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Summary of Contents for Ntron Microx Online
- Page 1 Microx Online Oxygen Analyser With Electrochemical Sensor User Instruction Manual Issue Number: 1.14 Issue Date: 17-07-2018 Rev 1.0...
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Page 2: Table Of Contents
Introduction ........................1 Microx Online Analyser ................... 1 Operation ........................2 1.2.1 %Vol Sensor ......................3 Specification ........................4 Physical data ........................5 Mounting and Dimensions ..................5 3.1.1 Field Connections ....................6 3.1.4 Mounting Locations and Installation ..............9 RS232 connections .................... -
Page 3: Introduction
NTRODUCTION Microx Online Analyser The Microx Online is a wall or surface mounting instrument is for the measurement of % Oxygen volume levels taken from a process line. Typically the sample source would indicate the Oxygen level in the related process and the Microx Online would be configured to initiate an Alarm condition if the Oxygen content measured is too high. -
Page 4: Operation
Operation When power is applied to the Microx Online Analyser, an initialisation procedure is performed as follows: • All the display segments are displayed • The software version number is displayed • The company name is displayed • The sensor type is displayed •... -
Page 5: Vol Sensor
%Vol Sensor A % Volume Electrochemical sensor is an integral part of the Microx Online. The % Volume measurement range of the Microx Online is factory set at 0 to 25%, with calibration at 20.9% O2. This model uses Electrochemical technology Sensor which should give accurate trouble free service during its lifetime. -
Page 6: Specification
PECIFICATION Supply Input Voltage 2310VAC/24 VDC. Options: 140 mA at 24VDC nominal all relays energised, Supply current: 20 mA drawn on current loop. Outputs Analogue Output: 4-20mA analogue output (10-bit resolution) Sensor Input No of Channels: Sensor %Vol oxygen 0-25% Electrochemical OC-32 Relays Single pole change over. -
Page 7: Physical Data
HYSICAL DATA 3.1 Mounting and Dimensions Fig.1 shows the overall dimensions of the Gasenz on line. Issue: 1.14 Rev. 1.0 Page 5... -
Page 8: Field Connections
Field Connections All connections to the module are provided in the form of screw terminals. Access is gained by opening the Microx Online enclosure to reveal the terminal connector strips on the rear of the control module backplate NOTE: Confirm the Voltage supply option of the instrument before connecting power.(230VAC or 24VDC) - Page 9 Issue: 1.14 Rev. 1.0 Page 7...
- Page 10 Internal layout Issue: 1.14 Rev. 1.0 Page 8...
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Page 11: Mounting Locations And Installation
3.1.4 Mounting Locations and Installation The Microx Online is a fixed gas detection system and should be installed so as to provide effective analysis of a process sample, either at end of line or from a process pipeline or vessel. The Alarm indication thus rendered by the Microx Online should be able to initiate the following actions as required: Indication of ‘Alarm’... - Page 12 Issue: 1.14 Rev. 1.0 Page 10...
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Page 13: Rs232 Connections
RS232 connections Microx PC Connections 9-way ‘D’ 25-way ‘D’ Function Function Analogue Output The analogue output provides a means of indicating to external equipment (e.g. data loggers, remote displays) the gas levels currently being detected by the system. The output is that of a Current Source (4-20mA), where 4mA represents zero gas and 20mA represents gas at the sensor FSD. -
Page 14: Software Features
Previous (Decrement) Password The Microx Online uses a password system to restrict the end user from carrying out certain changes that may compromise the use of the equipment. The menu system is split into two areas, user and engineer. The user has access to menu options E:1 to E:9, while the engineer has access to menu options E:1 to E:19. - Page 15 Menu options Menu Function option Calibrate Sensor Analogue output FSD Set 4 mA Set 20 mA Sensor simulation Customer Access Not permitted Customer Access Not permitted Diagnostics Restore E:10 Customer Access Not permitted E:11 Customer Access Not permitted E:12 % Vol Sensor Gain E:13 Sensor Damping E:14...
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Page 16: Menu 1 - Calibrate Sensor
Oxygen. This is typically provided from a portable cylinder with a suitable flow and pressure control adaptor. It may be necessary to disconnect the sample in pipe/tube connection to the Microx Online, and connect a suitable tube from the portable cylinder into the sample in bulkhead fitting. -
Page 17: Menu 2 - Analogue Output Fsd
Menu 2 – Analogue output FSD 4.1.2 • Press the MENU button to open the menu system. • Using the NEXT and PREVIOUS buttons select menu option: • Press ENTER. • Using the INCREASE and DECREASE buttons adjust the FSD to the required level. -
Page 18: Menu 4 - Set 20 Ma Output
Menu 4 – Set 20 mA output 4.1.4 • Monitor the current sourced from the analogue output of the OEM module using a multimeter set to read milliamps. • Press the MENU button to open the menu system. • Using the NEXT and PREVIOUS buttons select menu option: •... -
Page 19: Menu 6 - Sensor Selection
Menu 6 – Sensor selection 4.1.6 Warning The Gasenz is supplied configured for the Sensor type with which it is to be used. Customer adjustment of this setting is not permitted. 4.1.7 Adjusting this setting will render the Gasenz inoperable. 4.1.8 4.1.9 4.1.7... -
Page 20: Menu 9 - Restore
4.1.9 Menu 9 - Restore Customer adjustment of this setting is not permitted. 4.1.10 Menu 10 – Zero offset Customer adjustment of this setting is not permitted. Issue: 1.14 Rev. 1.0 Page 18... -
Page 21: Menu 11 - Ppm Sensor Gain
4.1.11 Menu 11 – PPM sensor Gain Customer adjustment of this setting is not permitted. 4.1.12 Menu 12 – % vol sensor gain This option is used to allow the user to adjust the sensor gain for optimal performance. Care should be taken when using this option, which is normally only used when a new sensor is fitted. -
Page 22: Menu 13 - Sensor Damping
4.1.13 Menu 13 – Sensor damping Oxygen sensors output change when subjected to pressure changes. The damping option is used to allow the user to reduce the effects of sudden changes by applying digital filtering. The larger the number the more the signal damping that is applied. -
Page 23: Menu 15 - Electronics Zero
4.1.15 Menu 15 – Electronics zero Disconnect the sensor and place a short at the sensor input to simulate 0% oxygen. • Press the MENU button to open the menu system. • Using the NEXT and PREVIOUS buttons select menu option: E:15 •... -
Page 24: Menu 16 - Noise Rejection
4.1.16 Menu 16 – Noise Rejection Warning Customer adjustment of this setting is not recommended. The module will be factory set prior to shipment at a value appropriate to the sensor type fitted. Otherwise changing this value may limit the performance and, in extreme cases, the instrument may no longer detect gas. -
Page 25: Menu 17 - Relay
4.1.17 Menu 17 – Relay The unit is fitted with three relays that are operated in conjunction with one of three alarm levels. Relay 1 is associated with alarm level 1. Relay 2 is associated with alarm level 2. Relay 3 is associated with alarm level 3. The user can select if the relay is normally Energized, E’... -
Page 26: Menu 18 - Alarm Levels
4.1.18 Menu 18 – Alarm levels Note: When the option of the Light Tower indicator is fitted, Relays 1 or Relays 1 and 2 will be used to operate the Red, Green Lamps and Audible alarm. Thus only Relay 3 is typically available for customer interface connection. -
Page 27: Routine Maintenance & Servicing
& S OUTINE AINTENANCE ERVICING The Microx Online will provide reliable and fault free service when given regular maintenance and calibrations. Routine Inspection and Maintenance It is advisable to periodically inspect the installation: Clean gas detector head using a clean DAMP cloth. -
Page 28: Password
Password. Issue: 1.14 Rev. 1.0 Page 26... - Page 29 Issue: 1.14 Rev. 1.0 Page 27...
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