Dresser IMCW2 User manual

Dresser™ Measurement
Micro Corrector Model IMCW2
User Terminal Software (MCUT) Manual
© 2022 Natural Gas Solutions North America, LLC –All Rights Reserved.

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Contents
1Information .............................................................................................................................. 5
2General Overview..................................................................................................................... 6
3Safety....................................................................................................................................... 7
4Installation and Getting Started ................................................................................................ 8
4.1 System Requirements........................................................................................................................... 8
4.2 Required Equipment............................................................................................................................. 8
4.3 Installation............................................................................................................................................ 9
4.4 Operating MCUT................................................................................................................................. 11
4.5 Starting MCUT..................................................................................................................................... 12
5Welcome Tab.......................................................................................................................... 13
6Configuration Tab................................................................................................................... 15
6.1 Connect to the Micro Corrector ......................................................................................................... 16
6.2 UT Comms Settings............................................................................................................................. 18
6.3 Volume Configuration......................................................................................................................... 23
6.3.1 Meter Data ....................................................................................................................................25
6.3.2 Volumes..................................................................................................................................................... 30
6.3.3 Flow Sense.....................................................................................................................................31
6.3.4 Pulse Outputs ............................................................................................................................................ 34
6.3.5 Pulse Output Allocation ..................................................................................................................37
6.3.6 Display...........................................................................................................................................38
6.3.7 Fault Pulse Output Configuration.....................................................................................................45
6.4 Corrections Configuration................................................................................................................... 46
6.4.1 Temperature Measurement...................................................................................................................... 48
6.4.2 Pressure Measurement ............................................................................................................................. 50
6.4.3 Supercompressibility ......................................................................................................................53
6.5 Differential Pressure Monitoring........................................................................................................ 61
6.6Set Date & Time.................................................................................................................................. 62
6.7Customize LCD .................................................................................................................................... 64
6.8MC Comms Settings............................................................................................................................ 67
6.9Upload to MC...................................................................................................................................... 67
6.9.1 Protection of Metrological Parameters ............................................................................................69
6.9.2 Password Protection ......................................................................................................................69
6.9.3 Hardware Protection .....................................................................................................................71
6.9.4 Hardware and Software Protection..................................................................................................73
6.9.5 Reverification Process ....................................................................................................................77
6.10 Battery Type........................................................................................................................................ 79
6.11Save Configuration File....................................................................................................................... 80
6.12 Open Configuration File...................................................................................................................... 81
6.13 Report ................................................................................................................................................. 82
6.13.1 Report Viewer .............................................................................................................................85
7Calibration Tab ....................................................................................................................... 86
7.1 Temperature Single Point Calibration ................................................................................................ 88
7.2 Temperature Zero and Span Calibration ............................................................................................ 89
7.3 Pressure Single Point Calibration........................................................................................................ 91
7.4 Pressure Zero and Span Calibration.................................................................................................... 92

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7.5 Monitor Pressure Calibration ............................................................................................................. 93
8Live Data Tab.......................................................................................................................... 94
9Faults & Alarms Tab................................................................................................................ 96
9.1 Faults Functionality............................................................................................................................. 96
9.2 Clear Occurred Faults.......................................................................................................................... 98
9.3 Clear Uncorrected Volume Under Fault ........................................................................................... 100
9.4 Fault Dialout Settings........................................................................................................................ 101
9.5 Configuration of Alarm Functionality ............................................................................................... 102
9.6 Alarm Settings................................................................................................................................... 102
9.7 Alarm Dialout Settings and Monitor Calls......................................................................................... 105
9.8Clear Occurred Alarms...................................................................................................................... 105
10 Advanced Tab....................................................................................................................... 108
10.1 Digital Input/Output ......................................................................................................................... 109
10.1.1 External Power...........................................................................................................................109
10.1.2 Digital Input ...............................................................................................................................110
10.1.3 Consumption Alarm Output.........................................................................................................111
10.1.4 Meter Lockup Output .................................................................................................................113
10.2Trim Table......................................................................................................................................... 114
10.3Prover Mode..................................................................................................................................... 117
10.4 Test Pulse Outputs............................................................................................................................ 120
10.5Change Basic or Advanced Password ............................................................................................... 121
10.6Gas Meter Health Diagnostics .......................................................................................................... 122
10.6.1 DP Transducer Units ...................................................................................................................123
10.6.2 Gas Meter Health Diagnostic Setup..............................................................................................124
10.6.3 IMCW2 with Line-Pressure transducer .........................................................................................125
10.6.4 IMCW2 with Temperature-only (no Line-Pressure transducer).......................................................127
11 Logging Tab .......................................................................................................................... 129
11.1 Download Data Log........................................................................................................................... 140
11.1.1 Download Log1, Log2 and Log3....................................................................................................131
11.1.2 Options......................................................................................................................................132
11.1.3 Downloaded Volume Units..........................................................................................................132
11.2 Download Audit Log.......................................................................................................................... 130
11.3 Download DP Log.............................................................................................................................. 133
11.4Logging Setup.................................................................................................................................... 133
11.4.1 Logged Parameters.....................................................................................................................131
11.4.2 Log1, Log2 and Log3 ...................................................................................................................131
12 Monitor Pressure.................................................................................................................. 142
13 System Tab........................................................................................................................... 143
13.1 Internal Hardware section................................................................................................................ 144
13.2 Temperature..................................................................................................................................... 145
13.3 Digital Ports....................................................................................................................................... 146
13.4 Digital Sensors CRC........................................................................................................................... 147
13.5 Pressure and Temperature Transducer replacement functionality ................................................. 148
13.5.1 Introduction...............................................................................................................................148
13.5.2 Replacing digital transducer –Alarms...........................................................................................148
13.5.3 Replacing digital transducer –Logging..........................................................................................151
13.5.4 Commissioning a new digital transducer.......................................................................................151
13.5.5 Commissioning a new digital transducer –Logging........................................................................154

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13.5.6 Corrector functionality if new digital transducer is NOT commissioned...........................................158
14 Battery Replacement ............................................................................................................ 161
14.1 Installed battery pack Information................................................................................................... 162
14.2 IMCW2 is configured with Alkaline Battery Pack ............................................................................. 163
14.3 IMCW2 is configured with Lithium Battery Pack.............................................................................. 164
15 Meter Health Diagnostics...................................................................................................... 167
15.1 DP Daily Logging................................................................................................................................ 168
15.2 Gas meter Health Diagnostics........................................................................................................... 171
15.2.1 Introduction...............................................................................................................................171
15.2.2 Selection of DP base line for gas meter diagnostics .......................................................................171
15.2.3 Fixed Line Pressure for T-Only IMCW2..........................................................................................173
15.3 Gas meter Health Diagnostics - Indicators ....................................................................................... 174
15.3.1 Meter DP Alarm..........................................................................................................................174
15.3.2 Meter DP Fault ...........................................................................................................................175
15.3.3 Meter Lock-Up ...........................................................................................................................176
Appendix A –LCD Displayed Messages ....................................................................................... 177

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1Information
This manual details the installation and operation of all varieties of the Dresser™Micro Corrector, Model IMCW2. The
Micro Series Corrector and Micro Series Corrector User Terminal are manufactured by Natural Gas Solutions North
America, LLC (Dresser)
All printed material contained within this manual is for information only and is subject to change without notice. This
manual should be read in conjunction with firmware version 1.83 and higher and up to Micro Corrector User Terminal
software version 6.0.0.0. or higher.
This manual uses the words corrector, corrected and uncorrected throughout. The words corrector, corrected and
uncorrected should be read as meaning converter, converted and unconverted as defined by the most recent
standards on volume conversion.
In addition, the term telemetry output pulse should be read as meaning pulse output.
In the case of the IMCW2 T-Only and when a fixed line pressure is applied, the corrected and uncorrected volumes
should be read as meaning compensated and uncompensated.
For the purpose of this document the terms PC and laptop should be considered as being interchangeable.

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2General Overview
The Dresser™Micro Corrector, Model IMCW2 is designed to measure live pressure and temperature, and to utilize gas
composition to calculate corrected volume.
The IMCW2 is designed to install directly on to all Dresser rotary meters as well as rotary meters of other manufacturers
(contact your Dresser Representative for further details). Volume is sensed from the rotation of the impellers via a
magnetic pickup, therefore the input signal to the electronic counter and volume corrector is of high resolution. This
translates into an extremely high level of accuracy of volume measurement and correction. Furthermore, the lack of a
mechanical counter increases the rangeability of the gas meter by reducing the flow required to start the meter
rotating.
Model
Live Temperature
Live Pressure
Differential Pressure
IMCW2 T-Only
Yes
IMCW2 PTZ
Yes
Yes
Pressure Only
Yes
T-dp
Yes
Yes
Ptz-dp
Yes
Yes
Yes

Note: A temperature only version of the IMCW2, the IMCW2 T-Only is available. The IMCW2 T-Only
measures live temperature and calculates supercompressibility. The operator is required to configure a
fixed line pressure value. All functionality, with exception of the live pressure measurement is identical
to that of the IMCW2-PTZ, and this manual is applicable to both.
A monitor pressure version is also available. An external pressure transducer mounted on a length of armoured cable
allows for additional upstream pressure monitoring. Configurable monitoring features are available for this Micro
Corrector version.
A differential pressure version is also available, the IMCW2-dp. A differential pressure (DP) transducer module is
mounted onto the back of the Micro Corrector unit. This module houses a DP transducer with inlet and outlet
connections. Meter diagnostic capabilities are available for this Micro Corrector version.
The Micro Series Corrector User Terminal Software (MCUT) enables the operator to configure, calibrate, download
data, and audit logs and monitor alarms. The operator can specify which parameters are logged in the data log as well
as the logging interval. The audit log provides a tracking facility detailing any parameter changes; only the parameter
changes that will affect the billing are included within the audit log. To ensure the integrity of the billing period, the
audit log cannot be deleted.

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3Safety
The serial port may only be connected to an intrinsically safe modem as shown by the safety system approval drawing
(062308-000 in the Dresser IMCW2 Hardware Manual). For commissioning and reading data the serial port may also
be connected to a laptop computer under the following conditions:
1. Laptop computers, generally, are not intrinsically safe. Therefore, before using an uncertified laptop in the
hazardous area, a gas test should be performed to prove that no potentially hazardous gas mixture exists in the
area. If this is not possible the laptop must not be used in the hazardous area.
2. The laptop computer must be powered by batteries alone and these must be incapable of supplying more than 25
Volts. No connection is to be made to an external supply (e.g., charger) even if non-operational. (The presence of
the connection can itself create a hazardous condition).1
WARNING
All IMCW2 installations must meet Intrinsic Safety requirements.
Ensure that the installation is carried out in an appropriate manner in accordance with any National Codes of
Practice dealing with Intrinsically Safe (I.S.) installations
Connection to intrinsically safe equipment must be properly assessed by the user; the manufacturer (Dresser) will
not take responsibility for the overall safety of the system.
See drawing 062308-000 in the Dresser IMCW2 Hardware Manual

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4Installation and Getting Started
4.1 System Requirements
The MCUT is designed to run on Microsoft Windows® based PCs.
4.2 Required Equipment
The following equipment is needed to connect your computer to the Micro Corrector.
•Dresser Micro Corrector User Terminal Software files
•Dresser™Serial Communications Cable
•USB to Serial Port converter (if your laptop is not equipped with a serial port)
Item
Part
Purpose
1
Serial Communications cable
Connect from your computer’s serial port to the Micro Corrector Serial
port
2
USB to Serial Port converter
(Example shown below)
Converts the above serial cable to a USB-A connector
Communication Cable and Serial Converter

Note: The appearance of the items may differ from the ones shown here.
❶
❷

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4.3 Installation
The MCUT software is supplied by your Dresser Representative either as a downloadable link or through physical
media.
Insert/download the MCUT software installation onto your PC or laptop. If the auto run facility is enabled on the PC,
the set-up program will start automatically.
If the installation program does not start automatically then double-click SETUP.EXE from the contents list.
Follow in installation prompts to complete the software installation.

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4.4 Operating the MCUT
Communications to the IMCW2 can be carried out either directly or remotely. An intrinsically safe barrier must be
installed between a PC in a non-hazardous area and the IMCW2 in the hazardous area. The procedures contained in
this manual are identical regardless of whether communications to the IMCW2 are carried out directly or remotely via
the modem, however the operator will be prompted to enter some additional details if remote communications are
to be established.

Note: For details on setting-up and communicating via a modem contact your Dresser representative.
All the procedures outlined below are described using the direct method of communication and therefore assume that
the Dresser supplied communications cable is connected between the PC and IMCW2.

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4.5 Starting MCUT (Micro Corrector User Terminal)
To start the MCUT:

Note: Completion of the installation process will have placed an icon onto your Windows® desktop.
1. Locate and double-click the icon created on the desktop. Alternatively select the MC UT icon from the Micro
Series User Terminal folder in the Start, Programs menu.
2. A window will pop-up showing the Welcome tab

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5Welcome Tab
The software version and release date of the user terminal is displayed on the Welcome tab.
Welcome Screen

Note: The Software Revision is required if customer support is requested.

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The View Release Notes button will bring up a window which states a summary of changes in the current revision.
To connect to the IMCW2 it is necessary to select the Configuration tab to display the Configuration Screen.

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6Configuration Tab
To display the configuration tab:
•In the MCUT select the Configuration tab. The Configuration screen will be displayed.
•The options available on this screen depend on the model and configuration of the IMCW2.
•Upon initial call up of this screen (which must be done every time the MCUT is run) it is necessary to establish
communication with the IMCW2 so that the current settings stored within the IMCW2 are displayed in the
MCUT.
The Configuration tab is divided into 3 main sections; the left-hand parameter summary/selection list, 9 options which
allow the operator to connect and configure the IMCW2, and the report generation section.

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6.1 Connect to the Micro Corrector
For direct communications connect the 9 way “D” type connector of the communications cable to COM port 1 on the
PC; connect the round connector to the serial port connector located in the right-hand corner on the bottom of the
IMCW2. If COM port 1 is not available, it is possible to specify which COM port is to be used within the MCUT for direct
communication (COM 1 to COM 255). A fixed baud rate may be selected for modem communications.
To connect to the IMCW2 directly select the Connect with MC option (if no com port is otherwise specified COM1 will
be used by default).

Note: For details on setting-up and communicating via a modem contact your Dresser representative.

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Once the download is complete a dialog will be displayed stating that Configuration Downloaded OK, select OK.
A status bar will display the connection progress.
The “Connect with MC” button will change to “Cancel Connection” during the connection time and you can abort the
operation by pressing this button.

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If you receive a communication error, you are able to select another communication port…
6.2 UT Comms Settings
Communications to the IMCW2 may be conducted directly or remotely, via modem.

Note: For details on setting-up and communicating via a modem contact your Dresser representative.
1. Select the UT Comms Settings option. The UT Comms Settings dialog will be displayed.
If there are no valid modem connections, then the following window will be displayed.

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The operator can specify which communications port is to be used for direct communications (COM1 to COM255), and
the modem configuration for remote communications.Additionally, the user may select a fixed baud rate for direct
communications.

Note: For details on setting-up and communicating via a modem contact your Dresser representative.
UT communication settings Screen
To specify the communications port for in the MCUT:
•On the Configuration screen select the UT Comms Settings option and the UT Comms Settings screen will be
displayed.
•From the Direct section, select the Com Port drop down selection box.
•Select the appropriate com port.
•Select OK on the UT Comms Settings screen.

Note: If the PC is not equipped with a serial communication port, then a USB to serial port adaptor can
be used. Follow the following procedure to find out Com Port assignment.
•Open Control Panel
•Select System
•Select Hardware
•Select Device Manager
•Check Ports (COM & LPT) to find out Com Port assignation for USB serial port adaptor.

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To specify the communications port for use in the MCUT:
2. In the Direct section select the Com Port drop down selection box.
Select the appropriate COM port (that which the communications cable is connected to), default is COM 1.
UT communication settings Screen
3. Select OK in the UT Comms Settings dialog.

Note: If the PC is not equipped with a serial communication port, then a USB to serial port adaptor
can be used