE)

0 = Manual 1 = Auto

Data Hold (DH) Data Hold Additional Cycles (AC)

0 = off 1 = on

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

IH IH IH IH IH ID ID ID ID ID ID ID ID ID ID

0 = Internal 1 = External

0 to 240 cycles

QMA601 User’s Manual

Hour of Day (IH) Interval Days (ID)

0 to 23 1 day to 365 days

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

MS MS MS MS MS MS MS MS MS MS MS GN GN GN GN GN

MFC Span in ml/m (MS) Gas Number (GN)

0 to 2000 ml/m 0 to 23 Gases (see Appendix D.1 for details).

Writing relevant number to this register initiates associated setting, calibration or test function

* Means only for Michell Factory use ** Put is setup mode first and then after test put back into measurement mode

2 = Set Cell Pressure 4 mA ADC Value*

3 = Set Cell Pressure 20 mA ADC Value*

4 = Set Ext Pressure 4 mA ADC Value*

5 = Set Ext Pressure 20 mA ADC Value*

6 = Send Test String to Sensor Comms Channel*

7 = Send Test String to Display Comms Channel*

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Specifications and Main Features

Frequently Asked Questions

User Manual